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jack2/windows/JackWinMutex.cpp at develop · jackaudio/jack2 · GitHub
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JackWinMutex.cpp
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/*
Copyright (C) 2004-2008 Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#
include
"
JackWinMutex.h
"
#
include
"
JackError.h
"
namespace
Jack
{
bool
JackBaseWinMutex::Lock
()
{
if
(
fOwner
!=
GetCurrentThreadId
()) {
DWORD
res =
WaitForSingleObject
(
fMutex
,
INFINITE
);
if
(res ==
WAIT_OBJECT_0
) {
fOwner
=
GetCurrentThreadId
();
return
true
;
}
else
{
jack_log
(
"
JackBaseWinMutex::Lock res = %d
"
, res);
return
false
;
}
}
else
{
jack_error
(
"
JackBaseWinMutex::Lock mutex already locked by thread = %d
"
,
GetCurrentThreadId
());
return
false
;
}
}
bool
JackBaseWinMutex::Trylock
()
{
if
(
fOwner
!=
GetCurrentThreadId
()) {
DWORD
res =
WaitForSingleObject
(
fMutex
,
0
);
if
(res ==
WAIT_OBJECT_0
) {
fOwner
=
GetCurrentThreadId
();
return
true
;
}
else
{
jack_log
(
"
JackBaseWinMutex::Trylock res = %d
"
, res);
return
false
;
}
}
else
{
jack_error
(
"
JackBaseWinMutex::Trylock mutex already locked by thread = %d
"
,
GetCurrentThreadId
());
return
false
;
}
}
bool
JackBaseWinMutex::Unlock
()
{
if
(
fOwner
==
GetCurrentThreadId
()) {
fOwner
=
0
;
int
res =
ReleaseMutex
(
fMutex
);
if
(res !=
0
) {
return
true
;
}
else
{
jack_log
(
"
JackBaseWinMutex::Unlock res = %d
"
, res);
return
false
;
}
}
else
{
jack_error
(
"
JackBaseWinMutex::Unlock mutex not locked by thread = %d
"
,
GetCurrentThreadId
());
return
false
;
}
}
bool
JackWinMutex::Lock
()
{
if
(
WAIT_OBJECT_0
==
WaitForSingleObject
(
fMutex
,
INFINITE
)) {
return
true
;
}
else
{
jack_log
(
"
JackWinProcessSync::Lock WaitForSingleObject err = %d
"
,
GetLastError
());
return
false
;
}
}
bool
JackWinMutex::Trylock
()
{
if
(
WAIT_OBJECT_0
==
WaitForSingleObject
(
fMutex
,
0
)) {
return
true
;
}
else
{
jack_log
(
"
JackWinProcessSync::Trylock WaitForSingleObject err = %d
"
,
GetLastError
());
return
false
;
}
}
bool
JackWinMutex::Unlock
()
{
if
(!
ReleaseMutex
(
fMutex
)) {
jack_log
(
"
JackWinProcessSync::Unlock ReleaseMutex err = %d
"
,
GetLastError
());
return
false
;
}
else
{
return
true
;
}
}
bool
JackWinCriticalSection::Lock
()
{
EnterCriticalSection
(&
fSection
);
return
true
;
}
bool
JackWinCriticalSection::Trylock
()
{
return
(
TryEnterCriticalSection
(&
fSection
));
}
bool
JackWinCriticalSection::Unlock
()
{
LeaveCriticalSection
(&
fSection
);
return
true
;
}
}
//
namespace
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