diff options
Diffstat (limited to 'Python/thread_os2.h')
| -rw-r--r-- | Python/thread_os2.h | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/Python/thread_os2.h b/Python/thread_os2.h deleted file mode 100644 index 1b264b5..0000000 --- a/Python/thread_os2.h +++ /dev/null @@ -1,267 +0,0 @@ -/* This code implemented by cvale@netcom.com */ - -#define INCL_DOSPROCESS -#define INCL_DOSSEMAPHORES -#include "os2.h" -#include "limits.h" - -#include "process.h" - -#if defined(PYCC_GCC) -#include <sys/builtin.h> -#include <sys/fmutex.h> -#else -long PyThread_get_thread_ident(void); -#endif - -/* default thread stack size of 64kB */ -#if !defined(THREAD_STACK_SIZE) -#define THREAD_STACK_SIZE 0x10000 -#endif - -#define OS2_STACKSIZE(x) (x ? x : THREAD_STACK_SIZE) - -/* - * 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) -{ - int thread_id; - - thread_id = _beginthread(func, - NULL, - OS2_STACKSIZE(_pythread_stacksize), - arg); - - if (thread_id == -1) { - dprintf(("_beginthread failed. return %ld\n", errno)); - } - - return thread_id; -} - -long -PyThread_get_thread_ident(void) -{ -#if !defined(PYCC_GCC) - PPIB pib; - PTIB tib; -#endif - - if (!initialized) - PyThread_init_thread(); - -#if defined(PYCC_GCC) - return _gettid(); -#else - DosGetInfoBlocks(&tib, &pib); - return tib->tib_ptib2->tib2_ultid; -#endif -} - -void -PyThread_exit_thread(void) -{ - dprintf(("%ld: PyThread_exit_thread called\n", - PyThread_get_thread_ident())); - if (!initialized) - exit(0); - _endthread(); -} - -/* - * Lock support. This is implemented with an event semaphore and critical - * sections to make it behave more like a posix mutex than its OS/2 - * counterparts. - */ - -typedef struct os2_lock_t { - int is_set; - HEV changed; -} *type_os2_lock; - -PyThread_type_lock -PyThread_allocate_lock(void) -{ -#if defined(PYCC_GCC) - _fmutex *sem = malloc(sizeof(_fmutex)); - if (!initialized) - PyThread_init_thread(); - dprintf(("%ld: PyThread_allocate_lock() -> %lx\n", - PyThread_get_thread_ident(), - (long)sem)); - if (_fmutex_create(sem, 0)) { - free(sem); - sem = NULL; - } - return (PyThread_type_lock)sem; -#else - APIRET rc; - type_os2_lock lock = (type_os2_lock)malloc(sizeof(struct os2_lock_t)); - - dprintf(("PyThread_allocate_lock called\n")); - if (!initialized) - PyThread_init_thread(); - - lock->is_set = 0; - - DosCreateEventSem(NULL, &lock->changed, 0, 0); - - dprintf(("%ld: PyThread_allocate_lock() -> %p\n", - PyThread_get_thread_ident(), - lock->changed)); - - return (PyThread_type_lock)lock; -#endif -} - -void -PyThread_free_lock(PyThread_type_lock aLock) -{ -#if !defined(PYCC_GCC) - type_os2_lock lock = (type_os2_lock)aLock; -#endif - - dprintf(("%ld: PyThread_free_lock(%p) called\n", - PyThread_get_thread_ident(),aLock)); - -#if defined(PYCC_GCC) - if (aLock) { - _fmutex_close((_fmutex *)aLock); - free((_fmutex *)aLock); - } -#else - DosCloseEventSem(lock->changed); - free(aLock); -#endif -} - -/* - * Return 1 on success if the lock was acquired - * - * and 0 if the lock was not acquired. - */ -int -PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag) -{ -#if !defined(PYCC_GCC) - int done = 0; - ULONG count; - PID pid = 0; - TID tid = 0; - type_os2_lock lock = (type_os2_lock)aLock; -#endif - - dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", - PyThread_get_thread_ident(), - aLock, - waitflag)); - -#if defined(PYCC_GCC) - /* always successful if the lock doesn't exist */ - if (aLock && - _fmutex_request((_fmutex *)aLock, waitflag ? 0 : _FMR_NOWAIT)) - return 0; -#else - while (!done) { - /* if the lock is currently set, we have to wait for - * the state to change - */ - if (lock->is_set) { - if (!waitflag) - return 0; - DosWaitEventSem(lock->changed, SEM_INDEFINITE_WAIT); - } - - /* enter a critical section and try to get the semaphore. If - * it is still locked, we will try again. - */ - if (DosEnterCritSec()) - return 0; - - if (!lock->is_set) { - lock->is_set = 1; - DosResetEventSem(lock->changed, &count); - done = 1; - } - - DosExitCritSec(); - } -#endif - - return 1; -} - -void -PyThread_release_lock(PyThread_type_lock aLock) -{ -#if !defined(PYCC_GCC) - type_os2_lock lock = (type_os2_lock)aLock; -#endif - - dprintf(("%ld: PyThread_release_lock(%p) called\n", - PyThread_get_thread_ident(), - aLock)); - -#if defined(PYCC_GCC) - if (aLock) - _fmutex_release((_fmutex *)aLock); -#else - if (!lock->is_set) { - dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", - PyThread_get_thread_ident(), - aLock, - GetLastError())); - return; - } - - if (DosEnterCritSec()) { - dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", - PyThread_get_thread_ident(), - aLock, - GetLastError())); - return; - } - - lock->is_set = 0; - DosPostEventSem(lock->changed); - - DosExitCritSec(); -#endif -} - -/* minimum/maximum thread stack sizes supported */ -#define THREAD_MIN_STACKSIZE 0x8000 /* 32kB */ -#define THREAD_MAX_STACKSIZE 0x2000000 /* 32MB */ - -/* set the thread stack size. - * Return 0 if size is valid, -1 otherwise. - */ -static int -_pythread_os2_set_stacksize(size_t size) -{ - /* set to default */ - if (size == 0) { - _pythread_stacksize = 0; - return 0; - } - - /* valid range? */ - if (size >= THREAD_MIN_STACKSIZE && size < THREAD_MAX_STACKSIZE) { - _pythread_stacksize = size; - return 0; - } - - return -1; -} - -#define THREAD_SET_STACKSIZE(x) _pythread_os2_set_stacksize(x) |