Mercurial > hg > graal-compiler
view src/os/solaris/vm/osThread_solaris.hpp @ 192:6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
Summary: Poke String.stringCacheEnabled during vm initialization
Reviewed-by: never
author | kvn |
---|---|
date | Fri, 13 Jun 2008 14:49:07 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 1997-2006 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. * */ // This is embedded via include into the class OSThread private: thread_t _thread_id; // Solaris thread id unsigned int _lwp_id; // lwp ID, only used with bound threads sigset_t _caller_sigmask; // Caller's signal mask bool _vm_created_thread; // true if the VM create this thread // false if primary thread or attached thread public: thread_t thread_id() const { return _thread_id; } unsigned int lwp_id() const { return _lwp_id; } // 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_thread_id(thread_t id) { _thread_id = id; } void set_lwp_id(unsigned int id){ _lwp_id = id; } // *************************************************************** // 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: class InterruptArguments : StackObj { private: Thread* _thread; // the thread to signal was dispatched to ucontext_t* _ucontext; // the machine context at the time of the signal public: InterruptArguments(Thread* thread, ucontext_t* ucontext) { _thread = thread; _ucontext = ucontext; } Thread* thread() const { return _thread; } ucontext_t* ucontext() const { return _ucontext; } }; // There are currently no asynchronous callbacks - and we'd better not // support them in the future either, as they need to be deallocated from // the interrupt handler, which is not safe; they also require locks to // protect the callback queue. class Sync_Interrupt_Callback : private StackObj { protected: volatile bool _is_done; Monitor* _sync; Thread* _target; public: Sync_Interrupt_Callback(Monitor * sync) { _is_done = false; _target = NULL; _sync = sync; } bool is_done() const { return _is_done; } Thread* target() const { return _target; } int interrupt(Thread * target, int timeout); // override to implement the callback. virtual void execute(InterruptArguments *args) = 0; void leave_callback(); }; private: Sync_Interrupt_Callback * volatile _current_callback; enum { callback_in_progress = 1 }; Mutex * _current_callback_lock; // only used on v8 public: int set_interrupt_callback (Sync_Interrupt_Callback * cb); void remove_interrupt_callback(Sync_Interrupt_Callback * cb); void OSThread::do_interrupt_callbacks_at_interrupt(InterruptArguments *args); // *************************************************************** // 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();