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trunk/branch integration: Event & Mutex

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This commit is contained in:
Marian Krivos
2011-08-23 06:55:34 +00:00
parent 05041e2689
commit d6136d3088
6 changed files with 118 additions and 82 deletions
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76
Foundation/src/Mutex_POSIX.cpp
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@@ -1,7 +1,7 @@
//
// Mutex_POSIX.cpp
//
// $Id: //poco/svn/Foundation/src/Mutex_POSIX.cpp#3 $
// $Id: //poco/1.4/Foundation/src/Mutex_POSIX.cpp#4 $
//
// Library: Foundation
// Package: Threading
@@ -40,6 +40,10 @@
#include <sys/select.h>
#endif
#include <unistd.h>
#if defined(POCO_VXWORKS)
#include <timers.h>
#include <cstring>
#else
#include <sys/time.h>
@@ -57,14 +61,21 @@ namespace Poco {
MutexImpl::MutexImpl()
{
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
#if defined(PTHREAD_MUTEX_RECURSIVE_NP)
pthread_mutexattr_settype_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
#else
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
#if defined(POCO_VXWORKS)
// This workaround is for VxWorks 5.x where
// pthread_mutex_init() won't properly initialize the mutex
// resulting in a subsequent freeze in pthread_mutex_destroy()
// if the mutex has never been used.
std::memset(&_mutex, 0, sizeof(_mutex));
#endif
if (pthread_mutex_init(&_mutex, &attr))
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
#if defined(PTHREAD_MUTEX_RECURSIVE_NP)
pthread_mutexattr_settype_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
#elif !defined(POCO_VXWORKS)
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
#endif
if (pthread_mutex_init(&_mutex, &attr))
{
pthread_mutexattr_destroy(&attr);
throw SystemException("cannot create mutex");
@@ -75,14 +86,21 @@ MutexImpl::MutexImpl()
MutexImpl::MutexImpl(bool fast)
{
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
#if defined(PTHREAD_MUTEX_RECURSIVE_NP)
pthread_mutexattr_settype_np(&attr, fast ? PTHREAD_MUTEX_NORMAL_NP : PTHREAD_MUTEX_RECURSIVE_NP);
#else
pthread_mutexattr_settype(&attr, fast ? PTHREAD_MUTEX_NORMAL : PTHREAD_MUTEX_RECURSIVE);
#if defined(POCO_VXWORKS)
// This workaround is for VxWorks 5.x where
// pthread_mutex_init() won't properly initialize the mutex
// resulting in a subsequent freeze in pthread_mutex_destroy()
// if the mutex has never been used.
std::memset(&_mutex, 0, sizeof(_mutex));
#endif
if (pthread_mutex_init(&_mutex, &attr))
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
#if defined(PTHREAD_MUTEX_RECURSIVE_NP)
pthread_mutexattr_settype_np(&attr, fast ? PTHREAD_MUTEX_NORMAL_NP : PTHREAD_MUTEX_RECURSIVE_NP);
#elif !defined(POCO_VXWORKS)
pthread_mutexattr_settype(&attr, fast ? PTHREAD_MUTEX_NORMAL : PTHREAD_MUTEX_RECURSIVE);
#endif
if (pthread_mutex_init(&_mutex, &attr))
{
pthread_mutexattr_destroy(&attr);
throw SystemException("cannot create mutex");
@@ -125,16 +143,24 @@ bool MutexImpl::tryLockImpl(long milliseconds)
{
int rc = pthread_mutex_trylock(&_mutex);
if (rc == 0)
return true;
else if (rc != EBUSY)
throw SystemException("cannot lock mutex");
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = sleepMillis * 1000;
select(0, NULL, NULL, NULL, &tv);
}
while (!now.isElapsed(diff));
return false;
return true;
else if (rc != EBUSY)
throw SystemException("cannot lock mutex");
#if defined(POCO_VXWORKS)
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = sleepMillis*1000000;
nanosleep(&ts, NULL);
#else
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = sleepMillis * 1000;
select(0, NULL, NULL, NULL, &tv);
#endif
}
while (!now.isElapsed(diff));
return false;
#endif
}