Jack2: JackWinMutex.cpp Source File

Jack2 1.9.12

JackWinMutex.cpp
1 /*
2 Copyright (C) 2004-2008 Grame
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17
18 */
19
20 #include "JackWinMutex.h"
21 #include "JackError.h"
22
23 namespace Jack
24 {
25
26 bool JackBaseWinMutex::Lock()
27 {
28 if (fOwner != GetCurrentThreadId()) {
29 DWORD res = WaitForSingleObject(fMutex, INFINITE);
30 if (res == WAIT_OBJECT_0) {
31 fOwner = GetCurrentThreadId();
32 return true;
33 } else {
34 jack_log("JackBaseWinMutex::Lock res = %d", res);
35 return false;
36 }
37 } else {
38 jack_error("JackBaseWinMutex::Lock mutex already locked by thread = %d", GetCurrentThreadId());
39 return false;
40 }
41 }
42
43 bool JackBaseWinMutex::Trylock()
44 {
45 if (fOwner != GetCurrentThreadId()) {
46 DWORD res = WaitForSingleObject(fMutex, 0);
47 if (res == WAIT_OBJECT_0) {
48 fOwner = GetCurrentThreadId();
49 return true;
50 } else {
51 jack_log("JackBaseWinMutex::Trylock res = %d", res);
52 return false;
53 }
54 } else {
55 jack_error("JackBaseWinMutex::Trylock mutex already locked by thread = %d", GetCurrentThreadId());
56 return false;
57 }
58 }
59
60 bool JackBaseWinMutex::Unlock()
61 {
62 if (fOwner == GetCurrentThreadId()) {
63 fOwner = 0;
64 int res = ReleaseMutex(fMutex);
65 if (res != 0) {
66 return true;
67 } else {
68 jack_log("JackBaseWinMutex::Unlock res = %d", res);
69 return false;
70 }
71 } else {
72 jack_error("JackBaseWinMutex::Unlock mutex not locked by thread = %d", GetCurrentThreadId());
73 return false;
74 }
75 }
76
77 bool JackWinMutex::Lock()
78 {
79 if (WAIT_OBJECT_0 == WaitForSingleObject(fMutex, INFINITE)) {
80 return true;
81 } else {
82 jack_log("JackWinProcessSync::Lock WaitForSingleObject err = %d", GetLastError());
83 return false;
84 }
85 }
86
87 bool JackWinMutex::Trylock()
88 {
89 if (WAIT_OBJECT_0 == WaitForSingleObject(fMutex, 0)) {
90 return true;
91 } else {
92 jack_log("JackWinProcessSync::Trylock WaitForSingleObject err = %d", GetLastError());
93 return false;
94 }
95 }
96
97 bool JackWinMutex::Unlock()
98 {
99 if (!ReleaseMutex(fMutex)) {
100 jack_log("JackWinProcessSync::Unlock ReleaseMutex err = %d", GetLastError());
101 return false;
102 } else {
103 return true;
104 }
105 }
106
107 bool JackWinCriticalSection::Lock()
108 {
109 EnterCriticalSection(&fSection);
110 return true;
111 }
112
113 bool JackWinCriticalSection::Trylock()
114 {
115 return (TryEnterCriticalSection(&fSection));
116 }
117
118 bool JackWinCriticalSection::Unlock()
119 {
120 LeaveCriticalSection(&fSection);
121 return true;
122 }
123
124 } // namespace
125
126
jack_log
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92