| /* |
| * 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 |
| 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: |
| |
| 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 |