| /* |
| * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| #include "incls/_precompiled.incl" |
| #include "incls/_compileBroker.cpp.incl" |
| |
| #ifdef DTRACE_ENABLED |
| |
| // Only bother with this argument setup if dtrace is available |
| |
| 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(compiler, method) \ |
| { \ |
| char* comp_name = (char*)(compiler)->name(); \ |
| symbolOop klass_name = (method)->klass_name(); \ |
| symbolOop name = (method)->name(); \ |
| symbolOop 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(compiler, method, success) \ |
| { \ |
| char* comp_name = (char*)(compiler)->name(); \ |
| symbolOop klass_name = (method)->klass_name(); \ |
| symbolOop name = (method)->name(); \ |
| symbolOop 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 // ndef DTRACE_ENABLED |
| |
| #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) |
| #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) |
| |
| #endif // ndef DTRACE_ENABLED |
| |
| bool CompileBroker::_initialized = false; |
| volatile bool CompileBroker::_should_block = false; |
| |
| // The installed compiler(s) |
| AbstractCompiler* CompileBroker::_compilers[2]; |
| |
| // These counters are used for assigning id's to each compilation |
| uint CompileBroker::_compilation_id = 0; |
| uint 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; |
| |
| CompileQueue* CompileBroker::_method_queue = NULL; |
| CompileTask* CompileBroker::_task_free_list = NULL; |
| |
| GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; |
| |
| // CompileTaskWrapper |
| // |
| // Assign this task to the current thread. Deallocate the task |
| // when the compilation is complete. |
| class CompileTaskWrapper : StackObj { |
| public: |
| CompileTaskWrapper(CompileTask* task); |
| ~CompileTaskWrapper(); |
| }; |
| |
| 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); |
| DEBUG_ONLY(thread->set_env((ciEnv*)badAddress)); |
| 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 = JNIHandles::make_global(method); |
| _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_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 = JNIHandles::make_global(hot_method); |
| } |
| } |
| } |
| |
| _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"); |
| if (_hot_method != NULL && _hot_method != _method) { |
| JNIHandles::destroy_global(_hot_method); |
| } |
| JNIHandles::destroy_global(_method); |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileTask::print |
| void CompileTask::print() { |
| tty->print("<CompileTask compile_id=%d ", _compile_id); |
| tty->print("method="); |
| ((methodOop)JNIHandles::resolve(_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) { |
| methodOop method = (methodOop)JNIHandles::resolve(_method); |
| |
| // print compiler name |
| st->print("%s:", CompileBroker::compiler(comp_level())->name()); |
| |
| // print compilation number |
| st->print("%3d", compile_id()); |
| |
| // print method attributes |
| const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci; |
| { const char blocking_char = is_blocking() ? 'b' : ' '; |
| const char compile_type = is_osr ? '%' : ' '; |
| const char sync_char = method->is_synchronized() ? 's' : ' '; |
| const char exception_char = method->has_exception_handler() ? '!' : ' '; |
| const char tier_char = |
| is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level()); |
| st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char); |
| } |
| |
| // Use buf to get method name and signature |
| if (method != NULL) st->print("%s", method->name_and_sig_as_C_string(buf, buflen)); |
| |
| // print osr_bci if any |
| if (is_osr) st->print(" @ %d", osr_bci()); |
| |
| // print method size |
| st->print_cr(" (%d bytes)", method->code_size()); |
| } |
| |
| // ------------------------------------------------------------------ |
| // CompileTask::print_line |
| void CompileTask::print_line() { |
| Thread *thread = Thread::current(); |
| methodHandle method(thread, |
| (methodOop)JNIHandles::resolve(method_handle())); |
| ResourceMark rm(thread); |
| |
| ttyLocker ttyl; // keep the following output all in one block |
| |
| // print compiler name if requested |
| if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name()); |
| |
| // print compilation number |
| tty->print("%3d", compile_id()); |
| |
| // print method attributes |
| const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci; |
| { const char blocking_char = is_blocking() ? 'b' : ' '; |
| const char compile_type = is_osr ? '%' : ' '; |
| const char sync_char = method->is_synchronized() ? 's' : ' '; |
| const char exception_char = method->has_exception_handler() ? '!' : ' '; |
| const char tier_char = |
| is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level()); |
| tty->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char); |
| } |
| |
| // print method name |
| method->print_short_name(tty); |
| |
| // print osr_bci if any |
| if (is_osr) tty->print(" @ %d", osr_bci()); |
| |
| // print method size |
| tty->print_cr(" (%d bytes)", method->code_size()); |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileTask::log_task |
| void CompileTask::log_task(xmlStream* log) { |
| Thread* thread = Thread::current(); |
| methodHandle method(thread, |
| (methodOop)JNIHandles::resolve(method_handle())); |
| ResourceMark rm(thread); |
| |
| // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> |
| if (_compile_id != 0) 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, |
| (methodOop)JNIHandles::resolve(_hot_method)); |
| methodHandle method(thread, |
| (methodOop)JNIHandles::resolve(_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, |
| (methodOop)JNIHandles::resolve(method_handle())); |
| 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->instructions_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(); |
| } |
| |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileQueue::add |
| // |
| // Add a CompileTask to a CompileQueue |
| void CompileQueue::add(CompileTask* task) { |
| assert(lock()->owned_by_self(), "must own lock"); |
| |
| task->set_next(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); |
| _last = task; |
| } |
| |
| // Mark the method as being in the compile queue. |
| ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation(); |
| |
| if (CIPrintCompileQueue) { |
| print(); |
| } |
| |
| if (LogCompilation && xtty != NULL) { |
| task->log_task_queued(); |
| } |
| |
| // Notify CompilerThreads that a task is available. |
| lock()->notify(); |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileQueue::get |
| // |
| // Get the next CompileTask from a CompileQueue |
| CompileTask* CompileQueue::get() { |
| MutexLocker locker(lock()); |
| |
| // Wait for an available CompileTask. |
| while (_first == NULL) { |
| // There is no work to be done right now. Wait. |
| lock()->wait(); |
| } |
| |
| CompileTask* task = _first; |
| |
| // Update queue first and last |
| _first =_first->next(); |
| if (_first == NULL) { |
| _last = NULL; |
| } |
| |
| return task; |
| |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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'; |
| |
| // Set the interface to the current compiler(s). |
| #ifdef COMPILER1 |
| _compilers[0] = new Compiler(); |
| #ifndef COMPILER2 |
| _compilers[1] = _compilers[0]; |
| #endif |
| #endif // COMPILER1 |
| |
| #ifdef COMPILER2 |
| _compilers[1] = new C2Compiler(); |
| #ifndef COMPILER1 |
| _compilers[0] = _compilers[1]; |
| #endif |
| #endif // COMPILER2 |
| |
| // Initialize the CompileTask free list |
| _task_free_list = NULL; |
| |
| // Start the CompilerThreads |
| init_compiler_threads(compiler_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; |
| } |
| |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileBroker::make_compiler_thread |
| CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { |
| CompilerThread* compiler_thread = NULL; |
| |
| klassOop k = |
| SystemDictionary::resolve_or_fail(vmSymbolHandles::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, |
| vmSymbolHandles::object_initializer_name(), |
| vmSymbolHandles::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); |
| // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler |
| // threads never have their OS priority set. The assumption here is to |
| // enable the Performance group to do flag tuning, figure out a suitable |
| // CompilerThreadPriority, and then remove this 'if' statement (and |
| // comment) and unconditionally set the priority. |
| |
| // Compiler Threads should be at the highest Priority |
| if ( CompilerThreadPriority != -1 ) |
| os::set_native_priority( compiler_thread, CompilerThreadPriority ); |
| else |
| os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]); |
| |
| // Note that I cannot call os::set_priority because it expects Java |
| // priorities and I am *explicitly* using OS priorities so that it's |
| // possible to set the compiler thread priority higher than any Java |
| // thread. |
| |
| java_lang_Thread::set_daemon(thread_oop()); |
| |
| compiler_thread->set_threadObj(thread_oop()); |
| 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; |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileBroker::init_compiler_threads |
| // |
| // Initialize the compilation queue |
| void CompileBroker::init_compiler_threads(int compiler_count) { |
| EXCEPTION_MARK; |
| |
| _method_queue = new CompileQueue("MethodQueue", MethodCompileQueue_lock); |
| _method_threads = |
| new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true); |
| |
| char name_buffer[256]; |
| int i; |
| for (i = 0; i < compiler_count; i++) { |
| // Create a name for our thread. |
| sprintf(name_buffer, "CompilerThread%d", i); |
| CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
| |
| CompilerThread* new_thread = make_compiler_thread(name_buffer, _method_queue, counters, CHECK); |
| _method_threads->append(new_thread); |
| } |
| if (UsePerfData) { |
| PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, |
| compiler_count, CHECK); |
| } |
| } |
| |
| // ------------------------------------------------------------------ |
| // CompileBroker::is_idle |
| bool CompileBroker::is_idle() { |
| if (!_method_queue->is_empty()) { |
| return false; |
| } else { |
| int num_threads = _method_threads->length(); |
| for (int i=0; i<num_threads; i++) { |
| if (_method_threads->at(i)->task() != NULL) { |
| return false; |
| } |
| } |
| |
| // No pending or active compilations. |
| return true; |
| } |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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, |
| TRAPS) { |
| // do nothing if compiler thread(s) is not available |
| if (!_initialized ) { |
| return; |
| } |
| |
| guarantee(!method->is_abstract(), "cannot compile abstract methods"); |
| assert(method->method_holder()->klass_part()->oop_is_instance(), |
| "sanity check"); |
| assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), |
| "method holder must be initialized"); |
| |
| 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; |
| } |
| |
| // 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; |
| } |
| |
| // Outputs from the following MutexLocker block: |
| CompileTask* task = NULL; |
| bool blocking = false; |
| |
| // Acquire our lock. |
| { |
| MutexLocker locker(_method_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. |
| uint 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(_method_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, |
| methodHandle hot_method, int hot_count, |
| const char* comment, TRAPS) { |
| // make sure arguments make sense |
| assert(method->method_holder()->klass_part()->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(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized"); |
| |
| int comp_level = CompilationPolicy::policy()->compilation_level(method, osr_bci); |
| |
| #ifdef TIERED |
| if (TieredCompilation && StressTieredRuntime) { |
| static int flipper = 0; |
| if (is_even(flipper++)) { |
| comp_level = CompLevel_fast_compile; |
| } else { |
| comp_level = CompLevel_full_optimization; |
| } |
| } |
| #ifdef SPARC |
| // QQQ FIX ME |
| // C2 only returns long results in G1 and c1 doesn't understand so disallow c2 |
| // compiles of long results |
| if (TieredCompilation && method()->result_type() == T_LONG) { |
| comp_level = CompLevel_fast_compile; |
| } |
| #endif // SPARC |
| #endif // TIERED |
| |
| // return quickly if possible |
| |
| // lock, make sure that the compilation |
| // isn't prohibited in a straightforward way. |
| |
| if (compiler(comp_level) == NULL || 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 |
| #ifdef TIERED |
| && ( method_code->is_compiled_by_c2() || comp_level == CompLevel_fast_compile ) |
| #endif // TIERED |
| ) { |
| 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_full_optimization, |
| "all OSR compiles are assumed to be at a single compilation lavel"); |
| #endif // TIERED |
| nmethod* nm = method->lookup_osr_nmethod_for(osr_bci); |
| if (nm != NULL) return nm; |
| if (method->is_not_osr_compilable()) return NULL; |
| } |
| |
| assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); |
| // some prerequisites that are compiler specific |
| if (compiler(comp_level)->is_c2()) { |
| method->constants()->resolve_string_constants(CHECK_0); |
| // Resolve all classes seen in the signature of the method |
| // we are compiling. |
| methodOopDesc::load_signature_classes(method, CHECK_0); |
| } |
| |
| // 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()) { |
| 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) { |
| (void) AdapterHandlerLibrary::create_native_wrapper(method); |
| } else { |
| return NULL; |
| } |
| } else { |
| compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0); |
| } |
| |
| // return requested nmethod |
| return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci); |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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()) { |
| return true; |
| } else { |
| nmethod* result = method->lookup_osr_nmethod_for(osr_bci); |
| return (result != NULL); |
| } |
| } else { |
| if (method->is_not_compilable(comp_level)) { |
| return true; |
| } else { |
| nmethod* result = method->code(); |
| if (result == NULL) return false; |
| #ifdef TIERED |
| if (comp_level == CompLevel_fast_compile) { |
| // At worst the code is from c1 |
| return true; |
| } |
| // comp level must be full opt |
| return result->is_compiled_by_c2(); |
| #endif // TIERED |
| return true; |
| } |
| } |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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. |
| // QQQ this needs some work ought to only record not compilable at |
| // the specified level |
| if (is_native && |
| (!CICompileNatives || !compiler(comp_level)->supports_native())) { |
| method->set_not_compilable(); |
| return true; |
| } |
| |
| bool is_osr = (osr_bci != standard_entry_bci); |
| // Some compilers may not support on stack replacement. |
| if (is_osr && |
| (!CICompileOSR || !compiler(comp_level)->supports_osr())) { |
| method->set_not_osr_compilable(); |
| 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(); |
| } |
| |
| return false; |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileBroker::assign_compile_id |
| // |
| // Assign a serialized id number to this compilation request. If the |
| // number falls out of the allowed range, return a 0. OSR |
| // compilations may be numbered separately from regular compilations |
| // if certain debugging flags are used. |
| uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { |
| assert(_method_queue->lock()->owner() == JavaThread::current(), |
| "must hold the compilation queue lock"); |
| bool is_osr = (osr_bci != standard_entry_bci); |
| assert(!method->is_native(), "no longer compile natives"); |
| uint id; |
| if (CICountOSR && is_osr) { |
| id = ++_osr_compilation_id; |
| if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { |
| return id; |
| } |
| } else { |
| id = ++_compilation_id; |
| if ((uint)CIStart <= id && id < (uint)CIStop) { |
| return id; |
| } |
| } |
| |
| // Method was not in the appropriate compilation range. |
| method->set_not_compilable(); |
| return 0; |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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) { |
| 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, |
| (methodOop)JNIHandles::resolve(task->method_handle())); |
| { |
| 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); |
| } |
| |
| // ------------------------------------------------------------------ |
| // 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 thread='" UINTX_FORMAT "' process='%d'", |
| os::current_thread_id(), |
| os::current_process_id()); |
| log->stamp(); |
| log->end_elem(); |
| } |
| |
| while (true) { |
| { |
| // We need this HandleMark to avoid leaking VM handles. |
| HandleMark hm(thread); |
| if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
| // The CodeCache is full. Print out warning and disable compilation. |
| UseInterpreter = true; |
| if (UseCompiler || AlwaysCompileLoopMethods ) { |
| if (log != NULL) { |
| log->begin_elem("code_cache_full"); |
| log->stamp(); |
| log->end_elem(); |
| } |
| #ifndef PRODUCT |
| warning("CodeCache is full. Compiler has been disabled"); |
| if (CompileTheWorld || ExitOnFullCodeCache) { |
| before_exit(thread); |
| exit_globals(); // will delete tty |
| vm_direct_exit(CompileTheWorld ? 0 : 1); |
| } |
| #endif |
| UseCompiler = false; |
| AlwaysCompileLoopMethods = false; |
| } |
| } |
| |
| CompileTask* task = queue->get(); |
| |
| // 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, |
| (methodOop)JNIHandles::resolve(task->method_handle())); |
| |
| // Never compile a method if breakpoints are present in it |
| if (method()->number_of_breakpoints() == 0) { |
| // Compile the method. |
| if (UseCompiler || AlwaysCompileLoopMethods) { |
| #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(); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // CompileBroker::init_compiler_thread_log |
| // |
| // Set up state required by +LogCompilation. |
| void CompileBroker::init_compiler_thread_log() { |
| CompilerThread* thread = CompilerThread::current(); |
| char fileBuf[4*K]; |
| FILE* fp = NULL; |
| char* file = 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) dir = ""; |
| sprintf(fileBuf, "%shs_c" UINTX_FORMAT "_pid%u.log", |
| dir, thread_id, os::current_process_id()); |
| fp = fopen(fileBuf, "at"); |
| if (fp != NULL) { |
| file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1); |
| strcpy(file, fileBuf); |
| break; |
| } |
| } |
| if (fp == NULL) { |
| warning("Cannot open log file: %s", fileBuf); |
| } else { |
| if (LogCompilation && Verbose) |
| tty->print_cr("Opening compilation log %s", file); |
| CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id); |
| thread->init_log(log); |
| |
| if (xtty != NULL) { |
| ttyLocker ttyl; |
| |
| // Record any per thread log files |
| xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); |
| } |
| } |
| } |
| |
| // ------------------------------------------------------------------ |
| // 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", Thread::current()); |
| #endif |
| ThreadInVMfromNative tivfn(JavaThread::current()); |
| } |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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); |
| |
| // 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; |
| { |
| // 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, |
| (methodOop)JNIHandles::resolve(task->method_handle())); |
| 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->comp_level()); |
| |
| DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); |
| } |
| |
| // Allocate a new set of JNI handles. |
| push_jni_handle_block(); |
| jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle())); |
| 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. |
| |
| ciMethod* target = ci_env.get_method_from_handle(target_handle); |
| |
| TraceTime t1("compilation", &time); |
| |
| compiler(task->comp_level())->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"); |
| } |
| |
| if (ci_env.failing()) { |
| // Copy this bit to the enclosing block: |
| compilable = ci_env.compilable(); |
| if (PrintCompilation) { |
| const char* reason = ci_env.failure_reason(); |
| if (compilable == ciEnv::MethodCompilable_not_at_tier) { |
| if (is_highest_tier_compile(ci_env.comp_level())) { |
| // Already at highest tier, promote to not compilable. |
| compilable = ciEnv::MethodCompilable_never; |
| } else { |
| tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason); |
| } |
| } |
| |
| if (compilable == ciEnv::MethodCompilable_never) { |
| tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason); |
| } else if (compilable == ciEnv::MethodCompilable) { |
| tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason); |
| } |
| } |
| } else { |
| task->mark_success(); |
| task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); |
| } |
| } |
| pop_jni_handle_block(); |
| |
| methodHandle method(thread, |
| (methodOop)JNIHandles::resolve(task->method_handle())); |
| |
| DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); |
| |
| collect_statistics(thread, time, task); |
| |
| if (compilable == ciEnv::MethodCompilable_never) { |
| if (is_osr) { |
| method->set_not_osr_compilable(); |
| } else { |
| method->set_not_compilable(); |
| } |
| } else if (compilable == ciEnv::MethodCompilable_not_at_tier) { |
| method->set_not_compilable(task->comp_level()); |
| } |
| |
| // 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 |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // 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); |
| char current_method[CompilerCounters::cmname_buffer_length]; |
| size_t maxLen = CompilerCounters::cmname_buffer_length; |
| |
| if (UsePerfData) { |
| const char* class_name = method->method_holder()->klass_part()->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, (methodOop)JNIHandles::resolve(task->method_handle())); |
| 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()); |
| |
| if (CITime) { |
| _t_total_compilation.add(time); |
| 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->code_size(); |
| _total_compile_count++; |
| |
| if (UsePerfData) { |
| _perf_sum_nmethod_size->inc(code->total_size()); |
| _perf_sum_nmethod_code_size->inc(code->code_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(""); |
| } |
| |
| |
| |
| 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); |
| compiler(CompLevel_fast_compile)->print_timers(); |
| if (compiler(CompLevel_fast_compile) != compiler(CompLevel_highest_tier)) { |
| compiler(CompLevel_highest_tier)->print_timers(); |
| } |
| |
| tty->cr(); |
| 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 |
| } |
