Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp @ 19605:15ef24874df7
Add assertion to ObjectValue conversion
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Wed, 25 Feb 2015 19:13:16 -0800 |
parents | 52b4284cb496 |
children |
line wrap: on
line source
/* * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "gc_implementation/parallelScavenge/gcTaskManager.hpp" #include "gc_implementation/parallelScavenge/gcTaskThread.hpp" #include "memory/allocation.hpp" #include "memory/allocation.inline.hpp" #include "memory/resourceArea.hpp" #include "runtime/handles.hpp" #include "runtime/handles.inline.hpp" #include "runtime/os.hpp" #include "runtime/thread.hpp" PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC GCTaskThread::GCTaskThread(GCTaskManager* manager, uint which, uint processor_id) : _manager(manager), _processor_id(processor_id), _time_stamps(NULL), _time_stamp_index(0) { if (!os::create_thread(this, os::pgc_thread)) vm_exit_out_of_memory(0, OOM_MALLOC_ERROR, "Cannot create GC thread. Out of system resources."); if (PrintGCTaskTimeStamps) { _time_stamps = NEW_C_HEAP_ARRAY(GCTaskTimeStamp, GCTaskTimeStampEntries, mtGC); guarantee(_time_stamps != NULL, "Sanity"); } set_id(which); set_name("GC task thread#%d (ParallelGC)", which); } GCTaskThread::~GCTaskThread() { if (_time_stamps != NULL) { FREE_C_HEAP_ARRAY(GCTaskTimeStamp, _time_stamps, mtGC); } } void GCTaskThread::start() { os::start_thread(this); } GCTaskTimeStamp* GCTaskThread::time_stamp_at(uint index) { guarantee(index < GCTaskTimeStampEntries, "increase GCTaskTimeStampEntries"); return &(_time_stamps[index]); } void GCTaskThread::print_task_time_stamps() { assert(PrintGCTaskTimeStamps, "Sanity"); assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)"); tty->print_cr("GC-Thread %u entries: %d", id(), _time_stamp_index); for(uint i=0; i<_time_stamp_index; i++) { GCTaskTimeStamp* time_stamp = time_stamp_at(i); tty->print_cr("\t[ %s " INT64_FORMAT " " INT64_FORMAT " ]", time_stamp->name(), time_stamp->entry_time(), time_stamp->exit_time()); } // Reset after dumping the data _time_stamp_index = 0; } void GCTaskThread::print_on(outputStream* st) const { st->print("\"%s\" ", name()); Thread::print_on(st); st->cr(); } // GC workers get tasks from the GCTaskManager and execute // them in this method. If there are no tasks to execute, // the GC workers wait in the GCTaskManager's get_task() // for tasks to be enqueued for execution. void GCTaskThread::run() { // Set up the thread for stack overflow support this->record_stack_base_and_size(); this->initialize_thread_local_storage(); // Bind yourself to your processor. if (processor_id() != GCTaskManager::sentinel_worker()) { if (TraceGCTaskThread) { tty->print_cr("GCTaskThread::run: " " binding to processor %u", processor_id()); } if (!os::bind_to_processor(processor_id())) { DEBUG_ONLY( warning("Couldn't bind GCTaskThread %u to processor %u", which(), processor_id()); ) } } // Part of thread setup. // ??? Are these set up once here to make subsequent ones fast? HandleMark hm_outer; ResourceMark rm_outer; TimeStamp timer; for (;/* ever */;) { // These are so we can flush the resources allocated in the inner loop. HandleMark hm_inner; ResourceMark rm_inner; for (; /* break */; ) { // This will block until there is a task to be gotten. GCTask* task = manager()->get_task(which()); // Record if this is an idle task for later use. bool is_idle_task = task->is_idle_task(); // In case the update is costly if (PrintGCTaskTimeStamps) { timer.update(); } jlong entry_time = timer.ticks(); char* name = task->name(); // If this is the barrier task, it can be destroyed // by the GC task manager once the do_it() executes. task->do_it(manager(), which()); // Use the saved value of is_idle_task because references // using "task" are not reliable for the barrier task. if (!is_idle_task) { manager()->note_completion(which()); if (PrintGCTaskTimeStamps) { assert(_time_stamps != NULL, "Sanity (PrintGCTaskTimeStamps set late?)"); timer.update(); GCTaskTimeStamp* time_stamp = time_stamp_at(_time_stamp_index++); time_stamp->set_name(name); time_stamp->set_entry_time(entry_time); time_stamp->set_exit_time(timer.ticks()); } } else { // idle tasks complete outside the normal accounting // so that a task can complete without waiting for idle tasks. // They have to be terminated separately. IdleGCTask::destroy((IdleGCTask*)task); set_is_working(true); } // Check if we should release our inner resources. if (manager()->should_release_resources(which())) { manager()->note_release(which()); break; } } } }