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sync.c
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sync.c
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/*
Direct port of the cross platform 'sync' library: https://github.com/cubiclesoft/cross-platform-cpp
This source file is under the MIT, LGPL, or version 3.01 of the PHP license, your choice.
(C) 2014 CubicleSoft. All rights reserved.
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "zend_exceptions.h"
#include "ext/standard/info.h"
#if defined(PHP_WIN32) && PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION <= 4
#include "win32/php_stdint.h"
#else
#include <stdint.h>
#endif
#include "php_sync.h"
/* PHP_FE_END not define in php < 5.3.7 */
#ifndef PHP_FE_END
#define PHP_FE_END {NULL, NULL, NULL}
#endif
/* {{{ sync_module_entry
*/
zend_module_entry sync_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#endif
"sync",
NULL,
PHP_MINIT(sync),
PHP_MSHUTDOWN(sync),
NULL,
NULL,
PHP_MINFO(sync),
#if ZEND_MODULE_API_NO >= 20010901
PHP_SYNC_VERSION,
#endif
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_SYNC
ZEND_GET_MODULE(sync)
#endif
#ifndef INFINITE
# define INFINITE 0xFFFFFFFF
#endif
#ifdef __MACH__
typedef int clockid_t;
#define CLOCK_REALTIME 1
int clock_gettime(clockid_t clk_id, struct timespec *ts)
{
clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
ts->tv_sec = mts.tv_sec;
ts->tv_nsec = mts.tv_nsec;
return 0;
}
int sem_timedwait(sem_t* sem, const struct timespec *abs_timeout) {
int retval = 0;
mach_timespec_t mts;
if (abs_timeout->tv_sec >= 0 || abs_timeout->tv_nsec >= 0) {
mts.tv_sec = abs_timeout->tv_sec;
mts.tv_nsec = abs_timeout->tv_nsec;
} else {
// FIX: If we really wait forever, we cannot shut down VERMONT
// this is mac os x specific and does not happen on linux
// hence, we just add a small timeout instead of blocking
// indefinately
mts.tv_sec = 1;
mts.tv_nsec = 0;
}
retval = semaphore_timedwait(*sem, mts);
switch (retval) {
case KERN_SUCCESS:
return 0;
case KERN_OPERATION_TIMED_OUT:
errno = ETIMEDOUT;
break;
case KERN_ABORTED:
errno = EINTR;
break;
default:
errno = EINVAL;
break;
}
return -1;
}
#endif
/* Define some generic functions used several places. */
#if defined(PHP_WIN32)
/* Windows. */
sync_ThreadIDType sync_GetCurrentThreadID()
{
return GetCurrentThreadId();
}
uint64_t sync_GetUnixMicrosecondTime()
{
FILETIME TempTime;
ULARGE_INTEGER TempTime2;
uint64_t Result;
GetSystemTimeAsFileTime(&TempTime);
TempTime2.HighPart = TempTime.dwHighDateTime;
TempTime2.LowPart = TempTime.dwLowDateTime;
Result = TempTime2.QuadPart;
Result = (Result / 10) - (uint64_t)11644473600000000ULL;
return Result;
}
#else
/* POSIX pthreads. */
sync_ThreadIDType sync_GetCurrentThreadID()
{
return pthread_self();
}
uint64_t sync_GetUnixMicrosecondTime()
{
struct timeval TempTime;
if (gettimeofday(&TempTime, NULL)) return 0;
return (uint64_t)((uint64_t)TempTime.tv_sec * (uint64_t)1000000 + (uint64_t)TempTime.tv_usec);
}
/* Simplifies timer-based mutex/semaphore acquisition. */
int sync_WaitForSemaphore(sem_t *SemPtr, uint32_t Wait)
{
if (SemPtr == SEM_FAILED) return 0;
if (Wait == INFINITE)
{
while (sem_wait(SemPtr) < 0)
{
if (errno != EINTR) return 0;
}
}
else if (Wait == 0)
{
while (sem_trywait(SemPtr) < 0)
{
if (errno != EINTR) return 0;
}
}
else
{
struct timespec TempTime;
if (clock_gettime(CLOCK_REALTIME, &TempTime) == -1) return 0;
TempTime.tv_sec += Wait / 1000;
TempTime.tv_nsec += (Wait % 1000) * 1000000;
TempTime.tv_sec += TempTime.tv_nsec / 1000000000;
TempTime.tv_nsec = TempTime.tv_nsec % 1000000000;
while (sem_timedwait(SemPtr, &TempTime) < 0)
{
if (errno != EINTR) return 0;
}
}
return 1;
}
#endif
/* Mutex */
PHP_SYNC_API zend_class_entry *sync_Mutex_ce;
void sync_Mutex_free_object(void *object TSRMLS_DC);
/* {{{ Initialize internal Mutex structure. */
zend_object_value sync_Mutex_create_object(zend_class_entry *ce TSRMLS_DC)
{
zend_object_value retval;
sync_Mutex_object *obj;
#if PHP_VERSION_ID < 50399
zval *tmp;
#endif
/* Create the object. */
obj = (sync_Mutex_object *)ecalloc(1, sizeof(sync_Mutex_object));
/* Initialize Zend. */
zend_object_std_init(&obj->std, ce TSRMLS_CC);
#if PHP_VERSION_ID < 50399
zend_hash_copy(obj->std.properties, &ce->default_properties, (copy_ctor_func_t)zval_add_ref, (void *)&tmp, sizeof(zval *));
#else
object_properties_init(&obj->std, ce);
#endif
/* Initialize destructor callback. */
retval.handle = zend_objects_store_put((void *)obj, (zend_objects_store_dtor_t)zend_objects_destroy_object, sync_Mutex_free_object, NULL TSRMLS_CC);
retval.handlers = zend_get_std_object_handlers();
/* Initialize Mutex information. */
#if defined(PHP_WIN32)
obj->MxWinMutex = NULL;
InitializeCriticalSection(&obj->MxWinCritSection);
#else
obj->MxSemMutex = SEM_FAILED;
obj->MxAllocated = 0;
pthread_mutex_init(&obj->MxPthreadCritSection, NULL);
#endif
obj->MxOwnerID = 0;
obj->MxCount = 0;
return retval;
}
/* }}} */
/* {{{ Unlocks a mutex. */
int sync_Mutex_unlock_internal(sync_Mutex_object *obj, int all)
{
#if defined(PHP_WIN32)
EnterCriticalSection(&obj->MxWinCritSection);
/* Make sure the mutex exists and make sure it is owned by the calling thread. */
if (obj->MxWinMutex == NULL || obj->MxOwnerID != sync_GetCurrentThreadID())
{
LeaveCriticalSection(&obj->MxWinCritSection);
return 0;
}
if (all) obj->MxCount = 1;
obj->MxCount--;
if (!obj->MxCount)
{
obj->MxOwnerID = 0;
/* Release the mutex. */
ReleaseMutex(obj->MxWinMutex);
}
LeaveCriticalSection(&obj->MxWinCritSection);
#else
if (pthread_mutex_lock(&obj->MxPthreadCritSection) != 0) return 0;
/* Make sure the mutex exists and make sure it is owned by the calling thread. */
if (obj->MxSemMutex == SEM_FAILED || obj->MxOwnerID != sync_GetCurrentThreadID())
{
pthread_mutex_unlock(&obj->MxPthreadCritSection);
return 0;
}
if (all) obj->MxCount = 1;
obj->MxCount--;
if (!obj->MxCount)
{
obj->MxOwnerID = 0;
/* Release the mutex. */
sem_post(obj->MxSemMutex);
}
pthread_mutex_unlock(&obj->MxPthreadCritSection);
#endif
return 1;
}
/* }}} */
/* {{{ Free internal Mutex structure. */
void sync_Mutex_free_object(void *object TSRMLS_DC)
{
sync_Mutex_object *obj = (sync_Mutex_object *)object;
sync_Mutex_unlock_internal(obj, 1);
#if defined(PHP_WIN32)
if (obj->MxWinMutex != NULL) CloseHandle(obj->MxWinMutex);
DeleteCriticalSection(&obj->MxWinCritSection);
#else
if (obj->MxSemMutex != SEM_FAILED)
{
if (obj->MxAllocated) efree(obj->MxSemMutex);
else sem_close(obj->MxSemMutex);
}
pthread_mutex_destroy(&obj->MxPthreadCritSection);
#endif
}
/* }}} */
/* {{{ proto void Sync_Mutex::__construct([string $name = null])
Constructs a named or unnamed mutex object. */
PHP_METHOD(sync_Mutex, __construct)
{
char *name = NULL;
int name_len;
sync_Mutex_object *obj;
#if defined(PHP_WIN32)
SECURITY_ATTRIBUTES SecAttr;
#else
char *name2;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &name, &name_len) == FAILURE) return;
obj = (sync_Mutex_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
SecAttr.nLength = sizeof(SecAttr);
SecAttr.lpSecurityDescriptor = NULL;
SecAttr.bInheritHandle = TRUE;
obj->MxWinMutex = CreateMutexA(&SecAttr, FALSE, name);
if (obj->MxWinMutex == NULL)
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Mutex could not be created", 0 TSRMLS_CC);
return;
}
#else
if (name != NULL)
{
name2 = emalloc(name_len + 20);
sprintf(name2, "/Sync_Mutex_%s_0", name);
obj->MxSemMutex = sem_open(name2, O_CREAT, 0666, 1);
efree(name2);
}
else
{
obj->MxAllocated = 1;
obj->MxSemMutex = (sem_t *)ecalloc(1, sizeof(sem_t));
sem_init(obj->MxSemMutex, 0, 1);
}
if (obj->MxSemMutex == SEM_FAILED)
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Mutex could not be created", 0 TSRMLS_CC);
return;
}
#endif
}
/* }}} */
/* {{{ proto bool Sync_Mutex::lock([int $wait = -1])
Locks a mutex object. */
PHP_METHOD(sync_Mutex, lock)
{
long wait = -1;
sync_Mutex_object *obj;
#if defined(PHP_WIN32)
DWORD Result;
#else
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &wait) == FAILURE) return;
obj = (sync_Mutex_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
EnterCriticalSection(&obj->MxWinCritSection);
/* Check to see if this is already owned by the calling thread. */
if (obj->MxOwnerID == sync_GetCurrentThreadID())
{
obj->MxCount++;
LeaveCriticalSection(&obj->MxWinCritSection);
RETURN_TRUE;
}
LeaveCriticalSection(&obj->MxWinCritSection);
/* Acquire the mutex. */
Result = WaitForSingleObject(obj->MxWinMutex, (DWORD)(wait > -1 ? wait : INFINITE));
if (Result != WAIT_OBJECT_0) RETURN_FALSE;
EnterCriticalSection(&obj->MxWinCritSection);
obj->MxOwnerID = sync_GetCurrentThreadID();
obj->MxCount = 1;
LeaveCriticalSection(&obj->MxWinCritSection);
#else
if (pthread_mutex_lock(&obj->MxPthreadCritSection) != 0)
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Unable to acquire mutex critical section", 0 TSRMLS_CC);
RETURN_FALSE;
}
/* Check to see if this mutex is already owned by the calling thread. */
if (obj->MxOwnerID == sync_GetCurrentThreadID())
{
obj->MxCount++;
pthread_mutex_unlock(&obj->MxPthreadCritSection);
RETURN_TRUE;
}
pthread_mutex_unlock(&obj->MxPthreadCritSection);
if (!sync_WaitForSemaphore(obj->MxSemMutex, (uint32_t)(wait > -1 ? wait : INFINITE))) RETURN_FALSE;
pthread_mutex_lock(&obj->MxPthreadCritSection);
obj->MxOwnerID = sync_GetCurrentThreadID();
obj->MxCount = 1;
pthread_mutex_unlock(&obj->MxPthreadCritSection);
#endif
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool Sync_Mutex::unlock([bool $all = false])
Unlocks a mutex object. */
PHP_METHOD(sync_Mutex, unlock)
{
long all = 0;
sync_Mutex_object *obj;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &all) == FAILURE) return;
obj = (sync_Mutex_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
if (!sync_Mutex_unlock_internal(obj, all)) RETURN_FALSE;
RETURN_TRUE;
}
/* }}} */
ZEND_BEGIN_ARG_INFO_EX(arginfo_sync_mutex___construct, 0, 0, 0)
ZEND_ARG_INFO(0, name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_sync_mutex_lock, 0, 0, 0)
ZEND_ARG_INFO(0, wait)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_sync_mutex_unlock, 0, 0, 0)
ZEND_ARG_INFO(0, all)
ZEND_END_ARG_INFO()
static const zend_function_entry sync_Mutex_methods[] = {
PHP_ME(sync_Mutex, __construct, arginfo_sync_mutex___construct, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
PHP_ME(sync_Mutex, lock, arginfo_sync_mutex_lock, ZEND_ACC_PUBLIC)
PHP_ME(sync_Mutex, unlock, arginfo_sync_mutex_unlock, ZEND_ACC_PUBLIC)
PHP_FE_END
};
/* Semaphore */
PHP_SYNC_API zend_class_entry *sync_Semaphore_ce;
void sync_Semaphore_free_object(void *object TSRMLS_DC);
/* {{{ Initialize internal Semaphore structure. */
zend_object_value sync_Semaphore_create_object(zend_class_entry *ce TSRMLS_DC)
{
zend_object_value retval;
sync_Semaphore_object *obj;
#if PHP_VERSION_ID < 50399
zval *tmp;
#endif
/* Create the object. */
obj = (sync_Semaphore_object *)ecalloc(1, sizeof(sync_Semaphore_object));
/* Initialize Zend. */
zend_object_std_init(&obj->std, ce TSRMLS_CC);
#if PHP_VERSION_ID < 50399
zend_hash_copy(obj->std.properties, &ce->default_properties, (copy_ctor_func_t)zval_add_ref, (void *)&tmp, sizeof(zval *));
#else
object_properties_init(&obj->std, ce);
#endif
/* Initialize destructor callback. */
retval.handle = zend_objects_store_put((void *)obj, (zend_objects_store_dtor_t)zend_objects_destroy_object, sync_Semaphore_free_object, NULL TSRMLS_CC);
retval.handlers = zend_get_std_object_handlers();
/* Initialize Semaphore information. */
#if defined(PHP_WIN32)
obj->MxWinSemaphore = NULL;
#else
obj->MxSemSemaphore = SEM_FAILED;
obj->MxAllocated = 0;
#endif
obj->MxAutoUnlock = 0;
obj->MxCount = 0;
return retval;
}
/* }}} */
/* {{{ Free internal Semaphore structure. */
void sync_Semaphore_free_object(void *object TSRMLS_DC)
{
sync_Semaphore_object *obj = (sync_Semaphore_object *)object;
if (obj->MxAutoUnlock)
{
while (obj->MxCount)
{
#if defined(PHP_WIN32)
ReleaseSemaphore(obj->MxWinSemaphore, 1, NULL);
#else
sem_post(obj->MxSemSemaphore);
#endif
obj->MxCount--;
}
}
#if defined(PHP_WIN32)
if (obj->MxWinSemaphore != NULL) CloseHandle(obj->MxWinSemaphore);
#else
if (obj->MxSemSemaphore != SEM_FAILED)
{
if (obj->MxAllocated) efree(obj->MxSemSemaphore);
else sem_close(obj->MxSemSemaphore);
}
#endif
}
/* }}} */
/* {{{ proto void Sync_Semaphore::__construct([string $name = null, [int $initialval = 1, [bool $autounlock = true]]])
Constructs a named or unnamed semaphore object. Don't set $autounlock to false unless you really know what you are doing. */
PHP_METHOD(sync_Semaphore, __construct)
{
char *name = NULL;
int name_len;
long initialval = 1;
long autounlock = 1;
sync_Semaphore_object *obj;
#if defined(PHP_WIN32)
SECURITY_ATTRIBUTES SecAttr;
#else
char *name2;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|sll", &name, &name_len, &initialval, &autounlock) == FAILURE) return;
obj = (sync_Semaphore_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
obj->MxAutoUnlock = (autounlock ? 1 : 0);
#if defined(PHP_WIN32)
SecAttr.nLength = sizeof(SecAttr);
SecAttr.lpSecurityDescriptor = NULL;
SecAttr.bInheritHandle = TRUE;
obj->MxWinSemaphore = CreateSemaphoreA(&SecAttr, (LONG)initialval, (LONG)initialval, name);
if (obj->MxWinSemaphore == NULL)
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Semaphore could not be created", 0 TSRMLS_CC);
return;
}
#else
if (name != NULL)
{
name2 = emalloc(name_len + 20);
sprintf(name2, "/Sync_Semaphore_%s_0", name);
obj->MxSemSemaphore = sem_open(name2, O_CREAT, 0666, (unsigned int)initialval);
efree(name2);
}
else
{
obj->MxAllocated = 1;
obj->MxSemSemaphore = (sem_t *)ecalloc(1, sizeof(sem_t));
sem_init(obj->MxSemSemaphore, 0, (unsigned int)initialval);
}
if (obj->MxSemSemaphore == SEM_FAILED)
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Semaphore could not be created", 0 TSRMLS_CC);
return;
}
#endif
}
/* }}} */
/* {{{ proto bool Sync_Semaphore::lock([int $wait = -1])
Locks a semaphore object. */
PHP_METHOD(sync_Semaphore, lock)
{
long wait = -1;
sync_Semaphore_object *obj;
#if defined(PHP_WIN32)
DWORD Result;
#else
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &wait) == FAILURE) return;
obj = (sync_Semaphore_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
Result = WaitForSingleObject(obj->MxWinSemaphore, (DWORD)(wait > -1 ? wait : INFINITE));
if (Result != WAIT_OBJECT_0) RETURN_FALSE;
#else
if (!sync_WaitForSemaphore(obj->MxSemSemaphore, (uint32_t)(wait > -1 ? wait : INFINITE))) RETURN_FALSE;
#endif
if (obj->MxAutoUnlock) obj->MxCount++;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool Sync_Semaphore::unlock([int &$prevcount])
Unlocks a semaphore object. */
PHP_METHOD(sync_Semaphore, unlock)
{
zval **zprevcount = NULL;
sync_Semaphore_object *obj;
int count;
int argc = ZEND_NUM_ARGS();
#if defined(PHP_WIN32)
LONG PrevCount;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|Z", &zprevcount) == FAILURE) return;
obj = (sync_Semaphore_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
if (!ReleaseSemaphore(obj->MxWinSemaphore, 1, &PrevCount)) RETURN_FALSE;
count = (int)PrevCount;
#else
/* Get the current value first. */
sem_getvalue(obj->MxSemSemaphore, &count);
/* Release the semaphore. */
sem_post(obj->MxSemSemaphore);
#endif
if (argc > 0)
{
zval_dtor(*zprevcount);
ZVAL_LONG(*zprevcount, count);
}
if (obj->MxAutoUnlock) obj->MxCount--;
RETURN_TRUE;
}
/* }}} */
ZEND_BEGIN_ARG_INFO_EX(arginfo_sync_semaphore___construct, 0, 0, 0)
ZEND_ARG_INFO(0, name)
ZEND_ARG_INFO(0, initialval)
ZEND_ARG_INFO(0, autounlock)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_sync_semaphore_lock, 0, 0, 0)
ZEND_ARG_INFO(0, wait)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_sync_semaphore_unlock, 0, 0, 0)
ZEND_ARG_INFO(1, prevcount)
ZEND_END_ARG_INFO()
static const zend_function_entry sync_Semaphore_methods[] = {
PHP_ME(sync_Semaphore, __construct, arginfo_sync_semaphore___construct, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
PHP_ME(sync_Semaphore, lock, arginfo_sync_semaphore_lock, ZEND_ACC_PUBLIC)
PHP_ME(sync_Semaphore, unlock, arginfo_sync_semaphore_unlock, ZEND_ACC_PUBLIC)
PHP_FE_END
};
/* Event */
PHP_SYNC_API zend_class_entry *sync_Event_ce;
void sync_Event_free_object(void *object TSRMLS_DC);
/* {{{ Initialize internal Event structure. */
zend_object_value sync_Event_create_object(zend_class_entry *ce TSRMLS_DC)
{
zend_object_value retval;
sync_Event_object *obj;
#if PHP_VERSION_ID < 50399
zval *tmp;
#endif
/* Create the object. */
obj = (sync_Event_object *)ecalloc(1, sizeof(sync_Event_object));
/* Initialize Zend. */
zend_object_std_init(&obj->std, ce TSRMLS_CC);
#if PHP_VERSION_ID < 50399
zend_hash_copy(obj->std.properties, &ce->default_properties, (copy_ctor_func_t)zval_add_ref, (void *)&tmp, sizeof(zval *));
#else
object_properties_init(&obj->std, ce);
#endif
/* Initialize destructor callback. */
retval.handle = zend_objects_store_put((void *)obj, (zend_objects_store_dtor_t)zend_objects_destroy_object, sync_Event_free_object, NULL TSRMLS_CC);
retval.handlers = zend_get_std_object_handlers();
/* Initialize Event information. */
#if defined(PHP_WIN32)
obj->MxWinWaitEvent = NULL;
#else
obj->MxSemWaitMutex = SEM_FAILED;
obj->MxSemWaitEvent = SEM_FAILED;
obj->MxSemWaitCount = SEM_FAILED;
obj->MxSemWaitStatus = SEM_FAILED;
obj->MxAllocated = 0;
obj->MxManual = 0;
#endif
return retval;
}
/* }}} */
/* {{{ Free internal Event structure. */
void sync_Event_free_object(void *object TSRMLS_DC)
{
sync_Event_object *obj = (sync_Event_object *)object;
#if defined(PHP_WIN32)
if (obj->MxWinWaitEvent != NULL) CloseHandle(obj->MxWinWaitEvent);
#else
if (obj->MxAllocated)
{
if (obj->MxSemWaitStatus != SEM_FAILED) efree(obj->MxSemWaitStatus);
if (obj->MxSemWaitCount != SEM_FAILED) efree(obj->MxSemWaitCount);
if (obj->MxSemWaitEvent != SEM_FAILED) efree(obj->MxSemWaitEvent);
if (obj->MxSemWaitMutex != SEM_FAILED) efree(obj->MxSemWaitMutex);
}
else
{
if (obj->MxSemWaitStatus != SEM_FAILED) sem_close(obj->MxSemWaitStatus);
if (obj->MxSemWaitCount != SEM_FAILED) sem_close(obj->MxSemWaitCount);
if (obj->MxSemWaitEvent != SEM_FAILED) sem_close(obj->MxSemWaitEvent);
if (obj->MxSemWaitMutex != SEM_FAILED) sem_close(obj->MxSemWaitMutex);
}
#endif
}
/* }}} */
/* {{{ proto void Sync_Event::__construct([string $name = null, [bool $manual = false]])
Constructs a named or unnamed event object. */
PHP_METHOD(sync_Event, __construct)
{
char *name = NULL;
int name_len;
long manual = 0;
sync_Event_object *obj;
#if defined(PHP_WIN32)
SECURITY_ATTRIBUTES SecAttr;
#else
char *name2;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|sl", &name, &name_len, &manual) == FAILURE) return;
obj = (sync_Event_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
SecAttr.nLength = sizeof(SecAttr);
SecAttr.lpSecurityDescriptor = NULL;
SecAttr.bInheritHandle = TRUE;
obj->MxWinWaitEvent = CreateEventA(&SecAttr, (BOOL)manual, FALSE, name);
if (obj->MxWinWaitEvent == NULL)
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Event object could not be created", 0 TSRMLS_CC);
return;
}
#else
obj->MxManual = (manual ? 1 : 0);
if (name != NULL)
{
name2 = emalloc(name_len + 20);
sprintf(name2, "/Sync_Event_%s_0", name);
obj->MxSemWaitMutex = sem_open(name2, O_CREAT, 0666, 1);
sprintf(name2, "/Sync_Event_%s_1", name);
obj->MxSemWaitEvent = sem_open(name2, O_CREAT, 0666, 0);
if (manual)
{
sprintf(name2, "/Sync_Event_%s_2", name);
obj->MxSemWaitCount = sem_open(name2, O_CREAT, 0666, 0);
sprintf(name2, "/Sync_Event_%s_3", name);
obj->MxSemWaitStatus = sem_open(name2, O_CREAT, 0666, 0);
}
efree(name2);
}
else
{
obj->MxAllocated = 1;
obj->MxSemWaitMutex = (sem_t *)ecalloc(1, sizeof(sem_t));
sem_init(obj->MxSemWaitMutex, 0, 1);
obj->MxSemWaitEvent = (sem_t *)ecalloc(1, sizeof(sem_t));
sem_init(obj->MxSemWaitEvent, 0, 0);
if (manual)
{
obj->MxSemWaitCount = (sem_t *)ecalloc(1, sizeof(sem_t));
sem_init(obj->MxSemWaitCount, 0, 0);
obj->MxSemWaitStatus = (sem_t *)ecalloc(1, sizeof(sem_t));
sem_init(obj->MxSemWaitStatus, 0, 0);
}
}
if (obj->MxSemWaitMutex == SEM_FAILED || obj->MxSemWaitEvent == SEM_FAILED || (manual && (obj->MxSemWaitCount == SEM_FAILED || obj->MxSemWaitStatus == SEM_FAILED)))
{
zend_throw_exception(zend_exception_get_default(TSRMLS_C), "Event object could not be created", 0 TSRMLS_CC);
return;
}
#endif
}
/* }}} */
/* {{{ proto bool Sync_Event::wait([int $wait = -1])
Waits for an event object to fire. */
PHP_METHOD(sync_Event, wait)
{
long wait = -1;
sync_Event_object *obj;
#if defined(PHP_WIN32)
DWORD Result;
#else
uint32_t WaitAmt;
uint64_t StartTime, CurrTime;
int Val, Result;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &wait) == FAILURE) return;
obj = (sync_Event_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
Result = WaitForSingleObject(obj->MxWinWaitEvent, (DWORD)(wait > -1 ? wait : INFINITE));
if (Result != WAIT_OBJECT_0) RETURN_FALSE;
#else
WaitAmt = (uint32_t)(wait > -1 ? wait : INFINITE);
/* Get current time in milliseconds. */
StartTime = (WaitAmt == INFINITE ? 0 : sync_GetUnixMicrosecondTime() / 1000000);
if (!obj->MxManual) CurrTime = StartTime;
else
{
/* Lock the mutex. */
if (!sync_WaitForSemaphore(obj->MxSemWaitMutex, WaitAmt)) RETURN_FALSE;
/* Get the status. If it is 1, then the event has been fired. */
sem_getvalue(obj->MxSemWaitStatus, &Val);
if (Val == 1)
{
sem_post(obj->MxSemWaitMutex);
RETURN_TRUE;
}
/* Increment the wait count. */
CurrTime = (WaitAmt == INFINITE ? 0 : sync_GetUnixMicrosecondTime() / 1000000);
if (WaitAmt < CurrTime - StartTime)
{
sem_post(obj->MxSemWaitMutex);
RETURN_FALSE;
}
sem_post(obj->MxSemWaitCount);
/* Release the mutex. */
sem_post(obj->MxSemWaitMutex);
}
/* Wait for the semaphore. */
Result = sync_WaitForSemaphore(obj->MxSemWaitEvent, WaitAmt - (CurrTime - StartTime));
if (obj->MxManual)
{
/* Lock the mutex. */
sync_WaitForSemaphore(obj->MxSemWaitMutex, INFINITE);
/* Decrease the wait count. */
sync_WaitForSemaphore(obj->MxSemWaitCount, INFINITE);
/* Release the mutex. */
sem_post(obj->MxSemWaitMutex);
}
if (!Result) RETURN_FALSE;
#endif
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool Sync_Event::fire()
Lets a thread through that is waiting. Lets multiple threads through that are waiting if the event object is 'manual'. */
PHP_METHOD(sync_Event, fire)
{
sync_Event_object *obj;
#if defined(PHP_WIN32)
#else
int x, Val;
#endif
obj = (sync_Event_object *)zend_object_store_get_object(getThis() TSRMLS_CC);
#if defined(PHP_WIN32)
if (!SetEvent(obj->MxWinWaitEvent)) RETURN_FALSE;
#else
if (obj->MxManual)
{
/* Lock the mutex. */
if (!sync_WaitForSemaphore(obj->MxSemWaitMutex, INFINITE)) RETURN_FALSE;
/* Update the status. No wait. */
sem_getvalue(obj->MxSemWaitStatus, &Val);
if (Val == 0) sem_post(obj->MxSemWaitStatus);
/* Release the mutex. */
sem_post(obj->MxSemWaitMutex);
/* Release all waiting threads. Might do too many sem_post() calls. */
sem_getvalue(obj->MxSemWaitCount, &Val);
for (x = 0; x < Val; x++) sem_post(obj->MxSemWaitEvent);
}
else
{
/* Release one thread. */
sem_getvalue(obj->MxSemWaitEvent, &Val);
if (Val == 0) sem_post(obj->MxSemWaitEvent);
}
#endif