445 lines
14 KiB
C++
445 lines
14 KiB
C++
/*
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* Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "compiler/compileTask.hpp"
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#include "compiler/compileLog.hpp"
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#include "compiler/compileBroker.hpp"
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#include "compiler/compilerDirectives.hpp"
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#include "memory/resourceArea.hpp"
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CompileTask* CompileTask::_task_free_list = NULL;
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#ifdef ASSERT
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int CompileTask::_num_allocated_tasks = 0;
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#endif
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/**
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* Allocate a CompileTask, from the free list if possible.
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*/
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CompileTask* CompileTask::allocate() {
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MutexLocker locker(CompileTaskAlloc_lock);
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CompileTask* task = NULL;
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if (_task_free_list != NULL) {
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task = _task_free_list;
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_task_free_list = task->next();
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task->set_next(NULL);
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} else {
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task = new CompileTask();
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DEBUG_ONLY(_num_allocated_tasks++;)
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assert (WhiteBoxAPI || JVMCI_ONLY(UseJVMCICompiler ||) _num_allocated_tasks < 10000, "Leaking compilation tasks?");
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task->set_next(NULL);
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task->set_is_free(true);
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}
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assert(task->is_free(), "Task must be free.");
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task->set_is_free(false);
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return task;
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}
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/**
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* Add a task to the free list.
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*/
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void CompileTask::free(CompileTask* task) {
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MutexLocker locker(CompileTaskAlloc_lock);
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if (!task->is_free()) {
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task->set_code(NULL);
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assert(!task->lock()->is_locked(), "Should not be locked when freed");
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JNIHandles::destroy_global(task->_method_holder);
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JNIHandles::destroy_global(task->_hot_method_holder);
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task->set_is_free(true);
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task->set_next(_task_free_list);
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_task_free_list = task;
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}
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}
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void CompileTask::initialize(int compile_id,
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const methodHandle& method,
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int osr_bci,
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int comp_level,
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const methodHandle& hot_method,
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int hot_count,
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CompileTask::CompileReason compile_reason,
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bool is_blocking) {
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assert(!_lock->is_locked(), "bad locking");
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_compile_id = compile_id;
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_method = method();
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_method_holder = JNIHandles::make_global(method->method_holder()->klass_holder());
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_osr_bci = osr_bci;
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_is_blocking = is_blocking;
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JVMCI_ONLY(_has_waiter = CompileBroker::compiler(comp_level)->is_jvmci();)
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JVMCI_ONLY(_jvmci_compiler_thread = NULL;)
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_comp_level = comp_level;
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_num_inlined_bytecodes = 0;
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_is_complete = false;
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_is_success = false;
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_code_handle = NULL;
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_hot_method = NULL;
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_hot_method_holder = NULL;
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_hot_count = hot_count;
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_time_queued = 0; // tidy
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_compile_reason = compile_reason;
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_failure_reason = NULL;
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if (LogCompilation) {
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_time_queued = os::elapsed_counter();
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if (hot_method.not_null()) {
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if (hot_method == method) {
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_hot_method = _method;
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} else {
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_hot_method = hot_method();
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// only add loader or mirror if different from _method_holder
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_hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder());
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}
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}
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}
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_next = NULL;
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}
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/**
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* Returns the compiler for this task.
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*/
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AbstractCompiler* CompileTask::compiler() {
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return CompileBroker::compiler(_comp_level);
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}
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// ------------------------------------------------------------------
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// CompileTask::code/set_code
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//
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nmethod* CompileTask::code() const {
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if (_code_handle == NULL) return NULL;
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CodeBlob *blob = _code_handle->code();
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if (blob != NULL) {
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return blob->as_nmethod();
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}
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return NULL;
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}
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void CompileTask::set_code(nmethod* nm) {
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if (_code_handle == NULL && nm == NULL) return;
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guarantee(_code_handle != NULL, "");
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_code_handle->set_code(nm);
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if (nm == NULL) _code_handle = NULL; // drop the handle also
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}
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void CompileTask::mark_on_stack() {
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// Mark these methods as something redefine classes cannot remove.
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_method->set_on_stack(true);
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if (_hot_method != NULL) {
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_hot_method->set_on_stack(true);
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}
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}
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// RedefineClasses support
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void CompileTask::metadata_do(void f(Metadata*)) {
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f(method());
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if (hot_method() != NULL && hot_method() != method()) {
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f(hot_method());
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}
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}
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// ------------------------------------------------------------------
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// CompileTask::print_line_on_error
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//
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// This function is called by fatal error handler when the thread
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// causing troubles is a compiler thread.
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//
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// Do not grab any lock, do not allocate memory.
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//
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// Otherwise it's the same as CompileTask::print_line()
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//
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void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
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// print compiler name
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st->print("%s:", CompileBroker::compiler_name(comp_level()));
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print(st);
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}
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// ------------------------------------------------------------------
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// CompileTask::print_tty
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void CompileTask::print_tty() {
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ttyLocker ttyl; // keep the following output all in one block
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// print compiler name if requested
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if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level()));
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print(tty);
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}
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// ------------------------------------------------------------------
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// CompileTask::print_impl
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void CompileTask::print_impl(outputStream* st, Method* method, int compile_id, int comp_level,
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bool is_osr_method, int osr_bci, bool is_blocking,
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const char* msg, bool short_form, bool cr) {
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if (!short_form) {
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st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
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}
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// print compiler name if requested
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if (CIPrintCompilerName) {
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st->print("%s:", CompileBroker::compiler_name(comp_level));
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}
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st->print("%4d ", compile_id); // print compilation number
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// For unloaded methods the transition to zombie occurs after the
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// method is cleared so it's impossible to report accurate
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// information for that case.
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bool is_synchronized = false;
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bool has_exception_handler = false;
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bool is_native = false;
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if (method != NULL) {
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is_synchronized = method->is_synchronized();
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has_exception_handler = method->has_exception_handler();
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is_native = method->is_native();
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}
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// method attributes
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const char compile_type = is_osr_method ? '%' : ' ';
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const char sync_char = is_synchronized ? 's' : ' ';
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const char exception_char = has_exception_handler ? '!' : ' ';
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const char blocking_char = is_blocking ? 'b' : ' ';
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const char native_char = is_native ? 'n' : ' ';
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// print method attributes
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st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
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if (TieredCompilation) {
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if (comp_level != -1) st->print("%d ", comp_level);
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else st->print("- ");
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}
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st->print(" "); // more indent
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if (method == NULL) {
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st->print("(method)");
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} else {
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method->print_short_name(st);
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if (is_osr_method) {
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st->print(" @ %d", osr_bci);
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}
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if (method->is_native())
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st->print(" (native)");
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else
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st->print(" (%d bytes)", method->code_size());
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}
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if (msg != NULL) {
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st->print(" %s", msg);
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}
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if (cr) {
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st->cr();
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}
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}
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void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
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// 1234567
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st->print(" "); // print timestamp
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// 1234
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st->print(" "); // print compilation number
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// %s!bn
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st->print(" "); // print method attributes
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if (TieredCompilation) {
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st->print(" ");
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}
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st->print(" "); // more indent
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st->print(" "); // initial inlining indent
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for (int i = 0; i < inline_level; i++) st->print(" ");
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}
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// ------------------------------------------------------------------
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// CompileTask::print_compilation
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void CompileTask::print(outputStream* st, const char* msg, bool short_form, bool cr) {
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bool is_osr_method = osr_bci() != InvocationEntryBci;
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print_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form, cr);
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task
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void CompileTask::log_task(xmlStream* log) {
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Thread* thread = Thread::current();
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methodHandle method(thread, this->method());
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ResourceMark rm(thread);
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// <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
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log->print(" compile_id='%d'", _compile_id);
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if (_osr_bci != CompileBroker::standard_entry_bci) {
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log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
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} // else compile_kind='c2c'
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if (!method.is_null()) log->method(method);
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if (_osr_bci != CompileBroker::standard_entry_bci) {
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log->print(" osr_bci='%d'", _osr_bci);
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}
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// Always print the level in tiered.
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if (_comp_level != CompLevel_highest_tier || TieredCompilation) {
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log->print(" level='%d'", _comp_level);
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}
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if (_is_blocking) {
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log->print(" blocking='1'");
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}
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log->stamp();
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task_queued
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void CompileTask::log_task_queued() {
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Thread* thread = Thread::current();
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ttyLocker ttyl;
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ResourceMark rm(thread);
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xtty->begin_elem("task_queued");
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log_task(xtty);
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assert(_compile_reason > CompileTask::Reason_None && _compile_reason < CompileTask::Reason_Count, "Valid values");
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xtty->print(" comment='%s'", reason_name(_compile_reason));
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if (_hot_method != NULL) {
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methodHandle hot(thread, _hot_method);
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methodHandle method(thread, _method);
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if (hot() != method()) {
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xtty->method(hot);
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}
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}
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if (_hot_count != 0) {
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xtty->print(" hot_count='%d'", _hot_count);
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}
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xtty->end_elem();
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task_dequeued
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void CompileTask::log_task_dequeued(const char* comment) {
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if (LogCompilation && xtty != NULL) {
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Thread* thread = Thread::current();
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ttyLocker ttyl;
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ResourceMark rm(thread);
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xtty->begin_elem("task_dequeued");
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log_task(xtty);
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if (comment != NULL) {
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xtty->print(" comment='%s'", comment);
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}
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xtty->end_elem();
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}
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task_start
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void CompileTask::log_task_start(CompileLog* log) {
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log->begin_head("task");
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log_task(log);
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log->end_head();
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}
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// ------------------------------------------------------------------
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// CompileTask::log_task_done
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void CompileTask::log_task_done(CompileLog* log) {
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Thread* thread = Thread::current();
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methodHandle method(thread, this->method());
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ResourceMark rm(thread);
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if (!_is_success) {
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const char* reason = _failure_reason != NULL ? _failure_reason : "unknown";
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log->elem("failure reason='%s'", reason);
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}
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// <task_done ... stamp='1.234'> </task>
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nmethod* nm = code();
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log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
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_is_success, nm == NULL ? 0 : nm->content_size(),
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method->invocation_count());
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int bec = method->backedge_count();
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if (bec != 0) log->print(" backedge_count='%d'", bec);
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// Note: "_is_complete" is about to be set, but is not.
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if (_num_inlined_bytecodes != 0) {
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log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
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}
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log->stamp();
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log->end_elem();
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log->clear_identities(); // next task will have different CI
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log->tail("task");
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if (log->unflushed_count() > 2000) {
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log->flush();
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}
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log->mark_file_end();
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}
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// ------------------------------------------------------------------
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// CompileTask::check_break_at_flags
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bool CompileTask::check_break_at_flags() {
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int compile_id = this->_compile_id;
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bool is_osr = (_osr_bci != CompileBroker::standard_entry_bci);
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if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
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return true;
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} else {
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return (compile_id == CIBreakAt);
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}
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}
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// ------------------------------------------------------------------
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// CompileTask::print_inlining
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void CompileTask::print_inlining_inner(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
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// 1234567
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st->print(" "); // print timestamp
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// 1234
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st->print(" "); // print compilation number
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// method attributes
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if (method->is_loaded()) {
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const char sync_char = method->is_synchronized() ? 's' : ' ';
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const char exception_char = method->has_exception_handlers() ? '!' : ' ';
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const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
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// print method attributes
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st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
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} else {
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// %s!bn
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st->print(" "); // print method attributes
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}
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if (TieredCompilation) {
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st->print(" ");
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}
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st->print(" "); // more indent
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st->print(" "); // initial inlining indent
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for (int i = 0; i < inline_level; i++) st->print(" ");
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st->print("@ %d ", bci); // print bci
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method->print_short_name(st);
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if (method->is_loaded())
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st->print(" (%d bytes)", method->code_size());
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else
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st->print(" (not loaded)");
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if (msg != NULL) {
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st->print(" %s", msg);
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}
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st->cr();
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}
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