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#ifndef __CEVENT_OBJECT__
#define __CEVENT_OBJECT__
#include <pthread.h>
#define EVENT_SIGNALED 0
#define EVENT_TIMEDOUT 1
class CEvent
{
public:
CEvent();
~CEvent();
bool is_set_state() { return is_set_event; }
void set_signal_state( bool on_off );
void reset_signal_state();
int wait_for_signalstate( bool on_off );
private:
pthread_cond_t cond;
pthread_mutex_t lock;
bool is_set_event;
};
#endif // __CEVENT_OBJECT__
#include <pthread.h>
#include <sys/time.h>
#include <stdio.h>
#include "event.h"
CEvent::CEvent() : is_set_event( false )
{
pthread_cond_init( &cond, NULL );
pthread_mutex_init( &lock, NULL );
}
CEvent::~CEvent()
{
pthread_cond_destroy( &cond );
pthread_mutex_destroy( &lock );
}
void CEvent::set_signal_state( bool on_off )
{
pthread_mutex_lock( &lock );
is_set_event = on_off;
pthread_cond_signal( &cond );
pthread_mutex_unlock( &lock );
}
void CEvent::reset_signal_state()
{
pthread_mutex_lock( &lock );
is_set_event = false;
pthread_mutex_unlock( &lock );
}
int CEvent::wait_for_signalstate( bool onn_off )
{
pthread_mutex_lock( &lock );
int retcode = EVENT_SIGNALED;
struct timeval now;
struct timespec timeout;
while ( is_set_event != onn_off )// && retcode == 0 )
{
// we will wait for 15 seconds
gettimeofday(&now, NULL);
timeout.tv_sec = now.tv_sec + 15;
timeout.tv_nsec = now.tv_usec * 1000;
retcode = pthread_cond_timedwait( &cond, &lock, &timeout );
// pthread_cond_wait( &cond, &lock );
if ( 0 != retcode )
{
// time to wait ended
retcode = EVENT_TIMEDOUT;
break;
}
}
if ( 0 == retcode )
{
// event signaled
retcode = EVENT_SIGNALED;
}
pthread_mutex_unlock( &lock );
return retcode;
}
#ifndef __LINUX_SYN_LIKE_WIN__
#define __LINUX_SYN_LIKE_WIN__
#include <pthread.h>
#include "objbase.h"
//namespace linux_syn_like_win
//{
#define TRUE 1
#define FALSE 0
//
// Critical section
//
typedef struct _CRITICAL_SECTION
{
pthread_mutex_t mutex;
} CRITICAL_SECTION, *LPCRITICAL_SECTION;
enum OBJECT_MAGIC
{
EVENT_MAGIC,
NULL_MAGIC
};
typedef struct _OBJECT_HEADER
{
BYTE magic;
BYTE count;
_OBJECT_HEADER( BYTE _magic ) : magic( _magic ), count( 1 ) {}
} OBJECT_HEADER, *LPOBJECT_HEADER;
typedef struct _EVENT_OBJECT
{
OBJECT_HEADER header;
pthread_mutex_t lock;
pthread_cond_t cond;
bool is_set;
bool is_pulse;
bool is_manual_reset;
_EVENT_OBJECT( bool _is_set, bool _is_manual_reset )
: header( EVENT_MAGIC ), is_set( _is_set ),
is_pulse( false ), is_manual_reset( _is_manual_reset )
{
pthread_cond_init( &cond, NULL );
pthread_mutex_init( &lock, NULL );
}
~_EVENT_OBJECT()
{
pthread_cond_destroy( &cond );
pthread_mutex_destroy( &lock );
}
} EVENT_OBJECT, *LPEVENT_OBJECT;
void InitializeCriticalSection(LPCRITICAL_SECTION);
void EnterCriticalSection(LPCRITICAL_SECTION);
void LeaveCriticalSection(LPCRITICAL_SECTION);
void DeleteCriticalSection(LPCRITICAL_SECTION);
typedef void * HANDLE;
typedef void VOID;
BOOL CloseHandle( HANDLE hObject );
DWORD GetCurrentThreadId();
//
// Event
//
HANDLE CreateEvent(
void * skip,
BOOL bManualReset,
BOOL bInitialSet,
const char * );
HANDLE OpenEvent(
DWORD dwAccess,
BOOL bInheritHandle,
const char * );
BOOL SetEvent( HANDLE hObject );
BOOL PulseEvent( HANDLE hObject );
BOOL ResetEvent( HANDLE hObject );
enum WAIT_FOR_CONSTS
{
INFINITE
};
DWORD WaitForSingleObject( HANDLE hObject, DWORD dwTime );
//}
#endif // __LINUX_SYN_LIKE_WIN__
#include "sync.h"
//using namespace linux_syn_like_win;
void InitializeCriticalSection( LPCRITICAL_SECTION lpcs )
{
pthread_mutexattr_t attr;
pthread_mutexattr_init( &attr );
pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_RECURSIVE );
pthread_mutex_init( &lpcs->mutex, &attr );
pthread_mutexattr_destroy( &attr );
}
void EnterCriticalSection( LPCRITICAL_SECTION lpcs )
{
pthread_mutex_lock( &lpcs->mutex );
}
void LeaveCriticalSection( LPCRITICAL_SECTION lpcs )
{
pthread_mutex_unlock( &lpcs->mutex );
}
void DeleteCriticalSection( LPCRITICAL_SECTION lpcs )
{
pthread_mutex_destroy( &lpcs->mutex );
}
BOOL CloseHandle( HANDLE hObject )
{
LPOBJECT_HEADER lpHeader = (LPOBJECT_HEADER)hObject;
if ( EVENT_MAGIC == lpHeader->magic )
{
if ( 0 == --lpHeader->count )
delete (LPEVENT_OBJECT)hObject;
return TRUE;
}
return FALSE;
}
//
// Event
//
HANDLE CreateEvent(
void * ignore, // ignored
BOOL bManualReset,
BOOL bInitialSet,
const char * // ignored
)
{
return (HANDLE) new EVENT_OBJECT( bInitialSet, bManualReset );
}
HANDLE OpenEvent(
DWORD dwAccess,
BOOL bInheritHandle,
const char * )
{
// nope
return NULL;
}
BOOL SetEvent( HANDLE hObject )
{
LPOBJECT_HEADER lpHeader = (LPOBJECT_HEADER)hObject;
if ( EVENT_MAGIC != lpHeader->magic )
return FALSE;
LPEVENT_OBJECT lpObject = (LPEVENT_OBJECT)hObject;
pthread_mutex_lock( &lpObject->lock );
lpObject->is_set = true;
lpObject->is_pulse = false;
pthread_cond_broadcast( &lpObject->cond );
pthread_mutex_unlock( &lpObject->lock );
return TRUE;
}
BOOL PulseEvent( HANDLE hObject )
{
LPOBJECT_HEADER lpHeader = (LPOBJECT_HEADER)hObject;
if ( EVENT_MAGIC != lpHeader->magic )
return FALSE;
LPEVENT_OBJECT lpObject = (LPEVENT_OBJECT)hObject;
pthread_mutex_lock( &lpObject->lock );
lpObject->is_set = true;
lpObject->is_pulse = true;
pthread_cond_signal( &lpObject->cond );
pthread_mutex_unlock( &lpObject->lock );
return TRUE;
}
BOOL ResetEvent( HANDLE hObject )
{
LPOBJECT_HEADER lpHeader = (LPOBJECT_HEADER)hObject;
if ( EVENT_MAGIC != lpHeader->magic )
return FALSE;
LPEVENT_OBJECT lpObject = (LPEVENT_OBJECT)hObject;
pthread_mutex_lock( &lpObject->lock );
lpObject->is_set = false;
pthread_mutex_unlock( &lpObject->lock );
return TRUE;
}
DWORD WaitForSingleObject(
HANDLE hObject,
DWORD dwTime
)
{
LPOBJECT_HEADER lpHeader = (LPOBJECT_HEADER)hObject;
if ( EVENT_MAGIC != lpHeader->magic )
return 0;
LPEVENT_OBJECT lpObject = (LPEVENT_OBJECT)hObject;
if ( false == lpObject->is_manual_reset )
lpObject->is_set = false;
pthread_mutex_lock( &lpObject->lock );
if ( true != lpObject->is_set )
pthread_cond_wait( &lpObject->cond, &lpObject->lock );
pthread_mutex_unlock( &lpObject->lock );
return 1;
}
DWORD GetCurrentThreadId()
{
return (DWORD)pthread_self();
} |