1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/compiler/compileBroker.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,2347 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "precompiled.hpp"
1.29 +#include "classfile/systemDictionary.hpp"
1.30 +#include "classfile/vmSymbols.hpp"
1.31 +#include "code/codeCache.hpp"
1.32 +#include "compiler/compileBroker.hpp"
1.33 +#include "compiler/compileLog.hpp"
1.34 +#include "compiler/compilerOracle.hpp"
1.35 +#include "interpreter/linkResolver.hpp"
1.36 +#include "memory/allocation.inline.hpp"
1.37 +#include "oops/methodData.hpp"
1.38 +#include "oops/method.hpp"
1.39 +#include "oops/oop.inline.hpp"
1.40 +#include "prims/nativeLookup.hpp"
1.41 +#include "runtime/arguments.hpp"
1.42 +#include "runtime/compilationPolicy.hpp"
1.43 +#include "runtime/init.hpp"
1.44 +#include "runtime/interfaceSupport.hpp"
1.45 +#include "runtime/javaCalls.hpp"
1.46 +#include "runtime/os.hpp"
1.47 +#include "runtime/sharedRuntime.hpp"
1.48 +#include "runtime/sweeper.hpp"
1.49 +#include "trace/tracing.hpp"
1.50 +#include "utilities/dtrace.hpp"
1.51 +#include "utilities/events.hpp"
1.52 +#ifdef COMPILER1
1.53 +#include "c1/c1_Compiler.hpp"
1.54 +#endif
1.55 +#ifdef COMPILER2
1.56 +#include "opto/c2compiler.hpp"
1.57 +#endif
1.58 +#ifdef SHARK
1.59 +#include "shark/sharkCompiler.hpp"
1.60 +#endif
1.61 +
1.62 +#ifdef DTRACE_ENABLED
1.63 +
1.64 +// Only bother with this argument setup if dtrace is available
1.65 +
1.66 +#ifndef USDT2
1.67 +HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
1.68 + char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
1.69 +HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
1.70 + char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
1.71 +
1.72 +#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \
1.73 + { \
1.74 + Symbol* klass_name = (method)->klass_name(); \
1.75 + Symbol* name = (method)->name(); \
1.76 + Symbol* signature = (method)->signature(); \
1.77 + HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
1.78 + comp_name, strlen(comp_name), \
1.79 + klass_name->bytes(), klass_name->utf8_length(), \
1.80 + name->bytes(), name->utf8_length(), \
1.81 + signature->bytes(), signature->utf8_length()); \
1.82 + }
1.83 +
1.84 +#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \
1.85 + { \
1.86 + Symbol* klass_name = (method)->klass_name(); \
1.87 + Symbol* name = (method)->name(); \
1.88 + Symbol* signature = (method)->signature(); \
1.89 + HS_DTRACE_PROBE9(hotspot, method__compile__end, \
1.90 + comp_name, strlen(comp_name), \
1.91 + klass_name->bytes(), klass_name->utf8_length(), \
1.92 + name->bytes(), name->utf8_length(), \
1.93 + signature->bytes(), signature->utf8_length(), (success)); \
1.94 + }
1.95 +
1.96 +#else /* USDT2 */
1.97 +
1.98 +#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \
1.99 + { \
1.100 + Symbol* klass_name = (method)->klass_name(); \
1.101 + Symbol* name = (method)->name(); \
1.102 + Symbol* signature = (method)->signature(); \
1.103 + HOTSPOT_METHOD_COMPILE_BEGIN( \
1.104 + comp_name, strlen(comp_name), \
1.105 + (char *) klass_name->bytes(), klass_name->utf8_length(), \
1.106 + (char *) name->bytes(), name->utf8_length(), \
1.107 + (char *) signature->bytes(), signature->utf8_length()); \
1.108 + }
1.109 +
1.110 +#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \
1.111 + { \
1.112 + Symbol* klass_name = (method)->klass_name(); \
1.113 + Symbol* name = (method)->name(); \
1.114 + Symbol* signature = (method)->signature(); \
1.115 + HOTSPOT_METHOD_COMPILE_END( \
1.116 + comp_name, strlen(comp_name), \
1.117 + (char *) klass_name->bytes(), klass_name->utf8_length(), \
1.118 + (char *) name->bytes(), name->utf8_length(), \
1.119 + (char *) signature->bytes(), signature->utf8_length(), (success)); \
1.120 + }
1.121 +#endif /* USDT2 */
1.122 +
1.123 +#else // ndef DTRACE_ENABLED
1.124 +
1.125 +#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name)
1.126 +#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success)
1.127 +
1.128 +#endif // ndef DTRACE_ENABLED
1.129 +
1.130 +bool CompileBroker::_initialized = false;
1.131 +volatile bool CompileBroker::_should_block = false;
1.132 +volatile jint CompileBroker::_print_compilation_warning = 0;
1.133 +volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
1.134 +
1.135 +// The installed compiler(s)
1.136 +AbstractCompiler* CompileBroker::_compilers[2];
1.137 +
1.138 +// These counters are used to assign an unique ID to each compilation.
1.139 +volatile jint CompileBroker::_compilation_id = 0;
1.140 +volatile jint CompileBroker::_osr_compilation_id = 0;
1.141 +
1.142 +// Debugging information
1.143 +int CompileBroker::_last_compile_type = no_compile;
1.144 +int CompileBroker::_last_compile_level = CompLevel_none;
1.145 +char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
1.146 +
1.147 +// Performance counters
1.148 +PerfCounter* CompileBroker::_perf_total_compilation = NULL;
1.149 +PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
1.150 +PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
1.151 +
1.152 +PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
1.153 +PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
1.154 +PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
1.155 +PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
1.156 +PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
1.157 +
1.158 +PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
1.159 +PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
1.160 +PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
1.161 +PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
1.162 +
1.163 +PerfStringVariable* CompileBroker::_perf_last_method = NULL;
1.164 +PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
1.165 +PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
1.166 +PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
1.167 +PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
1.168 +PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
1.169 +PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
1.170 +
1.171 +// Timers and counters for generating statistics
1.172 +elapsedTimer CompileBroker::_t_total_compilation;
1.173 +elapsedTimer CompileBroker::_t_osr_compilation;
1.174 +elapsedTimer CompileBroker::_t_standard_compilation;
1.175 +
1.176 +int CompileBroker::_total_bailout_count = 0;
1.177 +int CompileBroker::_total_invalidated_count = 0;
1.178 +int CompileBroker::_total_compile_count = 0;
1.179 +int CompileBroker::_total_osr_compile_count = 0;
1.180 +int CompileBroker::_total_standard_compile_count = 0;
1.181 +
1.182 +int CompileBroker::_sum_osr_bytes_compiled = 0;
1.183 +int CompileBroker::_sum_standard_bytes_compiled = 0;
1.184 +int CompileBroker::_sum_nmethod_size = 0;
1.185 +int CompileBroker::_sum_nmethod_code_size = 0;
1.186 +
1.187 +long CompileBroker::_peak_compilation_time = 0;
1.188 +
1.189 +CompileQueue* CompileBroker::_c2_method_queue = NULL;
1.190 +CompileQueue* CompileBroker::_c1_method_queue = NULL;
1.191 +CompileTask* CompileBroker::_task_free_list = NULL;
1.192 +
1.193 +GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL;
1.194 +
1.195 +
1.196 +class CompilationLog : public StringEventLog {
1.197 + public:
1.198 + CompilationLog() : StringEventLog("Compilation events") {
1.199 + }
1.200 +
1.201 + void log_compile(JavaThread* thread, CompileTask* task) {
1.202 + StringLogMessage lm;
1.203 + stringStream sstr = lm.stream();
1.204 + // msg.time_stamp().update_to(tty->time_stamp().ticks());
1.205 + task->print_compilation(&sstr, NULL, true);
1.206 + log(thread, "%s", (const char*)lm);
1.207 + }
1.208 +
1.209 + void log_nmethod(JavaThread* thread, nmethod* nm) {
1.210 + log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]",
1.211 + nm->compile_id(), nm->is_osr_method() ? "%" : "",
1.212 + p2i(nm), p2i(nm->code_begin()), p2i(nm->code_end()));
1.213 + }
1.214 +
1.215 + void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) {
1.216 + StringLogMessage lm;
1.217 + lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason);
1.218 + if (retry_message != NULL) {
1.219 + lm.append(" (%s)", retry_message);
1.220 + }
1.221 + lm.print("\n");
1.222 + log(thread, "%s", (const char*)lm);
1.223 + }
1.224 +};
1.225 +
1.226 +static CompilationLog* _compilation_log = NULL;
1.227 +
1.228 +void compileBroker_init() {
1.229 + if (LogEvents) {
1.230 + _compilation_log = new CompilationLog();
1.231 + }
1.232 +}
1.233 +
1.234 +CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
1.235 + CompilerThread* thread = CompilerThread::current();
1.236 + thread->set_task(task);
1.237 + CompileLog* log = thread->log();
1.238 + if (log != NULL) task->log_task_start(log);
1.239 +}
1.240 +
1.241 +CompileTaskWrapper::~CompileTaskWrapper() {
1.242 + CompilerThread* thread = CompilerThread::current();
1.243 + CompileTask* task = thread->task();
1.244 + CompileLog* log = thread->log();
1.245 + if (log != NULL) task->log_task_done(log);
1.246 + thread->set_task(NULL);
1.247 + task->set_code_handle(NULL);
1.248 + thread->set_env(NULL);
1.249 + if (task->is_blocking()) {
1.250 + MutexLocker notifier(task->lock(), thread);
1.251 + task->mark_complete();
1.252 + // Notify the waiting thread that the compilation has completed.
1.253 + task->lock()->notify_all();
1.254 + } else {
1.255 + task->mark_complete();
1.256 +
1.257 + // By convention, the compiling thread is responsible for
1.258 + // recycling a non-blocking CompileTask.
1.259 + CompileBroker::free_task(task);
1.260 + }
1.261 +}
1.262 +
1.263 +
1.264 +// ------------------------------------------------------------------
1.265 +// CompileTask::initialize
1.266 +void CompileTask::initialize(int compile_id,
1.267 + methodHandle method,
1.268 + int osr_bci,
1.269 + int comp_level,
1.270 + methodHandle hot_method,
1.271 + int hot_count,
1.272 + const char* comment,
1.273 + bool is_blocking) {
1.274 + assert(!_lock->is_locked(), "bad locking");
1.275 +
1.276 + _compile_id = compile_id;
1.277 + _method = method();
1.278 + _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder());
1.279 + _osr_bci = osr_bci;
1.280 + _is_blocking = is_blocking;
1.281 + _comp_level = comp_level;
1.282 + _num_inlined_bytecodes = 0;
1.283 +
1.284 + _is_complete = false;
1.285 + _is_success = false;
1.286 + _code_handle = NULL;
1.287 +
1.288 + _hot_method = NULL;
1.289 + _hot_method_holder = NULL;
1.290 + _hot_count = hot_count;
1.291 + _time_queued = 0; // tidy
1.292 + _comment = comment;
1.293 +
1.294 + if (LogCompilation) {
1.295 + _time_queued = os::elapsed_counter();
1.296 + if (hot_method.not_null()) {
1.297 + if (hot_method == method) {
1.298 + _hot_method = _method;
1.299 + } else {
1.300 + _hot_method = hot_method();
1.301 + // only add loader or mirror if different from _method_holder
1.302 + _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder());
1.303 + }
1.304 + }
1.305 + }
1.306 +
1.307 + _next = NULL;
1.308 +}
1.309 +
1.310 +// ------------------------------------------------------------------
1.311 +// CompileTask::code/set_code
1.312 +nmethod* CompileTask::code() const {
1.313 + if (_code_handle == NULL) return NULL;
1.314 + return _code_handle->code();
1.315 +}
1.316 +void CompileTask::set_code(nmethod* nm) {
1.317 + if (_code_handle == NULL && nm == NULL) return;
1.318 + guarantee(_code_handle != NULL, "");
1.319 + _code_handle->set_code(nm);
1.320 + if (nm == NULL) _code_handle = NULL; // drop the handle also
1.321 +}
1.322 +
1.323 +// ------------------------------------------------------------------
1.324 +// CompileTask::free
1.325 +void CompileTask::free() {
1.326 + set_code(NULL);
1.327 + assert(!_lock->is_locked(), "Should not be locked when freed");
1.328 + JNIHandles::destroy_global(_method_holder);
1.329 + JNIHandles::destroy_global(_hot_method_holder);
1.330 +}
1.331 +
1.332 +
1.333 +void CompileTask::mark_on_stack() {
1.334 + // Mark these methods as something redefine classes cannot remove.
1.335 + _method->set_on_stack(true);
1.336 + if (_hot_method != NULL) {
1.337 + _hot_method->set_on_stack(true);
1.338 + }
1.339 +}
1.340 +
1.341 +// ------------------------------------------------------------------
1.342 +// CompileTask::print
1.343 +void CompileTask::print() {
1.344 + tty->print("<CompileTask compile_id=%d ", _compile_id);
1.345 + tty->print("method=");
1.346 + _method->print_name(tty);
1.347 + tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
1.348 + _osr_bci, bool_to_str(_is_blocking),
1.349 + bool_to_str(_is_complete), bool_to_str(_is_success));
1.350 +}
1.351 +
1.352 +
1.353 +// ------------------------------------------------------------------
1.354 +// CompileTask::print_line_on_error
1.355 +//
1.356 +// This function is called by fatal error handler when the thread
1.357 +// causing troubles is a compiler thread.
1.358 +//
1.359 +// Do not grab any lock, do not allocate memory.
1.360 +//
1.361 +// Otherwise it's the same as CompileTask::print_line()
1.362 +//
1.363 +void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
1.364 + // print compiler name
1.365 + st->print("%s:", CompileBroker::compiler_name(comp_level()));
1.366 + print_compilation(st);
1.367 +}
1.368 +
1.369 +// ------------------------------------------------------------------
1.370 +// CompileTask::print_line
1.371 +void CompileTask::print_line() {
1.372 + ttyLocker ttyl; // keep the following output all in one block
1.373 + // print compiler name if requested
1.374 + if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level()));
1.375 + print_compilation();
1.376 +}
1.377 +
1.378 +
1.379 +// ------------------------------------------------------------------
1.380 +// CompileTask::print_compilation_impl
1.381 +void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level,
1.382 + bool is_osr_method, int osr_bci, bool is_blocking,
1.383 + const char* msg, bool short_form) {
1.384 + if (!short_form) {
1.385 + st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
1.386 + }
1.387 + st->print("%4d ", compile_id); // print compilation number
1.388 +
1.389 + // For unloaded methods the transition to zombie occurs after the
1.390 + // method is cleared so it's impossible to report accurate
1.391 + // information for that case.
1.392 + bool is_synchronized = false;
1.393 + bool has_exception_handler = false;
1.394 + bool is_native = false;
1.395 + if (method != NULL) {
1.396 + is_synchronized = method->is_synchronized();
1.397 + has_exception_handler = method->has_exception_handler();
1.398 + is_native = method->is_native();
1.399 + }
1.400 + // method attributes
1.401 + const char compile_type = is_osr_method ? '%' : ' ';
1.402 + const char sync_char = is_synchronized ? 's' : ' ';
1.403 + const char exception_char = has_exception_handler ? '!' : ' ';
1.404 + const char blocking_char = is_blocking ? 'b' : ' ';
1.405 + const char native_char = is_native ? 'n' : ' ';
1.406 +
1.407 + // print method attributes
1.408 + st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
1.409 +
1.410 + if (TieredCompilation) {
1.411 + if (comp_level != -1) st->print("%d ", comp_level);
1.412 + else st->print("- ");
1.413 + }
1.414 + st->print(" "); // more indent
1.415 +
1.416 + if (method == NULL) {
1.417 + st->print("(method)");
1.418 + } else {
1.419 + method->print_short_name(st);
1.420 + if (is_osr_method) {
1.421 + st->print(" @ %d", osr_bci);
1.422 + }
1.423 + if (method->is_native())
1.424 + st->print(" (native)");
1.425 + else
1.426 + st->print(" (%d bytes)", method->code_size());
1.427 + }
1.428 +
1.429 + if (msg != NULL) {
1.430 + st->print(" %s", msg);
1.431 + }
1.432 + if (!short_form) {
1.433 + st->cr();
1.434 + }
1.435 +}
1.436 +
1.437 +// ------------------------------------------------------------------
1.438 +// CompileTask::print_inlining
1.439 +void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
1.440 + // 1234567
1.441 + st->print(" "); // print timestamp
1.442 + // 1234
1.443 + st->print(" "); // print compilation number
1.444 +
1.445 + // method attributes
1.446 + if (method->is_loaded()) {
1.447 + const char sync_char = method->is_synchronized() ? 's' : ' ';
1.448 + const char exception_char = method->has_exception_handlers() ? '!' : ' ';
1.449 + const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
1.450 +
1.451 + // print method attributes
1.452 + st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
1.453 + } else {
1.454 + // %s!bn
1.455 + st->print(" "); // print method attributes
1.456 + }
1.457 +
1.458 + if (TieredCompilation) {
1.459 + st->print(" ");
1.460 + }
1.461 + st->print(" "); // more indent
1.462 + st->print(" "); // initial inlining indent
1.463 +
1.464 + for (int i = 0; i < inline_level; i++) st->print(" ");
1.465 +
1.466 + st->print("@ %d ", bci); // print bci
1.467 + method->print_short_name(st);
1.468 + if (method->is_loaded())
1.469 + st->print(" (%d bytes)", method->code_size());
1.470 + else
1.471 + st->print(" (not loaded)");
1.472 +
1.473 + if (msg != NULL) {
1.474 + st->print(" %s", msg);
1.475 + }
1.476 + st->cr();
1.477 +}
1.478 +
1.479 +// ------------------------------------------------------------------
1.480 +// CompileTask::print_inline_indent
1.481 +void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
1.482 + // 1234567
1.483 + st->print(" "); // print timestamp
1.484 + // 1234
1.485 + st->print(" "); // print compilation number
1.486 + // %s!bn
1.487 + st->print(" "); // print method attributes
1.488 + if (TieredCompilation) {
1.489 + st->print(" ");
1.490 + }
1.491 + st->print(" "); // more indent
1.492 + st->print(" "); // initial inlining indent
1.493 + for (int i = 0; i < inline_level; i++) st->print(" ");
1.494 +}
1.495 +
1.496 +// ------------------------------------------------------------------
1.497 +// CompileTask::print_compilation
1.498 +void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) {
1.499 + bool is_osr_method = osr_bci() != InvocationEntryBci;
1.500 + print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form);
1.501 +}
1.502 +
1.503 +// ------------------------------------------------------------------
1.504 +// CompileTask::log_task
1.505 +void CompileTask::log_task(xmlStream* log) {
1.506 + Thread* thread = Thread::current();
1.507 + methodHandle method(thread, this->method());
1.508 + ResourceMark rm(thread);
1.509 +
1.510 + // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
1.511 + log->print(" compile_id='%d'", _compile_id);
1.512 + if (_osr_bci != CompileBroker::standard_entry_bci) {
1.513 + log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
1.514 + } // else compile_kind='c2c'
1.515 + if (!method.is_null()) log->method(method);
1.516 + if (_osr_bci != CompileBroker::standard_entry_bci) {
1.517 + log->print(" osr_bci='%d'", _osr_bci);
1.518 + }
1.519 + if (_comp_level != CompLevel_highest_tier) {
1.520 + log->print(" level='%d'", _comp_level);
1.521 + }
1.522 + if (_is_blocking) {
1.523 + log->print(" blocking='1'");
1.524 + }
1.525 + log->stamp();
1.526 +}
1.527 +
1.528 +
1.529 +// ------------------------------------------------------------------
1.530 +// CompileTask::log_task_queued
1.531 +void CompileTask::log_task_queued() {
1.532 + Thread* thread = Thread::current();
1.533 + ttyLocker ttyl;
1.534 + ResourceMark rm(thread);
1.535 +
1.536 + xtty->begin_elem("task_queued");
1.537 + log_task(xtty);
1.538 + if (_comment != NULL) {
1.539 + xtty->print(" comment='%s'", _comment);
1.540 + }
1.541 + if (_hot_method != NULL) {
1.542 + methodHandle hot(thread, _hot_method);
1.543 + methodHandle method(thread, _method);
1.544 + if (hot() != method()) {
1.545 + xtty->method(hot);
1.546 + }
1.547 + }
1.548 + if (_hot_count != 0) {
1.549 + xtty->print(" hot_count='%d'", _hot_count);
1.550 + }
1.551 + xtty->end_elem();
1.552 +}
1.553 +
1.554 +
1.555 +// ------------------------------------------------------------------
1.556 +// CompileTask::log_task_start
1.557 +void CompileTask::log_task_start(CompileLog* log) {
1.558 + log->begin_head("task");
1.559 + log_task(log);
1.560 + log->end_head();
1.561 +}
1.562 +
1.563 +
1.564 +// ------------------------------------------------------------------
1.565 +// CompileTask::log_task_done
1.566 +void CompileTask::log_task_done(CompileLog* log) {
1.567 + Thread* thread = Thread::current();
1.568 + methodHandle method(thread, this->method());
1.569 + ResourceMark rm(thread);
1.570 +
1.571 + // <task_done ... stamp='1.234'> </task>
1.572 + nmethod* nm = code();
1.573 + log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
1.574 + _is_success, nm == NULL ? 0 : nm->content_size(),
1.575 + method->invocation_count());
1.576 + int bec = method->backedge_count();
1.577 + if (bec != 0) log->print(" backedge_count='%d'", bec);
1.578 + // Note: "_is_complete" is about to be set, but is not.
1.579 + if (_num_inlined_bytecodes != 0) {
1.580 + log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
1.581 + }
1.582 + log->stamp();
1.583 + log->end_elem();
1.584 + log->tail("task");
1.585 + log->clear_identities(); // next task will have different CI
1.586 + if (log->unflushed_count() > 2000) {
1.587 + log->flush();
1.588 + }
1.589 + log->mark_file_end();
1.590 +}
1.591 +
1.592 +
1.593 +
1.594 +// Add a CompileTask to a CompileQueue
1.595 +void CompileQueue::add(CompileTask* task) {
1.596 + assert(lock()->owned_by_self(), "must own lock");
1.597 +
1.598 + task->set_next(NULL);
1.599 + task->set_prev(NULL);
1.600 +
1.601 + if (_last == NULL) {
1.602 + // The compile queue is empty.
1.603 + assert(_first == NULL, "queue is empty");
1.604 + _first = task;
1.605 + _last = task;
1.606 + } else {
1.607 + // Append the task to the queue.
1.608 + assert(_last->next() == NULL, "not last");
1.609 + _last->set_next(task);
1.610 + task->set_prev(_last);
1.611 + _last = task;
1.612 + }
1.613 + ++_size;
1.614 +
1.615 + // Mark the method as being in the compile queue.
1.616 + task->method()->set_queued_for_compilation();
1.617 +
1.618 + if (CIPrintCompileQueue) {
1.619 + print();
1.620 + }
1.621 +
1.622 + if (LogCompilation && xtty != NULL) {
1.623 + task->log_task_queued();
1.624 + }
1.625 +
1.626 + // Notify CompilerThreads that a task is available.
1.627 + lock()->notify_all();
1.628 +}
1.629 +
1.630 +void CompileQueue::delete_all() {
1.631 + assert(lock()->owned_by_self(), "must own lock");
1.632 + if (_first != NULL) {
1.633 + for (CompileTask* task = _first; task != NULL; task = task->next()) {
1.634 + delete task;
1.635 + }
1.636 + _first = NULL;
1.637 + }
1.638 +}
1.639 +
1.640 +// ------------------------------------------------------------------
1.641 +// CompileQueue::get
1.642 +//
1.643 +// Get the next CompileTask from a CompileQueue
1.644 +CompileTask* CompileQueue::get() {
1.645 + NMethodSweeper::possibly_sweep();
1.646 +
1.647 + MutexLocker locker(lock());
1.648 + // If _first is NULL we have no more compile jobs. There are two reasons for
1.649 + // having no compile jobs: First, we compiled everything we wanted. Second,
1.650 + // we ran out of code cache so compilation has been disabled. In the latter
1.651 + // case we perform code cache sweeps to free memory such that we can re-enable
1.652 + // compilation.
1.653 + while (_first == NULL) {
1.654 + // Exit loop if compilation is disabled forever
1.655 + if (CompileBroker::is_compilation_disabled_forever()) {
1.656 + return NULL;
1.657 + }
1.658 +
1.659 + if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) {
1.660 + // Wait a certain amount of time to possibly do another sweep.
1.661 + // We must wait until stack scanning has happened so that we can
1.662 + // transition a method's state from 'not_entrant' to 'zombie'.
1.663 + long wait_time = NmethodSweepCheckInterval * 1000;
1.664 + if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) {
1.665 + // Only one thread at a time can do sweeping. Scale the
1.666 + // wait time according to the number of compiler threads.
1.667 + // As a result, the next sweep is likely to happen every 100ms
1.668 + // with an arbitrary number of threads that do sweeping.
1.669 + wait_time = 100 * CICompilerCount;
1.670 + }
1.671 + bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time);
1.672 + if (timeout) {
1.673 + MutexUnlocker ul(lock());
1.674 + NMethodSweeper::possibly_sweep();
1.675 + }
1.676 + } else {
1.677 + // If there are no compilation tasks and we can compile new jobs
1.678 + // (i.e., there is enough free space in the code cache) there is
1.679 + // no need to invoke the sweeper. As a result, the hotness of methods
1.680 + // remains unchanged. This behavior is desired, since we want to keep
1.681 + // the stable state, i.e., we do not want to evict methods from the
1.682 + // code cache if it is unnecessary.
1.683 + // We need a timed wait here, since compiler threads can exit if compilation
1.684 + // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads
1.685 + // is not critical and we do not want idle compiler threads to wake up too often.
1.686 + lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000);
1.687 + }
1.688 + }
1.689 +
1.690 + if (CompileBroker::is_compilation_disabled_forever()) {
1.691 + return NULL;
1.692 + }
1.693 +
1.694 + CompileTask* task = CompilationPolicy::policy()->select_task(this);
1.695 + remove(task);
1.696 + return task;
1.697 +}
1.698 +
1.699 +void CompileQueue::remove(CompileTask* task)
1.700 +{
1.701 + assert(lock()->owned_by_self(), "must own lock");
1.702 + if (task->prev() != NULL) {
1.703 + task->prev()->set_next(task->next());
1.704 + } else {
1.705 + // max is the first element
1.706 + assert(task == _first, "Sanity");
1.707 + _first = task->next();
1.708 + }
1.709 +
1.710 + if (task->next() != NULL) {
1.711 + task->next()->set_prev(task->prev());
1.712 + } else {
1.713 + // max is the last element
1.714 + assert(task == _last, "Sanity");
1.715 + _last = task->prev();
1.716 + }
1.717 + --_size;
1.718 +}
1.719 +
1.720 +// methods in the compile queue need to be marked as used on the stack
1.721 +// so that they don't get reclaimed by Redefine Classes
1.722 +void CompileQueue::mark_on_stack() {
1.723 + CompileTask* task = _first;
1.724 + while (task != NULL) {
1.725 + task->mark_on_stack();
1.726 + task = task->next();
1.727 + }
1.728 +}
1.729 +
1.730 +// ------------------------------------------------------------------
1.731 +// CompileQueue::print
1.732 +void CompileQueue::print() {
1.733 + tty->print_cr("Contents of %s", name());
1.734 + tty->print_cr("----------------------");
1.735 + CompileTask* task = _first;
1.736 + while (task != NULL) {
1.737 + task->print_line();
1.738 + task = task->next();
1.739 + }
1.740 + tty->print_cr("----------------------");
1.741 +}
1.742 +
1.743 +CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
1.744 +
1.745 + _current_method[0] = '\0';
1.746 + _compile_type = CompileBroker::no_compile;
1.747 +
1.748 + if (UsePerfData) {
1.749 + ResourceMark rm;
1.750 +
1.751 + // create the thread instance name space string - don't create an
1.752 + // instance subspace if instance is -1 - keeps the adapterThread
1.753 + // counters from having a ".0" namespace.
1.754 + const char* thread_i = (instance == -1) ? thread_name :
1.755 + PerfDataManager::name_space(thread_name, instance);
1.756 +
1.757 +
1.758 + char* name = PerfDataManager::counter_name(thread_i, "method");
1.759 + _perf_current_method =
1.760 + PerfDataManager::create_string_variable(SUN_CI, name,
1.761 + cmname_buffer_length,
1.762 + _current_method, CHECK);
1.763 +
1.764 + name = PerfDataManager::counter_name(thread_i, "type");
1.765 + _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
1.766 + PerfData::U_None,
1.767 + (jlong)_compile_type,
1.768 + CHECK);
1.769 +
1.770 + name = PerfDataManager::counter_name(thread_i, "time");
1.771 + _perf_time = PerfDataManager::create_counter(SUN_CI, name,
1.772 + PerfData::U_Ticks, CHECK);
1.773 +
1.774 + name = PerfDataManager::counter_name(thread_i, "compiles");
1.775 + _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
1.776 + PerfData::U_Events, CHECK);
1.777 + }
1.778 +}
1.779 +
1.780 +// ------------------------------------------------------------------
1.781 +// CompileBroker::compilation_init
1.782 +//
1.783 +// Initialize the Compilation object
1.784 +void CompileBroker::compilation_init() {
1.785 + _last_method_compiled[0] = '\0';
1.786 +
1.787 + // No need to initialize compilation system if we do not use it.
1.788 + if (!UseCompiler) {
1.789 + return;
1.790 + }
1.791 +#ifndef SHARK
1.792 + // Set the interface to the current compiler(s).
1.793 + int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
1.794 + int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
1.795 +#ifdef COMPILER1
1.796 + if (c1_count > 0) {
1.797 + _compilers[0] = new Compiler();
1.798 + }
1.799 +#endif // COMPILER1
1.800 +
1.801 +#ifdef COMPILER2
1.802 + if (c2_count > 0) {
1.803 + _compilers[1] = new C2Compiler();
1.804 + }
1.805 +#endif // COMPILER2
1.806 +
1.807 +#else // SHARK
1.808 + int c1_count = 0;
1.809 + int c2_count = 1;
1.810 +
1.811 + _compilers[1] = new SharkCompiler();
1.812 +#endif // SHARK
1.813 +
1.814 + // Initialize the CompileTask free list
1.815 + _task_free_list = NULL;
1.816 +
1.817 + // Start the CompilerThreads
1.818 + init_compiler_threads(c1_count, c2_count);
1.819 + // totalTime performance counter is always created as it is required
1.820 + // by the implementation of java.lang.management.CompilationMBean.
1.821 + {
1.822 + EXCEPTION_MARK;
1.823 + _perf_total_compilation =
1.824 + PerfDataManager::create_counter(JAVA_CI, "totalTime",
1.825 + PerfData::U_Ticks, CHECK);
1.826 + }
1.827 +
1.828 +
1.829 + if (UsePerfData) {
1.830 +
1.831 + EXCEPTION_MARK;
1.832 +
1.833 + // create the jvmstat performance counters
1.834 + _perf_osr_compilation =
1.835 + PerfDataManager::create_counter(SUN_CI, "osrTime",
1.836 + PerfData::U_Ticks, CHECK);
1.837 +
1.838 + _perf_standard_compilation =
1.839 + PerfDataManager::create_counter(SUN_CI, "standardTime",
1.840 + PerfData::U_Ticks, CHECK);
1.841 +
1.842 + _perf_total_bailout_count =
1.843 + PerfDataManager::create_counter(SUN_CI, "totalBailouts",
1.844 + PerfData::U_Events, CHECK);
1.845 +
1.846 + _perf_total_invalidated_count =
1.847 + PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
1.848 + PerfData::U_Events, CHECK);
1.849 +
1.850 + _perf_total_compile_count =
1.851 + PerfDataManager::create_counter(SUN_CI, "totalCompiles",
1.852 + PerfData::U_Events, CHECK);
1.853 + _perf_total_osr_compile_count =
1.854 + PerfDataManager::create_counter(SUN_CI, "osrCompiles",
1.855 + PerfData::U_Events, CHECK);
1.856 +
1.857 + _perf_total_standard_compile_count =
1.858 + PerfDataManager::create_counter(SUN_CI, "standardCompiles",
1.859 + PerfData::U_Events, CHECK);
1.860 +
1.861 + _perf_sum_osr_bytes_compiled =
1.862 + PerfDataManager::create_counter(SUN_CI, "osrBytes",
1.863 + PerfData::U_Bytes, CHECK);
1.864 +
1.865 + _perf_sum_standard_bytes_compiled =
1.866 + PerfDataManager::create_counter(SUN_CI, "standardBytes",
1.867 + PerfData::U_Bytes, CHECK);
1.868 +
1.869 + _perf_sum_nmethod_size =
1.870 + PerfDataManager::create_counter(SUN_CI, "nmethodSize",
1.871 + PerfData::U_Bytes, CHECK);
1.872 +
1.873 + _perf_sum_nmethod_code_size =
1.874 + PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
1.875 + PerfData::U_Bytes, CHECK);
1.876 +
1.877 + _perf_last_method =
1.878 + PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
1.879 + CompilerCounters::cmname_buffer_length,
1.880 + "", CHECK);
1.881 +
1.882 + _perf_last_failed_method =
1.883 + PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
1.884 + CompilerCounters::cmname_buffer_length,
1.885 + "", CHECK);
1.886 +
1.887 + _perf_last_invalidated_method =
1.888 + PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
1.889 + CompilerCounters::cmname_buffer_length,
1.890 + "", CHECK);
1.891 +
1.892 + _perf_last_compile_type =
1.893 + PerfDataManager::create_variable(SUN_CI, "lastType",
1.894 + PerfData::U_None,
1.895 + (jlong)CompileBroker::no_compile,
1.896 + CHECK);
1.897 +
1.898 + _perf_last_compile_size =
1.899 + PerfDataManager::create_variable(SUN_CI, "lastSize",
1.900 + PerfData::U_Bytes,
1.901 + (jlong)CompileBroker::no_compile,
1.902 + CHECK);
1.903 +
1.904 +
1.905 + _perf_last_failed_type =
1.906 + PerfDataManager::create_variable(SUN_CI, "lastFailedType",
1.907 + PerfData::U_None,
1.908 + (jlong)CompileBroker::no_compile,
1.909 + CHECK);
1.910 +
1.911 + _perf_last_invalidated_type =
1.912 + PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
1.913 + PerfData::U_None,
1.914 + (jlong)CompileBroker::no_compile,
1.915 + CHECK);
1.916 + }
1.917 +
1.918 + _initialized = true;
1.919 +}
1.920 +
1.921 +
1.922 +CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters,
1.923 + AbstractCompiler* comp, TRAPS) {
1.924 + CompilerThread* compiler_thread = NULL;
1.925 +
1.926 + Klass* k =
1.927 + SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(),
1.928 + true, CHECK_0);
1.929 + instanceKlassHandle klass (THREAD, k);
1.930 + instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
1.931 + Handle string = java_lang_String::create_from_str(name, CHECK_0);
1.932 +
1.933 + // Initialize thread_oop to put it into the system threadGroup
1.934 + Handle thread_group (THREAD, Universe::system_thread_group());
1.935 + JavaValue result(T_VOID);
1.936 + JavaCalls::call_special(&result, thread_oop,
1.937 + klass,
1.938 + vmSymbols::object_initializer_name(),
1.939 + vmSymbols::threadgroup_string_void_signature(),
1.940 + thread_group,
1.941 + string,
1.942 + CHECK_0);
1.943 +
1.944 + {
1.945 + MutexLocker mu(Threads_lock, THREAD);
1.946 + compiler_thread = new CompilerThread(queue, counters);
1.947 + // At this point the new CompilerThread data-races with this startup
1.948 + // thread (which I believe is the primoridal thread and NOT the VM
1.949 + // thread). This means Java bytecodes being executed at startup can
1.950 + // queue compile jobs which will run at whatever default priority the
1.951 + // newly created CompilerThread runs at.
1.952 +
1.953 +
1.954 + // At this point it may be possible that no osthread was created for the
1.955 + // JavaThread due to lack of memory. We would have to throw an exception
1.956 + // in that case. However, since this must work and we do not allow
1.957 + // exceptions anyway, check and abort if this fails.
1.958 +
1.959 + if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
1.960 + vm_exit_during_initialization("java.lang.OutOfMemoryError",
1.961 + "unable to create new native thread");
1.962 + }
1.963 +
1.964 + java_lang_Thread::set_thread(thread_oop(), compiler_thread);
1.965 +
1.966 + // Note that this only sets the JavaThread _priority field, which by
1.967 + // definition is limited to Java priorities and not OS priorities.
1.968 + // The os-priority is set in the CompilerThread startup code itself
1.969 +
1.970 + java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
1.971 +
1.972 + // Note that we cannot call os::set_priority because it expects Java
1.973 + // priorities and we are *explicitly* using OS priorities so that it's
1.974 + // possible to set the compiler thread priority higher than any Java
1.975 + // thread.
1.976 +
1.977 + int native_prio = CompilerThreadPriority;
1.978 + if (native_prio == -1) {
1.979 + if (UseCriticalCompilerThreadPriority) {
1.980 + native_prio = os::java_to_os_priority[CriticalPriority];
1.981 + } else {
1.982 + native_prio = os::java_to_os_priority[NearMaxPriority];
1.983 + }
1.984 + }
1.985 + os::set_native_priority(compiler_thread, native_prio);
1.986 +
1.987 + java_lang_Thread::set_daemon(thread_oop());
1.988 +
1.989 + compiler_thread->set_threadObj(thread_oop());
1.990 + compiler_thread->set_compiler(comp);
1.991 + Threads::add(compiler_thread);
1.992 + Thread::start(compiler_thread);
1.993 + }
1.994 +
1.995 + // Let go of Threads_lock before yielding
1.996 + os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
1.997 +
1.998 + return compiler_thread;
1.999 +}
1.1000 +
1.1001 +
1.1002 +void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) {
1.1003 + EXCEPTION_MARK;
1.1004 +#if !defined(ZERO) && !defined(SHARK)
1.1005 + assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?");
1.1006 +#endif // !ZERO && !SHARK
1.1007 + // Initialize the compilation queue
1.1008 + if (c2_compiler_count > 0) {
1.1009 + _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock);
1.1010 + _compilers[1]->set_num_compiler_threads(c2_compiler_count);
1.1011 + }
1.1012 + if (c1_compiler_count > 0) {
1.1013 + _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock);
1.1014 + _compilers[0]->set_num_compiler_threads(c1_compiler_count);
1.1015 + }
1.1016 +
1.1017 + int compiler_count = c1_compiler_count + c2_compiler_count;
1.1018 +
1.1019 + _compiler_threads =
1.1020 + new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true);
1.1021 +
1.1022 + char name_buffer[256];
1.1023 + for (int i = 0; i < c2_compiler_count; i++) {
1.1024 + // Create a name for our thread.
1.1025 + sprintf(name_buffer, "C2 CompilerThread%d", i);
1.1026 + CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
1.1027 + // Shark and C2
1.1028 + CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK);
1.1029 + _compiler_threads->append(new_thread);
1.1030 + }
1.1031 +
1.1032 + for (int i = c2_compiler_count; i < compiler_count; i++) {
1.1033 + // Create a name for our thread.
1.1034 + sprintf(name_buffer, "C1 CompilerThread%d", i);
1.1035 + CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
1.1036 + // C1
1.1037 + CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK);
1.1038 + _compiler_threads->append(new_thread);
1.1039 + }
1.1040 +
1.1041 + if (UsePerfData) {
1.1042 + PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK);
1.1043 + }
1.1044 +}
1.1045 +
1.1046 +
1.1047 +// Set the methods on the stack as on_stack so that redefine classes doesn't
1.1048 +// reclaim them
1.1049 +void CompileBroker::mark_on_stack() {
1.1050 + if (_c2_method_queue != NULL) {
1.1051 + _c2_method_queue->mark_on_stack();
1.1052 + }
1.1053 + if (_c1_method_queue != NULL) {
1.1054 + _c1_method_queue->mark_on_stack();
1.1055 + }
1.1056 +}
1.1057 +
1.1058 +// ------------------------------------------------------------------
1.1059 +// CompileBroker::compile_method
1.1060 +//
1.1061 +// Request compilation of a method.
1.1062 +void CompileBroker::compile_method_base(methodHandle method,
1.1063 + int osr_bci,
1.1064 + int comp_level,
1.1065 + methodHandle hot_method,
1.1066 + int hot_count,
1.1067 + const char* comment,
1.1068 + Thread* thread) {
1.1069 + // do nothing if compiler thread(s) is not available
1.1070 + if (!_initialized ) {
1.1071 + return;
1.1072 + }
1.1073 +
1.1074 + guarantee(!method->is_abstract(), "cannot compile abstract methods");
1.1075 + assert(method->method_holder()->oop_is_instance(),
1.1076 + "sanity check");
1.1077 + assert(!method->method_holder()->is_not_initialized(),
1.1078 + "method holder must be initialized");
1.1079 + assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys");
1.1080 +
1.1081 + if (CIPrintRequests) {
1.1082 + tty->print("request: ");
1.1083 + method->print_short_name(tty);
1.1084 + if (osr_bci != InvocationEntryBci) {
1.1085 + tty->print(" osr_bci: %d", osr_bci);
1.1086 + }
1.1087 + tty->print(" comment: %s count: %d", comment, hot_count);
1.1088 + if (!hot_method.is_null()) {
1.1089 + tty->print(" hot: ");
1.1090 + if (hot_method() != method()) {
1.1091 + hot_method->print_short_name(tty);
1.1092 + } else {
1.1093 + tty->print("yes");
1.1094 + }
1.1095 + }
1.1096 + tty->cr();
1.1097 + }
1.1098 +
1.1099 + // A request has been made for compilation. Before we do any
1.1100 + // real work, check to see if the method has been compiled
1.1101 + // in the meantime with a definitive result.
1.1102 + if (compilation_is_complete(method, osr_bci, comp_level)) {
1.1103 + return;
1.1104 + }
1.1105 +
1.1106 +#ifndef PRODUCT
1.1107 + if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
1.1108 + if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
1.1109 + // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
1.1110 + return;
1.1111 + }
1.1112 + }
1.1113 +#endif
1.1114 +
1.1115 + // If this method is already in the compile queue, then
1.1116 + // we do not block the current thread.
1.1117 + if (compilation_is_in_queue(method, osr_bci)) {
1.1118 + // We may want to decay our counter a bit here to prevent
1.1119 + // multiple denied requests for compilation. This is an
1.1120 + // open compilation policy issue. Note: The other possibility,
1.1121 + // in the case that this is a blocking compile request, is to have
1.1122 + // all subsequent blocking requesters wait for completion of
1.1123 + // ongoing compiles. Note that in this case we'll need a protocol
1.1124 + // for freeing the associated compile tasks. [Or we could have
1.1125 + // a single static monitor on which all these waiters sleep.]
1.1126 + return;
1.1127 + }
1.1128 +
1.1129 + // If the requesting thread is holding the pending list lock
1.1130 + // then we just return. We can't risk blocking while holding
1.1131 + // the pending list lock or a 3-way deadlock may occur
1.1132 + // between the reference handler thread, a GC (instigated
1.1133 + // by a compiler thread), and compiled method registration.
1.1134 + if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) {
1.1135 + return;
1.1136 + }
1.1137 +
1.1138 + // Outputs from the following MutexLocker block:
1.1139 + CompileTask* task = NULL;
1.1140 + bool blocking = false;
1.1141 + CompileQueue* queue = compile_queue(comp_level);
1.1142 +
1.1143 + // Acquire our lock.
1.1144 + {
1.1145 + MutexLocker locker(queue->lock(), thread);
1.1146 +
1.1147 + // Make sure the method has not slipped into the queues since
1.1148 + // last we checked; note that those checks were "fast bail-outs".
1.1149 + // Here we need to be more careful, see 14012000 below.
1.1150 + if (compilation_is_in_queue(method, osr_bci)) {
1.1151 + return;
1.1152 + }
1.1153 +
1.1154 + // We need to check again to see if the compilation has
1.1155 + // completed. A previous compilation may have registered
1.1156 + // some result.
1.1157 + if (compilation_is_complete(method, osr_bci, comp_level)) {
1.1158 + return;
1.1159 + }
1.1160 +
1.1161 + // We now know that this compilation is not pending, complete,
1.1162 + // or prohibited. Assign a compile_id to this compilation
1.1163 + // and check to see if it is in our [Start..Stop) range.
1.1164 + int compile_id = assign_compile_id(method, osr_bci);
1.1165 + if (compile_id == 0) {
1.1166 + // The compilation falls outside the allowed range.
1.1167 + return;
1.1168 + }
1.1169 +
1.1170 + // Should this thread wait for completion of the compile?
1.1171 + blocking = is_compile_blocking(method, osr_bci);
1.1172 +
1.1173 + // We will enter the compilation in the queue.
1.1174 + // 14012000: Note that this sets the queued_for_compile bits in
1.1175 + // the target method. We can now reason that a method cannot be
1.1176 + // queued for compilation more than once, as follows:
1.1177 + // Before a thread queues a task for compilation, it first acquires
1.1178 + // the compile queue lock, then checks if the method's queued bits
1.1179 + // are set or it has already been compiled. Thus there can not be two
1.1180 + // instances of a compilation task for the same method on the
1.1181 + // compilation queue. Consider now the case where the compilation
1.1182 + // thread has already removed a task for that method from the queue
1.1183 + // and is in the midst of compiling it. In this case, the
1.1184 + // queued_for_compile bits must be set in the method (and these
1.1185 + // will be visible to the current thread, since the bits were set
1.1186 + // under protection of the compile queue lock, which we hold now.
1.1187 + // When the compilation completes, the compiler thread first sets
1.1188 + // the compilation result and then clears the queued_for_compile
1.1189 + // bits. Neither of these actions are protected by a barrier (or done
1.1190 + // under the protection of a lock), so the only guarantee we have
1.1191 + // (on machines with TSO (Total Store Order)) is that these values
1.1192 + // will update in that order. As a result, the only combinations of
1.1193 + // these bits that the current thread will see are, in temporal order:
1.1194 + // <RESULT, QUEUE> :
1.1195 + // <0, 1> : in compile queue, but not yet compiled
1.1196 + // <1, 1> : compiled but queue bit not cleared
1.1197 + // <1, 0> : compiled and queue bit cleared
1.1198 + // Because we first check the queue bits then check the result bits,
1.1199 + // we are assured that we cannot introduce a duplicate task.
1.1200 + // Note that if we did the tests in the reverse order (i.e. check
1.1201 + // result then check queued bit), we could get the result bit before
1.1202 + // the compilation completed, and the queue bit after the compilation
1.1203 + // completed, and end up introducing a "duplicate" (redundant) task.
1.1204 + // In that case, the compiler thread should first check if a method
1.1205 + // has already been compiled before trying to compile it.
1.1206 + // NOTE: in the event that there are multiple compiler threads and
1.1207 + // there is de-optimization/recompilation, things will get hairy,
1.1208 + // and in that case it's best to protect both the testing (here) of
1.1209 + // these bits, and their updating (here and elsewhere) under a
1.1210 + // common lock.
1.1211 + task = create_compile_task(queue,
1.1212 + compile_id, method,
1.1213 + osr_bci, comp_level,
1.1214 + hot_method, hot_count, comment,
1.1215 + blocking);
1.1216 + }
1.1217 +
1.1218 + if (blocking) {
1.1219 + wait_for_completion(task);
1.1220 + }
1.1221 +}
1.1222 +
1.1223 +
1.1224 +nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
1.1225 + int comp_level,
1.1226 + methodHandle hot_method, int hot_count,
1.1227 + const char* comment, Thread* THREAD) {
1.1228 + // make sure arguments make sense
1.1229 + assert(method->method_holder()->oop_is_instance(), "not an instance method");
1.1230 + assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
1.1231 + assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
1.1232 + assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized");
1.1233 + // allow any levels for WhiteBox
1.1234 + assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered");
1.1235 + // return quickly if possible
1.1236 +
1.1237 + // lock, make sure that the compilation
1.1238 + // isn't prohibited in a straightforward way.
1.1239 + AbstractCompiler *comp = CompileBroker::compiler(comp_level);
1.1240 + if (comp == NULL || !comp->can_compile_method(method) ||
1.1241 + compilation_is_prohibited(method, osr_bci, comp_level)) {
1.1242 + return NULL;
1.1243 + }
1.1244 +
1.1245 + if (osr_bci == InvocationEntryBci) {
1.1246 + // standard compilation
1.1247 + nmethod* method_code = method->code();
1.1248 + if (method_code != NULL) {
1.1249 + if (compilation_is_complete(method, osr_bci, comp_level)) {
1.1250 + return method_code;
1.1251 + }
1.1252 + }
1.1253 + if (method->is_not_compilable(comp_level)) {
1.1254 + return NULL;
1.1255 + }
1.1256 + } else {
1.1257 + // osr compilation
1.1258 +#ifndef TIERED
1.1259 + // seems like an assert of dubious value
1.1260 + assert(comp_level == CompLevel_highest_tier,
1.1261 + "all OSR compiles are assumed to be at a single compilation lavel");
1.1262 +#endif // TIERED
1.1263 + // We accept a higher level osr method
1.1264 + nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1.1265 + if (nm != NULL) return nm;
1.1266 + if (method->is_not_osr_compilable(comp_level)) return NULL;
1.1267 + }
1.1268 +
1.1269 + assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
1.1270 + // some prerequisites that are compiler specific
1.1271 + if (comp->is_c2() || comp->is_shark()) {
1.1272 + method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL);
1.1273 + // Resolve all classes seen in the signature of the method
1.1274 + // we are compiling.
1.1275 + Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL);
1.1276 + }
1.1277 +
1.1278 + // If the method is native, do the lookup in the thread requesting
1.1279 + // the compilation. Native lookups can load code, which is not
1.1280 + // permitted during compilation.
1.1281 + //
1.1282 + // Note: A native method implies non-osr compilation which is
1.1283 + // checked with an assertion at the entry of this method.
1.1284 + if (method->is_native() && !method->is_method_handle_intrinsic()) {
1.1285 + bool in_base_library;
1.1286 + address adr = NativeLookup::lookup(method, in_base_library, THREAD);
1.1287 + if (HAS_PENDING_EXCEPTION) {
1.1288 + // In case of an exception looking up the method, we just forget
1.1289 + // about it. The interpreter will kick-in and throw the exception.
1.1290 + method->set_not_compilable(); // implies is_not_osr_compilable()
1.1291 + CLEAR_PENDING_EXCEPTION;
1.1292 + return NULL;
1.1293 + }
1.1294 + assert(method->has_native_function(), "must have native code by now");
1.1295 + }
1.1296 +
1.1297 + // RedefineClasses() has replaced this method; just return
1.1298 + if (method->is_old()) {
1.1299 + return NULL;
1.1300 + }
1.1301 +
1.1302 + // JVMTI -- post_compile_event requires jmethod_id() that may require
1.1303 + // a lock the compiling thread can not acquire. Prefetch it here.
1.1304 + if (JvmtiExport::should_post_compiled_method_load()) {
1.1305 + method->jmethod_id();
1.1306 + }
1.1307 +
1.1308 + // do the compilation
1.1309 + if (method->is_native()) {
1.1310 + if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) {
1.1311 + // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that
1.1312 + // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime).
1.1313 + //
1.1314 + // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter
1.1315 + // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls.
1.1316 + AdapterHandlerLibrary::create_native_wrapper(method);
1.1317 + } else {
1.1318 + return NULL;
1.1319 + }
1.1320 + } else {
1.1321 + // If the compiler is shut off due to code cache getting full
1.1322 + // fail out now so blocking compiles dont hang the java thread
1.1323 + if (!should_compile_new_jobs()) {
1.1324 + CompilationPolicy::policy()->delay_compilation(method());
1.1325 + return NULL;
1.1326 + }
1.1327 + compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD);
1.1328 + }
1.1329 +
1.1330 + // return requested nmethod
1.1331 + // We accept a higher level osr method
1.1332 + return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1.1333 +}
1.1334 +
1.1335 +
1.1336 +// ------------------------------------------------------------------
1.1337 +// CompileBroker::compilation_is_complete
1.1338 +//
1.1339 +// See if compilation of this method is already complete.
1.1340 +bool CompileBroker::compilation_is_complete(methodHandle method,
1.1341 + int osr_bci,
1.1342 + int comp_level) {
1.1343 + bool is_osr = (osr_bci != standard_entry_bci);
1.1344 + if (is_osr) {
1.1345 + if (method->is_not_osr_compilable(comp_level)) {
1.1346 + return true;
1.1347 + } else {
1.1348 + nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
1.1349 + return (result != NULL);
1.1350 + }
1.1351 + } else {
1.1352 + if (method->is_not_compilable(comp_level)) {
1.1353 + return true;
1.1354 + } else {
1.1355 + nmethod* result = method->code();
1.1356 + if (result == NULL) return false;
1.1357 + return comp_level == result->comp_level();
1.1358 + }
1.1359 + }
1.1360 +}
1.1361 +
1.1362 +
1.1363 +// ------------------------------------------------------------------
1.1364 +// CompileBroker::compilation_is_in_queue
1.1365 +//
1.1366 +// See if this compilation is already requested.
1.1367 +//
1.1368 +// Implementation note: there is only a single "is in queue" bit
1.1369 +// for each method. This means that the check below is overly
1.1370 +// conservative in the sense that an osr compilation in the queue
1.1371 +// will block a normal compilation from entering the queue (and vice
1.1372 +// versa). This can be remedied by a full queue search to disambiguate
1.1373 +// cases. If it is deemed profitible, this may be done.
1.1374 +bool CompileBroker::compilation_is_in_queue(methodHandle method,
1.1375 + int osr_bci) {
1.1376 + return method->queued_for_compilation();
1.1377 +}
1.1378 +
1.1379 +// ------------------------------------------------------------------
1.1380 +// CompileBroker::compilation_is_prohibited
1.1381 +//
1.1382 +// See if this compilation is not allowed.
1.1383 +bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
1.1384 + bool is_native = method->is_native();
1.1385 + // Some compilers may not support the compilation of natives.
1.1386 + AbstractCompiler *comp = compiler(comp_level);
1.1387 + if (is_native &&
1.1388 + (!CICompileNatives || comp == NULL || !comp->supports_native())) {
1.1389 + method->set_not_compilable_quietly(comp_level);
1.1390 + return true;
1.1391 + }
1.1392 +
1.1393 + bool is_osr = (osr_bci != standard_entry_bci);
1.1394 + // Some compilers may not support on stack replacement.
1.1395 + if (is_osr &&
1.1396 + (!CICompileOSR || comp == NULL || !comp->supports_osr())) {
1.1397 + method->set_not_osr_compilable(comp_level);
1.1398 + return true;
1.1399 + }
1.1400 +
1.1401 + // The method may be explicitly excluded by the user.
1.1402 + bool quietly;
1.1403 + if (CompilerOracle::should_exclude(method, quietly)) {
1.1404 + if (!quietly) {
1.1405 + // This does not happen quietly...
1.1406 + ResourceMark rm;
1.1407 + tty->print("### Excluding %s:%s",
1.1408 + method->is_native() ? "generation of native wrapper" : "compile",
1.1409 + (method->is_static() ? " static" : ""));
1.1410 + method->print_short_name(tty);
1.1411 + tty->cr();
1.1412 + }
1.1413 + method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle");
1.1414 + }
1.1415 +
1.1416 + return false;
1.1417 +}
1.1418 +
1.1419 +/**
1.1420 + * Generate serialized IDs for compilation requests. If certain debugging flags are used
1.1421 + * and the ID is not within the specified range, the method is not compiled and 0 is returned.
1.1422 + * The function also allows to generate separate compilation IDs for OSR compilations.
1.1423 + */
1.1424 +int CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
1.1425 +#ifdef ASSERT
1.1426 + bool is_osr = (osr_bci != standard_entry_bci);
1.1427 + int id;
1.1428 + if (method->is_native()) {
1.1429 + assert(!is_osr, "can't be osr");
1.1430 + // Adapters, native wrappers and method handle intrinsics
1.1431 + // should be generated always.
1.1432 + return Atomic::add(1, &_compilation_id);
1.1433 + } else if (CICountOSR && is_osr) {
1.1434 + id = Atomic::add(1, &_osr_compilation_id);
1.1435 + if (CIStartOSR <= id && id < CIStopOSR) {
1.1436 + return id;
1.1437 + }
1.1438 + } else {
1.1439 + id = Atomic::add(1, &_compilation_id);
1.1440 + if (CIStart <= id && id < CIStop) {
1.1441 + return id;
1.1442 + }
1.1443 + }
1.1444 +
1.1445 + // Method was not in the appropriate compilation range.
1.1446 + method->set_not_compilable_quietly();
1.1447 + return 0;
1.1448 +#else
1.1449 + // CICountOSR is a develop flag and set to 'false' by default. In a product built,
1.1450 + // only _compilation_id is incremented.
1.1451 + return Atomic::add(1, &_compilation_id);
1.1452 +#endif
1.1453 +}
1.1454 +
1.1455 +
1.1456 +// ------------------------------------------------------------------
1.1457 +// CompileBroker::is_compile_blocking
1.1458 +//
1.1459 +// Should the current thread be blocked until this compilation request
1.1460 +// has been fulfilled?
1.1461 +bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
1.1462 + assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock");
1.1463 + return !BackgroundCompilation;
1.1464 +}
1.1465 +
1.1466 +
1.1467 +// ------------------------------------------------------------------
1.1468 +// CompileBroker::preload_classes
1.1469 +void CompileBroker::preload_classes(methodHandle method, TRAPS) {
1.1470 + // Move this code over from c1_Compiler.cpp
1.1471 + ShouldNotReachHere();
1.1472 +}
1.1473 +
1.1474 +
1.1475 +// ------------------------------------------------------------------
1.1476 +// CompileBroker::create_compile_task
1.1477 +//
1.1478 +// Create a CompileTask object representing the current request for
1.1479 +// compilation. Add this task to the queue.
1.1480 +CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1.1481 + int compile_id,
1.1482 + methodHandle method,
1.1483 + int osr_bci,
1.1484 + int comp_level,
1.1485 + methodHandle hot_method,
1.1486 + int hot_count,
1.1487 + const char* comment,
1.1488 + bool blocking) {
1.1489 + CompileTask* new_task = allocate_task();
1.1490 + new_task->initialize(compile_id, method, osr_bci, comp_level,
1.1491 + hot_method, hot_count, comment,
1.1492 + blocking);
1.1493 + queue->add(new_task);
1.1494 + return new_task;
1.1495 +}
1.1496 +
1.1497 +
1.1498 +// ------------------------------------------------------------------
1.1499 +// CompileBroker::allocate_task
1.1500 +//
1.1501 +// Allocate a CompileTask, from the free list if possible.
1.1502 +CompileTask* CompileBroker::allocate_task() {
1.1503 + MutexLocker locker(CompileTaskAlloc_lock);
1.1504 + CompileTask* task = NULL;
1.1505 + if (_task_free_list != NULL) {
1.1506 + task = _task_free_list;
1.1507 + _task_free_list = task->next();
1.1508 + task->set_next(NULL);
1.1509 + } else {
1.1510 + task = new CompileTask();
1.1511 + task->set_next(NULL);
1.1512 + }
1.1513 + return task;
1.1514 +}
1.1515 +
1.1516 +
1.1517 +// ------------------------------------------------------------------
1.1518 +// CompileBroker::free_task
1.1519 +//
1.1520 +// Add a task to the free list.
1.1521 +void CompileBroker::free_task(CompileTask* task) {
1.1522 + MutexLocker locker(CompileTaskAlloc_lock);
1.1523 + task->free();
1.1524 + task->set_next(_task_free_list);
1.1525 + _task_free_list = task;
1.1526 +}
1.1527 +
1.1528 +
1.1529 +// ------------------------------------------------------------------
1.1530 +// CompileBroker::wait_for_completion
1.1531 +//
1.1532 +// Wait for the given method CompileTask to complete.
1.1533 +void CompileBroker::wait_for_completion(CompileTask* task) {
1.1534 + if (CIPrintCompileQueue) {
1.1535 + tty->print_cr("BLOCKING FOR COMPILE");
1.1536 + }
1.1537 +
1.1538 + assert(task->is_blocking(), "can only wait on blocking task");
1.1539 +
1.1540 + JavaThread *thread = JavaThread::current();
1.1541 + thread->set_blocked_on_compilation(true);
1.1542 +
1.1543 + methodHandle method(thread, task->method());
1.1544 + {
1.1545 + MutexLocker waiter(task->lock(), thread);
1.1546 +
1.1547 + while (!task->is_complete())
1.1548 + task->lock()->wait();
1.1549 + }
1.1550 + // It is harmless to check this status without the lock, because
1.1551 + // completion is a stable property (until the task object is recycled).
1.1552 + assert(task->is_complete(), "Compilation should have completed");
1.1553 + assert(task->code_handle() == NULL, "must be reset");
1.1554 +
1.1555 + thread->set_blocked_on_compilation(false);
1.1556 +
1.1557 + // By convention, the waiter is responsible for recycling a
1.1558 + // blocking CompileTask. Since there is only one waiter ever
1.1559 + // waiting on a CompileTask, we know that no one else will
1.1560 + // be using this CompileTask; we can free it.
1.1561 + free_task(task);
1.1562 +}
1.1563 +
1.1564 +// Initialize compiler thread(s) + compiler object(s). The postcondition
1.1565 +// of this function is that the compiler runtimes are initialized and that
1.1566 +//compiler threads can start compiling.
1.1567 +bool CompileBroker::init_compiler_runtime() {
1.1568 + CompilerThread* thread = CompilerThread::current();
1.1569 + AbstractCompiler* comp = thread->compiler();
1.1570 + // Final sanity check - the compiler object must exist
1.1571 + guarantee(comp != NULL, "Compiler object must exist");
1.1572 +
1.1573 + int system_dictionary_modification_counter;
1.1574 + {
1.1575 + MutexLocker locker(Compile_lock, thread);
1.1576 + system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1.1577 + }
1.1578 +
1.1579 + {
1.1580 + // Must switch to native to allocate ci_env
1.1581 + ThreadToNativeFromVM ttn(thread);
1.1582 + ciEnv ci_env(NULL, system_dictionary_modification_counter);
1.1583 + // Cache Jvmti state
1.1584 + ci_env.cache_jvmti_state();
1.1585 + // Cache DTrace flags
1.1586 + ci_env.cache_dtrace_flags();
1.1587 +
1.1588 + // Switch back to VM state to do compiler initialization
1.1589 + ThreadInVMfromNative tv(thread);
1.1590 + ResetNoHandleMark rnhm;
1.1591 +
1.1592 +
1.1593 + if (!comp->is_shark()) {
1.1594 + // Perform per-thread and global initializations
1.1595 + comp->initialize();
1.1596 + }
1.1597 + }
1.1598 +
1.1599 + if (comp->is_failed()) {
1.1600 + disable_compilation_forever();
1.1601 + // If compiler initialization failed, no compiler thread that is specific to a
1.1602 + // particular compiler runtime will ever start to compile methods.
1.1603 +
1.1604 + shutdown_compiler_runtime(comp, thread);
1.1605 + return false;
1.1606 + }
1.1607 +
1.1608 + // C1 specific check
1.1609 + if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) {
1.1610 + warning("Initialization of %s thread failed (no space to run compilers)", thread->name());
1.1611 + return false;
1.1612 + }
1.1613 +
1.1614 + return true;
1.1615 +}
1.1616 +
1.1617 +// If C1 and/or C2 initialization failed, we shut down all compilation.
1.1618 +// We do this to keep things simple. This can be changed if it ever turns out to be
1.1619 +// a problem.
1.1620 +void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) {
1.1621 + // Free buffer blob, if allocated
1.1622 + if (thread->get_buffer_blob() != NULL) {
1.1623 + MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1.1624 + CodeCache::free(thread->get_buffer_blob());
1.1625 + }
1.1626 +
1.1627 + if (comp->should_perform_shutdown()) {
1.1628 + // There are two reasons for shutting down the compiler
1.1629 + // 1) compiler runtime initialization failed
1.1630 + // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing
1.1631 + warning("Shutting down compiler %s (no space to run compilers)", comp->name());
1.1632 +
1.1633 + // Only one thread per compiler runtime object enters here
1.1634 + // Set state to shut down
1.1635 + comp->set_shut_down();
1.1636 +
1.1637 + MutexLocker mu(MethodCompileQueue_lock, thread);
1.1638 + CompileQueue* queue;
1.1639 + if (_c1_method_queue != NULL) {
1.1640 + _c1_method_queue->delete_all();
1.1641 + queue = _c1_method_queue;
1.1642 + _c1_method_queue = NULL;
1.1643 + delete _c1_method_queue;
1.1644 + }
1.1645 +
1.1646 + if (_c2_method_queue != NULL) {
1.1647 + _c2_method_queue->delete_all();
1.1648 + queue = _c2_method_queue;
1.1649 + _c2_method_queue = NULL;
1.1650 + delete _c2_method_queue;
1.1651 + }
1.1652 +
1.1653 + // We could delete compiler runtimes also. However, there are references to
1.1654 + // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then
1.1655 + // fail. This can be done later if necessary.
1.1656 + }
1.1657 +}
1.1658 +
1.1659 +// ------------------------------------------------------------------
1.1660 +// CompileBroker::compiler_thread_loop
1.1661 +//
1.1662 +// The main loop run by a CompilerThread.
1.1663 +void CompileBroker::compiler_thread_loop() {
1.1664 + CompilerThread* thread = CompilerThread::current();
1.1665 + CompileQueue* queue = thread->queue();
1.1666 + // For the thread that initializes the ciObjectFactory
1.1667 + // this resource mark holds all the shared objects
1.1668 + ResourceMark rm;
1.1669 +
1.1670 + // First thread to get here will initialize the compiler interface
1.1671 +
1.1672 + if (!ciObjectFactory::is_initialized()) {
1.1673 + ASSERT_IN_VM;
1.1674 + MutexLocker only_one (CompileThread_lock, thread);
1.1675 + if (!ciObjectFactory::is_initialized()) {
1.1676 + ciObjectFactory::initialize();
1.1677 + }
1.1678 + }
1.1679 +
1.1680 + // Open a log.
1.1681 + if (LogCompilation) {
1.1682 + init_compiler_thread_log();
1.1683 + }
1.1684 + CompileLog* log = thread->log();
1.1685 + if (log != NULL) {
1.1686 + log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'",
1.1687 + thread->name(),
1.1688 + os::current_thread_id(),
1.1689 + os::current_process_id());
1.1690 + log->stamp();
1.1691 + log->end_elem();
1.1692 + }
1.1693 +
1.1694 + // If compiler thread/runtime initialization fails, exit the compiler thread
1.1695 + if (!init_compiler_runtime()) {
1.1696 + return;
1.1697 + }
1.1698 +
1.1699 + // Poll for new compilation tasks as long as the JVM runs. Compilation
1.1700 + // should only be disabled if something went wrong while initializing the
1.1701 + // compiler runtimes. This, in turn, should not happen. The only known case
1.1702 + // when compiler runtime initialization fails is if there is not enough free
1.1703 + // space in the code cache to generate the necessary stubs, etc.
1.1704 + while (!is_compilation_disabled_forever()) {
1.1705 + // We need this HandleMark to avoid leaking VM handles.
1.1706 + HandleMark hm(thread);
1.1707 +
1.1708 + if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) {
1.1709 + // the code cache is really full
1.1710 + handle_full_code_cache();
1.1711 + }
1.1712 +
1.1713 + CompileTask* task = queue->get();
1.1714 + if (task == NULL) {
1.1715 + continue;
1.1716 + }
1.1717 +
1.1718 + // Give compiler threads an extra quanta. They tend to be bursty and
1.1719 + // this helps the compiler to finish up the job.
1.1720 + if( CompilerThreadHintNoPreempt )
1.1721 + os::hint_no_preempt();
1.1722 +
1.1723 + // trace per thread time and compile statistics
1.1724 + CompilerCounters* counters = ((CompilerThread*)thread)->counters();
1.1725 + PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
1.1726 +
1.1727 + // Assign the task to the current thread. Mark this compilation
1.1728 + // thread as active for the profiler.
1.1729 + CompileTaskWrapper ctw(task);
1.1730 + nmethodLocker result_handle; // (handle for the nmethod produced by this task)
1.1731 + task->set_code_handle(&result_handle);
1.1732 + methodHandle method(thread, task->method());
1.1733 +
1.1734 + // Never compile a method if breakpoints are present in it
1.1735 + if (method()->number_of_breakpoints() == 0) {
1.1736 + // Compile the method.
1.1737 + if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
1.1738 +#ifdef COMPILER1
1.1739 + // Allow repeating compilations for the purpose of benchmarking
1.1740 + // compile speed. This is not useful for customers.
1.1741 + if (CompilationRepeat != 0) {
1.1742 + int compile_count = CompilationRepeat;
1.1743 + while (compile_count > 0) {
1.1744 + invoke_compiler_on_method(task);
1.1745 + nmethod* nm = method->code();
1.1746 + if (nm != NULL) {
1.1747 + nm->make_zombie();
1.1748 + method->clear_code();
1.1749 + }
1.1750 + compile_count--;
1.1751 + }
1.1752 + }
1.1753 +#endif /* COMPILER1 */
1.1754 + invoke_compiler_on_method(task);
1.1755 + } else {
1.1756 + // After compilation is disabled, remove remaining methods from queue
1.1757 + method->clear_queued_for_compilation();
1.1758 + }
1.1759 + }
1.1760 + }
1.1761 +
1.1762 + // Shut down compiler runtime
1.1763 + shutdown_compiler_runtime(thread->compiler(), thread);
1.1764 +}
1.1765 +
1.1766 +// ------------------------------------------------------------------
1.1767 +// CompileBroker::init_compiler_thread_log
1.1768 +//
1.1769 +// Set up state required by +LogCompilation.
1.1770 +void CompileBroker::init_compiler_thread_log() {
1.1771 + CompilerThread* thread = CompilerThread::current();
1.1772 + char file_name[4*K];
1.1773 + FILE* fp = NULL;
1.1774 + intx thread_id = os::current_thread_id();
1.1775 + for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
1.1776 + const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
1.1777 + if (dir == NULL) {
1.1778 + jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log",
1.1779 + thread_id, os::current_process_id());
1.1780 + } else {
1.1781 + jio_snprintf(file_name, sizeof(file_name),
1.1782 + "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
1.1783 + os::file_separator(), thread_id, os::current_process_id());
1.1784 + }
1.1785 +
1.1786 + fp = fopen(file_name, "at");
1.1787 + if (fp != NULL) {
1.1788 + if (LogCompilation && Verbose) {
1.1789 + tty->print_cr("Opening compilation log %s", file_name);
1.1790 + }
1.1791 + CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id);
1.1792 + thread->init_log(log);
1.1793 +
1.1794 + if (xtty != NULL) {
1.1795 + ttyLocker ttyl;
1.1796 + // Record any per thread log files
1.1797 + xtty->elem("thread_logfile thread='" INTX_FORMAT "' filename='%s'", thread_id, file_name);
1.1798 + }
1.1799 + return;
1.1800 + }
1.1801 + }
1.1802 + warning("Cannot open log file: %s", file_name);
1.1803 +}
1.1804 +
1.1805 +// ------------------------------------------------------------------
1.1806 +// CompileBroker::set_should_block
1.1807 +//
1.1808 +// Set _should_block.
1.1809 +// Call this from the VM, with Threads_lock held and a safepoint requested.
1.1810 +void CompileBroker::set_should_block() {
1.1811 + assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
1.1812 + assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
1.1813 +#ifndef PRODUCT
1.1814 + if (PrintCompilation && (Verbose || WizardMode))
1.1815 + tty->print_cr("notifying compiler thread pool to block");
1.1816 +#endif
1.1817 + _should_block = true;
1.1818 +}
1.1819 +
1.1820 +// ------------------------------------------------------------------
1.1821 +// CompileBroker::maybe_block
1.1822 +//
1.1823 +// Call this from the compiler at convenient points, to poll for _should_block.
1.1824 +void CompileBroker::maybe_block() {
1.1825 + if (_should_block) {
1.1826 +#ifndef PRODUCT
1.1827 + if (PrintCompilation && (Verbose || WizardMode))
1.1828 + tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", p2i(Thread::current()));
1.1829 +#endif
1.1830 + ThreadInVMfromNative tivfn(JavaThread::current());
1.1831 + }
1.1832 +}
1.1833 +
1.1834 +// wrapper for CodeCache::print_summary()
1.1835 +static void codecache_print(bool detailed)
1.1836 +{
1.1837 + ResourceMark rm;
1.1838 + stringStream s;
1.1839 + // Dump code cache into a buffer before locking the tty,
1.1840 + {
1.1841 + MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1.1842 + CodeCache::print_summary(&s, detailed);
1.1843 + }
1.1844 + ttyLocker ttyl;
1.1845 + tty->print("%s", s.as_string());
1.1846 +}
1.1847 +
1.1848 +// ------------------------------------------------------------------
1.1849 +// CompileBroker::invoke_compiler_on_method
1.1850 +//
1.1851 +// Compile a method.
1.1852 +//
1.1853 +void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
1.1854 + if (PrintCompilation) {
1.1855 + ResourceMark rm;
1.1856 + task->print_line();
1.1857 + }
1.1858 + elapsedTimer time;
1.1859 +
1.1860 + CompilerThread* thread = CompilerThread::current();
1.1861 + ResourceMark rm(thread);
1.1862 +
1.1863 + if (LogEvents) {
1.1864 + _compilation_log->log_compile(thread, task);
1.1865 + }
1.1866 +
1.1867 + // Common flags.
1.1868 + uint compile_id = task->compile_id();
1.1869 + int osr_bci = task->osr_bci();
1.1870 + bool is_osr = (osr_bci != standard_entry_bci);
1.1871 + bool should_log = (thread->log() != NULL);
1.1872 + bool should_break = false;
1.1873 + int task_level = task->comp_level();
1.1874 + {
1.1875 + // create the handle inside it's own block so it can't
1.1876 + // accidentally be referenced once the thread transitions to
1.1877 + // native. The NoHandleMark before the transition should catch
1.1878 + // any cases where this occurs in the future.
1.1879 + methodHandle method(thread, task->method());
1.1880 + should_break = check_break_at(method, compile_id, is_osr);
1.1881 + if (should_log && !CompilerOracle::should_log(method)) {
1.1882 + should_log = false;
1.1883 + }
1.1884 + assert(!method->is_native(), "no longer compile natives");
1.1885 +
1.1886 + // Save information about this method in case of failure.
1.1887 + set_last_compile(thread, method, is_osr, task_level);
1.1888 +
1.1889 + DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level));
1.1890 + }
1.1891 +
1.1892 + // Allocate a new set of JNI handles.
1.1893 + push_jni_handle_block();
1.1894 + Method* target_handle = task->method();
1.1895 + int compilable = ciEnv::MethodCompilable;
1.1896 + {
1.1897 + int system_dictionary_modification_counter;
1.1898 + {
1.1899 + MutexLocker locker(Compile_lock, thread);
1.1900 + system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1.1901 + }
1.1902 +
1.1903 + NoHandleMark nhm;
1.1904 + ThreadToNativeFromVM ttn(thread);
1.1905 +
1.1906 + ciEnv ci_env(task, system_dictionary_modification_counter);
1.1907 + if (should_break) {
1.1908 + ci_env.set_break_at_compile(true);
1.1909 + }
1.1910 + if (should_log) {
1.1911 + ci_env.set_log(thread->log());
1.1912 + }
1.1913 + assert(thread->env() == &ci_env, "set by ci_env");
1.1914 + // The thread-env() field is cleared in ~CompileTaskWrapper.
1.1915 +
1.1916 + // Cache Jvmti state
1.1917 + ci_env.cache_jvmti_state();
1.1918 +
1.1919 + // Cache DTrace flags
1.1920 + ci_env.cache_dtrace_flags();
1.1921 +
1.1922 + ciMethod* target = ci_env.get_method_from_handle(target_handle);
1.1923 +
1.1924 + TraceTime t1("compilation", &time);
1.1925 + EventCompilation event;
1.1926 +
1.1927 + AbstractCompiler *comp = compiler(task_level);
1.1928 + if (comp == NULL) {
1.1929 + ci_env.record_method_not_compilable("no compiler", !TieredCompilation);
1.1930 + } else {
1.1931 + comp->compile_method(&ci_env, target, osr_bci);
1.1932 + }
1.1933 +
1.1934 + if (!ci_env.failing() && task->code() == NULL) {
1.1935 + //assert(false, "compiler should always document failure");
1.1936 + // The compiler elected, without comment, not to register a result.
1.1937 + // Do not attempt further compilations of this method.
1.1938 + ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
1.1939 + }
1.1940 +
1.1941 + // Copy this bit to the enclosing block:
1.1942 + compilable = ci_env.compilable();
1.1943 +
1.1944 + if (ci_env.failing()) {
1.1945 + const char* retry_message = ci_env.retry_message();
1.1946 + if (_compilation_log != NULL) {
1.1947 + _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message);
1.1948 + }
1.1949 + if (PrintCompilation) {
1.1950 + FormatBufferResource msg = retry_message != NULL ?
1.1951 + err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) :
1.1952 + err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason());
1.1953 + task->print_compilation(tty, msg);
1.1954 + }
1.1955 + } else {
1.1956 + task->mark_success();
1.1957 + task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
1.1958 + if (_compilation_log != NULL) {
1.1959 + nmethod* code = task->code();
1.1960 + if (code != NULL) {
1.1961 + _compilation_log->log_nmethod(thread, code);
1.1962 + }
1.1963 + }
1.1964 + }
1.1965 + // simulate crash during compilation
1.1966 + assert(task->compile_id() != CICrashAt, "just as planned");
1.1967 + if (event.should_commit()) {
1.1968 + event.set_method(target->get_Method());
1.1969 + event.set_compileID(compile_id);
1.1970 + event.set_compileLevel(task->comp_level());
1.1971 + event.set_succeded(task->is_success());
1.1972 + event.set_isOsr(is_osr);
1.1973 + event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size());
1.1974 + event.set_inlinedBytes(task->num_inlined_bytecodes());
1.1975 + event.commit();
1.1976 + }
1.1977 + }
1.1978 + pop_jni_handle_block();
1.1979 +
1.1980 + methodHandle method(thread, task->method());
1.1981 +
1.1982 + DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success());
1.1983 +
1.1984 + collect_statistics(thread, time, task);
1.1985 +
1.1986 + if (PrintCompilation && PrintCompilation2) {
1.1987 + tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp
1.1988 + tty->print("%4d ", compile_id); // print compilation number
1.1989 + tty->print("%s ", (is_osr ? "%" : " "));
1.1990 + if (task->code() != NULL) {
1.1991 + tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size());
1.1992 + }
1.1993 + tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes());
1.1994 + }
1.1995 +
1.1996 + if (PrintCodeCacheOnCompilation)
1.1997 + codecache_print(/* detailed= */ false);
1.1998 +
1.1999 + // Disable compilation, if required.
1.2000 + switch (compilable) {
1.2001 + case ciEnv::MethodCompilable_never:
1.2002 + if (is_osr)
1.2003 + method->set_not_osr_compilable_quietly();
1.2004 + else
1.2005 + method->set_not_compilable_quietly();
1.2006 + break;
1.2007 + case ciEnv::MethodCompilable_not_at_tier:
1.2008 + if (is_osr)
1.2009 + method->set_not_osr_compilable_quietly(task_level);
1.2010 + else
1.2011 + method->set_not_compilable_quietly(task_level);
1.2012 + break;
1.2013 + }
1.2014 +
1.2015 + // Note that the queued_for_compilation bits are cleared without
1.2016 + // protection of a mutex. [They were set by the requester thread,
1.2017 + // when adding the task to the complie queue -- at which time the
1.2018 + // compile queue lock was held. Subsequently, we acquired the compile
1.2019 + // queue lock to get this task off the compile queue; thus (to belabour
1.2020 + // the point somewhat) our clearing of the bits must be occurring
1.2021 + // only after the setting of the bits. See also 14012000 above.
1.2022 + method->clear_queued_for_compilation();
1.2023 +
1.2024 +#ifdef ASSERT
1.2025 + if (CollectedHeap::fired_fake_oom()) {
1.2026 + // The current compile received a fake OOM during compilation so
1.2027 + // go ahead and exit the VM since the test apparently succeeded
1.2028 + tty->print_cr("*** Shutting down VM after successful fake OOM");
1.2029 + vm_exit(0);
1.2030 + }
1.2031 +#endif
1.2032 +}
1.2033 +
1.2034 +/**
1.2035 + * The CodeCache is full. Print out warning and disable compilation
1.2036 + * or try code cache cleaning so compilation can continue later.
1.2037 + */
1.2038 +void CompileBroker::handle_full_code_cache() {
1.2039 + UseInterpreter = true;
1.2040 + if (UseCompiler || AlwaysCompileLoopMethods ) {
1.2041 + if (xtty != NULL) {
1.2042 + ResourceMark rm;
1.2043 + stringStream s;
1.2044 + // Dump code cache state into a buffer before locking the tty,
1.2045 + // because log_state() will use locks causing lock conflicts.
1.2046 + CodeCache::log_state(&s);
1.2047 + // Lock to prevent tearing
1.2048 + ttyLocker ttyl;
1.2049 + xtty->begin_elem("code_cache_full");
1.2050 + xtty->print("%s", s.as_string());
1.2051 + xtty->stamp();
1.2052 + xtty->end_elem();
1.2053 + }
1.2054 +
1.2055 + CodeCache::report_codemem_full();
1.2056 +
1.2057 +#ifndef PRODUCT
1.2058 + if (CompileTheWorld || ExitOnFullCodeCache) {
1.2059 + codecache_print(/* detailed= */ true);
1.2060 + before_exit(JavaThread::current());
1.2061 + exit_globals(); // will delete tty
1.2062 + vm_direct_exit(CompileTheWorld ? 0 : 1);
1.2063 + }
1.2064 +#endif
1.2065 + if (UseCodeCacheFlushing) {
1.2066 + // Since code cache is full, immediately stop new compiles
1.2067 + if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) {
1.2068 + NMethodSweeper::log_sweep("disable_compiler");
1.2069 + }
1.2070 + // Switch to 'vm_state'. This ensures that possibly_sweep() can be called
1.2071 + // without having to consider the state in which the current thread is.
1.2072 + ThreadInVMfromUnknown in_vm;
1.2073 + NMethodSweeper::possibly_sweep();
1.2074 + } else {
1.2075 + disable_compilation_forever();
1.2076 + }
1.2077 +
1.2078 + // Print warning only once
1.2079 + if (should_print_compiler_warning()) {
1.2080 + warning("CodeCache is full. Compiler has been disabled.");
1.2081 + warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
1.2082 + codecache_print(/* detailed= */ true);
1.2083 + }
1.2084 + }
1.2085 +}
1.2086 +
1.2087 +// ------------------------------------------------------------------
1.2088 +// CompileBroker::set_last_compile
1.2089 +//
1.2090 +// Record this compilation for debugging purposes.
1.2091 +void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
1.2092 + ResourceMark rm;
1.2093 + char* method_name = method->name()->as_C_string();
1.2094 + strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
1.2095 + _last_method_compiled[CompileBroker::name_buffer_length - 1] = '\0'; // ensure null terminated
1.2096 + char current_method[CompilerCounters::cmname_buffer_length];
1.2097 + size_t maxLen = CompilerCounters::cmname_buffer_length;
1.2098 +
1.2099 + if (UsePerfData) {
1.2100 + const char* class_name = method->method_holder()->name()->as_C_string();
1.2101 +
1.2102 + size_t s1len = strlen(class_name);
1.2103 + size_t s2len = strlen(method_name);
1.2104 +
1.2105 + // check if we need to truncate the string
1.2106 + if (s1len + s2len + 2 > maxLen) {
1.2107 +
1.2108 + // the strategy is to lop off the leading characters of the
1.2109 + // class name and the trailing characters of the method name.
1.2110 +
1.2111 + if (s2len + 2 > maxLen) {
1.2112 + // lop of the entire class name string, let snprintf handle
1.2113 + // truncation of the method name.
1.2114 + class_name += s1len; // null string
1.2115 + }
1.2116 + else {
1.2117 + // lop off the extra characters from the front of the class name
1.2118 + class_name += ((s1len + s2len + 2) - maxLen);
1.2119 + }
1.2120 + }
1.2121 +
1.2122 + jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
1.2123 + }
1.2124 +
1.2125 + if (CICountOSR && is_osr) {
1.2126 + _last_compile_type = osr_compile;
1.2127 + } else {
1.2128 + _last_compile_type = normal_compile;
1.2129 + }
1.2130 + _last_compile_level = comp_level;
1.2131 +
1.2132 + if (UsePerfData) {
1.2133 + CompilerCounters* counters = thread->counters();
1.2134 + counters->set_current_method(current_method);
1.2135 + counters->set_compile_type((jlong)_last_compile_type);
1.2136 + }
1.2137 +}
1.2138 +
1.2139 +
1.2140 +// ------------------------------------------------------------------
1.2141 +// CompileBroker::push_jni_handle_block
1.2142 +//
1.2143 +// Push on a new block of JNI handles.
1.2144 +void CompileBroker::push_jni_handle_block() {
1.2145 + JavaThread* thread = JavaThread::current();
1.2146 +
1.2147 + // Allocate a new block for JNI handles.
1.2148 + // Inlined code from jni_PushLocalFrame()
1.2149 + JNIHandleBlock* java_handles = thread->active_handles();
1.2150 + JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
1.2151 + assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
1.2152 + compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
1.2153 + thread->set_active_handles(compile_handles);
1.2154 +}
1.2155 +
1.2156 +
1.2157 +// ------------------------------------------------------------------
1.2158 +// CompileBroker::pop_jni_handle_block
1.2159 +//
1.2160 +// Pop off the current block of JNI handles.
1.2161 +void CompileBroker::pop_jni_handle_block() {
1.2162 + JavaThread* thread = JavaThread::current();
1.2163 +
1.2164 + // Release our JNI handle block
1.2165 + JNIHandleBlock* compile_handles = thread->active_handles();
1.2166 + JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
1.2167 + thread->set_active_handles(java_handles);
1.2168 + compile_handles->set_pop_frame_link(NULL);
1.2169 + JNIHandleBlock::release_block(compile_handles, thread); // may block
1.2170 +}
1.2171 +
1.2172 +
1.2173 +// ------------------------------------------------------------------
1.2174 +// CompileBroker::check_break_at
1.2175 +//
1.2176 +// Should the compilation break at the current compilation.
1.2177 +bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
1.2178 + if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
1.2179 + return true;
1.2180 + } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
1.2181 + return true;
1.2182 + } else {
1.2183 + return (compile_id == CIBreakAt);
1.2184 + }
1.2185 +}
1.2186 +
1.2187 +// ------------------------------------------------------------------
1.2188 +// CompileBroker::collect_statistics
1.2189 +//
1.2190 +// Collect statistics about the compilation.
1.2191 +
1.2192 +void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
1.2193 + bool success = task->is_success();
1.2194 + methodHandle method (thread, task->method());
1.2195 + uint compile_id = task->compile_id();
1.2196 + bool is_osr = (task->osr_bci() != standard_entry_bci);
1.2197 + nmethod* code = task->code();
1.2198 + CompilerCounters* counters = thread->counters();
1.2199 +
1.2200 + assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
1.2201 + MutexLocker locker(CompileStatistics_lock);
1.2202 +
1.2203 + // _perf variables are production performance counters which are
1.2204 + // updated regardless of the setting of the CITime and CITimeEach flags
1.2205 + //
1.2206 + if (!success) {
1.2207 + _total_bailout_count++;
1.2208 + if (UsePerfData) {
1.2209 + _perf_last_failed_method->set_value(counters->current_method());
1.2210 + _perf_last_failed_type->set_value(counters->compile_type());
1.2211 + _perf_total_bailout_count->inc();
1.2212 + }
1.2213 + } else if (code == NULL) {
1.2214 + if (UsePerfData) {
1.2215 + _perf_last_invalidated_method->set_value(counters->current_method());
1.2216 + _perf_last_invalidated_type->set_value(counters->compile_type());
1.2217 + _perf_total_invalidated_count->inc();
1.2218 + }
1.2219 + _total_invalidated_count++;
1.2220 + } else {
1.2221 + // Compilation succeeded
1.2222 +
1.2223 + // update compilation ticks - used by the implementation of
1.2224 + // java.lang.management.CompilationMBean
1.2225 + _perf_total_compilation->inc(time.ticks());
1.2226 +
1.2227 + _t_total_compilation.add(time);
1.2228 + _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time;
1.2229 +
1.2230 + if (CITime) {
1.2231 + if (is_osr) {
1.2232 + _t_osr_compilation.add(time);
1.2233 + _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1.2234 + } else {
1.2235 + _t_standard_compilation.add(time);
1.2236 + _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1.2237 + }
1.2238 + }
1.2239 +
1.2240 + if (UsePerfData) {
1.2241 + // save the name of the last method compiled
1.2242 + _perf_last_method->set_value(counters->current_method());
1.2243 + _perf_last_compile_type->set_value(counters->compile_type());
1.2244 + _perf_last_compile_size->set_value(method->code_size() +
1.2245 + task->num_inlined_bytecodes());
1.2246 + if (is_osr) {
1.2247 + _perf_osr_compilation->inc(time.ticks());
1.2248 + _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1.2249 + } else {
1.2250 + _perf_standard_compilation->inc(time.ticks());
1.2251 + _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1.2252 + }
1.2253 + }
1.2254 +
1.2255 + if (CITimeEach) {
1.2256 + float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
1.2257 + tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
1.2258 + compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
1.2259 + }
1.2260 +
1.2261 + // Collect counts of successful compilations
1.2262 + _sum_nmethod_size += code->total_size();
1.2263 + _sum_nmethod_code_size += code->insts_size();
1.2264 + _total_compile_count++;
1.2265 +
1.2266 + if (UsePerfData) {
1.2267 + _perf_sum_nmethod_size->inc( code->total_size());
1.2268 + _perf_sum_nmethod_code_size->inc(code->insts_size());
1.2269 + _perf_total_compile_count->inc();
1.2270 + }
1.2271 +
1.2272 + if (is_osr) {
1.2273 + if (UsePerfData) _perf_total_osr_compile_count->inc();
1.2274 + _total_osr_compile_count++;
1.2275 + } else {
1.2276 + if (UsePerfData) _perf_total_standard_compile_count->inc();
1.2277 + _total_standard_compile_count++;
1.2278 + }
1.2279 + }
1.2280 + // set the current method for the thread to null
1.2281 + if (UsePerfData) counters->set_current_method("");
1.2282 +}
1.2283 +
1.2284 +const char* CompileBroker::compiler_name(int comp_level) {
1.2285 + AbstractCompiler *comp = CompileBroker::compiler(comp_level);
1.2286 + if (comp == NULL) {
1.2287 + return "no compiler";
1.2288 + } else {
1.2289 + return (comp->name());
1.2290 + }
1.2291 +}
1.2292 +
1.2293 +void CompileBroker::print_times() {
1.2294 + tty->cr();
1.2295 + tty->print_cr("Accumulated compiler times (for compiled methods only)");
1.2296 + tty->print_cr("------------------------------------------------");
1.2297 + //0000000000111111111122222222223333333333444444444455555555556666666666
1.2298 + //0123456789012345678901234567890123456789012345678901234567890123456789
1.2299 + tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
1.2300 + tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
1.2301 + CompileBroker::_t_standard_compilation.seconds(),
1.2302 + CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
1.2303 + tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count);
1.2304 +
1.2305 + AbstractCompiler *comp = compiler(CompLevel_simple);
1.2306 + if (comp != NULL) {
1.2307 + comp->print_timers();
1.2308 + }
1.2309 + comp = compiler(CompLevel_full_optimization);
1.2310 + if (comp != NULL) {
1.2311 + comp->print_timers();
1.2312 + }
1.2313 + tty->cr();
1.2314 + tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count);
1.2315 + tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count);
1.2316 + tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count);
1.2317 + int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
1.2318 + tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
1.2319 + tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
1.2320 + tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
1.2321 + int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
1.2322 + tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
1.2323 + tty->cr();
1.2324 + tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
1.2325 + tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
1.2326 +}
1.2327 +
1.2328 +// Debugging output for failure
1.2329 +void CompileBroker::print_last_compile() {
1.2330 + if ( _last_compile_level != CompLevel_none &&
1.2331 + compiler(_last_compile_level) != NULL &&
1.2332 + _last_method_compiled != NULL &&
1.2333 + _last_compile_type != no_compile) {
1.2334 + if (_last_compile_type == osr_compile) {
1.2335 + tty->print_cr("Last parse: [osr]%d+++(%d) %s",
1.2336 + _osr_compilation_id, _last_compile_level, _last_method_compiled);
1.2337 + } else {
1.2338 + tty->print_cr("Last parse: %d+++(%d) %s",
1.2339 + _compilation_id, _last_compile_level, _last_method_compiled);
1.2340 + }
1.2341 + }
1.2342 +}
1.2343 +
1.2344 +
1.2345 +void CompileBroker::print_compiler_threads_on(outputStream* st) {
1.2346 +#ifndef PRODUCT
1.2347 + st->print_cr("Compiler thread printing unimplemented.");
1.2348 + st->cr();
1.2349 +#endif
1.2350 +}
