Mercurial > hg > truffle
view src/os/solaris/vm/osThread_solaris.hpp @ 20295:3f2894c5052e
8048112: G1 Full GC needs to support the case when the very first region is not available
Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett.
Reviewed-by: brutisso
author | tschatzl |
---|---|
date | Mon, 21 Jul 2014 10:00:31 +0200 |
parents | f2110083203d |
children |
line wrap: on
line source
/* * Copyright (c) 1997, 2013, 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. * */ #ifndef OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP #define OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP // This is embedded via include into the class OSThread public: typedef thread_t thread_id_t; private: uint _lwp_id; // lwp ID, only used with bound threads int _native_priority; // Saved native priority when starting // a bound thread sigset_t _caller_sigmask; // Caller's signal mask bool _vm_created_thread; // true if the VM created this thread, // false if primary thread or attached thread public: uint lwp_id() const { return _lwp_id; } int native_priority() const { return _native_priority; } // Set and get state of _vm_created_thread flag void set_vm_created() { _vm_created_thread = true; } bool is_vm_created() { return _vm_created_thread; } // Methods to save/restore caller's signal mask sigset_t caller_sigmask() const { return _caller_sigmask; } void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; } #ifndef PRODUCT // Used for debugging, return a unique integer for each thread. int thread_identifier() const { return _thread_id; } #endif #ifdef ASSERT // On solaris reposition can fail in two ways: // 1: a mismatched pc, because signal is delivered too late, target thread // is resumed. // 2: on a timeout where signal is lost, target thread is resumed. bool valid_reposition_failure() { // only 1 and 2 can happen and we can handle both of them return true; } #endif void set_lwp_id(uint id) { _lwp_id = id; } void set_native_priority(int prio) { _native_priority = prio; } // *************************************************************** // interrupt support. interrupts (using signals) are used to get // the thread context (get_thread_pc), to set the thread context // (set_thread_pc), and to implement java.lang.Thread.interrupt. // *************************************************************** public: os::SuspendResume sr; private: ucontext_t* _ucontext; public: ucontext_t* ucontext() const { return _ucontext; } void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; } static void SR_handler(Thread* thread, ucontext_t* uc); // *************************************************************** // java.lang.Thread.interrupt state. // *************************************************************** private: JavaThreadState _saved_interrupt_thread_state; // the thread state before a system call -- restored afterward public: JavaThreadState saved_interrupt_thread_state() { return _saved_interrupt_thread_state; } void set_saved_interrupt_thread_state(JavaThreadState state) { _saved_interrupt_thread_state = state; } static void handle_spinlock_contention(int tries); // Used for thread local eden locking // *************************************************************** // Platform dependent initialization and cleanup // *************************************************************** private: void pd_initialize(); void pd_destroy(); #endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP