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view src/os/solaris/vm/osThread_solaris.hpp @ 5520:e05bb6f6c58b
Merge
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 08 Jun 2012 15:17:43 +0200 |
parents | de268c8a8075 |
children | 0105f367a14c |
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/* * Copyright (c) 1997, 2012, 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 private: thread_t _thread_id; // Solaris thread id 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: thread_t thread_id() const { return _thread_id; } 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_thread_id(thread_t id) { _thread_id = id; } 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: 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 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(); #endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP