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Diffstat (limited to 'Python/thread_wince.h')
-rw-r--r-- | Python/thread_wince.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/Python/thread_wince.h b/Python/thread_wince.h new file mode 100644 index 0000000..25634b8 --- /dev/null +++ b/Python/thread_wince.h @@ -0,0 +1,136 @@ + +/* 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 a 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())); +} + + |