jdk8-mips64-public/hotspot: comparison src/share/vm/compiler/compileBroker.cpp

--1:000000000000
+:f90c822e73f8
+/*
+* Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*
+*/
+#include "precompiled.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "code/codeCache.hpp"
+#include "compiler/compileBroker.hpp"
+#include "compiler/compileLog.hpp"
+#include "compiler/compilerOracle.hpp"
+#include "interpreter/linkResolver.hpp"
+#include "memory/allocation.inline.hpp"
+#include "oops/methodData.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/nativeLookup.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/compilationPolicy.hpp"
+#include "runtime/init.hpp"
+#include "runtime/interfaceSupport.hpp"
+#include "runtime/javaCalls.hpp"
+#include "runtime/os.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/sweeper.hpp"
+#include "trace/tracing.hpp"
+#include "utilities/dtrace.hpp"
+#include "utilities/events.hpp"
+#ifdef COMPILER1
+#include "c1/c1_Compiler.hpp"
+#endif
+#ifdef COMPILER2
+#include "opto/c2compiler.hpp"
+#endif
+#ifdef SHARK
+#include "shark/sharkCompiler.hpp"
+#endif
+#ifdef DTRACE_ENABLED
+// Only bother with this argument setup if dtrace is available
+#ifndef USDT2
+HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
+char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
+HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
+char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name)             \
+{                                                                      \
+Symbol* klass_name = (method)->klass_name();                         \
+Symbol* name = (method)->name();                                     \
+Symbol* signature = (method)->signature();                           \
+HS_DTRACE_PROBE8(hotspot, method__compile__begin,                    \
+comp_name, strlen(comp_name),                                      \
+klass_name->bytes(), klass_name->utf8_length(),                    \
+name->bytes(), name->utf8_length(),                                \
+signature->bytes(), signature->utf8_length());                     \
+}
+#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success)      \
+{                                                                      \
+Symbol* klass_name = (method)->klass_name();                         \
+Symbol* name = (method)->name();                                     \
+Symbol* signature = (method)->signature();                           \
+HS_DTRACE_PROBE9(hotspot, method__compile__end,                      \
+comp_name, strlen(comp_name),                                      \
+klass_name->bytes(), klass_name->utf8_length(),                    \
+name->bytes(), name->utf8_length(),                                \
+signature->bytes(), signature->utf8_length(), (success));          \
+}
+#else /* USDT2 */
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name)             \
+{                                                                      \
+Symbol* klass_name = (method)->klass_name();                         \
+Symbol* name = (method)->name();                                     \
+Symbol* signature = (method)->signature();                           \
+HOTSPOT_METHOD_COMPILE_BEGIN(                                        \
+comp_name, strlen(comp_name),                                      \
+(char *) klass_name->bytes(), klass_name->utf8_length(),           \
+(char *) name->bytes(), name->utf8_length(),                       \
+(char *) signature->bytes(), signature->utf8_length());            \
+}
+#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success)      \
+{                                                                      \
+Symbol* klass_name = (method)->klass_name();                         \
+Symbol* name = (method)->name();                                     \
+Symbol* signature = (method)->signature();                           \
+HOTSPOT_METHOD_COMPILE_END(                                          \
+comp_name, strlen(comp_name),                                      \
+(char *) klass_name->bytes(), klass_name->utf8_length(),           \
+(char *) name->bytes(), name->utf8_length(),                       \
+(char *) signature->bytes(), signature->utf8_length(), (success)); \
+}
+#endif /* USDT2 */
+#else //  ndef DTRACE_ENABLED
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name)
+#define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success)
+#endif // ndef DTRACE_ENABLED
+bool CompileBroker::_initialized = false;
+volatile bool CompileBroker::_should_block = false;
+volatile jint CompileBroker::_print_compilation_warning = 0;
+volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
+// The installed compiler(s)
+AbstractCompiler* CompileBroker::_compilers[2];
+// These counters are used to assign an unique ID to each compilation.
+volatile jint CompileBroker::_compilation_id     = 0;
+volatile jint CompileBroker::_osr_compilation_id = 0;
+// Debugging information
+int  CompileBroker::_last_compile_type     = no_compile;
+int  CompileBroker::_last_compile_level    = CompLevel_none;
+char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
+// Performance counters
+PerfCounter* CompileBroker::_perf_total_compilation = NULL;
+PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
+PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
+PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
+PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
+PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
+PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
+PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
+PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
+PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
+PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
+PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
+PerfStringVariable* CompileBroker::_perf_last_method = NULL;
+PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
+PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
+PerfVariable*       CompileBroker::_perf_last_compile_type = NULL;
+PerfVariable*       CompileBroker::_perf_last_compile_size = NULL;
+PerfVariable*       CompileBroker::_perf_last_failed_type = NULL;
+PerfVariable*       CompileBroker::_perf_last_invalidated_type = NULL;
+// Timers and counters for generating statistics
+elapsedTimer CompileBroker::_t_total_compilation;
+elapsedTimer CompileBroker::_t_osr_compilation;
+elapsedTimer CompileBroker::_t_standard_compilation;
+int CompileBroker::_total_bailout_count          = 0;
+int CompileBroker::_total_invalidated_count      = 0;
+int CompileBroker::_total_compile_count          = 0;
+int CompileBroker::_total_osr_compile_count      = 0;
+int CompileBroker::_total_standard_compile_count = 0;
+int CompileBroker::_sum_osr_bytes_compiled       = 0;
+int CompileBroker::_sum_standard_bytes_compiled  = 0;
+int CompileBroker::_sum_nmethod_size             = 0;
+int CompileBroker::_sum_nmethod_code_size        = 0;
+long CompileBroker::_peak_compilation_time       = 0;
+CompileQueue* CompileBroker::_c2_method_queue    = NULL;
+CompileQueue* CompileBroker::_c1_method_queue    = NULL;
+CompileTask*  CompileBroker::_task_free_list     = NULL;
+GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL;
+class CompilationLog : public StringEventLog {
+public:
+CompilationLog() : StringEventLog("Compilation events") {
+}
+void log_compile(JavaThread* thread, CompileTask* task) {
+StringLogMessage lm;
+stringStream sstr = lm.stream();
+// msg.time_stamp().update_to(tty->time_stamp().ticks());
+task->print_compilation(&sstr, NULL, true);
+log(thread, "%s", (const char*)lm);
+}
+void log_nmethod(JavaThread* thread, nmethod* nm) {
+log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]",
+nm->compile_id(), nm->is_osr_method() ? "%" : "",
+p2i(nm), p2i(nm->code_begin()), p2i(nm->code_end()));
+}
+void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) {
+StringLogMessage lm;
+lm.print("%4d   COMPILE SKIPPED: %s", task->compile_id(), reason);
+if (retry_message != NULL) {
+lm.append(" (%s)", retry_message);
+}
+lm.print("\n");
+log(thread, "%s", (const char*)lm);
+}
+};
+static CompilationLog* _compilation_log = NULL;
+void compileBroker_init() {
+if (LogEvents) {
+_compilation_log = new CompilationLog();
+}
+}
+CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
+CompilerThread* thread = CompilerThread::current();
+thread->set_task(task);
+CompileLog*     log  = thread->log();
+if (log != NULL)  task->log_task_start(log);
+}
+CompileTaskWrapper::~CompileTaskWrapper() {
+CompilerThread* thread = CompilerThread::current();
+CompileTask* task = thread->task();
+CompileLog*  log  = thread->log();
+if (log != NULL)  task->log_task_done(log);
+thread->set_task(NULL);
+task->set_code_handle(NULL);
+thread->set_env(NULL);
+if (task->is_blocking()) {
+MutexLocker notifier(task->lock(), thread);
+task->mark_complete();
+// Notify the waiting thread that the compilation has completed.
+task->lock()->notify_all();
+} else {
+task->mark_complete();
+// By convention, the compiling thread is responsible for
+// recycling a non-blocking CompileTask.
+CompileBroker::free_task(task);
+}
+}
+// ------------------------------------------------------------------
+// CompileTask::initialize
+void CompileTask::initialize(int compile_id,
+methodHandle method,
+int osr_bci,
+int comp_level,
+methodHandle hot_method,
+int hot_count,
+const char* comment,
+bool is_blocking) {
+assert(!_lock->is_locked(), "bad locking");
+_compile_id = compile_id;
+_method = method();
+_method_holder = JNIHandles::make_global(method->method_holder()->klass_holder());
+_osr_bci = osr_bci;
+_is_blocking = is_blocking;
+_comp_level = comp_level;
+_num_inlined_bytecodes = 0;
+_is_complete = false;
+_is_success = false;
+_code_handle = NULL;
+_hot_method = NULL;
+_hot_method_holder = NULL;
+_hot_count = hot_count;
+_time_queued = 0;  // tidy
+_comment = comment;
+if (LogCompilation) {
+_time_queued = os::elapsed_counter();
+if (hot_method.not_null()) {
+if (hot_method == method) {
+_hot_method = _method;
+} else {
+_hot_method = hot_method();
+// only add loader or mirror if different from _method_holder
+_hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder());
+}
+}
+}
+_next = NULL;
+}
+// ------------------------------------------------------------------
+// CompileTask::code/set_code
+nmethod* CompileTask::code() const {
+if (_code_handle == NULL)  return NULL;
+return _code_handle->code();
+}
+void CompileTask::set_code(nmethod* nm) {
+if (_code_handle == NULL && nm == NULL)  return;
+guarantee(_code_handle != NULL, "");
+_code_handle->set_code(nm);
+if (nm == NULL)  _code_handle = NULL;  // drop the handle also
+}
+// ------------------------------------------------------------------
+// CompileTask::free
+void CompileTask::free() {
+set_code(NULL);
+assert(!_lock->is_locked(), "Should not be locked when freed");
+JNIHandles::destroy_global(_method_holder);
+JNIHandles::destroy_global(_hot_method_holder);
+}
+void CompileTask::mark_on_stack() {
+// Mark these methods as something redefine classes cannot remove.
+_method->set_on_stack(true);
+if (_hot_method != NULL) {
+_hot_method->set_on_stack(true);
+}
+}
+// ------------------------------------------------------------------
+// CompileTask::print
+void CompileTask::print() {
+tty->print("<CompileTask compile_id=%d ", _compile_id);
+tty->print("method=");
+_method->print_name(tty);
+tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
+_osr_bci, bool_to_str(_is_blocking),
+bool_to_str(_is_complete), bool_to_str(_is_success));
+}
+// ------------------------------------------------------------------
+// CompileTask::print_line_on_error
+//
+// This function is called by fatal error handler when the thread
+// causing troubles is a compiler thread.
+//
+// Do not grab any lock, do not allocate memory.
+//
+// Otherwise it's the same as CompileTask::print_line()
+//
+void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
+// print compiler name
+st->print("%s:", CompileBroker::compiler_name(comp_level()));
+print_compilation(st);
+}
+// ------------------------------------------------------------------
+// CompileTask::print_line
+void CompileTask::print_line() {
+ttyLocker ttyl;  // keep the following output all in one block
+// print compiler name if requested
+if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level()));
+print_compilation();
+}
+// ------------------------------------------------------------------
+// CompileTask::print_compilation_impl
+void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level,
+bool is_osr_method, int osr_bci, bool is_blocking,
+const char* msg, bool short_form) {
+if (!short_form) {
+st->print("%7d ", (int) st->time_stamp().milliseconds());  // print timestamp
+}
+st->print("%4d ", compile_id);    // print compilation number
+// For unloaded methods the transition to zombie occurs after the
+// method is cleared so it's impossible to report accurate
+// information for that case.
+bool is_synchronized = false;
+bool has_exception_handler = false;
+bool is_native = false;
+if (method != NULL) {
+is_synchronized       = method->is_synchronized();
+has_exception_handler = method->has_exception_handler();
+is_native             = method->is_native();
+}
+// method attributes
+const char compile_type   = is_osr_method                   ? '%' : ' ';
+const char sync_char      = is_synchronized                 ? 's' : ' ';
+const char exception_char = has_exception_handler           ? '!' : ' ';
+const char blocking_char  = is_blocking                     ? 'b' : ' ';
+const char native_char    = is_native                       ? 'n' : ' ';
+// print method attributes
+st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
+if (TieredCompilation) {
+if (comp_level != -1)  st->print("%d ", comp_level);
+else                   st->print("- ");
+}
+st->print("     ");  // more indent
+if (method == NULL) {
+st->print("(method)");
+} else {
+method->print_short_name(st);
+if (is_osr_method) {
+st->print(" @ %d", osr_bci);
+}
+if (method->is_native())
+st->print(" (native)");
+else
+st->print(" (%d bytes)", method->code_size());
+}
+if (msg != NULL) {
+st->print("   %s", msg);
+}
+if (!short_form) {
+st->cr();
+}
+}
+// ------------------------------------------------------------------
+// CompileTask::print_inlining
+void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
+//         1234567
+st->print("        ");     // print timestamp
+//         1234
+st->print("     ");        // print compilation number
+// method attributes
+if (method->is_loaded()) {
+const char sync_char      = method->is_synchronized()        ? 's' : ' ';
+const char exception_char = method->has_exception_handlers() ? '!' : ' ';
+const char monitors_char  = method->has_monitor_bytecodes()  ? 'm' : ' ';
+// print method attributes
+st->print(" %c%c%c  ", sync_char, exception_char, monitors_char);
+} else {
+//         %s!bn
+st->print("      ");     // print method attributes
+}
+if (TieredCompilation) {
+st->print("  ");
+}
+st->print("     ");        // more indent
+st->print("    ");         // initial inlining indent
+for (int i = 0; i < inline_level; i++)  st->print("  ");
+st->print("@ %d  ", bci);  // print bci
+method->print_short_name(st);
+if (method->is_loaded())
+st->print(" (%d bytes)", method->code_size());
+else
+st->print(" (not loaded)");
+if (msg != NULL) {
+st->print("   %s", msg);
+}
+st->cr();
+}
+// ------------------------------------------------------------------
+// CompileTask::print_inline_indent
+void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
+//         1234567
+st->print("        ");     // print timestamp
+//         1234
+st->print("     ");        // print compilation number
+//         %s!bn
+st->print("      ");       // print method attributes
+if (TieredCompilation) {
+st->print("  ");
+}
+st->print("     ");        // more indent
+st->print("    ");         // initial inlining indent
+for (int i = 0; i < inline_level; i++)  st->print("  ");
+}
+// ------------------------------------------------------------------
+// CompileTask::print_compilation
+void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) {
+bool is_osr_method = osr_bci() != InvocationEntryBci;
+print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form);
+}
+// ------------------------------------------------------------------
+// CompileTask::log_task
+void CompileTask::log_task(xmlStream* log) {
+Thread* thread = Thread::current();
+methodHandle method(thread, this->method());
+ResourceMark rm(thread);
+// <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
+log->print(" compile_id='%d'", _compile_id);
+if (_osr_bci != CompileBroker::standard_entry_bci) {
+log->print(" compile_kind='osr'");  // same as nmethod::compile_kind
+} // else compile_kind='c2c'
+if (!method.is_null())  log->method(method);
+if (_osr_bci != CompileBroker::standard_entry_bci) {
+log->print(" osr_bci='%d'", _osr_bci);
+}
+if (_comp_level != CompLevel_highest_tier) {
+log->print(" level='%d'", _comp_level);
+}
+if (_is_blocking) {
+log->print(" blocking='1'");
+}
+log->stamp();
+}
+// ------------------------------------------------------------------
+// CompileTask::log_task_queued
+void CompileTask::log_task_queued() {
+Thread* thread = Thread::current();
+ttyLocker ttyl;
+ResourceMark rm(thread);
+xtty->begin_elem("task_queued");
+log_task(xtty);
+if (_comment != NULL) {
+xtty->print(" comment='%s'", _comment);
+}
+if (_hot_method != NULL) {
+methodHandle hot(thread, _hot_method);
+methodHandle method(thread, _method);
+if (hot() != method()) {
+xtty->method(hot);
+}
+}
+if (_hot_count != 0) {
+xtty->print(" hot_count='%d'", _hot_count);
+}
+xtty->end_elem();
+}
+// ------------------------------------------------------------------
+// CompileTask::log_task_start
+void CompileTask::log_task_start(CompileLog* log)   {
+log->begin_head("task");
+log_task(log);
+log->end_head();
+}
+// ------------------------------------------------------------------
+// CompileTask::log_task_done
+void CompileTask::log_task_done(CompileLog* log) {
+Thread* thread = Thread::current();
+methodHandle method(thread, this->method());
+ResourceMark rm(thread);
+// <task_done ... stamp='1.234'>  </task>
+nmethod* nm = code();
+log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
+_is_success, nm == NULL ? 0 : nm->content_size(),
+method->invocation_count());
+int bec = method->backedge_count();
+if (bec != 0)  log->print(" backedge_count='%d'", bec);
+// Note:  "_is_complete" is about to be set, but is not.
+if (_num_inlined_bytecodes != 0) {
+log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
+}
+log->stamp();
+log->end_elem();
+log->tail("task");
+log->clear_identities();   // next task will have different CI
+if (log->unflushed_count() > 2000) {
+log->flush();
+}
+log->mark_file_end();
+}
+// Add a CompileTask to a CompileQueue
+void CompileQueue::add(CompileTask* task) {
+assert(lock()->owned_by_self(), "must own lock");
+task->set_next(NULL);
+task->set_prev(NULL);
+if (_last == NULL) {
+// The compile queue is empty.
+assert(_first == NULL, "queue is empty");
+_first = task;
+_last = task;
+} else {
+// Append the task to the queue.
+assert(_last->next() == NULL, "not last");
+_last->set_next(task);
+task->set_prev(_last);
+_last = task;
+}
+++_size;
+// Mark the method as being in the compile queue.
+task->method()->set_queued_for_compilation();
+if (CIPrintCompileQueue) {
+print();
+}
+if (LogCompilation && xtty != NULL) {
+task->log_task_queued();
+}
+// Notify CompilerThreads that a task is available.
+lock()->notify_all();
+}
+void CompileQueue::delete_all() {
+assert(lock()->owned_by_self(), "must own lock");
+if (_first != NULL) {
+for (CompileTask* task = _first; task != NULL; task = task->next()) {
+delete task;
+}
+_first = NULL;
+}
+}
+// ------------------------------------------------------------------
+// CompileQueue::get
+//
+// Get the next CompileTask from a CompileQueue
+CompileTask* CompileQueue::get() {
+NMethodSweeper::possibly_sweep();
+MutexLocker locker(lock());
+// If _first is NULL we have no more compile jobs. There are two reasons for
+// having no compile jobs: First, we compiled everything we wanted. Second,
+// we ran out of code cache so compilation has been disabled. In the latter
+// case we perform code cache sweeps to free memory such that we can re-enable
+// compilation.
+while (_first == NULL) {
+// Exit loop if compilation is disabled forever
+if (CompileBroker::is_compilation_disabled_forever()) {
+return NULL;
+}
+if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) {
+// Wait a certain amount of time to possibly do another sweep.
+// We must wait until stack scanning has happened so that we can
+// transition a method's state from 'not_entrant' to 'zombie'.
+long wait_time = NmethodSweepCheckInterval * 1000;
+if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) {
+// Only one thread at a time can do sweeping. Scale the
+// wait time according to the number of compiler threads.
+// As a result, the next sweep is likely to happen every 100ms
+// with an arbitrary number of threads that do sweeping.
+wait_time = 100 * CICompilerCount;
+}
+bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time);
+if (timeout) {
+MutexUnlocker ul(lock());
+NMethodSweeper::possibly_sweep();
+}
+} else {
+// If there are no compilation tasks and we can compile new jobs
+// (i.e., there is enough free space in the code cache) there is
+// no need to invoke the sweeper. As a result, the hotness of methods
+// remains unchanged. This behavior is desired, since we want to keep
+// the stable state, i.e., we do not want to evict methods from the
+// code cache if it is unnecessary.
+// We need a timed wait here, since compiler threads can exit if compilation
+// is disabled forever. We use 5 seconds wait time; the exiting of compiler threads
+// is not critical and we do not want idle compiler threads to wake up too often.
+lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000);
+}
+}
+if (CompileBroker::is_compilation_disabled_forever()) {
+return NULL;
+}
+CompileTask* task = CompilationPolicy::policy()->select_task(this);
+remove(task);
+return task;
+}
+void CompileQueue::remove(CompileTask* task)
+{
+assert(lock()->owned_by_self(), "must own lock");
+if (task->prev() != NULL) {
+task->prev()->set_next(task->next());
+} else {
+// max is the first element
+assert(task == _first, "Sanity");
+_first = task->next();
+}
+if (task->next() != NULL) {
+task->next()->set_prev(task->prev());
+} else {
+// max is the last element
+assert(task == _last, "Sanity");
+_last = task->prev();
+}
+--_size;
+}
+// methods in the compile queue need to be marked as used on the stack
+// so that they don't get reclaimed by Redefine Classes
+void CompileQueue::mark_on_stack() {
+CompileTask* task = _first;
+while (task != NULL) {
+task->mark_on_stack();
+task = task->next();
+}
+}
+// ------------------------------------------------------------------
+// CompileQueue::print
+void CompileQueue::print() {
+tty->print_cr("Contents of %s", name());
+tty->print_cr("----------------------");
+CompileTask* task = _first;
+while (task != NULL) {
+task->print_line();
+task = task->next();
+}
+tty->print_cr("----------------------");
+}
+CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
+_current_method[0] = '\0';
+_compile_type = CompileBroker::no_compile;
+if (UsePerfData) {
+ResourceMark rm;
+// create the thread instance name space string - don't create an
+// instance subspace if instance is -1 - keeps the adapterThread
+// counters  from having a ".0" namespace.
+const char* thread_i = (instance == -1) ? thread_name :
+PerfDataManager::name_space(thread_name, instance);
+char* name = PerfDataManager::counter_name(thread_i, "method");
+_perf_current_method =
+PerfDataManager::create_string_variable(SUN_CI, name,
+cmname_buffer_length,
+_current_method, CHECK);
+name = PerfDataManager::counter_name(thread_i, "type");
+_perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
+PerfData::U_None,
+(jlong)_compile_type,
+CHECK);
+name = PerfDataManager::counter_name(thread_i, "time");
+_perf_time = PerfDataManager::create_counter(SUN_CI, name,
+PerfData::U_Ticks, CHECK);
+name = PerfDataManager::counter_name(thread_i, "compiles");
+_perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
+PerfData::U_Events, CHECK);
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::compilation_init
+//
+// Initialize the Compilation object
+void CompileBroker::compilation_init() {
+_last_method_compiled[0] = '\0';
+// No need to initialize compilation system if we do not use it.
+if (!UseCompiler) {
+return;
+}
+#ifndef SHARK
+// Set the interface to the current compiler(s).
+int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
+int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
+#ifdef COMPILER1
+if (c1_count > 0) {
+_compilers[0] = new Compiler();
+}
+#endif // COMPILER1
+#ifdef COMPILER2
+if (c2_count > 0) {
+_compilers[1] = new C2Compiler();
+}
+#endif // COMPILER2
+#else // SHARK
+int c1_count = 0;
+int c2_count = 1;
+_compilers[1] = new SharkCompiler();
+#endif // SHARK
+// Initialize the CompileTask free list
+_task_free_list = NULL;
+// Start the CompilerThreads
+init_compiler_threads(c1_count, c2_count);
+// totalTime performance counter is always created as it is required
+// by the implementation of java.lang.management.CompilationMBean.
+{
+EXCEPTION_MARK;
+_perf_total_compilation =
+PerfDataManager::create_counter(JAVA_CI, "totalTime",
+PerfData::U_Ticks, CHECK);
+}
+if (UsePerfData) {
+EXCEPTION_MARK;
+// create the jvmstat performance counters
+_perf_osr_compilation =
+PerfDataManager::create_counter(SUN_CI, "osrTime",
+PerfData::U_Ticks, CHECK);
+_perf_standard_compilation =
+PerfDataManager::create_counter(SUN_CI, "standardTime",
+PerfData::U_Ticks, CHECK);
+_perf_total_bailout_count =
+PerfDataManager::create_counter(SUN_CI, "totalBailouts",
+PerfData::U_Events, CHECK);
+_perf_total_invalidated_count =
+PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
+PerfData::U_Events, CHECK);
+_perf_total_compile_count =
+PerfDataManager::create_counter(SUN_CI, "totalCompiles",
+PerfData::U_Events, CHECK);
+_perf_total_osr_compile_count =
+PerfDataManager::create_counter(SUN_CI, "osrCompiles",
+PerfData::U_Events, CHECK);
+_perf_total_standard_compile_count =
+PerfDataManager::create_counter(SUN_CI, "standardCompiles",
+PerfData::U_Events, CHECK);
+_perf_sum_osr_bytes_compiled =
+PerfDataManager::create_counter(SUN_CI, "osrBytes",
+PerfData::U_Bytes, CHECK);
+_perf_sum_standard_bytes_compiled =
+PerfDataManager::create_counter(SUN_CI, "standardBytes",
+PerfData::U_Bytes, CHECK);
+_perf_sum_nmethod_size =
+PerfDataManager::create_counter(SUN_CI, "nmethodSize",
+PerfData::U_Bytes, CHECK);
+_perf_sum_nmethod_code_size =
+PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
+PerfData::U_Bytes, CHECK);
+_perf_last_method =
+PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
+CompilerCounters::cmname_buffer_length,
+"", CHECK);
+_perf_last_failed_method =
+PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
+CompilerCounters::cmname_buffer_length,
+"", CHECK);
+_perf_last_invalidated_method =
+PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
+CompilerCounters::cmname_buffer_length,
+"", CHECK);
+_perf_last_compile_type =
+PerfDataManager::create_variable(SUN_CI, "lastType",
+PerfData::U_None,
+(jlong)CompileBroker::no_compile,
+CHECK);
+_perf_last_compile_size =
+PerfDataManager::create_variable(SUN_CI, "lastSize",
+PerfData::U_Bytes,
+(jlong)CompileBroker::no_compile,
+CHECK);
+_perf_last_failed_type =
+PerfDataManager::create_variable(SUN_CI, "lastFailedType",
+PerfData::U_None,
+(jlong)CompileBroker::no_compile,
+CHECK);
+_perf_last_invalidated_type =
+PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
+PerfData::U_None,
+(jlong)CompileBroker::no_compile,
+CHECK);
+}
+_initialized = true;
+}
+CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters,
+AbstractCompiler* comp, TRAPS) {
+CompilerThread* compiler_thread = NULL;
+Klass* k =
+SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(),
+true, CHECK_0);
+instanceKlassHandle klass (THREAD, k);
+instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
+Handle string = java_lang_String::create_from_str(name, CHECK_0);
+// Initialize thread_oop to put it into the system threadGroup
+Handle thread_group (THREAD,  Universe::system_thread_group());
+JavaValue result(T_VOID);
+JavaCalls::call_special(&result, thread_oop,
+klass,
+vmSymbols::object_initializer_name(),
+vmSymbols::threadgroup_string_void_signature(),
+thread_group,
+string,
+CHECK_0);
+{
+MutexLocker mu(Threads_lock, THREAD);
+compiler_thread = new CompilerThread(queue, counters);
+// At this point the new CompilerThread data-races with this startup
+// thread (which I believe is the primoridal thread and NOT the VM
+// thread).  This means Java bytecodes being executed at startup can
+// queue compile jobs which will run at whatever default priority the
+// newly created CompilerThread runs at.
+// At this point it may be possible that no osthread was created for the
+// JavaThread due to lack of memory. We would have to throw an exception
+// in that case. However, since this must work and we do not allow
+// exceptions anyway, check and abort if this fails.
+if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
+vm_exit_during_initialization("java.lang.OutOfMemoryError",
+"unable to create new native thread");
+}
+java_lang_Thread::set_thread(thread_oop(), compiler_thread);
+// Note that this only sets the JavaThread _priority field, which by
+// definition is limited to Java priorities and not OS priorities.
+// The os-priority is set in the CompilerThread startup code itself
+java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
+// Note that we cannot call os::set_priority because it expects Java
+// priorities and we are *explicitly* using OS priorities so that it's
+// possible to set the compiler thread priority higher than any Java
+// thread.
+int native_prio = CompilerThreadPriority;
+if (native_prio == -1) {
+if (UseCriticalCompilerThreadPriority) {
+native_prio = os::java_to_os_priority[CriticalPriority];
+} else {
+native_prio = os::java_to_os_priority[NearMaxPriority];
+}
+}
+os::set_native_priority(compiler_thread, native_prio);
+java_lang_Thread::set_daemon(thread_oop());
+compiler_thread->set_threadObj(thread_oop());
+compiler_thread->set_compiler(comp);
+Threads::add(compiler_thread);
+Thread::start(compiler_thread);
+}
+// Let go of Threads_lock before yielding
+os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
+return compiler_thread;
+}
+void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) {
+EXCEPTION_MARK;
+#if !defined(ZERO) && !defined(SHARK)
+assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?");
+#endif // !ZERO && !SHARK
+// Initialize the compilation queue
+if (c2_compiler_count > 0) {
+_c2_method_queue  = new CompileQueue("C2MethodQueue",  MethodCompileQueue_lock);
+_compilers[1]->set_num_compiler_threads(c2_compiler_count);
+}
+if (c1_compiler_count > 0) {
+_c1_method_queue  = new CompileQueue("C1MethodQueue",  MethodCompileQueue_lock);
+_compilers[0]->set_num_compiler_threads(c1_compiler_count);
+}
+int compiler_count = c1_compiler_count + c2_compiler_count;
+_compiler_threads =
+new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true);
+char name_buffer[256];
+for (int i = 0; i < c2_compiler_count; i++) {
+// Create a name for our thread.
+sprintf(name_buffer, "C2 CompilerThread%d", i);
+CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
+// Shark and C2
+CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK);
+_compiler_threads->append(new_thread);
+}
+for (int i = c2_compiler_count; i < compiler_count; i++) {
+// Create a name for our thread.
+sprintf(name_buffer, "C1 CompilerThread%d", i);
+CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
+// C1
+CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK);
+_compiler_threads->append(new_thread);
+}
+if (UsePerfData) {
+PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK);
+}
+}
+// Set the methods on the stack as on_stack so that redefine classes doesn't
+// reclaim them
+void CompileBroker::mark_on_stack() {
+if (_c2_method_queue != NULL) {
+_c2_method_queue->mark_on_stack();
+}
+if (_c1_method_queue != NULL) {
+_c1_method_queue->mark_on_stack();
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::compile_method
+//
+// Request compilation of a method.
+void CompileBroker::compile_method_base(methodHandle method,
+int osr_bci,
+int comp_level,
+methodHandle hot_method,
+int hot_count,
+const char* comment,
+Thread* thread) {
+// do nothing if compiler thread(s) is not available
+if (!_initialized ) {
+return;
+}
+guarantee(!method->is_abstract(), "cannot compile abstract methods");
+assert(method->method_holder()->oop_is_instance(),
+"sanity check");
+assert(!method->method_holder()->is_not_initialized(),
+"method holder must be initialized");
+assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys");
+if (CIPrintRequests) {
+tty->print("request: ");
+method->print_short_name(tty);
+if (osr_bci != InvocationEntryBci) {
+tty->print(" osr_bci: %d", osr_bci);
+}
+tty->print(" comment: %s count: %d", comment, hot_count);
+if (!hot_method.is_null()) {
+tty->print(" hot: ");
+if (hot_method() != method()) {
+hot_method->print_short_name(tty);
+} else {
+tty->print("yes");
+}
+}
+tty->cr();
+}
+// A request has been made for compilation.  Before we do any
+// real work, check to see if the method has been compiled
+// in the meantime with a definitive result.
+if (compilation_is_complete(method, osr_bci, comp_level)) {
+return;
+}
+#ifndef PRODUCT
+if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
+if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
+// Positive OSROnlyBCI means only compile that bci.  Negative means don't compile that BCI.
+return;
+}
+}
+#endif
+// If this method is already in the compile queue, then
+// we do not block the current thread.
+if (compilation_is_in_queue(method, osr_bci)) {
+// We may want to decay our counter a bit here to prevent
+// multiple denied requests for compilation.  This is an
+// open compilation policy issue. Note: The other possibility,
+// in the case that this is a blocking compile request, is to have
+// all subsequent blocking requesters wait for completion of
+// ongoing compiles. Note that in this case we'll need a protocol
+// for freeing the associated compile tasks. [Or we could have
+// a single static monitor on which all these waiters sleep.]
+return;
+}
+// If the requesting thread is holding the pending list lock
+// then we just return. We can't risk blocking while holding
+// the pending list lock or a 3-way deadlock may occur
+// between the reference handler thread, a GC (instigated
+// by a compiler thread), and compiled method registration.
+if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) {
+return;
+}
+// Outputs from the following MutexLocker block:
+CompileTask* task     = NULL;
+bool         blocking = false;
+CompileQueue* queue  = compile_queue(comp_level);
+// Acquire our lock.
+{
+MutexLocker locker(queue->lock(), thread);
+// Make sure the method has not slipped into the queues since
+// last we checked; note that those checks were "fast bail-outs".
+// Here we need to be more careful, see 14012000 below.
+if (compilation_is_in_queue(method, osr_bci)) {
+return;
+}
+// We need to check again to see if the compilation has
+// completed.  A previous compilation may have registered
+// some result.
+if (compilation_is_complete(method, osr_bci, comp_level)) {
+return;
+}
+// We now know that this compilation is not pending, complete,
+// or prohibited.  Assign a compile_id to this compilation
+// and check to see if it is in our [Start..Stop) range.
+int compile_id = assign_compile_id(method, osr_bci);
+if (compile_id == 0) {
+// The compilation falls outside the allowed range.
+return;
+}
+// Should this thread wait for completion of the compile?
+blocking = is_compile_blocking(method, osr_bci);
+// We will enter the compilation in the queue.
+// 14012000: Note that this sets the queued_for_compile bits in
+// the target method. We can now reason that a method cannot be
+// queued for compilation more than once, as follows:
+// Before a thread queues a task for compilation, it first acquires
+// the compile queue lock, then checks if the method's queued bits
+// are set or it has already been compiled. Thus there can not be two
+// instances of a compilation task for the same method on the
+// compilation queue. Consider now the case where the compilation
+// thread has already removed a task for that method from the queue
+// and is in the midst of compiling it. In this case, the
+// queued_for_compile bits must be set in the method (and these
+// will be visible to the current thread, since the bits were set
+// under protection of the compile queue lock, which we hold now.
+// When the compilation completes, the compiler thread first sets
+// the compilation result and then clears the queued_for_compile
+// bits. Neither of these actions are protected by a barrier (or done
+// under the protection of a lock), so the only guarantee we have
+// (on machines with TSO (Total Store Order)) is that these values
+// will update in that order. As a result, the only combinations of
+// these bits that the current thread will see are, in temporal order:
+// <RESULT, QUEUE> :
+//     <0, 1> : in compile queue, but not yet compiled
+//     <1, 1> : compiled but queue bit not cleared
+//     <1, 0> : compiled and queue bit cleared
+// Because we first check the queue bits then check the result bits,
+// we are assured that we cannot introduce a duplicate task.
+// Note that if we did the tests in the reverse order (i.e. check
+// result then check queued bit), we could get the result bit before
+// the compilation completed, and the queue bit after the compilation
+// completed, and end up introducing a "duplicate" (redundant) task.
+// In that case, the compiler thread should first check if a method
+// has already been compiled before trying to compile it.
+// NOTE: in the event that there are multiple compiler threads and
+// there is de-optimization/recompilation, things will get hairy,
+// and in that case it's best to protect both the testing (here) of
+// these bits, and their updating (here and elsewhere) under a
+// common lock.
+task = create_compile_task(queue,
+compile_id, method,
+osr_bci, comp_level,
+hot_method, hot_count, comment,
+blocking);
+}
+if (blocking) {
+wait_for_completion(task);
+}
+}
+nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
+int comp_level,
+methodHandle hot_method, int hot_count,
+const char* comment, Thread* THREAD) {
+// make sure arguments make sense
+assert(method->method_holder()->oop_is_instance(), "not an instance method");
+assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
+assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
+assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized");
+// allow any levels for WhiteBox
+assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered");
+// return quickly if possible
+// lock, make sure that the compilation
+// isn't prohibited in a straightforward way.
+AbstractCompiler *comp = CompileBroker::compiler(comp_level);
+if (comp == NULL || !comp->can_compile_method(method) ||
+compilation_is_prohibited(method, osr_bci, comp_level)) {
+return NULL;
+}
+if (osr_bci == InvocationEntryBci) {
+// standard compilation
+nmethod* method_code = method->code();
+if (method_code != NULL) {
+if (compilation_is_complete(method, osr_bci, comp_level)) {
+return method_code;
+}
+}
+if (method->is_not_compilable(comp_level)) {
+return NULL;
+}
+} else {
+// osr compilation
+#ifndef TIERED
+// seems like an assert of dubious value
+assert(comp_level == CompLevel_highest_tier,
+"all OSR compiles are assumed to be at a single compilation lavel");
+#endif // TIERED
+// We accept a higher level osr method
+nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
+if (nm != NULL) return nm;
+if (method->is_not_osr_compilable(comp_level)) return NULL;
+}
+assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
+// some prerequisites that are compiler specific
+if (comp->is_c2() || comp->is_shark()) {
+method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL);
+// Resolve all classes seen in the signature of the method
+// we are compiling.
+Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL);
+}
+// If the method is native, do the lookup in the thread requesting
+// the compilation. Native lookups can load code, which is not
+// permitted during compilation.
+//
+// Note: A native method implies non-osr compilation which is
+//       checked with an assertion at the entry of this method.
+if (method->is_native() && !method->is_method_handle_intrinsic()) {
+bool in_base_library;
+address adr = NativeLookup::lookup(method, in_base_library, THREAD);
+if (HAS_PENDING_EXCEPTION) {
+// In case of an exception looking up the method, we just forget
+// about it. The interpreter will kick-in and throw the exception.
+method->set_not_compilable(); // implies is_not_osr_compilable()
+CLEAR_PENDING_EXCEPTION;
+return NULL;
+}
+assert(method->has_native_function(), "must have native code by now");
+}
+// RedefineClasses() has replaced this method; just return
+if (method->is_old()) {
+return NULL;
+}
+// JVMTI -- post_compile_event requires jmethod_id() that may require
+// a lock the compiling thread can not acquire. Prefetch it here.
+if (JvmtiExport::should_post_compiled_method_load()) {
+method->jmethod_id();
+}
+// do the compilation
+if (method->is_native()) {
+if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) {
+// To properly handle the appendix argument for out-of-line calls we are using a small trampoline that
+// pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime).
+//
+// Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter
+// in this case.  If we can't generate one and use it we can not execute the out-of-line method handle calls.
+AdapterHandlerLibrary::create_native_wrapper(method);
+} else {
+return NULL;
+}
+} else {
+// If the compiler is shut off due to code cache getting full
+// fail out now so blocking compiles dont hang the java thread
+if (!should_compile_new_jobs()) {
+CompilationPolicy::policy()->delay_compilation(method());
+return NULL;
+}
+compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD);
+}
+// return requested nmethod
+// We accept a higher level osr method
+return osr_bci  == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
+}
+// ------------------------------------------------------------------
+// CompileBroker::compilation_is_complete
+//
+// See if compilation of this method is already complete.
+bool CompileBroker::compilation_is_complete(methodHandle method,
+int          osr_bci,
+int          comp_level) {
+bool is_osr = (osr_bci != standard_entry_bci);
+if (is_osr) {
+if (method->is_not_osr_compilable(comp_level)) {
+return true;
+} else {
+nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
+return (result != NULL);
+}
+} else {
+if (method->is_not_compilable(comp_level)) {
+return true;
+} else {
+nmethod* result = method->code();
+if (result == NULL) return false;
+return comp_level == result->comp_level();
+}
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::compilation_is_in_queue
+//
+// See if this compilation is already requested.
+//
+// Implementation note: there is only a single "is in queue" bit
+// for each method.  This means that the check below is overly
+// conservative in the sense that an osr compilation in the queue
+// will block a normal compilation from entering the queue (and vice
+// versa).  This can be remedied by a full queue search to disambiguate
+// cases.  If it is deemed profitible, this may be done.
+bool CompileBroker::compilation_is_in_queue(methodHandle method,
+int          osr_bci) {
+return method->queued_for_compilation();
+}
+// ------------------------------------------------------------------
+// CompileBroker::compilation_is_prohibited
+//
+// See if this compilation is not allowed.
+bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
+bool is_native = method->is_native();
+// Some compilers may not support the compilation of natives.
+AbstractCompiler *comp = compiler(comp_level);
+if (is_native &&
+(!CICompileNatives || comp == NULL || !comp->supports_native())) {
+method->set_not_compilable_quietly(comp_level);
+return true;
+}
+bool is_osr = (osr_bci != standard_entry_bci);
+// Some compilers may not support on stack replacement.
+if (is_osr &&
+(!CICompileOSR || comp == NULL || !comp->supports_osr())) {
+method->set_not_osr_compilable(comp_level);
+return true;
+}
+// The method may be explicitly excluded by the user.
+bool quietly;
+if (CompilerOracle::should_exclude(method, quietly)) {
+if (!quietly) {
+// This does not happen quietly...
+ResourceMark rm;
+tty->print("### Excluding %s:%s",
+method->is_native() ? "generation of native wrapper" : "compile",
+(method->is_static() ? " static" : ""));
+method->print_short_name(tty);
+tty->cr();
+}
+method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle");
+}
+return false;
+}
+/**
+* Generate serialized IDs for compilation requests. If certain debugging flags are used
+* and the ID is not within the specified range, the method is not compiled and 0 is returned.
+* The function also allows to generate separate compilation IDs for OSR compilations.
+*/
+int CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
+#ifdef ASSERT
+bool is_osr = (osr_bci != standard_entry_bci);
+int id;
+if (method->is_native()) {
+assert(!is_osr, "can't be osr");
+// Adapters, native wrappers and method handle intrinsics
+// should be generated always.
+return Atomic::add(1, &_compilation_id);
+} else if (CICountOSR && is_osr) {
+id = Atomic::add(1, &_osr_compilation_id);
+if (CIStartOSR <= id && id < CIStopOSR) {
+return id;
+}
+} else {
+id = Atomic::add(1, &_compilation_id);
+if (CIStart <= id && id < CIStop) {
+return id;
+}
+}
+// Method was not in the appropriate compilation range.
+method->set_not_compilable_quietly();
+return 0;
+#else
+// CICountOSR is a develop flag and set to 'false' by default. In a product built,
+// only _compilation_id is incremented.
+return Atomic::add(1, &_compilation_id);
+#endif
+}
+// ------------------------------------------------------------------
+// CompileBroker::is_compile_blocking
+//
+// Should the current thread be blocked until this compilation request
+// has been fulfilled?
+bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
+assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock");
+return !BackgroundCompilation;
+}
+// ------------------------------------------------------------------
+// CompileBroker::preload_classes
+void CompileBroker::preload_classes(methodHandle method, TRAPS) {
+// Move this code over from c1_Compiler.cpp
+ShouldNotReachHere();
+}
+// ------------------------------------------------------------------
+// CompileBroker::create_compile_task
+//
+// Create a CompileTask object representing the current request for
+// compilation.  Add this task to the queue.
+CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
+int           compile_id,
+methodHandle  method,
+int           osr_bci,
+int           comp_level,
+methodHandle  hot_method,
+int           hot_count,
+const char*   comment,
+bool          blocking) {
+CompileTask* new_task = allocate_task();
+new_task->initialize(compile_id, method, osr_bci, comp_level,
+hot_method, hot_count, comment,
+blocking);
+queue->add(new_task);
+return new_task;
+}
+// ------------------------------------------------------------------
+// CompileBroker::allocate_task
+//
+// Allocate a CompileTask, from the free list if possible.
+CompileTask* CompileBroker::allocate_task() {
+MutexLocker locker(CompileTaskAlloc_lock);
+CompileTask* task = NULL;
+if (_task_free_list != NULL) {
+task = _task_free_list;
+_task_free_list = task->next();
+task->set_next(NULL);
+} else {
+task = new CompileTask();
+task->set_next(NULL);
+}
+return task;
+}
+// ------------------------------------------------------------------
+// CompileBroker::free_task
+//
+// Add a task to the free list.
+void CompileBroker::free_task(CompileTask* task) {
+MutexLocker locker(CompileTaskAlloc_lock);
+task->free();
+task->set_next(_task_free_list);
+_task_free_list = task;
+}
+// ------------------------------------------------------------------
+// CompileBroker::wait_for_completion
+//
+// Wait for the given method CompileTask to complete.
+void CompileBroker::wait_for_completion(CompileTask* task) {
+if (CIPrintCompileQueue) {
+tty->print_cr("BLOCKING FOR COMPILE");
+}
+assert(task->is_blocking(), "can only wait on blocking task");
+JavaThread *thread = JavaThread::current();
+thread->set_blocked_on_compilation(true);
+methodHandle method(thread, task->method());
+{
+MutexLocker waiter(task->lock(), thread);
+while (!task->is_complete())
+task->lock()->wait();
+}
+// It is harmless to check this status without the lock, because
+// completion is a stable property (until the task object is recycled).
+assert(task->is_complete(), "Compilation should have completed");
+assert(task->code_handle() == NULL, "must be reset");
+thread->set_blocked_on_compilation(false);
+// By convention, the waiter is responsible for recycling a
+// blocking CompileTask. Since there is only one waiter ever
+// waiting on a CompileTask, we know that no one else will
+// be using this CompileTask; we can free it.
+free_task(task);
+}
+// Initialize compiler thread(s) + compiler object(s). The postcondition
+// of this function is that the compiler runtimes are initialized and that
+//compiler threads can start compiling.
+bool CompileBroker::init_compiler_runtime() {
+CompilerThread* thread = CompilerThread::current();
+AbstractCompiler* comp = thread->compiler();
+// Final sanity check - the compiler object must exist
+guarantee(comp != NULL, "Compiler object must exist");
+int system_dictionary_modification_counter;
+{
+MutexLocker locker(Compile_lock, thread);
+system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
+}
+{
+// Must switch to native to allocate ci_env
+ThreadToNativeFromVM ttn(thread);
+ciEnv ci_env(NULL, system_dictionary_modification_counter);
+// Cache Jvmti state
+ci_env.cache_jvmti_state();
+// Cache DTrace flags
+ci_env.cache_dtrace_flags();
+// Switch back to VM state to do compiler initialization
+ThreadInVMfromNative tv(thread);
+ResetNoHandleMark rnhm;
+if (!comp->is_shark()) {
+// Perform per-thread and global initializations
+comp->initialize();
+}
+}
+if (comp->is_failed()) {
+disable_compilation_forever();
+// If compiler initialization failed, no compiler thread that is specific to a
+// particular compiler runtime will ever start to compile methods.
+shutdown_compiler_runtime(comp, thread);
+return false;
+}
+// C1 specific check
+if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) {
+warning("Initialization of %s thread failed (no space to run compilers)", thread->name());
+return false;
+}
+return true;
+}
+// If C1 and/or C2 initialization failed, we shut down all compilation.
+// We do this to keep things simple. This can be changed if it ever turns out to be
+// a problem.
+void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) {
+// Free buffer blob, if allocated
+if (thread->get_buffer_blob() != NULL) {
+MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
+CodeCache::free(thread->get_buffer_blob());
+}
+if (comp->should_perform_shutdown()) {
+// There are two reasons for shutting down the compiler
+// 1) compiler runtime initialization failed
+// 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing
+warning("Shutting down compiler %s (no space to run compilers)", comp->name());
+// Only one thread per compiler runtime object enters here
+// Set state to shut down
+comp->set_shut_down();
+MutexLocker mu(MethodCompileQueue_lock, thread);
+CompileQueue* queue;
+if (_c1_method_queue != NULL) {
+_c1_method_queue->delete_all();
+queue = _c1_method_queue;
+_c1_method_queue = NULL;
+delete _c1_method_queue;
+}
+if (_c2_method_queue != NULL) {
+_c2_method_queue->delete_all();
+queue = _c2_method_queue;
+_c2_method_queue = NULL;
+delete _c2_method_queue;
+}
+// We could delete compiler runtimes also. However, there are references to
+// the compiler runtime(s) (e.g.,  nmethod::is_compiled_by_c1()) which then
+// fail. This can be done later if necessary.
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::compiler_thread_loop
+//
+// The main loop run by a CompilerThread.
+void CompileBroker::compiler_thread_loop() {
+CompilerThread* thread = CompilerThread::current();
+CompileQueue* queue = thread->queue();
+// For the thread that initializes the ciObjectFactory
+// this resource mark holds all the shared objects
+ResourceMark rm;
+// First thread to get here will initialize the compiler interface
+if (!ciObjectFactory::is_initialized()) {
+ASSERT_IN_VM;
+MutexLocker only_one (CompileThread_lock, thread);
+if (!ciObjectFactory::is_initialized()) {
+ciObjectFactory::initialize();
+}
+}
+// Open a log.
+if (LogCompilation) {
+init_compiler_thread_log();
+}
+CompileLog* log = thread->log();
+if (log != NULL) {
+log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'",
+thread->name(),
+os::current_thread_id(),
+os::current_process_id());
+log->stamp();
+log->end_elem();
+}
+// If compiler thread/runtime initialization fails, exit the compiler thread
+if (!init_compiler_runtime()) {
+return;
+}
+// Poll for new compilation tasks as long as the JVM runs. Compilation
+// should only be disabled if something went wrong while initializing the
+// compiler runtimes. This, in turn, should not happen. The only known case
+// when compiler runtime initialization fails is if there is not enough free
+// space in the code cache to generate the necessary stubs, etc.
+while (!is_compilation_disabled_forever()) {
+// We need this HandleMark to avoid leaking VM handles.
+HandleMark hm(thread);
+if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) {
+// the code cache is really full
+handle_full_code_cache();
+}
+CompileTask* task = queue->get();
+if (task == NULL) {
+continue;
+}
+// Give compiler threads an extra quanta.  They tend to be bursty and
+// this helps the compiler to finish up the job.
+if( CompilerThreadHintNoPreempt )
+os::hint_no_preempt();
+// trace per thread time and compile statistics
+CompilerCounters* counters = ((CompilerThread*)thread)->counters();
+PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
+// Assign the task to the current thread.  Mark this compilation
+// thread as active for the profiler.
+CompileTaskWrapper ctw(task);
+nmethodLocker result_handle;  // (handle for the nmethod produced by this task)
+task->set_code_handle(&result_handle);
+methodHandle method(thread, task->method());
+// Never compile a method if breakpoints are present in it
+if (method()->number_of_breakpoints() == 0) {
+// Compile the method.
+if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
+#ifdef COMPILER1
+// Allow repeating compilations for the purpose of benchmarking
+// compile speed. This is not useful for customers.
+if (CompilationRepeat != 0) {
+int compile_count = CompilationRepeat;
+while (compile_count > 0) {
+invoke_compiler_on_method(task);
+nmethod* nm = method->code();
+if (nm != NULL) {
+nm->make_zombie();
+method->clear_code();
+}
+compile_count--;
+}
+}
+#endif /* COMPILER1 */
+invoke_compiler_on_method(task);
+} else {
+// After compilation is disabled, remove remaining methods from queue
+method->clear_queued_for_compilation();
+}
+}
+}
+// Shut down compiler runtime
+shutdown_compiler_runtime(thread->compiler(), thread);
+}
+// ------------------------------------------------------------------
+// CompileBroker::init_compiler_thread_log
+//
+// Set up state required by +LogCompilation.
+void CompileBroker::init_compiler_thread_log() {
+CompilerThread* thread = CompilerThread::current();
+char  file_name[4*K];
+FILE* fp = NULL;
+intx thread_id = os::current_thread_id();
+for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
+const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
+if (dir == NULL) {
+jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log",
+thread_id, os::current_process_id());
+} else {
+jio_snprintf(file_name, sizeof(file_name),
+"%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
+os::file_separator(), thread_id, os::current_process_id());
+}
+fp = fopen(file_name, "at");
+if (fp != NULL) {
+if (LogCompilation && Verbose) {
+tty->print_cr("Opening compilation log %s", file_name);
+}
+CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id);
+thread->init_log(log);
+if (xtty != NULL) {
+ttyLocker ttyl;
+// Record any per thread log files
+xtty->elem("thread_logfile thread='" INTX_FORMAT "' filename='%s'", thread_id, file_name);
+}
+return;
+}
+}
+warning("Cannot open log file: %s", file_name);
+}
+// ------------------------------------------------------------------
+// CompileBroker::set_should_block
+//
+// Set _should_block.
+// Call this from the VM, with Threads_lock held and a safepoint requested.
+void CompileBroker::set_should_block() {
+assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
+assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
+#ifndef PRODUCT
+if (PrintCompilation && (Verbose || WizardMode))
+tty->print_cr("notifying compiler thread pool to block");
+#endif
+_should_block = true;
+}
+// ------------------------------------------------------------------
+// CompileBroker::maybe_block
+//
+// Call this from the compiler at convenient points, to poll for _should_block.
+void CompileBroker::maybe_block() {
+if (_should_block) {
+#ifndef PRODUCT
+if (PrintCompilation && (Verbose || WizardMode))
+tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", p2i(Thread::current()));
+#endif
+ThreadInVMfromNative tivfn(JavaThread::current());
+}
+}
+// wrapper for CodeCache::print_summary()
+static void codecache_print(bool detailed)
+{
+ResourceMark rm;
+stringStream s;
+// Dump code cache  into a buffer before locking the tty,
+{
+MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
+CodeCache::print_summary(&s, detailed);
+}
+ttyLocker ttyl;
+tty->print("%s", s.as_string());
+}
+// ------------------------------------------------------------------
+// CompileBroker::invoke_compiler_on_method
+//
+// Compile a method.
+//
+void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
+if (PrintCompilation) {
+ResourceMark rm;
+task->print_line();
+}
+elapsedTimer time;
+CompilerThread* thread = CompilerThread::current();
+ResourceMark rm(thread);
+if (LogEvents) {
+_compilation_log->log_compile(thread, task);
+}
+// Common flags.
+uint compile_id = task->compile_id();
+int osr_bci = task->osr_bci();
+bool is_osr = (osr_bci != standard_entry_bci);
+bool should_log = (thread->log() != NULL);
+bool should_break = false;
+int task_level = task->comp_level();
+{
+// create the handle inside it's own block so it can't
+// accidentally be referenced once the thread transitions to
+// native.  The NoHandleMark before the transition should catch
+// any cases where this occurs in the future.
+methodHandle method(thread, task->method());
+should_break = check_break_at(method, compile_id, is_osr);
+if (should_log && !CompilerOracle::should_log(method)) {
+should_log = false;
+}
+assert(!method->is_native(), "no longer compile natives");
+// Save information about this method in case of failure.
+set_last_compile(thread, method, is_osr, task_level);
+DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level));
+}
+// Allocate a new set of JNI handles.
+push_jni_handle_block();
+Method* target_handle = task->method();
+int compilable = ciEnv::MethodCompilable;
+{
+int system_dictionary_modification_counter;
+{
+MutexLocker locker(Compile_lock, thread);
+system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
+}
+NoHandleMark  nhm;
+ThreadToNativeFromVM ttn(thread);
+ciEnv ci_env(task, system_dictionary_modification_counter);
+if (should_break) {
+ci_env.set_break_at_compile(true);
+}
+if (should_log) {
+ci_env.set_log(thread->log());
+}
+assert(thread->env() == &ci_env, "set by ci_env");
+// The thread-env() field is cleared in ~CompileTaskWrapper.
+// Cache Jvmti state
+ci_env.cache_jvmti_state();
+// Cache DTrace flags
+ci_env.cache_dtrace_flags();
+ciMethod* target = ci_env.get_method_from_handle(target_handle);
+TraceTime t1("compilation", &time);
+EventCompilation event;
+AbstractCompiler *comp = compiler(task_level);
+if (comp == NULL) {
+ci_env.record_method_not_compilable("no compiler", !TieredCompilation);
+} else {
+comp->compile_method(&ci_env, target, osr_bci);
+}
+if (!ci_env.failing() && task->code() == NULL) {
+//assert(false, "compiler should always document failure");
+// The compiler elected, without comment, not to register a result.
+// Do not attempt further compilations of this method.
+ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
+}
+// Copy this bit to the enclosing block:
+compilable = ci_env.compilable();
+if (ci_env.failing()) {
+const char* retry_message = ci_env.retry_message();
+if (_compilation_log != NULL) {
+_compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message);
+}
+if (PrintCompilation) {
+FormatBufferResource msg = retry_message != NULL ?
+err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) :
+err_msg_res("COMPILE SKIPPED: %s",      ci_env.failure_reason());
+task->print_compilation(tty, msg);
+}
+} else {
+task->mark_success();
+task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
+if (_compilation_log != NULL) {
+nmethod* code = task->code();
+if (code != NULL) {
+_compilation_log->log_nmethod(thread, code);
+}
+}
+}
+// simulate crash during compilation
+assert(task->compile_id() != CICrashAt, "just as planned");
+if (event.should_commit()) {
+event.set_method(target->get_Method());
+event.set_compileID(compile_id);
+event.set_compileLevel(task->comp_level());
+event.set_succeded(task->is_success());
+event.set_isOsr(is_osr);
+event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size());
+event.set_inlinedBytes(task->num_inlined_bytecodes());
+event.commit();
+}
+}
+pop_jni_handle_block();
+methodHandle method(thread, task->method());
+DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success());
+collect_statistics(thread, time, task);
+if (PrintCompilation && PrintCompilation2) {
+tty->print("%7d ", (int) tty->time_stamp().milliseconds());  // print timestamp
+tty->print("%4d ", compile_id);    // print compilation number
+tty->print("%s ", (is_osr ? "%" : " "));
+if (task->code() != NULL) {
+tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size());
+}
+tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes());
+}
+if (PrintCodeCacheOnCompilation)
+codecache_print(/* detailed= */ false);
+// Disable compilation, if required.
+switch (compilable) {
+case ciEnv::MethodCompilable_never:
+if (is_osr)
+method->set_not_osr_compilable_quietly();
+else
+method->set_not_compilable_quietly();
+break;
+case ciEnv::MethodCompilable_not_at_tier:
+if (is_osr)
+method->set_not_osr_compilable_quietly(task_level);
+else
+method->set_not_compilable_quietly(task_level);
+break;
+}
+// Note that the queued_for_compilation bits are cleared without
+// protection of a mutex. [They were set by the requester thread,
+// when adding the task to the complie queue -- at which time the
+// compile queue lock was held. Subsequently, we acquired the compile
+// queue lock to get this task off the compile queue; thus (to belabour
+// the point somewhat) our clearing of the bits must be occurring
+// only after the setting of the bits. See also 14012000 above.
+method->clear_queued_for_compilation();
+#ifdef ASSERT
+if (CollectedHeap::fired_fake_oom()) {
+// The current compile received a fake OOM during compilation so
+// go ahead and exit the VM since the test apparently succeeded
+tty->print_cr("*** Shutting down VM after successful fake OOM");
+vm_exit(0);
+}
+#endif
+}
+/**
+* The CodeCache is full.  Print out warning and disable compilation
+* or try code cache cleaning so compilation can continue later.
+*/
+void CompileBroker::handle_full_code_cache() {
+UseInterpreter = true;
+if (UseCompiler || AlwaysCompileLoopMethods ) {
+if (xtty != NULL) {
+ResourceMark rm;
+stringStream s;
+// Dump code cache state into a buffer before locking the tty,
+// because log_state() will use locks causing lock conflicts.
+CodeCache::log_state(&s);
+// Lock to prevent tearing
+ttyLocker ttyl;
+xtty->begin_elem("code_cache_full");
+xtty->print("%s", s.as_string());
+xtty->stamp();
+xtty->end_elem();
+}
+CodeCache::report_codemem_full();
+#ifndef PRODUCT
+if (CompileTheWorld || ExitOnFullCodeCache) {
+codecache_print(/* detailed= */ true);
+before_exit(JavaThread::current());
+exit_globals(); // will delete tty
+vm_direct_exit(CompileTheWorld ? 0 : 1);
+}
+#endif
+if (UseCodeCacheFlushing) {
+// Since code cache is full, immediately stop new compiles
+if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) {
+NMethodSweeper::log_sweep("disable_compiler");
+}
+// Switch to 'vm_state'. This ensures that possibly_sweep() can be called
+// without having to consider the state in which the current thread is.
+ThreadInVMfromUnknown in_vm;
+NMethodSweeper::possibly_sweep();
+} else {
+disable_compilation_forever();
+}
+// Print warning only once
+if (should_print_compiler_warning()) {
+warning("CodeCache is full. Compiler has been disabled.");
+warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
+codecache_print(/* detailed= */ true);
+}
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::set_last_compile
+//
+// Record this compilation for debugging purposes.
+void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
+ResourceMark rm;
+char* method_name = method->name()->as_C_string();
+strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
+_last_method_compiled[CompileBroker::name_buffer_length - 1] = '\0'; // ensure null terminated
+char current_method[CompilerCounters::cmname_buffer_length];
+size_t maxLen = CompilerCounters::cmname_buffer_length;
+if (UsePerfData) {
+const char* class_name = method->method_holder()->name()->as_C_string();
+size_t s1len = strlen(class_name);
+size_t s2len = strlen(method_name);
+// check if we need to truncate the string
+if (s1len + s2len + 2 > maxLen) {
+// the strategy is to lop off the leading characters of the
+// class name and the trailing characters of the method name.
+if (s2len + 2 > maxLen) {
+// lop of the entire class name string, let snprintf handle
+// truncation of the method name.
+class_name += s1len; // null string
+}
+else {
+// lop off the extra characters from the front of the class name
+class_name += ((s1len + s2len + 2) - maxLen);
+}
+}
+jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
+}
+if (CICountOSR && is_osr) {
+_last_compile_type = osr_compile;
+} else {
+_last_compile_type = normal_compile;
+}
+_last_compile_level = comp_level;
+if (UsePerfData) {
+CompilerCounters* counters = thread->counters();
+counters->set_current_method(current_method);
+counters->set_compile_type((jlong)_last_compile_type);
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::push_jni_handle_block
+//
+// Push on a new block of JNI handles.
+void CompileBroker::push_jni_handle_block() {
+JavaThread* thread = JavaThread::current();
+// Allocate a new block for JNI handles.
+// Inlined code from jni_PushLocalFrame()
+JNIHandleBlock* java_handles = thread->active_handles();
+JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
+assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
+compile_handles->set_pop_frame_link(java_handles);  // make sure java handles get gc'd.
+thread->set_active_handles(compile_handles);
+}
+// ------------------------------------------------------------------
+// CompileBroker::pop_jni_handle_block
+//
+// Pop off the current block of JNI handles.
+void CompileBroker::pop_jni_handle_block() {
+JavaThread* thread = JavaThread::current();
+// Release our JNI handle block
+JNIHandleBlock* compile_handles = thread->active_handles();
+JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
+thread->set_active_handles(java_handles);
+compile_handles->set_pop_frame_link(NULL);
+JNIHandleBlock::release_block(compile_handles, thread); // may block
+}
+// ------------------------------------------------------------------
+// CompileBroker::check_break_at
+//
+// Should the compilation break at the current compilation.
+bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
+if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
+return true;
+} else if( CompilerOracle::should_break_at(method) ) { // break when compiling
+return true;
+} else {
+return (compile_id == CIBreakAt);
+}
+}
+// ------------------------------------------------------------------
+// CompileBroker::collect_statistics
+//
+// Collect statistics about the compilation.
+void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
+bool success = task->is_success();
+methodHandle method (thread, task->method());
+uint compile_id = task->compile_id();
+bool is_osr = (task->osr_bci() != standard_entry_bci);
+nmethod* code = task->code();
+CompilerCounters* counters = thread->counters();
+assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
+MutexLocker locker(CompileStatistics_lock);
+// _perf variables are production performance counters which are
+// updated regardless of the setting of the CITime and CITimeEach flags
+//
+if (!success) {
+_total_bailout_count++;
+if (UsePerfData) {
+_perf_last_failed_method->set_value(counters->current_method());
+_perf_last_failed_type->set_value(counters->compile_type());
+_perf_total_bailout_count->inc();
+}
+} else if (code == NULL) {
+if (UsePerfData) {
+_perf_last_invalidated_method->set_value(counters->current_method());
+_perf_last_invalidated_type->set_value(counters->compile_type());
+_perf_total_invalidated_count->inc();
+}
+_total_invalidated_count++;
+} else {
+// Compilation succeeded
+// update compilation ticks - used by the implementation of
+// java.lang.management.CompilationMBean
+_perf_total_compilation->inc(time.ticks());
+_t_total_compilation.add(time);
+_peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time;
+if (CITime) {
+if (is_osr) {
+_t_osr_compilation.add(time);
+_sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
+} else {
+_t_standard_compilation.add(time);
+_sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
+}
+}
+if (UsePerfData) {
+// save the name of the last method compiled
+_perf_last_method->set_value(counters->current_method());
+_perf_last_compile_type->set_value(counters->compile_type());
+_perf_last_compile_size->set_value(method->code_size() +
+task->num_inlined_bytecodes());
+if (is_osr) {
+_perf_osr_compilation->inc(time.ticks());
+_perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
+} else {
+_perf_standard_compilation->inc(time.ticks());
+_perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
+}
+}
+if (CITimeEach) {
+float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
+tty->print_cr("%3d   seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
+compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
+}
+// Collect counts of successful compilations
+_sum_nmethod_size      += code->total_size();
+_sum_nmethod_code_size += code->insts_size();
+_total_compile_count++;
+if (UsePerfData) {
+_perf_sum_nmethod_size->inc(     code->total_size());
+_perf_sum_nmethod_code_size->inc(code->insts_size());
+_perf_total_compile_count->inc();
+}
+if (is_osr) {
+if (UsePerfData) _perf_total_osr_compile_count->inc();
+_total_osr_compile_count++;
+} else {
+if (UsePerfData) _perf_total_standard_compile_count->inc();
+_total_standard_compile_count++;
+}
+}
+// set the current method for the thread to null
+if (UsePerfData) counters->set_current_method("");
+}
+const char* CompileBroker::compiler_name(int comp_level) {
+AbstractCompiler *comp = CompileBroker::compiler(comp_level);
+if (comp == NULL) {
+return "no compiler";
+} else {
+return (comp->name());
+}
+}
+void CompileBroker::print_times() {
+tty->cr();
+tty->print_cr("Accumulated compiler times (for compiled methods only)");
+tty->print_cr("------------------------------------------------");
+//0000000000111111111122222222223333333333444444444455555555556666666666
+//0123456789012345678901234567890123456789012345678901234567890123456789
+tty->print_cr("  Total compilation time   : %6.3f s", CompileBroker::_t_total_compilation.seconds());
+tty->print_cr("    Standard compilation   : %6.3f s, Average : %2.3f",
+CompileBroker::_t_standard_compilation.seconds(),
+CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
+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);
+AbstractCompiler *comp = compiler(CompLevel_simple);
+if (comp != NULL) {
+comp->print_timers();
+}
+comp = compiler(CompLevel_full_optimization);
+if (comp != NULL) {
+comp->print_timers();
+}
+tty->cr();
+tty->print_cr("  Total compiled methods   : %6d methods", CompileBroker::_total_compile_count);
+tty->print_cr("    Standard compilation   : %6d methods", CompileBroker::_total_standard_compile_count);
+tty->print_cr("    On stack replacement   : %6d methods", CompileBroker::_total_osr_compile_count);
+int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
+tty->print_cr("  Total compiled bytecodes : %6d bytes", tcb);
+tty->print_cr("    Standard compilation   : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
+tty->print_cr("    On stack replacement   : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
+int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
+tty->print_cr("  Average compilation speed: %6d bytes/s", bps);
+tty->cr();
+tty->print_cr("  nmethod code size        : %6d bytes", CompileBroker::_sum_nmethod_code_size);
+tty->print_cr("  nmethod total size       : %6d bytes", CompileBroker::_sum_nmethod_size);
+}
+// Debugging output for failure
+void CompileBroker::print_last_compile() {
+if ( _last_compile_level != CompLevel_none &&
+compiler(_last_compile_level) != NULL &&
+_last_method_compiled != NULL &&
+_last_compile_type != no_compile) {
+if (_last_compile_type == osr_compile) {
+tty->print_cr("Last parse:  [osr]%d+++(%d) %s",
+_osr_compilation_id, _last_compile_level, _last_method_compiled);
+} else {
+tty->print_cr("Last parse:  %d+++(%d) %s",
+_compilation_id, _last_compile_level, _last_method_compiled);
+}
+}
+}
+void CompileBroker::print_compiler_threads_on(outputStream* st) {
+#ifndef PRODUCT
+st->print_cr("Compiler thread printing unimplemented.");
+st->cr();
+#endif
+}

Mercurial > jdk8-mips64-public > hotspot / file comparison

comparison: src/share/vm/compiler/compileBroker.cpp

src/share/vm/compiler/compileBroker.cpp