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- /* This code implemented by cvale@netcom.com */
-
- #define INCL_DOSPROCESS
- #define INCL_DOSSEMAPHORES
- #include "os2.h"
- #include "limits.h"
-
- #include "process.h"
-
- long PyThread_get_thread_ident(void);
-
-
- /*
- * Initialization of the C package, should not be needed.
- */
- static void
- PyThread__init_thread(void)
- {
- }
-
- /*
- * Thread support.
- */
- int
- PyThread_start_new_thread(void (*func)(void *), void *arg)
- {
- int aThread;
- int success = 1;
-
- aThread = _beginthread(func,NULL,65536,arg);
-
- if( aThread == -1 ) {
- success = 0;
- fprintf(stderr,"aThread failed == %d",aThread);
- dprintf(("_beginthread failed. return %ld\n", errno));
- }
-
- return success;
- }
-
- long
- PyThread_get_thread_ident(void)
- {
- PPIB pib;
- PTIB tib;
-
- if (!initialized)
- PyThread_init_thread();
-
- DosGetInfoBlocks(&tib,&pib);
- return tib->tib_ptib2->tib2_ultid;
- }
-
- static void
- do_PyThread_exit_thread(int no_cleanup)
- {
- dprintf(("%ld: PyThread_exit_thread called\n", PyThread_get_thread_ident()));
- if (!initialized)
- if (no_cleanup)
- _exit(0);
- else
- exit(0);
- _endthread();
- }
-
- void
- PyThread_exit_thread(void)
- {
- do_PyThread_exit_thread(0);
- }
-
- void
- PyThread__exit_thread(void)
- {
- do_PyThread_exit_thread(1);
- }
-
- #ifndef NO_EXIT_PROG
- static void
- do_PyThread_exit_prog(int status, int no_cleanup)
- {
- dprintf(("PyThread_exit_prog(%d) called\n", status));
- if (!initialized)
- if (no_cleanup)
- _exit(status);
- else
- exit(status);
- }
-
- void
- PyThread_exit_prog(int status)
- {
- do_PyThread_exit_prog(status, 0);
- }
-
- void
- PyThread__exit_prog(int status)
- {
- do_PyThread_exit_prog(status, 1);
- }
- #endif /* NO_EXIT_PROG */
-
- /*
- * Lock support. It has too be implemented as semaphores.
- * I [Dag] tried to implement it with mutex but I could find a way to
- * tell whether a thread already own the lock or not.
- */
- PyThread_type_lock
- PyThread_allocate_lock(void)
- {
- HMTX aLock;
- APIRET rc;
-
- dprintf(("PyThread_allocate_lock called\n"));
- if (!initialized)
- PyThread_init_thread();
-
- DosCreateMutexSem(NULL, /* Sem name */
- &aLock, /* the semaphore */
- 0, /* shared ? */
- 0); /* initial state */
-
- 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));
-
- DosCloseMutexSem((HMTX)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;
- ULONG rc, count;
- PID pid = 0;
- TID tid = 0;
-
- dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),
- aLock, waitflag));
-
- DosQueryMutexSem((HMTX)aLock,&pid,&tid,&count);
- if( tid == PyThread_get_thread_ident() ) { /* if we own this lock */
- success = 0;
- } else {
- rc = DosRequestMutexSem((HMTX) aLock,
- (waitflag == 1 ? SEM_INDEFINITE_WAIT : 0));
-
- if( rc != 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 ( DosReleaseMutexSem( (HMTX) aLock ) != 0 ) {
- dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n",
- PyThread_get_thread_ident(), aLock, GetLastError()));
- }
- }
-
- /*
- * Semaphore support.
- */
- PyThread_type_sema
- PyThread_allocate_sema(int value)
- {
- return (PyThread_type_sema) 0;
- }
-
- void
- PyThread_free_sema(PyThread_type_sema aSemaphore)
- {
-
- }
-
- int
- PyThread_down_sema(PyThread_type_sema aSemaphore, int waitflag)
- {
- return -1;
- }
-
- void
- PyThread_up_sema(PyThread_type_sema aSemaphore)
- {
- dprintf(("%ld: PyThread_up_sema(%p)\n", PyThread_get_thread_ident(), aSemaphore));
- }
-