Thu, 04 Apr 2013 10:01:26 -0700
8003310: Enable -Wunused-function when compiling with gcc
Summary: Add the -Wunused-function flag and remove a number of unused functions.
Reviewed-by: dholmes, coleenp, kvn
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
29 public:
30 typedef thread_t thread_id_t;
32 private:
33 uint _lwp_id; // lwp ID, only used with bound threads
34 int _native_priority; // Saved native priority when starting
35 // a bound thread
36 sigset_t _caller_sigmask; // Caller's signal mask
37 bool _vm_created_thread; // true if the VM created this thread,
38 // false if primary thread or attached thread
39 public:
40 uint lwp_id() const { return _lwp_id; }
41 int native_priority() const { return _native_priority; }
43 // Set and get state of _vm_created_thread flag
44 void set_vm_created() { _vm_created_thread = true; }
45 bool is_vm_created() { return _vm_created_thread; }
47 // Methods to save/restore caller's signal mask
48 sigset_t caller_sigmask() const { return _caller_sigmask; }
49 void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
51 #ifndef PRODUCT
52 // Used for debugging, return a unique integer for each thread.
53 int thread_identifier() const { return _thread_id; }
54 #endif
55 #ifdef ASSERT
56 // On solaris reposition can fail in two ways:
57 // 1: a mismatched pc, because signal is delivered too late, target thread
58 // is resumed.
59 // 2: on a timeout where signal is lost, target thread is resumed.
60 bool valid_reposition_failure() {
61 // only 1 and 2 can happen and we can handle both of them
62 return true;
63 }
64 #endif
65 void set_lwp_id(uint id) { _lwp_id = id; }
66 void set_native_priority(int prio) { _native_priority = prio; }
68 // ***************************************************************
69 // interrupt support. interrupts (using signals) are used to get
70 // the thread context (get_thread_pc), to set the thread context
71 // (set_thread_pc), and to implement java.lang.Thread.interrupt.
72 // ***************************************************************
74 public:
76 class InterruptArguments : StackObj {
77 private:
78 Thread* _thread; // the thread to signal was dispatched to
79 ucontext_t* _ucontext; // the machine context at the time of the signal
81 public:
82 InterruptArguments(Thread* thread, ucontext_t* ucontext) {
83 _thread = thread;
84 _ucontext = ucontext;
85 }
87 Thread* thread() const { return _thread; }
88 ucontext_t* ucontext() const { return _ucontext; }
89 };
91 // There are currently no asynchronous callbacks - and we'd better not
92 // support them in the future either, as they need to be deallocated from
93 // the interrupt handler, which is not safe; they also require locks to
94 // protect the callback queue.
96 class Sync_Interrupt_Callback : private StackObj {
97 protected:
98 volatile bool _is_done;
99 Monitor* _sync;
100 Thread* _target;
101 public:
102 Sync_Interrupt_Callback(Monitor * sync) {
103 _is_done = false; _target = NULL; _sync = sync;
104 }
106 bool is_done() const { return _is_done; }
107 Thread* target() const { return _target; }
109 int interrupt(Thread * target, int timeout);
111 // override to implement the callback.
112 virtual void execute(InterruptArguments *args) = 0;
114 void leave_callback();
115 };
117 private:
119 Sync_Interrupt_Callback * volatile _current_callback;
120 enum {
121 callback_in_progress = 1
122 };
123 Mutex * _current_callback_lock; // only used on v8
125 public:
127 int set_interrupt_callback (Sync_Interrupt_Callback * cb);
128 void remove_interrupt_callback(Sync_Interrupt_Callback * cb);
129 void do_interrupt_callbacks_at_interrupt(InterruptArguments *args);
131 // ***************************************************************
132 // java.lang.Thread.interrupt state.
133 // ***************************************************************
135 private:
137 JavaThreadState _saved_interrupt_thread_state; // the thread state before a system call -- restored afterward
139 public:
142 JavaThreadState saved_interrupt_thread_state() { return _saved_interrupt_thread_state; }
143 void set_saved_interrupt_thread_state(JavaThreadState state) { _saved_interrupt_thread_state = state; }
145 static void handle_spinlock_contention(int tries); // Used for thread local eden locking
147 // ***************************************************************
148 // Platform dependent initialization and cleanup
149 // ***************************************************************
151 private:
153 void pd_initialize();
154 void pd_destroy();
156 #endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP