1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/compiler/compileBroker.cpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,1857 @@
1.4 +/*
1.5 + * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "incls/_precompiled.incl"
1.29 +#include "incls/_compileBroker.cpp.incl"
1.30 +
1.31 +#ifdef DTRACE_ENABLED
1.32 +
1.33 +// Only bother with this argument setup if dtrace is available
1.34 +
1.35 +HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
1.36 + char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
1.37 +HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
1.38 + char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
1.39 +
1.40 +#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
1.41 + { \
1.42 + char* comp_name = (char*)(compiler)->name(); \
1.43 + symbolOop klass_name = (method)->klass_name(); \
1.44 + symbolOop name = (method)->name(); \
1.45 + symbolOop signature = (method)->signature(); \
1.46 + HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
1.47 + comp_name, strlen(comp_name), \
1.48 + klass_name->bytes(), klass_name->utf8_length(), \
1.49 + name->bytes(), name->utf8_length(), \
1.50 + signature->bytes(), signature->utf8_length()); \
1.51 + }
1.52 +
1.53 +#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
1.54 + { \
1.55 + char* comp_name = (char*)(compiler)->name(); \
1.56 + symbolOop klass_name = (method)->klass_name(); \
1.57 + symbolOop name = (method)->name(); \
1.58 + symbolOop signature = (method)->signature(); \
1.59 + HS_DTRACE_PROBE9(hotspot, method__compile__end, \
1.60 + comp_name, strlen(comp_name), \
1.61 + klass_name->bytes(), klass_name->utf8_length(), \
1.62 + name->bytes(), name->utf8_length(), \
1.63 + signature->bytes(), signature->utf8_length(), (success)); \
1.64 + }
1.65 +
1.66 +#else // ndef DTRACE_ENABLED
1.67 +
1.68 +#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
1.69 +#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
1.70 +
1.71 +#endif // ndef DTRACE_ENABLED
1.72 +
1.73 +bool CompileBroker::_initialized = false;
1.74 +volatile bool CompileBroker::_should_block = false;
1.75 +
1.76 +// The installed compiler(s)
1.77 +AbstractCompiler* CompileBroker::_compilers[2];
1.78 +
1.79 +// These counters are used for assigning id's to each compilation
1.80 +uint CompileBroker::_compilation_id = 0;
1.81 +uint CompileBroker::_osr_compilation_id = 0;
1.82 +
1.83 +// Debugging information
1.84 +int CompileBroker::_last_compile_type = no_compile;
1.85 +int CompileBroker::_last_compile_level = CompLevel_none;
1.86 +char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
1.87 +
1.88 +// Performance counters
1.89 +PerfCounter* CompileBroker::_perf_total_compilation = NULL;
1.90 +PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
1.91 +PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
1.92 +
1.93 +PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
1.94 +PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
1.95 +PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
1.96 +PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
1.97 +PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
1.98 +
1.99 +PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
1.100 +PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
1.101 +PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
1.102 +PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
1.103 +
1.104 +PerfStringVariable* CompileBroker::_perf_last_method = NULL;
1.105 +PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
1.106 +PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
1.107 +PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
1.108 +PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
1.109 +PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
1.110 +PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
1.111 +
1.112 +// Timers and counters for generating statistics
1.113 +elapsedTimer CompileBroker::_t_total_compilation;
1.114 +elapsedTimer CompileBroker::_t_osr_compilation;
1.115 +elapsedTimer CompileBroker::_t_standard_compilation;
1.116 +
1.117 +int CompileBroker::_total_bailout_count = 0;
1.118 +int CompileBroker::_total_invalidated_count = 0;
1.119 +int CompileBroker::_total_compile_count = 0;
1.120 +int CompileBroker::_total_osr_compile_count = 0;
1.121 +int CompileBroker::_total_standard_compile_count = 0;
1.122 +
1.123 +int CompileBroker::_sum_osr_bytes_compiled = 0;
1.124 +int CompileBroker::_sum_standard_bytes_compiled = 0;
1.125 +int CompileBroker::_sum_nmethod_size = 0;
1.126 +int CompileBroker::_sum_nmethod_code_size = 0;
1.127 +
1.128 +CompileQueue* CompileBroker::_method_queue = NULL;
1.129 +CompileTask* CompileBroker::_task_free_list = NULL;
1.130 +
1.131 +GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
1.132 +
1.133 +// CompileTaskWrapper
1.134 +//
1.135 +// Assign this task to the current thread. Deallocate the task
1.136 +// when the compilation is complete.
1.137 +class CompileTaskWrapper : StackObj {
1.138 +public:
1.139 + CompileTaskWrapper(CompileTask* task);
1.140 + ~CompileTaskWrapper();
1.141 +};
1.142 +
1.143 +CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
1.144 + CompilerThread* thread = CompilerThread::current();
1.145 + thread->set_task(task);
1.146 + CompileLog* log = thread->log();
1.147 + if (log != NULL) task->log_task_start(log);
1.148 +}
1.149 +
1.150 +CompileTaskWrapper::~CompileTaskWrapper() {
1.151 + CompilerThread* thread = CompilerThread::current();
1.152 + CompileTask* task = thread->task();
1.153 + CompileLog* log = thread->log();
1.154 + if (log != NULL) task->log_task_done(log);
1.155 + thread->set_task(NULL);
1.156 + task->set_code_handle(NULL);
1.157 + DEBUG_ONLY(thread->set_env((ciEnv*)badAddress));
1.158 + if (task->is_blocking()) {
1.159 + MutexLocker notifier(task->lock(), thread);
1.160 + task->mark_complete();
1.161 + // Notify the waiting thread that the compilation has completed.
1.162 + task->lock()->notify_all();
1.163 + } else {
1.164 + task->mark_complete();
1.165 +
1.166 + // By convention, the compiling thread is responsible for
1.167 + // recycling a non-blocking CompileTask.
1.168 + CompileBroker::free_task(task);
1.169 + }
1.170 +}
1.171 +
1.172 +
1.173 +// ------------------------------------------------------------------
1.174 +// CompileTask::initialize
1.175 +void CompileTask::initialize(int compile_id,
1.176 + methodHandle method,
1.177 + int osr_bci,
1.178 + int comp_level,
1.179 + methodHandle hot_method,
1.180 + int hot_count,
1.181 + const char* comment,
1.182 + bool is_blocking) {
1.183 + assert(!_lock->is_locked(), "bad locking");
1.184 +
1.185 + _compile_id = compile_id;
1.186 + _method = JNIHandles::make_global(method);
1.187 + _osr_bci = osr_bci;
1.188 + _is_blocking = is_blocking;
1.189 + _comp_level = comp_level;
1.190 + _num_inlined_bytecodes = 0;
1.191 +
1.192 + _is_complete = false;
1.193 + _is_success = false;
1.194 + _code_handle = NULL;
1.195 +
1.196 + _hot_method = NULL;
1.197 + _hot_count = hot_count;
1.198 + _time_queued = 0; // tidy
1.199 + _comment = comment;
1.200 +
1.201 + if (LogCompilation) {
1.202 + _time_queued = os::elapsed_counter();
1.203 + if (hot_method.not_null()) {
1.204 + if (hot_method == method) {
1.205 + _hot_method = _method;
1.206 + } else {
1.207 + _hot_method = JNIHandles::make_global(hot_method);
1.208 + }
1.209 + }
1.210 + }
1.211 +
1.212 + _next = NULL;
1.213 +}
1.214 +
1.215 +// ------------------------------------------------------------------
1.216 +// CompileTask::code/set_code
1.217 +nmethod* CompileTask::code() const {
1.218 + if (_code_handle == NULL) return NULL;
1.219 + return _code_handle->code();
1.220 +}
1.221 +void CompileTask::set_code(nmethod* nm) {
1.222 + if (_code_handle == NULL && nm == NULL) return;
1.223 + guarantee(_code_handle != NULL, "");
1.224 + _code_handle->set_code(nm);
1.225 + if (nm == NULL) _code_handle = NULL; // drop the handle also
1.226 +}
1.227 +
1.228 +// ------------------------------------------------------------------
1.229 +// CompileTask::free
1.230 +void CompileTask::free() {
1.231 + set_code(NULL);
1.232 + assert(!_lock->is_locked(), "Should not be locked when freed");
1.233 + if (_hot_method != NULL && _hot_method != _method) {
1.234 + JNIHandles::destroy_global(_hot_method);
1.235 + }
1.236 + JNIHandles::destroy_global(_method);
1.237 +}
1.238 +
1.239 +
1.240 +// ------------------------------------------------------------------
1.241 +// CompileTask::print
1.242 +void CompileTask::print() {
1.243 + tty->print("<CompileTask compile_id=%d ", _compile_id);
1.244 + tty->print("method=");
1.245 + ((methodOop)JNIHandles::resolve(_method))->print_name(tty);
1.246 + tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
1.247 + _osr_bci, bool_to_str(_is_blocking),
1.248 + bool_to_str(_is_complete), bool_to_str(_is_success));
1.249 +}
1.250 +
1.251 +// ------------------------------------------------------------------
1.252 +// CompileTask::print_line_on_error
1.253 +//
1.254 +// This function is called by fatal error handler when the thread
1.255 +// causing troubles is a compiler thread.
1.256 +//
1.257 +// Do not grab any lock, do not allocate memory.
1.258 +//
1.259 +// Otherwise it's the same as CompileTask::print_line()
1.260 +//
1.261 +void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
1.262 + methodOop method = (methodOop)JNIHandles::resolve(_method);
1.263 +
1.264 + // print compiler name
1.265 + st->print("%s:", CompileBroker::compiler(comp_level())->name());
1.266 +
1.267 + // print compilation number
1.268 + st->print("%3d", compile_id());
1.269 +
1.270 + // print method attributes
1.271 + const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci;
1.272 + { const char blocking_char = is_blocking() ? 'b' : ' ';
1.273 + const char compile_type = is_osr ? '%' : ' ';
1.274 + const char sync_char = method->is_synchronized() ? 's' : ' ';
1.275 + const char exception_char = method->has_exception_handler() ? '!' : ' ';
1.276 + const char tier_char =
1.277 + is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level());
1.278 + st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char);
1.279 + }
1.280 +
1.281 + // Use buf to get method name and signature
1.282 + if (method != NULL) st->print("%s", method->name_and_sig_as_C_string(buf, buflen));
1.283 +
1.284 + // print osr_bci if any
1.285 + if (is_osr) st->print(" @ %d", osr_bci());
1.286 +
1.287 + // print method size
1.288 + st->print_cr(" (%d bytes)", method->code_size());
1.289 +}
1.290 +
1.291 +// ------------------------------------------------------------------
1.292 +// CompileTask::print_line
1.293 +void CompileTask::print_line() {
1.294 + Thread *thread = Thread::current();
1.295 + methodHandle method(thread,
1.296 + (methodOop)JNIHandles::resolve(method_handle()));
1.297 + ResourceMark rm(thread);
1.298 +
1.299 + ttyLocker ttyl; // keep the following output all in one block
1.300 +
1.301 + // print compiler name if requested
1.302 + if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
1.303 +
1.304 + // print compilation number
1.305 + tty->print("%3d", compile_id());
1.306 +
1.307 + // print method attributes
1.308 + const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci;
1.309 + { const char blocking_char = is_blocking() ? 'b' : ' ';
1.310 + const char compile_type = is_osr ? '%' : ' ';
1.311 + const char sync_char = method->is_synchronized() ? 's' : ' ';
1.312 + const char exception_char = method->has_exception_handler() ? '!' : ' ';
1.313 + const char tier_char =
1.314 + is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level());
1.315 + tty->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char);
1.316 + }
1.317 +
1.318 + // print method name
1.319 + method->print_short_name(tty);
1.320 +
1.321 + // print osr_bci if any
1.322 + if (is_osr) tty->print(" @ %d", osr_bci());
1.323 +
1.324 + // print method size
1.325 + tty->print_cr(" (%d bytes)", method->code_size());
1.326 +}
1.327 +
1.328 +
1.329 +// ------------------------------------------------------------------
1.330 +// CompileTask::log_task
1.331 +void CompileTask::log_task(xmlStream* log) {
1.332 + Thread* thread = Thread::current();
1.333 + methodHandle method(thread,
1.334 + (methodOop)JNIHandles::resolve(method_handle()));
1.335 + ResourceMark rm(thread);
1.336 +
1.337 + // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
1.338 + if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id);
1.339 + if (_osr_bci != CompileBroker::standard_entry_bci) {
1.340 + log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
1.341 + } // else compile_kind='c2c'
1.342 + if (!method.is_null()) log->method(method);
1.343 + if (_osr_bci != CompileBroker::standard_entry_bci) {
1.344 + log->print(" osr_bci='%d'", _osr_bci);
1.345 + }
1.346 + if (_comp_level != CompLevel_highest_tier) {
1.347 + log->print(" level='%d'", _comp_level);
1.348 + }
1.349 + if (_is_blocking) {
1.350 + log->print(" blocking='1'");
1.351 + }
1.352 + log->stamp();
1.353 +}
1.354 +
1.355 +
1.356 +// ------------------------------------------------------------------
1.357 +// CompileTask::log_task_queued
1.358 +void CompileTask::log_task_queued() {
1.359 + Thread* thread = Thread::current();
1.360 + ttyLocker ttyl;
1.361 + ResourceMark rm(thread);
1.362 +
1.363 + xtty->begin_elem("task_queued");
1.364 + log_task(xtty);
1.365 + if (_comment != NULL) {
1.366 + xtty->print(" comment='%s'", _comment);
1.367 + }
1.368 + if (_hot_method != NULL) {
1.369 + methodHandle hot(thread,
1.370 + (methodOop)JNIHandles::resolve(_hot_method));
1.371 + methodHandle method(thread,
1.372 + (methodOop)JNIHandles::resolve(_method));
1.373 + if (hot() != method()) {
1.374 + xtty->method(hot);
1.375 + }
1.376 + }
1.377 + if (_hot_count != 0) {
1.378 + xtty->print(" hot_count='%d'", _hot_count);
1.379 + }
1.380 + xtty->end_elem();
1.381 +}
1.382 +
1.383 +
1.384 +// ------------------------------------------------------------------
1.385 +// CompileTask::log_task_start
1.386 +void CompileTask::log_task_start(CompileLog* log) {
1.387 + log->begin_head("task");
1.388 + log_task(log);
1.389 + log->end_head();
1.390 +}
1.391 +
1.392 +
1.393 +// ------------------------------------------------------------------
1.394 +// CompileTask::log_task_done
1.395 +void CompileTask::log_task_done(CompileLog* log) {
1.396 + Thread* thread = Thread::current();
1.397 + methodHandle method(thread,
1.398 + (methodOop)JNIHandles::resolve(method_handle()));
1.399 + ResourceMark rm(thread);
1.400 +
1.401 + // <task_done ... stamp='1.234'> </task>
1.402 + nmethod* nm = code();
1.403 + log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
1.404 + _is_success, nm == NULL ? 0 : nm->instructions_size(),
1.405 + method->invocation_count());
1.406 + int bec = method->backedge_count();
1.407 + if (bec != 0) log->print(" backedge_count='%d'", bec);
1.408 + // Note: "_is_complete" is about to be set, but is not.
1.409 + if (_num_inlined_bytecodes != 0) {
1.410 + log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
1.411 + }
1.412 + log->stamp();
1.413 + log->end_elem();
1.414 + log->tail("task");
1.415 + log->clear_identities(); // next task will have different CI
1.416 + if (log->unflushed_count() > 2000) {
1.417 + log->flush();
1.418 + }
1.419 + log->mark_file_end();
1.420 +}
1.421 +
1.422 +
1.423 +
1.424 +// ------------------------------------------------------------------
1.425 +// CompileQueue::add
1.426 +//
1.427 +// Add a CompileTask to a CompileQueue
1.428 +void CompileQueue::add(CompileTask* task) {
1.429 + assert(lock()->owned_by_self(), "must own lock");
1.430 +
1.431 + task->set_next(NULL);
1.432 +
1.433 + if (_last == NULL) {
1.434 + // The compile queue is empty.
1.435 + assert(_first == NULL, "queue is empty");
1.436 + _first = task;
1.437 + _last = task;
1.438 + } else {
1.439 + // Append the task to the queue.
1.440 + assert(_last->next() == NULL, "not last");
1.441 + _last->set_next(task);
1.442 + _last = task;
1.443 + }
1.444 +
1.445 + // Mark the method as being in the compile queue.
1.446 + ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation();
1.447 +
1.448 + if (CIPrintCompileQueue) {
1.449 + print();
1.450 + }
1.451 +
1.452 + if (LogCompilation && xtty != NULL) {
1.453 + task->log_task_queued();
1.454 + }
1.455 +
1.456 + // Notify CompilerThreads that a task is available.
1.457 + lock()->notify();
1.458 +}
1.459 +
1.460 +
1.461 +// ------------------------------------------------------------------
1.462 +// CompileQueue::get
1.463 +//
1.464 +// Get the next CompileTask from a CompileQueue
1.465 +CompileTask* CompileQueue::get() {
1.466 + MutexLocker locker(lock());
1.467 +
1.468 + // Wait for an available CompileTask.
1.469 + while (_first == NULL) {
1.470 + // There is no work to be done right now. Wait.
1.471 + lock()->wait();
1.472 + }
1.473 +
1.474 + CompileTask* task = _first;
1.475 +
1.476 + // Update queue first and last
1.477 + _first =_first->next();
1.478 + if (_first == NULL) {
1.479 + _last = NULL;
1.480 + }
1.481 +
1.482 + return task;
1.483 +
1.484 +}
1.485 +
1.486 +
1.487 +// ------------------------------------------------------------------
1.488 +// CompileQueue::print
1.489 +void CompileQueue::print() {
1.490 + tty->print_cr("Contents of %s", name());
1.491 + tty->print_cr("----------------------");
1.492 + CompileTask* task = _first;
1.493 + while (task != NULL) {
1.494 + task->print_line();
1.495 + task = task->next();
1.496 + }
1.497 + tty->print_cr("----------------------");
1.498 +}
1.499 +
1.500 +CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
1.501 +
1.502 + _current_method[0] = '\0';
1.503 + _compile_type = CompileBroker::no_compile;
1.504 +
1.505 + if (UsePerfData) {
1.506 + ResourceMark rm;
1.507 +
1.508 + // create the thread instance name space string - don't create an
1.509 + // instance subspace if instance is -1 - keeps the adapterThread
1.510 + // counters from having a ".0" namespace.
1.511 + const char* thread_i = (instance == -1) ? thread_name :
1.512 + PerfDataManager::name_space(thread_name, instance);
1.513 +
1.514 +
1.515 + char* name = PerfDataManager::counter_name(thread_i, "method");
1.516 + _perf_current_method =
1.517 + PerfDataManager::create_string_variable(SUN_CI, name,
1.518 + cmname_buffer_length,
1.519 + _current_method, CHECK);
1.520 +
1.521 + name = PerfDataManager::counter_name(thread_i, "type");
1.522 + _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
1.523 + PerfData::U_None,
1.524 + (jlong)_compile_type,
1.525 + CHECK);
1.526 +
1.527 + name = PerfDataManager::counter_name(thread_i, "time");
1.528 + _perf_time = PerfDataManager::create_counter(SUN_CI, name,
1.529 + PerfData::U_Ticks, CHECK);
1.530 +
1.531 + name = PerfDataManager::counter_name(thread_i, "compiles");
1.532 + _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
1.533 + PerfData::U_Events, CHECK);
1.534 + }
1.535 +}
1.536 +
1.537 +
1.538 +// ------------------------------------------------------------------
1.539 +// CompileBroker::compilation_init
1.540 +//
1.541 +// Initialize the Compilation object
1.542 +void CompileBroker::compilation_init() {
1.543 + _last_method_compiled[0] = '\0';
1.544 +
1.545 + // Set the interface to the current compiler(s).
1.546 +#ifdef COMPILER1
1.547 + _compilers[0] = new Compiler();
1.548 +#ifndef COMPILER2
1.549 + _compilers[1] = _compilers[0];
1.550 +#endif
1.551 +#endif // COMPILER1
1.552 +
1.553 +#ifdef COMPILER2
1.554 + _compilers[1] = new C2Compiler();
1.555 +#ifndef COMPILER1
1.556 + _compilers[0] = _compilers[1];
1.557 +#endif
1.558 +#endif // COMPILER2
1.559 +
1.560 + // Initialize the CompileTask free list
1.561 + _task_free_list = NULL;
1.562 +
1.563 + // Start the CompilerThreads
1.564 + init_compiler_threads(compiler_count());
1.565 +
1.566 +
1.567 + // totalTime performance counter is always created as it is required
1.568 + // by the implementation of java.lang.management.CompilationMBean.
1.569 + {
1.570 + EXCEPTION_MARK;
1.571 + _perf_total_compilation =
1.572 + PerfDataManager::create_counter(JAVA_CI, "totalTime",
1.573 + PerfData::U_Ticks, CHECK);
1.574 + }
1.575 +
1.576 +
1.577 + if (UsePerfData) {
1.578 +
1.579 + EXCEPTION_MARK;
1.580 +
1.581 + // create the jvmstat performance counters
1.582 + _perf_osr_compilation =
1.583 + PerfDataManager::create_counter(SUN_CI, "osrTime",
1.584 + PerfData::U_Ticks, CHECK);
1.585 +
1.586 + _perf_standard_compilation =
1.587 + PerfDataManager::create_counter(SUN_CI, "standardTime",
1.588 + PerfData::U_Ticks, CHECK);
1.589 +
1.590 + _perf_total_bailout_count =
1.591 + PerfDataManager::create_counter(SUN_CI, "totalBailouts",
1.592 + PerfData::U_Events, CHECK);
1.593 +
1.594 + _perf_total_invalidated_count =
1.595 + PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
1.596 + PerfData::U_Events, CHECK);
1.597 +
1.598 + _perf_total_compile_count =
1.599 + PerfDataManager::create_counter(SUN_CI, "totalCompiles",
1.600 + PerfData::U_Events, CHECK);
1.601 + _perf_total_osr_compile_count =
1.602 + PerfDataManager::create_counter(SUN_CI, "osrCompiles",
1.603 + PerfData::U_Events, CHECK);
1.604 +
1.605 + _perf_total_standard_compile_count =
1.606 + PerfDataManager::create_counter(SUN_CI, "standardCompiles",
1.607 + PerfData::U_Events, CHECK);
1.608 +
1.609 + _perf_sum_osr_bytes_compiled =
1.610 + PerfDataManager::create_counter(SUN_CI, "osrBytes",
1.611 + PerfData::U_Bytes, CHECK);
1.612 +
1.613 + _perf_sum_standard_bytes_compiled =
1.614 + PerfDataManager::create_counter(SUN_CI, "standardBytes",
1.615 + PerfData::U_Bytes, CHECK);
1.616 +
1.617 + _perf_sum_nmethod_size =
1.618 + PerfDataManager::create_counter(SUN_CI, "nmethodSize",
1.619 + PerfData::U_Bytes, CHECK);
1.620 +
1.621 + _perf_sum_nmethod_code_size =
1.622 + PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
1.623 + PerfData::U_Bytes, CHECK);
1.624 +
1.625 + _perf_last_method =
1.626 + PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
1.627 + CompilerCounters::cmname_buffer_length,
1.628 + "", CHECK);
1.629 +
1.630 + _perf_last_failed_method =
1.631 + PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
1.632 + CompilerCounters::cmname_buffer_length,
1.633 + "", CHECK);
1.634 +
1.635 + _perf_last_invalidated_method =
1.636 + PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
1.637 + CompilerCounters::cmname_buffer_length,
1.638 + "", CHECK);
1.639 +
1.640 + _perf_last_compile_type =
1.641 + PerfDataManager::create_variable(SUN_CI, "lastType",
1.642 + PerfData::U_None,
1.643 + (jlong)CompileBroker::no_compile,
1.644 + CHECK);
1.645 +
1.646 + _perf_last_compile_size =
1.647 + PerfDataManager::create_variable(SUN_CI, "lastSize",
1.648 + PerfData::U_Bytes,
1.649 + (jlong)CompileBroker::no_compile,
1.650 + CHECK);
1.651 +
1.652 +
1.653 + _perf_last_failed_type =
1.654 + PerfDataManager::create_variable(SUN_CI, "lastFailedType",
1.655 + PerfData::U_None,
1.656 + (jlong)CompileBroker::no_compile,
1.657 + CHECK);
1.658 +
1.659 + _perf_last_invalidated_type =
1.660 + PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
1.661 + PerfData::U_None,
1.662 + (jlong)CompileBroker::no_compile,
1.663 + CHECK);
1.664 + }
1.665 +
1.666 + _initialized = true;
1.667 +}
1.668 +
1.669 +
1.670 +
1.671 +// ------------------------------------------------------------------
1.672 +// CompileBroker::make_compiler_thread
1.673 +CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
1.674 + CompilerThread* compiler_thread = NULL;
1.675 +
1.676 + klassOop k =
1.677 + SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(),
1.678 + true, CHECK_0);
1.679 + instanceKlassHandle klass (THREAD, k);
1.680 + instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
1.681 + Handle string = java_lang_String::create_from_str(name, CHECK_0);
1.682 +
1.683 + // Initialize thread_oop to put it into the system threadGroup
1.684 + Handle thread_group (THREAD, Universe::system_thread_group());
1.685 + JavaValue result(T_VOID);
1.686 + JavaCalls::call_special(&result, thread_oop,
1.687 + klass,
1.688 + vmSymbolHandles::object_initializer_name(),
1.689 + vmSymbolHandles::threadgroup_string_void_signature(),
1.690 + thread_group,
1.691 + string,
1.692 + CHECK_0);
1.693 +
1.694 + {
1.695 + MutexLocker mu(Threads_lock, THREAD);
1.696 + compiler_thread = new CompilerThread(queue, counters);
1.697 + // At this point the new CompilerThread data-races with this startup
1.698 + // thread (which I believe is the primoridal thread and NOT the VM
1.699 + // thread). This means Java bytecodes being executed at startup can
1.700 + // queue compile jobs which will run at whatever default priority the
1.701 + // newly created CompilerThread runs at.
1.702 +
1.703 +
1.704 + // At this point it may be possible that no osthread was created for the
1.705 + // JavaThread due to lack of memory. We would have to throw an exception
1.706 + // in that case. However, since this must work and we do not allow
1.707 + // exceptions anyway, check and abort if this fails.
1.708 +
1.709 + if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
1.710 + vm_exit_during_initialization("java.lang.OutOfMemoryError",
1.711 + "unable to create new native thread");
1.712 + }
1.713 +
1.714 + java_lang_Thread::set_thread(thread_oop(), compiler_thread);
1.715 +
1.716 + // Note that this only sets the JavaThread _priority field, which by
1.717 + // definition is limited to Java priorities and not OS priorities.
1.718 + // The os-priority is set in the CompilerThread startup code itself
1.719 + java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
1.720 + // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler
1.721 + // threads never have their OS priority set. The assumption here is to
1.722 + // enable the Performance group to do flag tuning, figure out a suitable
1.723 + // CompilerThreadPriority, and then remove this 'if' statement (and
1.724 + // comment) and unconditionally set the priority.
1.725 +
1.726 + // Compiler Threads should be at the highest Priority
1.727 + if ( CompilerThreadPriority != -1 )
1.728 + os::set_native_priority( compiler_thread, CompilerThreadPriority );
1.729 + else
1.730 + os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]);
1.731 +
1.732 + // Note that I cannot call os::set_priority because it expects Java
1.733 + // priorities and I am *explicitly* using OS priorities so that it's
1.734 + // possible to set the compiler thread priority higher than any Java
1.735 + // thread.
1.736 +
1.737 + java_lang_Thread::set_daemon(thread_oop());
1.738 +
1.739 + compiler_thread->set_threadObj(thread_oop());
1.740 + Threads::add(compiler_thread);
1.741 + Thread::start(compiler_thread);
1.742 + }
1.743 + // Let go of Threads_lock before yielding
1.744 + os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
1.745 +
1.746 + return compiler_thread;
1.747 +}
1.748 +
1.749 +
1.750 +// ------------------------------------------------------------------
1.751 +// CompileBroker::init_compiler_threads
1.752 +//
1.753 +// Initialize the compilation queue
1.754 +void CompileBroker::init_compiler_threads(int compiler_count) {
1.755 + EXCEPTION_MARK;
1.756 +
1.757 + _method_queue = new CompileQueue("MethodQueue", MethodCompileQueue_lock);
1.758 + _method_threads =
1.759 + new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true);
1.760 +
1.761 + char name_buffer[256];
1.762 + int i;
1.763 + for (i = 0; i < compiler_count; i++) {
1.764 + // Create a name for our thread.
1.765 + sprintf(name_buffer, "CompilerThread%d", i);
1.766 + CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
1.767 +
1.768 + CompilerThread* new_thread = make_compiler_thread(name_buffer, _method_queue, counters, CHECK);
1.769 + _method_threads->append(new_thread);
1.770 + }
1.771 + if (UsePerfData) {
1.772 + PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
1.773 + compiler_count, CHECK);
1.774 + }
1.775 +}
1.776 +
1.777 +// ------------------------------------------------------------------
1.778 +// CompileBroker::is_idle
1.779 +bool CompileBroker::is_idle() {
1.780 + if (!_method_queue->is_empty()) {
1.781 + return false;
1.782 + } else {
1.783 + int num_threads = _method_threads->length();
1.784 + for (int i=0; i<num_threads; i++) {
1.785 + if (_method_threads->at(i)->task() != NULL) {
1.786 + return false;
1.787 + }
1.788 + }
1.789 +
1.790 + // No pending or active compilations.
1.791 + return true;
1.792 + }
1.793 +}
1.794 +
1.795 +
1.796 +// ------------------------------------------------------------------
1.797 +// CompileBroker::compile_method
1.798 +//
1.799 +// Request compilation of a method.
1.800 +void CompileBroker::compile_method_base(methodHandle method,
1.801 + int osr_bci,
1.802 + int comp_level,
1.803 + methodHandle hot_method,
1.804 + int hot_count,
1.805 + const char* comment,
1.806 + TRAPS) {
1.807 + // do nothing if compiler thread(s) is not available
1.808 + if (!_initialized ) {
1.809 + return;
1.810 + }
1.811 +
1.812 + guarantee(!method->is_abstract(), "cannot compile abstract methods");
1.813 + assert(method->method_holder()->klass_part()->oop_is_instance(),
1.814 + "sanity check");
1.815 + assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(),
1.816 + "method holder must be initialized");
1.817 +
1.818 + if (CIPrintRequests) {
1.819 + tty->print("request: ");
1.820 + method->print_short_name(tty);
1.821 + if (osr_bci != InvocationEntryBci) {
1.822 + tty->print(" osr_bci: %d", osr_bci);
1.823 + }
1.824 + tty->print(" comment: %s count: %d", comment, hot_count);
1.825 + if (!hot_method.is_null()) {
1.826 + tty->print(" hot: ");
1.827 + if (hot_method() != method()) {
1.828 + hot_method->print_short_name(tty);
1.829 + } else {
1.830 + tty->print("yes");
1.831 + }
1.832 + }
1.833 + tty->cr();
1.834 + }
1.835 +
1.836 + // A request has been made for compilation. Before we do any
1.837 + // real work, check to see if the method has been compiled
1.838 + // in the meantime with a definitive result.
1.839 + if (compilation_is_complete(method, osr_bci, comp_level)) {
1.840 + return;
1.841 + }
1.842 +
1.843 + // If this method is already in the compile queue, then
1.844 + // we do not block the current thread.
1.845 + if (compilation_is_in_queue(method, osr_bci)) {
1.846 + // We may want to decay our counter a bit here to prevent
1.847 + // multiple denied requests for compilation. This is an
1.848 + // open compilation policy issue. Note: The other possibility,
1.849 + // in the case that this is a blocking compile request, is to have
1.850 + // all subsequent blocking requesters wait for completion of
1.851 + // ongoing compiles. Note that in this case we'll need a protocol
1.852 + // for freeing the associated compile tasks. [Or we could have
1.853 + // a single static monitor on which all these waiters sleep.]
1.854 + return;
1.855 + }
1.856 +
1.857 + // Outputs from the following MutexLocker block:
1.858 + CompileTask* task = NULL;
1.859 + bool blocking = false;
1.860 +
1.861 + // Acquire our lock.
1.862 + {
1.863 + MutexLocker locker(_method_queue->lock(), THREAD);
1.864 +
1.865 + // Make sure the method has not slipped into the queues since
1.866 + // last we checked; note that those checks were "fast bail-outs".
1.867 + // Here we need to be more careful, see 14012000 below.
1.868 + if (compilation_is_in_queue(method, osr_bci)) {
1.869 + return;
1.870 + }
1.871 +
1.872 + // We need to check again to see if the compilation has
1.873 + // completed. A previous compilation may have registered
1.874 + // some result.
1.875 + if (compilation_is_complete(method, osr_bci, comp_level)) {
1.876 + return;
1.877 + }
1.878 +
1.879 + // We now know that this compilation is not pending, complete,
1.880 + // or prohibited. Assign a compile_id to this compilation
1.881 + // and check to see if it is in our [Start..Stop) range.
1.882 + uint compile_id = assign_compile_id(method, osr_bci);
1.883 + if (compile_id == 0) {
1.884 + // The compilation falls outside the allowed range.
1.885 + return;
1.886 + }
1.887 +
1.888 + // Should this thread wait for completion of the compile?
1.889 + blocking = is_compile_blocking(method, osr_bci);
1.890 +
1.891 + // We will enter the compilation in the queue.
1.892 + // 14012000: Note that this sets the queued_for_compile bits in
1.893 + // the target method. We can now reason that a method cannot be
1.894 + // queued for compilation more than once, as follows:
1.895 + // Before a thread queues a task for compilation, it first acquires
1.896 + // the compile queue lock, then checks if the method's queued bits
1.897 + // are set or it has already been compiled. Thus there can not be two
1.898 + // instances of a compilation task for the same method on the
1.899 + // compilation queue. Consider now the case where the compilation
1.900 + // thread has already removed a task for that method from the queue
1.901 + // and is in the midst of compiling it. In this case, the
1.902 + // queued_for_compile bits must be set in the method (and these
1.903 + // will be visible to the current thread, since the bits were set
1.904 + // under protection of the compile queue lock, which we hold now.
1.905 + // When the compilation completes, the compiler thread first sets
1.906 + // the compilation result and then clears the queued_for_compile
1.907 + // bits. Neither of these actions are protected by a barrier (or done
1.908 + // under the protection of a lock), so the only guarantee we have
1.909 + // (on machines with TSO (Total Store Order)) is that these values
1.910 + // will update in that order. As a result, the only combinations of
1.911 + // these bits that the current thread will see are, in temporal order:
1.912 + // <RESULT, QUEUE> :
1.913 + // <0, 1> : in compile queue, but not yet compiled
1.914 + // <1, 1> : compiled but queue bit not cleared
1.915 + // <1, 0> : compiled and queue bit cleared
1.916 + // Because we first check the queue bits then check the result bits,
1.917 + // we are assured that we cannot introduce a duplicate task.
1.918 + // Note that if we did the tests in the reverse order (i.e. check
1.919 + // result then check queued bit), we could get the result bit before
1.920 + // the compilation completed, and the queue bit after the compilation
1.921 + // completed, and end up introducing a "duplicate" (redundant) task.
1.922 + // In that case, the compiler thread should first check if a method
1.923 + // has already been compiled before trying to compile it.
1.924 + // NOTE: in the event that there are multiple compiler threads and
1.925 + // there is de-optimization/recompilation, things will get hairy,
1.926 + // and in that case it's best to protect both the testing (here) of
1.927 + // these bits, and their updating (here and elsewhere) under a
1.928 + // common lock.
1.929 + task = create_compile_task(_method_queue,
1.930 + compile_id, method,
1.931 + osr_bci, comp_level,
1.932 + hot_method, hot_count, comment,
1.933 + blocking);
1.934 + }
1.935 +
1.936 + if (blocking) {
1.937 + wait_for_completion(task);
1.938 + }
1.939 +}
1.940 +
1.941 +
1.942 +nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
1.943 + methodHandle hot_method, int hot_count,
1.944 + const char* comment, TRAPS) {
1.945 + // make sure arguments make sense
1.946 + assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
1.947 + assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
1.948 + assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
1.949 + assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized");
1.950 +
1.951 + int comp_level = CompilationPolicy::policy()->compilation_level(method, osr_bci);
1.952 +
1.953 +#ifdef TIERED
1.954 + if (TieredCompilation && StressTieredRuntime) {
1.955 + static int flipper = 0;
1.956 + if (is_even(flipper++)) {
1.957 + comp_level = CompLevel_fast_compile;
1.958 + } else {
1.959 + comp_level = CompLevel_full_optimization;
1.960 + }
1.961 + }
1.962 +#ifdef SPARC
1.963 + // QQQ FIX ME
1.964 + // C2 only returns long results in G1 and c1 doesn't understand so disallow c2
1.965 + // compiles of long results
1.966 + if (TieredCompilation && method()->result_type() == T_LONG) {
1.967 + comp_level = CompLevel_fast_compile;
1.968 + }
1.969 +#endif // SPARC
1.970 +#endif // TIERED
1.971 +
1.972 + // return quickly if possible
1.973 +
1.974 + // lock, make sure that the compilation
1.975 + // isn't prohibited in a straightforward way.
1.976 +
1.977 + if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) {
1.978 + return NULL;
1.979 + }
1.980 +
1.981 + if (osr_bci == InvocationEntryBci) {
1.982 + // standard compilation
1.983 + nmethod* method_code = method->code();
1.984 + if (method_code != NULL
1.985 +#ifdef TIERED
1.986 + && ( method_code->is_compiled_by_c2() || comp_level == CompLevel_fast_compile )
1.987 +#endif // TIERED
1.988 + ) {
1.989 + return method_code;
1.990 + }
1.991 + if (method->is_not_compilable(comp_level)) return NULL;
1.992 + } else {
1.993 + // osr compilation
1.994 +#ifndef TIERED
1.995 + // seems like an assert of dubious value
1.996 + assert(comp_level == CompLevel_full_optimization,
1.997 + "all OSR compiles are assumed to be at a single compilation lavel");
1.998 +#endif // TIERED
1.999 + nmethod* nm = method->lookup_osr_nmethod_for(osr_bci);
1.1000 + if (nm != NULL) return nm;
1.1001 + if (method->is_not_osr_compilable()) return NULL;
1.1002 + }
1.1003 +
1.1004 + assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
1.1005 + // some prerequisites that are compiler specific
1.1006 + if (compiler(comp_level)->is_c2()) {
1.1007 + method->constants()->resolve_string_constants(CHECK_0);
1.1008 + // Resolve all classes seen in the signature of the method
1.1009 + // we are compiling.
1.1010 + methodOopDesc::load_signature_classes(method, CHECK_0);
1.1011 + }
1.1012 +
1.1013 + // If the method is native, do the lookup in the thread requesting
1.1014 + // the compilation. Native lookups can load code, which is not
1.1015 + // permitted during compilation.
1.1016 + //
1.1017 + // Note: A native method implies non-osr compilation which is
1.1018 + // checked with an assertion at the entry of this method.
1.1019 + if (method->is_native()) {
1.1020 + bool in_base_library;
1.1021 + address adr = NativeLookup::lookup(method, in_base_library, THREAD);
1.1022 + if (HAS_PENDING_EXCEPTION) {
1.1023 + // In case of an exception looking up the method, we just forget
1.1024 + // about it. The interpreter will kick-in and throw the exception.
1.1025 + method->set_not_compilable(); // implies is_not_osr_compilable()
1.1026 + CLEAR_PENDING_EXCEPTION;
1.1027 + return NULL;
1.1028 + }
1.1029 + assert(method->has_native_function(), "must have native code by now");
1.1030 + }
1.1031 +
1.1032 + // RedefineClasses() has replaced this method; just return
1.1033 + if (method->is_old()) {
1.1034 + return NULL;
1.1035 + }
1.1036 +
1.1037 + // JVMTI -- post_compile_event requires jmethod_id() that may require
1.1038 + // a lock the compiling thread can not acquire. Prefetch it here.
1.1039 + if (JvmtiExport::should_post_compiled_method_load()) {
1.1040 + method->jmethod_id();
1.1041 + }
1.1042 +
1.1043 + // do the compilation
1.1044 + if (method->is_native()) {
1.1045 + if (!PreferInterpreterNativeStubs) {
1.1046 + (void) AdapterHandlerLibrary::create_native_wrapper(method);
1.1047 + } else {
1.1048 + return NULL;
1.1049 + }
1.1050 + } else {
1.1051 + compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
1.1052 + }
1.1053 +
1.1054 + // return requested nmethod
1.1055 + return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci);
1.1056 +}
1.1057 +
1.1058 +
1.1059 +// ------------------------------------------------------------------
1.1060 +// CompileBroker::compilation_is_complete
1.1061 +//
1.1062 +// See if compilation of this method is already complete.
1.1063 +bool CompileBroker::compilation_is_complete(methodHandle method,
1.1064 + int osr_bci,
1.1065 + int comp_level) {
1.1066 + bool is_osr = (osr_bci != standard_entry_bci);
1.1067 + if (is_osr) {
1.1068 + if (method->is_not_osr_compilable()) {
1.1069 + return true;
1.1070 + } else {
1.1071 + nmethod* result = method->lookup_osr_nmethod_for(osr_bci);
1.1072 + return (result != NULL);
1.1073 + }
1.1074 + } else {
1.1075 + if (method->is_not_compilable(comp_level)) {
1.1076 + return true;
1.1077 + } else {
1.1078 + nmethod* result = method->code();
1.1079 + if (result == NULL) return false;
1.1080 +#ifdef TIERED
1.1081 + if (comp_level == CompLevel_fast_compile) {
1.1082 + // At worst the code is from c1
1.1083 + return true;
1.1084 + }
1.1085 + // comp level must be full opt
1.1086 + return result->is_compiled_by_c2();
1.1087 +#endif // TIERED
1.1088 + return true;
1.1089 + }
1.1090 + }
1.1091 +}
1.1092 +
1.1093 +
1.1094 +// ------------------------------------------------------------------
1.1095 +// CompileBroker::compilation_is_in_queue
1.1096 +//
1.1097 +// See if this compilation is already requested.
1.1098 +//
1.1099 +// Implementation note: there is only a single "is in queue" bit
1.1100 +// for each method. This means that the check below is overly
1.1101 +// conservative in the sense that an osr compilation in the queue
1.1102 +// will block a normal compilation from entering the queue (and vice
1.1103 +// versa). This can be remedied by a full queue search to disambiguate
1.1104 +// cases. If it is deemed profitible, this may be done.
1.1105 +bool CompileBroker::compilation_is_in_queue(methodHandle method,
1.1106 + int osr_bci) {
1.1107 + return method->queued_for_compilation();
1.1108 +}
1.1109 +
1.1110 +
1.1111 +// ------------------------------------------------------------------
1.1112 +// CompileBroker::compilation_is_prohibited
1.1113 +//
1.1114 +// See if this compilation is not allowed.
1.1115 +bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
1.1116 + bool is_native = method->is_native();
1.1117 + // Some compilers may not support the compilation of natives.
1.1118 + // QQQ this needs some work ought to only record not compilable at
1.1119 + // the specified level
1.1120 + if (is_native &&
1.1121 + (!CICompileNatives || !compiler(comp_level)->supports_native())) {
1.1122 + method->set_not_compilable();
1.1123 + return true;
1.1124 + }
1.1125 +
1.1126 + bool is_osr = (osr_bci != standard_entry_bci);
1.1127 + // Some compilers may not support on stack replacement.
1.1128 + if (is_osr &&
1.1129 + (!CICompileOSR || !compiler(comp_level)->supports_osr())) {
1.1130 + method->set_not_osr_compilable();
1.1131 + return true;
1.1132 + }
1.1133 +
1.1134 + // The method may be explicitly excluded by the user.
1.1135 + bool quietly;
1.1136 + if (CompilerOracle::should_exclude(method, quietly)) {
1.1137 + if (!quietly) {
1.1138 + // This does not happen quietly...
1.1139 + ResourceMark rm;
1.1140 + tty->print("### Excluding %s:%s",
1.1141 + method->is_native() ? "generation of native wrapper" : "compile",
1.1142 + (method->is_static() ? " static" : ""));
1.1143 + method->print_short_name(tty);
1.1144 + tty->cr();
1.1145 + }
1.1146 + method->set_not_compilable();
1.1147 + }
1.1148 +
1.1149 + return false;
1.1150 +}
1.1151 +
1.1152 +
1.1153 +// ------------------------------------------------------------------
1.1154 +// CompileBroker::assign_compile_id
1.1155 +//
1.1156 +// Assign a serialized id number to this compilation request. If the
1.1157 +// number falls out of the allowed range, return a 0. OSR
1.1158 +// compilations may be numbered separately from regular compilations
1.1159 +// if certain debugging flags are used.
1.1160 +uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
1.1161 + assert(_method_queue->lock()->owner() == JavaThread::current(),
1.1162 + "must hold the compilation queue lock");
1.1163 + bool is_osr = (osr_bci != standard_entry_bci);
1.1164 + assert(!method->is_native(), "no longer compile natives");
1.1165 + uint id;
1.1166 + if (CICountOSR && is_osr) {
1.1167 + id = ++_osr_compilation_id;
1.1168 + if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
1.1169 + return id;
1.1170 + }
1.1171 + } else {
1.1172 + id = ++_compilation_id;
1.1173 + if ((uint)CIStart <= id && id < (uint)CIStop) {
1.1174 + return id;
1.1175 + }
1.1176 + }
1.1177 +
1.1178 + // Method was not in the appropriate compilation range.
1.1179 + method->set_not_compilable();
1.1180 + return 0;
1.1181 +}
1.1182 +
1.1183 +
1.1184 +// ------------------------------------------------------------------
1.1185 +// CompileBroker::is_compile_blocking
1.1186 +//
1.1187 +// Should the current thread be blocked until this compilation request
1.1188 +// has been fulfilled?
1.1189 +bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
1.1190 + return !BackgroundCompilation;
1.1191 +}
1.1192 +
1.1193 +
1.1194 +// ------------------------------------------------------------------
1.1195 +// CompileBroker::preload_classes
1.1196 +void CompileBroker::preload_classes(methodHandle method, TRAPS) {
1.1197 + // Move this code over from c1_Compiler.cpp
1.1198 + ShouldNotReachHere();
1.1199 +}
1.1200 +
1.1201 +
1.1202 +// ------------------------------------------------------------------
1.1203 +// CompileBroker::create_compile_task
1.1204 +//
1.1205 +// Create a CompileTask object representing the current request for
1.1206 +// compilation. Add this task to the queue.
1.1207 +CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1.1208 + int compile_id,
1.1209 + methodHandle method,
1.1210 + int osr_bci,
1.1211 + int comp_level,
1.1212 + methodHandle hot_method,
1.1213 + int hot_count,
1.1214 + const char* comment,
1.1215 + bool blocking) {
1.1216 + CompileTask* new_task = allocate_task();
1.1217 + new_task->initialize(compile_id, method, osr_bci, comp_level,
1.1218 + hot_method, hot_count, comment,
1.1219 + blocking);
1.1220 + queue->add(new_task);
1.1221 + return new_task;
1.1222 +}
1.1223 +
1.1224 +
1.1225 +// ------------------------------------------------------------------
1.1226 +// CompileBroker::allocate_task
1.1227 +//
1.1228 +// Allocate a CompileTask, from the free list if possible.
1.1229 +CompileTask* CompileBroker::allocate_task() {
1.1230 + MutexLocker locker(CompileTaskAlloc_lock);
1.1231 + CompileTask* task = NULL;
1.1232 + if (_task_free_list != NULL) {
1.1233 + task = _task_free_list;
1.1234 + _task_free_list = task->next();
1.1235 + task->set_next(NULL);
1.1236 + } else {
1.1237 + task = new CompileTask();
1.1238 + task->set_next(NULL);
1.1239 + }
1.1240 + return task;
1.1241 +}
1.1242 +
1.1243 +
1.1244 +// ------------------------------------------------------------------
1.1245 +// CompileBroker::free_task
1.1246 +//
1.1247 +// Add a task to the free list.
1.1248 +void CompileBroker::free_task(CompileTask* task) {
1.1249 + MutexLocker locker(CompileTaskAlloc_lock);
1.1250 + task->free();
1.1251 + task->set_next(_task_free_list);
1.1252 + _task_free_list = task;
1.1253 +}
1.1254 +
1.1255 +
1.1256 +// ------------------------------------------------------------------
1.1257 +// CompileBroker::wait_for_completion
1.1258 +//
1.1259 +// Wait for the given method CompileTask to complete.
1.1260 +void CompileBroker::wait_for_completion(CompileTask* task) {
1.1261 + if (CIPrintCompileQueue) {
1.1262 + tty->print_cr("BLOCKING FOR COMPILE");
1.1263 + }
1.1264 +
1.1265 + assert(task->is_blocking(), "can only wait on blocking task");
1.1266 +
1.1267 + JavaThread *thread = JavaThread::current();
1.1268 + thread->set_blocked_on_compilation(true);
1.1269 +
1.1270 + methodHandle method(thread,
1.1271 + (methodOop)JNIHandles::resolve(task->method_handle()));
1.1272 + {
1.1273 + MutexLocker waiter(task->lock(), thread);
1.1274 +
1.1275 + while (!task->is_complete())
1.1276 + task->lock()->wait();
1.1277 + }
1.1278 + // It is harmless to check this status without the lock, because
1.1279 + // completion is a stable property (until the task object is recycled).
1.1280 + assert(task->is_complete(), "Compilation should have completed");
1.1281 + assert(task->code_handle() == NULL, "must be reset");
1.1282 +
1.1283 + thread->set_blocked_on_compilation(false);
1.1284 +
1.1285 + // By convention, the waiter is responsible for recycling a
1.1286 + // blocking CompileTask. Since there is only one waiter ever
1.1287 + // waiting on a CompileTask, we know that no one else will
1.1288 + // be using this CompileTask; we can free it.
1.1289 + free_task(task);
1.1290 +}
1.1291 +
1.1292 +// ------------------------------------------------------------------
1.1293 +// CompileBroker::compiler_thread_loop
1.1294 +//
1.1295 +// The main loop run by a CompilerThread.
1.1296 +void CompileBroker::compiler_thread_loop() {
1.1297 + CompilerThread* thread = CompilerThread::current();
1.1298 + CompileQueue* queue = thread->queue();
1.1299 +
1.1300 + // For the thread that initializes the ciObjectFactory
1.1301 + // this resource mark holds all the shared objects
1.1302 + ResourceMark rm;
1.1303 +
1.1304 + // First thread to get here will initialize the compiler interface
1.1305 +
1.1306 + if (!ciObjectFactory::is_initialized()) {
1.1307 + ASSERT_IN_VM;
1.1308 + MutexLocker only_one (CompileThread_lock, thread);
1.1309 + if (!ciObjectFactory::is_initialized()) {
1.1310 + ciObjectFactory::initialize();
1.1311 + }
1.1312 + }
1.1313 +
1.1314 + // Open a log.
1.1315 + if (LogCompilation) {
1.1316 + init_compiler_thread_log();
1.1317 + }
1.1318 + CompileLog* log = thread->log();
1.1319 + if (log != NULL) {
1.1320 + log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
1.1321 + os::current_thread_id(),
1.1322 + os::current_process_id());
1.1323 + log->stamp();
1.1324 + log->end_elem();
1.1325 + }
1.1326 +
1.1327 + while (true) {
1.1328 + {
1.1329 + // We need this HandleMark to avoid leaking VM handles.
1.1330 + HandleMark hm(thread);
1.1331 + if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) {
1.1332 + // The CodeCache is full. Print out warning and disable compilation.
1.1333 + UseInterpreter = true;
1.1334 + if (UseCompiler || AlwaysCompileLoopMethods ) {
1.1335 + if (log != NULL) {
1.1336 + log->begin_elem("code_cache_full");
1.1337 + log->stamp();
1.1338 + log->end_elem();
1.1339 + }
1.1340 +#ifndef PRODUCT
1.1341 + warning("CodeCache is full. Compiler has been disabled");
1.1342 + if (CompileTheWorld || ExitOnFullCodeCache) {
1.1343 + before_exit(thread);
1.1344 + exit_globals(); // will delete tty
1.1345 + vm_direct_exit(CompileTheWorld ? 0 : 1);
1.1346 + }
1.1347 +#endif
1.1348 + UseCompiler = false;
1.1349 + AlwaysCompileLoopMethods = false;
1.1350 + }
1.1351 + }
1.1352 +
1.1353 + CompileTask* task = queue->get();
1.1354 +
1.1355 + // Give compiler threads an extra quanta. They tend to be bursty and
1.1356 + // this helps the compiler to finish up the job.
1.1357 + if( CompilerThreadHintNoPreempt )
1.1358 + os::hint_no_preempt();
1.1359 +
1.1360 + // trace per thread time and compile statistics
1.1361 + CompilerCounters* counters = ((CompilerThread*)thread)->counters();
1.1362 + PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
1.1363 +
1.1364 + // Assign the task to the current thread. Mark this compilation
1.1365 + // thread as active for the profiler.
1.1366 + CompileTaskWrapper ctw(task);
1.1367 + nmethodLocker result_handle; // (handle for the nmethod produced by this task)
1.1368 + task->set_code_handle(&result_handle);
1.1369 + methodHandle method(thread,
1.1370 + (methodOop)JNIHandles::resolve(task->method_handle()));
1.1371 +
1.1372 + // Never compile a method if breakpoints are present in it
1.1373 + if (method()->number_of_breakpoints() == 0) {
1.1374 + // Compile the method.
1.1375 + if (UseCompiler || AlwaysCompileLoopMethods) {
1.1376 +#ifdef COMPILER1
1.1377 + // Allow repeating compilations for the purpose of benchmarking
1.1378 + // compile speed. This is not useful for customers.
1.1379 + if (CompilationRepeat != 0) {
1.1380 + int compile_count = CompilationRepeat;
1.1381 + while (compile_count > 0) {
1.1382 + invoke_compiler_on_method(task);
1.1383 + nmethod* nm = method->code();
1.1384 + if (nm != NULL) {
1.1385 + nm->make_zombie();
1.1386 + method->clear_code();
1.1387 + }
1.1388 + compile_count--;
1.1389 + }
1.1390 + }
1.1391 +#endif /* COMPILER1 */
1.1392 + invoke_compiler_on_method(task);
1.1393 + } else {
1.1394 + // After compilation is disabled, remove remaining methods from queue
1.1395 + method->clear_queued_for_compilation();
1.1396 + }
1.1397 + }
1.1398 + }
1.1399 + }
1.1400 +}
1.1401 +
1.1402 +
1.1403 +// ------------------------------------------------------------------
1.1404 +// CompileBroker::init_compiler_thread_log
1.1405 +//
1.1406 +// Set up state required by +LogCompilation.
1.1407 +void CompileBroker::init_compiler_thread_log() {
1.1408 + CompilerThread* thread = CompilerThread::current();
1.1409 + char fileBuf[4*K];
1.1410 + FILE* fp = NULL;
1.1411 + char* file = NULL;
1.1412 + intx thread_id = os::current_thread_id();
1.1413 + for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
1.1414 + const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
1.1415 + if (dir == NULL) dir = "";
1.1416 + sprintf(fileBuf, "%shs_c" UINTX_FORMAT "_pid%u.log",
1.1417 + dir, thread_id, os::current_process_id());
1.1418 + fp = fopen(fileBuf, "at");
1.1419 + if (fp != NULL) {
1.1420 + file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1);
1.1421 + strcpy(file, fileBuf);
1.1422 + break;
1.1423 + }
1.1424 + }
1.1425 + if (fp == NULL) {
1.1426 + warning("Cannot open log file: %s", fileBuf);
1.1427 + } else {
1.1428 + if (LogCompilation && Verbose)
1.1429 + tty->print_cr("Opening compilation log %s", file);
1.1430 + CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id);
1.1431 + thread->init_log(log);
1.1432 +
1.1433 + if (xtty != NULL) {
1.1434 + ttyLocker ttyl;
1.1435 +
1.1436 + // Record any per thread log files
1.1437 + xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
1.1438 + }
1.1439 + }
1.1440 +}
1.1441 +
1.1442 +// ------------------------------------------------------------------
1.1443 +// CompileBroker::set_should_block
1.1444 +//
1.1445 +// Set _should_block.
1.1446 +// Call this from the VM, with Threads_lock held and a safepoint requested.
1.1447 +void CompileBroker::set_should_block() {
1.1448 + assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
1.1449 + assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
1.1450 +#ifndef PRODUCT
1.1451 + if (PrintCompilation && (Verbose || WizardMode))
1.1452 + tty->print_cr("notifying compiler thread pool to block");
1.1453 +#endif
1.1454 + _should_block = true;
1.1455 +}
1.1456 +
1.1457 +// ------------------------------------------------------------------
1.1458 +// CompileBroker::maybe_block
1.1459 +//
1.1460 +// Call this from the compiler at convenient points, to poll for _should_block.
1.1461 +void CompileBroker::maybe_block() {
1.1462 + if (_should_block) {
1.1463 +#ifndef PRODUCT
1.1464 + if (PrintCompilation && (Verbose || WizardMode))
1.1465 + tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
1.1466 +#endif
1.1467 + ThreadInVMfromNative tivfn(JavaThread::current());
1.1468 + }
1.1469 +}
1.1470 +
1.1471 +
1.1472 +// ------------------------------------------------------------------
1.1473 +// CompileBroker::invoke_compiler_on_method
1.1474 +//
1.1475 +// Compile a method.
1.1476 +//
1.1477 +void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
1.1478 + if (PrintCompilation) {
1.1479 + ResourceMark rm;
1.1480 + task->print_line();
1.1481 + }
1.1482 + elapsedTimer time;
1.1483 +
1.1484 + CompilerThread* thread = CompilerThread::current();
1.1485 + ResourceMark rm(thread);
1.1486 +
1.1487 + // Common flags.
1.1488 + uint compile_id = task->compile_id();
1.1489 + int osr_bci = task->osr_bci();
1.1490 + bool is_osr = (osr_bci != standard_entry_bci);
1.1491 + bool should_log = (thread->log() != NULL);
1.1492 + bool should_break = false;
1.1493 + {
1.1494 + // create the handle inside it's own block so it can't
1.1495 + // accidentally be referenced once the thread transitions to
1.1496 + // native. The NoHandleMark before the transition should catch
1.1497 + // any cases where this occurs in the future.
1.1498 + methodHandle method(thread,
1.1499 + (methodOop)JNIHandles::resolve(task->method_handle()));
1.1500 + should_break = check_break_at(method, compile_id, is_osr);
1.1501 + if (should_log && !CompilerOracle::should_log(method)) {
1.1502 + should_log = false;
1.1503 + }
1.1504 + assert(!method->is_native(), "no longer compile natives");
1.1505 +
1.1506 + // Save information about this method in case of failure.
1.1507 + set_last_compile(thread, method, is_osr, task->comp_level());
1.1508 +
1.1509 + DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
1.1510 + }
1.1511 +
1.1512 + // Allocate a new set of JNI handles.
1.1513 + push_jni_handle_block();
1.1514 + jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle()));
1.1515 + int compilable = ciEnv::MethodCompilable;
1.1516 + {
1.1517 + int system_dictionary_modification_counter;
1.1518 + {
1.1519 + MutexLocker locker(Compile_lock, thread);
1.1520 + system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1.1521 + }
1.1522 +
1.1523 + NoHandleMark nhm;
1.1524 + ThreadToNativeFromVM ttn(thread);
1.1525 +
1.1526 + ciEnv ci_env(task, system_dictionary_modification_counter);
1.1527 + if (should_break) {
1.1528 + ci_env.set_break_at_compile(true);
1.1529 + }
1.1530 + if (should_log) {
1.1531 + ci_env.set_log(thread->log());
1.1532 + }
1.1533 + assert(thread->env() == &ci_env, "set by ci_env");
1.1534 + // The thread-env() field is cleared in ~CompileTaskWrapper.
1.1535 +
1.1536 + ciMethod* target = ci_env.get_method_from_handle(target_handle);
1.1537 +
1.1538 + TraceTime t1("compilation", &time);
1.1539 +
1.1540 + compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
1.1541 +
1.1542 + if (!ci_env.failing() && task->code() == NULL) {
1.1543 + //assert(false, "compiler should always document failure");
1.1544 + // The compiler elected, without comment, not to register a result.
1.1545 + // Do not attempt further compilations of this method.
1.1546 + ci_env.record_method_not_compilable("compile failed");
1.1547 + }
1.1548 +
1.1549 + if (ci_env.failing()) {
1.1550 + // Copy this bit to the enclosing block:
1.1551 + compilable = ci_env.compilable();
1.1552 + if (PrintCompilation) {
1.1553 + const char* reason = ci_env.failure_reason();
1.1554 + if (compilable == ciEnv::MethodCompilable_not_at_tier) {
1.1555 + if (is_highest_tier_compile(ci_env.comp_level())) {
1.1556 + // Already at highest tier, promote to not compilable.
1.1557 + compilable = ciEnv::MethodCompilable_never;
1.1558 + } else {
1.1559 + tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason);
1.1560 + }
1.1561 + }
1.1562 +
1.1563 + if (compilable == ciEnv::MethodCompilable_never) {
1.1564 + tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason);
1.1565 + } else if (compilable == ciEnv::MethodCompilable) {
1.1566 + tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason);
1.1567 + }
1.1568 + }
1.1569 + } else {
1.1570 + task->mark_success();
1.1571 + task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
1.1572 + }
1.1573 + }
1.1574 + pop_jni_handle_block();
1.1575 +
1.1576 + methodHandle method(thread,
1.1577 + (methodOop)JNIHandles::resolve(task->method_handle()));
1.1578 +
1.1579 + DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
1.1580 +
1.1581 + collect_statistics(thread, time, task);
1.1582 +
1.1583 + if (compilable == ciEnv::MethodCompilable_never) {
1.1584 + if (is_osr) {
1.1585 + method->set_not_osr_compilable();
1.1586 + } else {
1.1587 + method->set_not_compilable();
1.1588 + }
1.1589 + } else if (compilable == ciEnv::MethodCompilable_not_at_tier) {
1.1590 + method->set_not_compilable(task->comp_level());
1.1591 + }
1.1592 +
1.1593 + // Note that the queued_for_compilation bits are cleared without
1.1594 + // protection of a mutex. [They were set by the requester thread,
1.1595 + // when adding the task to the complie queue -- at which time the
1.1596 + // compile queue lock was held. Subsequently, we acquired the compile
1.1597 + // queue lock to get this task off the compile queue; thus (to belabour
1.1598 + // the point somewhat) our clearing of the bits must be occurring
1.1599 + // only after the setting of the bits. See also 14012000 above.
1.1600 + method->clear_queued_for_compilation();
1.1601 +
1.1602 +#ifdef ASSERT
1.1603 + if (CollectedHeap::fired_fake_oom()) {
1.1604 + // The current compile received a fake OOM during compilation so
1.1605 + // go ahead and exit the VM since the test apparently succeeded
1.1606 + tty->print_cr("*** Shutting down VM after successful fake OOM");
1.1607 + vm_exit(0);
1.1608 + }
1.1609 +#endif
1.1610 +}
1.1611 +
1.1612 +
1.1613 +// ------------------------------------------------------------------
1.1614 +// CompileBroker::set_last_compile
1.1615 +//
1.1616 +// Record this compilation for debugging purposes.
1.1617 +void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
1.1618 + ResourceMark rm;
1.1619 + char* method_name = method->name()->as_C_string();
1.1620 + strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
1.1621 + char current_method[CompilerCounters::cmname_buffer_length];
1.1622 + size_t maxLen = CompilerCounters::cmname_buffer_length;
1.1623 +
1.1624 + if (UsePerfData) {
1.1625 + const char* class_name = method->method_holder()->klass_part()->name()->as_C_string();
1.1626 +
1.1627 + size_t s1len = strlen(class_name);
1.1628 + size_t s2len = strlen(method_name);
1.1629 +
1.1630 + // check if we need to truncate the string
1.1631 + if (s1len + s2len + 2 > maxLen) {
1.1632 +
1.1633 + // the strategy is to lop off the leading characters of the
1.1634 + // class name and the trailing characters of the method name.
1.1635 +
1.1636 + if (s2len + 2 > maxLen) {
1.1637 + // lop of the entire class name string, let snprintf handle
1.1638 + // truncation of the method name.
1.1639 + class_name += s1len; // null string
1.1640 + }
1.1641 + else {
1.1642 + // lop off the extra characters from the front of the class name
1.1643 + class_name += ((s1len + s2len + 2) - maxLen);
1.1644 + }
1.1645 + }
1.1646 +
1.1647 + jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
1.1648 + }
1.1649 +
1.1650 + if (CICountOSR && is_osr) {
1.1651 + _last_compile_type = osr_compile;
1.1652 + } else {
1.1653 + _last_compile_type = normal_compile;
1.1654 + }
1.1655 + _last_compile_level = comp_level;
1.1656 +
1.1657 + if (UsePerfData) {
1.1658 + CompilerCounters* counters = thread->counters();
1.1659 + counters->set_current_method(current_method);
1.1660 + counters->set_compile_type((jlong)_last_compile_type);
1.1661 + }
1.1662 +}
1.1663 +
1.1664 +
1.1665 +// ------------------------------------------------------------------
1.1666 +// CompileBroker::push_jni_handle_block
1.1667 +//
1.1668 +// Push on a new block of JNI handles.
1.1669 +void CompileBroker::push_jni_handle_block() {
1.1670 + JavaThread* thread = JavaThread::current();
1.1671 +
1.1672 + // Allocate a new block for JNI handles.
1.1673 + // Inlined code from jni_PushLocalFrame()
1.1674 + JNIHandleBlock* java_handles = thread->active_handles();
1.1675 + JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
1.1676 + assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
1.1677 + compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
1.1678 + thread->set_active_handles(compile_handles);
1.1679 +}
1.1680 +
1.1681 +
1.1682 +// ------------------------------------------------------------------
1.1683 +// CompileBroker::pop_jni_handle_block
1.1684 +//
1.1685 +// Pop off the current block of JNI handles.
1.1686 +void CompileBroker::pop_jni_handle_block() {
1.1687 + JavaThread* thread = JavaThread::current();
1.1688 +
1.1689 + // Release our JNI handle block
1.1690 + JNIHandleBlock* compile_handles = thread->active_handles();
1.1691 + JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
1.1692 + thread->set_active_handles(java_handles);
1.1693 + compile_handles->set_pop_frame_link(NULL);
1.1694 + JNIHandleBlock::release_block(compile_handles, thread); // may block
1.1695 +}
1.1696 +
1.1697 +
1.1698 +// ------------------------------------------------------------------
1.1699 +// CompileBroker::check_break_at
1.1700 +//
1.1701 +// Should the compilation break at the current compilation.
1.1702 +bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
1.1703 + if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
1.1704 + return true;
1.1705 + } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
1.1706 + return true;
1.1707 + } else {
1.1708 + return (compile_id == CIBreakAt);
1.1709 + }
1.1710 +}
1.1711 +
1.1712 +// ------------------------------------------------------------------
1.1713 +// CompileBroker::collect_statistics
1.1714 +//
1.1715 +// Collect statistics about the compilation.
1.1716 +
1.1717 +void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
1.1718 + bool success = task->is_success();
1.1719 + methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle()));
1.1720 + uint compile_id = task->compile_id();
1.1721 + bool is_osr = (task->osr_bci() != standard_entry_bci);
1.1722 + nmethod* code = task->code();
1.1723 + CompilerCounters* counters = thread->counters();
1.1724 +
1.1725 + assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
1.1726 + MutexLocker locker(CompileStatistics_lock);
1.1727 +
1.1728 + // _perf variables are production performance counters which are
1.1729 + // updated regardless of the setting of the CITime and CITimeEach flags
1.1730 + //
1.1731 + if (!success) {
1.1732 + _total_bailout_count++;
1.1733 + if (UsePerfData) {
1.1734 + _perf_last_failed_method->set_value(counters->current_method());
1.1735 + _perf_last_failed_type->set_value(counters->compile_type());
1.1736 + _perf_total_bailout_count->inc();
1.1737 + }
1.1738 + } else if (code == NULL) {
1.1739 + if (UsePerfData) {
1.1740 + _perf_last_invalidated_method->set_value(counters->current_method());
1.1741 + _perf_last_invalidated_type->set_value(counters->compile_type());
1.1742 + _perf_total_invalidated_count->inc();
1.1743 + }
1.1744 + _total_invalidated_count++;
1.1745 + } else {
1.1746 + // Compilation succeeded
1.1747 +
1.1748 + // update compilation ticks - used by the implementation of
1.1749 + // java.lang.management.CompilationMBean
1.1750 + _perf_total_compilation->inc(time.ticks());
1.1751 +
1.1752 + if (CITime) {
1.1753 + _t_total_compilation.add(time);
1.1754 + if (is_osr) {
1.1755 + _t_osr_compilation.add(time);
1.1756 + _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1.1757 + } else {
1.1758 + _t_standard_compilation.add(time);
1.1759 + _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1.1760 + }
1.1761 + }
1.1762 +
1.1763 + if (UsePerfData) {
1.1764 + // save the name of the last method compiled
1.1765 + _perf_last_method->set_value(counters->current_method());
1.1766 + _perf_last_compile_type->set_value(counters->compile_type());
1.1767 + _perf_last_compile_size->set_value(method->code_size() +
1.1768 + task->num_inlined_bytecodes());
1.1769 + if (is_osr) {
1.1770 + _perf_osr_compilation->inc(time.ticks());
1.1771 + _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1.1772 + } else {
1.1773 + _perf_standard_compilation->inc(time.ticks());
1.1774 + _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1.1775 + }
1.1776 + }
1.1777 +
1.1778 + if (CITimeEach) {
1.1779 + float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
1.1780 + tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
1.1781 + compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
1.1782 + }
1.1783 +
1.1784 + // Collect counts of successful compilations
1.1785 + _sum_nmethod_size += code->total_size();
1.1786 + _sum_nmethod_code_size += code->code_size();
1.1787 + _total_compile_count++;
1.1788 +
1.1789 + if (UsePerfData) {
1.1790 + _perf_sum_nmethod_size->inc(code->total_size());
1.1791 + _perf_sum_nmethod_code_size->inc(code->code_size());
1.1792 + _perf_total_compile_count->inc();
1.1793 + }
1.1794 +
1.1795 + if (is_osr) {
1.1796 + if (UsePerfData) _perf_total_osr_compile_count->inc();
1.1797 + _total_osr_compile_count++;
1.1798 + } else {
1.1799 + if (UsePerfData) _perf_total_standard_compile_count->inc();
1.1800 + _total_standard_compile_count++;
1.1801 + }
1.1802 + }
1.1803 + // set the current method for the thread to null
1.1804 + if (UsePerfData) counters->set_current_method("");
1.1805 +}
1.1806 +
1.1807 +
1.1808 +
1.1809 +void CompileBroker::print_times() {
1.1810 + tty->cr();
1.1811 + tty->print_cr("Accumulated compiler times (for compiled methods only)");
1.1812 + tty->print_cr("------------------------------------------------");
1.1813 + //0000000000111111111122222222223333333333444444444455555555556666666666
1.1814 + //0123456789012345678901234567890123456789012345678901234567890123456789
1.1815 + tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
1.1816 + tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
1.1817 + CompileBroker::_t_standard_compilation.seconds(),
1.1818 + CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
1.1819 + 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);
1.1820 + compiler(CompLevel_fast_compile)->print_timers();
1.1821 + if (compiler(CompLevel_fast_compile) != compiler(CompLevel_highest_tier)) {
1.1822 + compiler(CompLevel_highest_tier)->print_timers();
1.1823 + }
1.1824 +
1.1825 + tty->cr();
1.1826 + int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
1.1827 + tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
1.1828 + tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
1.1829 + tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
1.1830 + int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
1.1831 + tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
1.1832 + tty->cr();
1.1833 + tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
1.1834 + tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
1.1835 +}
1.1836 +
1.1837 +
1.1838 +// Debugging output for failure
1.1839 +void CompileBroker::print_last_compile() {
1.1840 + if ( _last_compile_level != CompLevel_none &&
1.1841 + compiler(_last_compile_level) != NULL &&
1.1842 + _last_method_compiled != NULL &&
1.1843 + _last_compile_type != no_compile) {
1.1844 + if (_last_compile_type == osr_compile) {
1.1845 + tty->print_cr("Last parse: [osr]%d+++(%d) %s",
1.1846 + _osr_compilation_id, _last_compile_level, _last_method_compiled);
1.1847 + } else {
1.1848 + tty->print_cr("Last parse: %d+++(%d) %s",
1.1849 + _compilation_id, _last_compile_level, _last_method_compiled);
1.1850 + }
1.1851 + }
1.1852 +}
1.1853 +
1.1854 +
1.1855 +void CompileBroker::print_compiler_threads_on(outputStream* st) {
1.1856 +#ifndef PRODUCT
1.1857 + st->print_cr("Compiler thread printing unimplemented.");
1.1858 + st->cr();
1.1859 +#endif
1.1860 +}
