Tue, 06 Mar 2012 12:36:59 +0100
7160570: Intrinsification support for tracing framework
Reviewed-by: sla, never
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP
26 #define OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP
28 // This is embedded via include into the class OSThread
30 private:
31 thread_t _thread_id; // Solaris thread id
32 uint _lwp_id; // lwp ID, only used with bound threads
33 int _native_priority; // Saved native priority when starting
34 // a bound thread
35 sigset_t _caller_sigmask; // Caller's signal mask
36 bool _vm_created_thread; // true if the VM created this thread,
37 // false if primary thread or attached thread
38 public:
39 static size_t thread_id_size() { return sizeof(thread_t); }
40 thread_t thread_id() const { return _thread_id; }
41 uint lwp_id() const { return _lwp_id; }
42 int native_priority() const { return _native_priority; }
44 // Set and get state of _vm_created_thread flag
45 void set_vm_created() { _vm_created_thread = true; }
46 bool is_vm_created() { return _vm_created_thread; }
48 // Methods to save/restore caller's signal mask
49 sigset_t caller_sigmask() const { return _caller_sigmask; }
50 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
52 #ifndef PRODUCT
53 // Used for debugging, return a unique integer for each thread.
54 int thread_identifier() const { return _thread_id; }
55 #endif
56 #ifdef ASSERT
57 // On solaris reposition can fail in two ways:
58 // 1: a mismatched pc, because signal is delivered too late, target thread
59 // is resumed.
60 // 2: on a timeout where signal is lost, target thread is resumed.
61 bool valid_reposition_failure() {
62 // only 1 and 2 can happen and we can handle both of them
63 return true;
64 }
65 #endif
66 void set_thread_id(thread_t id) { _thread_id = id; }
67 void set_lwp_id(uint id) { _lwp_id = id; }
68 void set_native_priority(int prio) { _native_priority = prio; }
70 // ***************************************************************
71 // interrupt support. interrupts (using signals) are used to get
72 // the thread context (get_thread_pc), to set the thread context
73 // (set_thread_pc), and to implement java.lang.Thread.interrupt.
74 // ***************************************************************
76 public:
78 class InterruptArguments : StackObj {
79 private:
80 Thread* _thread; // the thread to signal was dispatched to
81 ucontext_t* _ucontext; // the machine context at the time of the signal
83 public:
84 InterruptArguments(Thread* thread, ucontext_t* ucontext) {
85 _thread = thread;
86 _ucontext = ucontext;
87 }
89 Thread* thread() const { return _thread; }
90 ucontext_t* ucontext() const { return _ucontext; }
91 };
93 // There are currently no asynchronous callbacks - and we'd better not
94 // support them in the future either, as they need to be deallocated from
95 // the interrupt handler, which is not safe; they also require locks to
96 // protect the callback queue.
98 class Sync_Interrupt_Callback : private StackObj {
99 protected:
100 volatile bool _is_done;
101 Monitor* _sync;
102 Thread* _target;
103 public:
104 Sync_Interrupt_Callback(Monitor * sync) {
105 _is_done = false; _target = NULL; _sync = sync;
106 }
108 bool is_done() const { return _is_done; }
109 Thread* target() const { return _target; }
111 int interrupt(Thread * target, int timeout);
113 // override to implement the callback.
114 virtual void execute(InterruptArguments *args) = 0;
116 void leave_callback();
117 };
119 private:
121 Sync_Interrupt_Callback * volatile _current_callback;
122 enum {
123 callback_in_progress = 1
124 };
125 Mutex * _current_callback_lock; // only used on v8
127 public:
129 int set_interrupt_callback (Sync_Interrupt_Callback * cb);
130 void remove_interrupt_callback(Sync_Interrupt_Callback * cb);
131 void do_interrupt_callbacks_at_interrupt(InterruptArguments *args);
133 // ***************************************************************
134 // java.lang.Thread.interrupt state.
135 // ***************************************************************
137 private:
139 JavaThreadState _saved_interrupt_thread_state; // the thread state before a system call -- restored afterward
141 public:
144 JavaThreadState saved_interrupt_thread_state() { return _saved_interrupt_thread_state; }
145 void set_saved_interrupt_thread_state(JavaThreadState state) { _saved_interrupt_thread_state = state; }
147 static void handle_spinlock_contention(int tries); // Used for thread local eden locking
149 // ***************************************************************
150 // Platform dependent initialization and cleanup
151 // ***************************************************************
153 private:
155 void pd_initialize();
156 void pd_destroy();
158 #endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP