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| 1 | |||
| 2 | /* This code implemented by Mark Hammond (MHammond@skippinet.com.au) */ | ||
| 3 | |||
| 4 | #include <windows.h> | ||
| 5 | #include <limits.h> | ||
| 6 | #include <pydebug.h> | ||
| 7 | |||
| 8 | long PyThread_get_thread_ident(void); | ||
| 9 | |||
| 10 | /* | ||
| 11 | * Change all headers to pure ANSI as no one will use K&R style on an | ||
| 12 | * NT | ||
| 13 | */ | ||
| 14 | |||
| 15 | /* | ||
| 16 | * Initialization of the C package, should not be needed. | ||
| 17 | */ | ||
| 18 | static void PyThread__init_thread(void) | ||
| 19 | { | ||
| 20 | } | ||
| 21 | |||
| 22 | /* | ||
| 23 | * Thread support. | ||
| 24 | */ | ||
| 25 | long PyThread_start_new_thread(void (*func)(void *), void *arg) | ||
| 26 | { | ||
| 27 | long rv; | ||
| 28 | int success = -1; | ||
| 29 | |||
| 30 | dprintf(("%ld: PyThread_start_new_thread called\n", PyThread_get_thread_ident())); | ||
| 31 | if (!initialized) | ||
| 32 | PyThread_init_thread(); | ||
| 33 | |||
| 34 | rv = _beginthread(func, 0, arg); /* use default stack size */ | ||
| 35 | |||
| 36 | if (rv != -1) { | ||
| 37 | success = 0; | ||
| 38 | dprintf(("%ld: PyThread_start_new_thread succeeded:\n", PyThread_get_thread_ident())); | ||
| 39 | } | ||
| 40 | |||
| 41 | return success; | ||
| 42 | } | ||
| 43 | |||
| 44 | /* | ||
| 45 | * Return the thread Id instead of an handle. The Id is said to uniquely identify the | ||
| 46 | * thread in the system | ||
| 47 | */ | ||
| 48 | long PyThread_get_thread_ident(void) | ||
| 49 | { | ||
| 50 | if (!initialized) | ||
| 51 | PyThread_init_thread(); | ||
| 52 | |||
| 53 | return GetCurrentThreadId(); | ||
| 54 | } | ||
| 55 | |||
| 56 | static void do_PyThread_exit_thread(int no_cleanup) | ||
| 57 | { | ||
| 58 | dprintf(("%ld: do_PyThread_exit_thread called\n", PyThread_get_thread_ident())); | ||
| 59 | if (!initialized) | ||
| 60 | if (no_cleanup) | ||
| 61 | exit(0); /* XXX - was _exit()!! */ | ||
| 62 | else | ||
| 63 | exit(0); | ||
| 64 | _endthread(); | ||
| 65 | } | ||
| 66 | |||
| 67 | void PyThread_exit_thread(void) | ||
| 68 | { | ||
| 69 | do_PyThread_exit_thread(0); | ||
| 70 | } | ||
| 71 | |||
| 72 | void PyThread__exit_thread(void) | ||
| 73 | { | ||
| 74 | do_PyThread_exit_thread(1); | ||
| 75 | } | ||
| 76 | |||
| 77 | #ifndef NO_EXIT_PROG | ||
| 78 | static void do_PyThread_exit_prog(int status, int no_cleanup) | ||
| 79 | { | ||
| 80 | dprintf(("PyThread_exit_prog(%d) called\n", status)); | ||
| 81 | if (!initialized) | ||
| 82 | if (no_cleanup) | ||
| 83 | _exit(status); | ||
| 84 | else | ||
| 85 | exit(status); | ||
| 86 | } | ||
| 87 | |||
| 88 | void PyThread_exit_prog(int status) | ||
| 89 | { | ||
| 90 | do_PyThread_exit_prog(status, 0); | ||
| 91 | } | ||
| 92 | |||
| 93 | void PyThread__exit_prog(int status) | ||
| 94 | { | ||
| 95 | do_PyThread_exit_prog(status, 1); | ||
| 96 | } | ||
| 97 | #endif /* NO_EXIT_PROG */ | ||
| 98 | |||
| 99 | /* | ||
| 100 | * Lock support. It has to be implemented using Mutexes, as | ||
| 101 | * CE doesnt support semaphores. Therefore we use some hacks to | ||
| 102 | * simulate the non reentrant requirements of Python locks | ||
| 103 | */ | ||
| 104 | PyThread_type_lock PyThread_allocate_lock(void) | ||
| 105 | { | ||
| 106 | HANDLE aLock; | ||
| 107 | |||
| 108 | dprintf(("PyThread_allocate_lock called\n")); | ||
| 109 | if (!initialized) | ||
| 110 | PyThread_init_thread(); | ||
| 111 | |||
| 112 | aLock = CreateEvent(NULL, /* Security attributes */ | ||
| 113 | 0, /* Manual-Reset */ | ||
| 114 | 1, /* Is initially signalled */ | ||
| 115 | NULL); /* Name of event */ | ||
| 116 | |||
| 117 | dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock)); | ||
| 118 | |||
| 119 | return (PyThread_type_lock) aLock; | ||
| 120 | } | ||
| 121 | |||
| 122 | void PyThread_free_lock(PyThread_type_lock aLock) | ||
| 123 | { | ||
| 124 | dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock)); | ||
| 125 | |||
| 126 | CloseHandle(aLock); | ||
| 127 | } | ||
| 128 | |||
| 129 | /* | ||
| 130 | * Return 1 on success if the lock was acquired | ||
| 131 | * | ||
| 132 | * and 0 if the lock was not acquired. This means a 0 is returned | ||
| 133 | * if the lock has already been acquired by this thread! | ||
| 134 | */ | ||
| 135 | int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag) | ||
| 136 | { | ||
| 137 | int success = 1; | ||
| 138 | DWORD waitResult; | ||
| 139 | |||
| 140 | dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag)); | ||
| 141 | |||
| 142 | #ifndef DEBUG | ||
| 143 | waitResult = WaitForSingleObject(aLock, (waitflag ? INFINITE : 0)); | ||
| 144 | #else | ||
| 145 | /* To aid in debugging, we regularly wake up. This allows us to | ||
| 146 | break into the debugger */ | ||
| 147 | while (TRUE) { | ||
| 148 | waitResult = WaitForSingleObject(aLock, waitflag ? 3000 : 0); | ||
| 149 | if (waitflag==0 || (waitflag && waitResult == WAIT_OBJECT_0)) | ||
| 150 | break; | ||
| 151 | } | ||
| 152 | #endif | ||
| 153 | |||
| 154 | if (waitResult != WAIT_OBJECT_0) { | ||
| 155 | success = 0; /* We failed */ | ||
| 156 | } | ||
| 157 | |||
| 158 | dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success)); | ||
| 159 | |||
| 160 | return success; | ||
| 161 | } | ||
| 162 | |||
| 163 | void PyThread_release_lock(PyThread_type_lock aLock) | ||
| 164 | { | ||
| 165 | dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock)); | ||
| 166 | |||
| 167 | if (!SetEvent(aLock)) | ||
| 168 | dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError())); | ||
| 169 | } | ||
| 170 | |||
| 171 | |||