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