/* This code implemented by Mark Hammond (MHammond@skippinet.com.au) */ | |
#include <windows.h> | |
#include <limits.h> | |
#include <pydebug.h> | |
long PyThread_get_thread_ident(void); | |
/* | |
* Change all headers to pure ANSI as no one will use K&R style on an | |
* NT | |
*/ | |
/* | |
* Initialization of the C package, should not be needed. | |
*/ | |
static void PyThread__init_thread(void) | |
{ | |
} | |
/* | |
* Thread support. | |
*/ | |
long PyThread_start_new_thread(void (*func)(void *), void *arg) | |
{ | |
long rv; | |
int success = -1; | |
dprintf(("%ld: PyThread_start_new_thread called\n", PyThread_get_thread_ident())); | |
if (!initialized) | |
PyThread_init_thread(); | |
rv = _beginthread(func, 0, arg); /* use default stack size */ | |
if (rv != -1) { | |
success = 0; | |
dprintf(("%ld: PyThread_start_new_thread succeeded:\n", PyThread_get_thread_ident())); | |
} | |
return success; | |
} | |
/* | |
* Return the thread Id instead of an handle. The Id is said to uniquely identify the | |
* thread in the system | |
*/ | |
long PyThread_get_thread_ident(void) | |
{ | |
if (!initialized) | |
PyThread_init_thread(); | |
return GetCurrentThreadId(); | |
} | |
void PyThread_exit_thread(void) | |
{ | |
dprintf(("%ld: PyThread_exit_thread called\n", PyThread_get_thread_ident())); | |
if (!initialized) | |
exit(0); | |
_endthread(); | |
} | |
/* | |
* Lock support. It has to be implemented using Mutexes, as | |
* CE doesnt support semaphores. Therefore we use some hacks to | |
* simulate the non reentrant requirements of Python locks | |
*/ | |
PyThread_type_lock PyThread_allocate_lock(void) | |
{ | |
HANDLE aLock; | |
dprintf(("PyThread_allocate_lock called\n")); | |
if (!initialized) | |
PyThread_init_thread(); | |
aLock = CreateEvent(NULL, /* Security attributes */ | |
0, /* Manual-Reset */ | |
1, /* Is initially signalled */ | |
NULL); /* Name of event */ | |
dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock)); | |
return (PyThread_type_lock) aLock; | |
} | |
void PyThread_free_lock(PyThread_type_lock aLock) | |
{ | |
dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock)); | |
CloseHandle(aLock); | |
} | |
/* | |
* Return 1 on success if the lock was acquired | |
* | |
* and 0 if the lock was not acquired. This means a 0 is returned | |
* if the lock has already been acquired by this thread! | |
*/ | |
int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag) | |
{ | |
int success = 1; | |
DWORD waitResult; | |
dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag)); | |
#ifndef DEBUG | |
waitResult = WaitForSingleObject(aLock, (waitflag ? INFINITE : 0)); | |
#else | |
/* To aid in debugging, we regularly wake up. This allows us to | |
break into the debugger */ | |
while (TRUE) { | |
waitResult = WaitForSingleObject(aLock, waitflag ? 3000 : 0); | |
if (waitflag==0 || (waitflag && waitResult == WAIT_OBJECT_0)) | |
break; | |
} | |
#endif | |
if (waitResult != WAIT_OBJECT_0) { | |
success = 0; /* We failed */ | |
} | |
dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success)); | |
return success; | |
} | |
void PyThread_release_lock(PyThread_type_lock aLock) | |
{ | |
dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock)); | |
if (!SetEvent(aLock)) | |
dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError())); | |
} | |