1/*
2 * Copyright (c) 1997, 2017, 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 */
24
25#ifndef OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP
26#define OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP
27
28// This is embedded via include into the class OSThread
29 public:
30  typedef thread_t thread_id_t;
31
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; }
42
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; }
46
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; }
50
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; }
67
68 public:
69  os::SuspendResume sr;
70
71 private:
72  ucontext_t* _ucontext;
73
74 public:
75  ucontext_t* ucontext() const { return _ucontext; }
76  void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; }
77  static void SR_handler(Thread* thread, ucontext_t* uc);
78
79  // ***************************************************************
80  // Platform dependent initialization and cleanup
81  // ***************************************************************
82
83private:
84
85  void pd_initialize();
86  void pd_destroy();
87
88#endif // OS_SOLARIS_VM_OSTHREAD_SOLARIS_HPP
89