Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-31 13:41:24 +00:00
Code Issues Projects Releases Packages Wiki Activity

Remove the unused & broken PyThread_*_sema() functions and related constants.

Browse source 
This closes SF patch #504215.
This commit is contained in:
Fred Drake 2002-01-19 22:02:55 +00:00
parent 72c3bf076f
commit 7bb1c9a11d
11 changed files with 0 additions and 557 deletions
Download patch file Download diff file Expand all files Collapse all files

7
Include/pythread.h
View file

@ -25,13 +25,6 @@ DL_IMPORT(int) PyThread_acquire_lock(PyThread_type_lock, int);
#define NOWAIT_LOCK 0 #define NOWAIT_LOCK 0
DL_IMPORT(void) PyThread_release_lock(PyThread_type_lock); DL_IMPORT(void) PyThread_release_lock(PyThread_type_lock);
DL_IMPORT(PyThread_type_sema) PyThread_allocate_sema(int);
DL_IMPORT(void) PyThread_free_sema(PyThread_type_sema);
DL_IMPORT(int) PyThread_down_sema(PyThread_type_sema, int);
#define WAIT_SEMA 1
#define NOWAIT_SEMA 0
DL_IMPORT(void) PyThread_up_sema(PyThread_type_sema);
#ifndef NO_EXIT_PROG #ifndef NO_EXIT_PROG
DL_IMPORT(void) PyThread_exit_prog(int); DL_IMPORT(void) PyThread_exit_prog(int);
DL_IMPORT(void) PyThread__PyThread_exit_prog(int); DL_IMPORT(void) PyThread__PyThread_exit_prog(int);

70
Python/thread_beos.h
View file

@ -285,73 +285,3 @@ void PyThread_release_lock( PyThread_type_lock lock )
return; return;
} }
} }
/* ----------------------------------------------------------------------
* Semaphore support.
*
* Guido says not to implement this because it's not used anywhere;
* I'll do it anyway, you never know when it might be handy, and it's
* easy...
*/
PyThread_type_sema PyThread_allocate_sema( int value )
{
sem_id sema;
dprintf(("PyThread_allocate_sema called\n"));
sema = create_sem( value, "python semaphore" );
if( sema < B_NO_ERROR ) {
/* TODO: that's bad, raise an exception */
return 0;
}
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void PyThread_free_sema( PyThread_type_sema sema )
{
status_t retval;
dprintf(("PyThread_free_sema(%p) called\n", sema));
retval = delete_sem( (sem_id)sema );
if( retval != B_NO_ERROR ) {
/* TODO: that's bad, raise an exception */
return;
}
}
int PyThread_down_sema( PyThread_type_sema sema, int waitflag )
{
status_t retval;
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
if( waitflag ) {
retval = acquire_sem( (sem_id)sema );
} else {
retval = acquire_sem_etc( (sem_id)sema, 1, B_TIMEOUT, 0 );
}
if( retval != B_NO_ERROR ) {
/* TODO: that's bad, raise an exception */
return 0;
}
dprintf(("PyThread_down_sema(%p) return\n", sema));
return -1;
}
void PyThread_up_sema( PyThread_type_sema sema )
{
status_t retval;
dprintf(("PyThread_up_sema(%p)\n", sema));
retval = release_sem( (sem_id)sema );
if( retval != B_NO_ERROR ) {
/* TODO: that's bad, raise an exception */
return;
}
}

46
Python/thread_cthread.h
View file

@ -154,49 +154,3 @@ PyThread_release_lock(PyThread_type_lock lock)
dprintf(("PyThread_release_lock(%p) called\n", lock)); dprintf(("PyThread_release_lock(%p) called\n", lock));
mutex_unlock((mutex_t )lock); mutex_unlock((mutex_t )lock);
} }
/*
* Semaphore support.
*
* This implementation is ripped directly from the pthreads implementation.
* Which is to say that it is 100% non-functional at this time.
*
* Assuming the page is still up, documentation can be found at:
*
* http://www.doc.ic.ac.uk/~mac/manuals/solaris-manual-pages/solaris/usr/man/man2/_lwp_sema_wait.2.html
*
* Looking at the man page, it seems that one could easily implement a
* semaphore using a condition.
*
*/
PyThread_type_sema
PyThread_allocate_sema(int value)
{
char *sema = 0;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void
PyThread_free_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%p) called\n", sema));
}
int
PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
dprintf(("PyThread_down_sema(%p) return\n", sema));
return -1;
}
void
PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
}

34
Python/thread_foobar.h
View file

@ -113,37 +113,3 @@ PyThread_release_lock(PyThread_type_lock lock)
{ {
dprintf(("PyThread_release_lock(%p) called\n", lock)); dprintf(("PyThread_release_lock(%p) called\n", lock));
} }
/*
* Semaphore support.
*/
PyThread_type_sema
PyThread_allocate_sema(int value)
{
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void
PyThread_free_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%p) called\n", sema));
}
int
PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
dprintf(("PyThread_down_sema(%p) return\n", sema));
return -1;
}
void
PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
}

31
Python/thread_lwp.h
View file

@ -147,34 +147,3 @@ void PyThread_release_lock(PyThread_type_lock lock)
cv_broadcast(((struct lock *) lock)->lock_condvar); cv_broadcast(((struct lock *) lock)->lock_condvar);
mon_exit(((struct lock *) lock)->lock_monitor); mon_exit(((struct lock *) lock)->lock_monitor);
} }
/*
* Semaphore support.
*/
PyThread_type_sema PyThread_allocate_sema(int value)
{
PyThread_type_sema sema = 0;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void PyThread_free_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%p) called\n", sema));
}
int PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
dprintf(("PyThread_down_sema(%p) return\n", sema));
return -1;
}
void PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
}

53
Python/thread_nt.h
View file

@ -319,56 +319,3 @@ void PyThread_release_lock(PyThread_type_lock aLock)
if (!(aLock && LeaveNonRecursiveMutex((PNRMUTEX) aLock))) if (!(aLock && LeaveNonRecursiveMutex((PNRMUTEX) aLock)))
dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError())); 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)
{
HANDLE aSemaphore;
dprintf(("%ld: PyThread_allocate_sema called\n", PyThread_get_thread_ident()));
if (!initialized)
PyThread_init_thread();
aSemaphore = CreateSemaphore( NULL, /* Security attributes */
value, /* Initial value */
INT_MAX, /* Maximum value */
NULL); /* Name of semaphore */
dprintf(("%ld: PyThread_allocate_sema() -> %p\n", PyThread_get_thread_ident(), aSemaphore));
return (PyThread_type_sema) aSemaphore;
}
void PyThread_free_sema(PyThread_type_sema aSemaphore)
{
dprintf(("%ld: PyThread_free_sema(%p) called\n", PyThread_get_thread_ident(), aSemaphore));
CloseHandle((HANDLE) aSemaphore);
}
/*
XXX must do something about waitflag
*/
int PyThread_down_sema(PyThread_type_sema aSemaphore, int waitflag)
{
DWORD waitResult;
dprintf(("%ld: PyThread_down_sema(%p) called\n", PyThread_get_thread_ident(), aSemaphore));
waitResult = WaitForSingleObject( (HANDLE) aSemaphore, INFINITE);
dprintf(("%ld: PyThread_down_sema(%p) return: %l\n", PyThread_get_thread_ident(), aSemaphore, waitResult));
return 0;
}
void PyThread_up_sema(PyThread_type_sema aSemaphore)
{
ReleaseSemaphore(
(HANDLE) aSemaphore, /* Handle of semaphore */
1, /* increment count by one */
NULL); /* not interested in previous count */
dprintf(("%ld: PyThread_up_sema(%p)\n", PyThread_get_thread_ident(), aSemaphore));
}

27
Python/thread_os2.h
View file

@ -209,30 +209,3 @@ void PyThread_release_lock(PyThread_type_lock aLock)
DosExitCritSec(); DosExitCritSec();
} }
/*
* 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));
}

87
Python/thread_pth.h
View file

@ -206,90 +206,3 @@ void PyThread_release_lock(PyThread_type_lock lock)
status = pth_cond_notify( &thelock->lock_released, 0 ); status = pth_cond_notify( &thelock->lock_released, 0 );
CHECK_STATUS("pth_cond_notify"); CHECK_STATUS("pth_cond_notify");
} }
/*
* Semaphore support.
*/
struct semaphore {
pth_mutex_t mutex;
pth_cond_t cond;
int value;
};
PyThread_type_sema PyThread_allocate_sema(int value)
{
struct semaphore *sema;
int status, error = 0;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
sema = (struct semaphore *) malloc(sizeof(struct semaphore));
if (sema != NULL) {
sema->value = value;
status = pth_mutex_init(&sema->mutex);
CHECK_STATUS("pth_mutex_init");
status = pth_cond_init(&sema->cond);
CHECK_STATUS("pth_mutex_init");
if (error) {
free((void *) sema);
sema = NULL;
}
}
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void PyThread_free_sema(PyThread_type_sema sema)
{
struct semaphore *thesema = (struct semaphore *) sema;
dprintf(("PyThread_free_sema(%p) called\n", sema));
free((void *) thesema);
}
int PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
int status, error = 0, success;
struct semaphore *thesema = (struct semaphore *) sema;
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
status = pth_mutex_acquire(&thesema->mutex, !waitflag, NULL);
CHECK_STATUS("pth_mutex_acquire");
if (waitflag) {
while (!error && thesema->value <= 0) {
status = pth_cond_await(&thesema->cond,
&thesema->mutex, NULL);
CHECK_STATUS("pth_cond_await");
}
}
if (error)
success = 0;
else if (thesema->value > 0) {
thesema->value--;
success = 1;
}
else
success = 0;
status = pth_mutex_release(&thesema->mutex);
CHECK_STATUS("pth_mutex_release");
dprintf(("PyThread_down_sema(%p) return\n", sema));
return success;
}
void PyThread_up_sema(PyThread_type_sema sema)
{
int status, error = 0;
struct semaphore *thesema = (struct semaphore *) sema;
dprintf(("PyThread_up_sema(%p)\n", sema));
status = pth_mutex_acquire(&thesema->mutex, 0, NULL);
CHECK_STATUS("pth_mutex_acquire");
thesema->value++;
status = pth_cond_notify(&thesema->cond, 1);
CHECK_STATUS("pth_cond_notify");
status = pth_mutex_release(&thesema->mutex);
CHECK_STATUS("pth_mutex_release");
}

98
Python/thread_pthread.h
View file

@ -405,101 +405,3 @@ PyThread_release_lock(PyThread_type_lock lock)
status = pthread_cond_signal( &thelock->lock_released ); status = pthread_cond_signal( &thelock->lock_released );
CHECK_STATUS("pthread_cond_signal"); CHECK_STATUS("pthread_cond_signal");
} }
/*
* Semaphore support.
*/
struct semaphore {
pthread_mutex_t mutex;
pthread_cond_t cond;
int value;
};
PyThread_type_sema
PyThread_allocate_sema(int value)
{
struct semaphore *sema;
int status, error = 0;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
sema = (struct semaphore *) malloc(sizeof(struct semaphore));
if (sema != NULL) {
sema->value = value;
status = pthread_mutex_init(&sema->mutex,
pthread_mutexattr_default);
CHECK_STATUS("pthread_mutex_init");
status = pthread_cond_init(&sema->cond,
pthread_condattr_default);
CHECK_STATUS("pthread_cond_init");
if (error) {
free((void *) sema);
sema = NULL;
}
}
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void
PyThread_free_sema(PyThread_type_sema sema)
{
int status, error = 0;
struct semaphore *thesema = (struct semaphore *) sema;
dprintf(("PyThread_free_sema(%p) called\n", sema));
status = pthread_cond_destroy(&thesema->cond);
CHECK_STATUS("pthread_cond_destroy");
status = pthread_mutex_destroy(&thesema->mutex);
CHECK_STATUS("pthread_mutex_destroy");
free((void *) thesema);
}
int
PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
int status, error = 0, success;
struct semaphore *thesema = (struct semaphore *) sema;
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
status = pthread_mutex_lock(&thesema->mutex);
CHECK_STATUS("pthread_mutex_lock");
if (waitflag) {
while (!error && thesema->value <= 0) {
status = pthread_cond_wait(&thesema->cond,
&thesema->mutex);
CHECK_STATUS("pthread_cond_wait");
}
}
if (error)
success = 0;
else if (thesema->value > 0) {
thesema->value--;
success = 1;
}
else
success = 0;
status = pthread_mutex_unlock(&thesema->mutex);
CHECK_STATUS("pthread_mutex_unlock");
dprintf(("PyThread_down_sema(%p) return\n", sema));
return success;
}
void
PyThread_up_sema(PyThread_type_sema sema)
{
int status, error = 0;
struct semaphore *thesema = (struct semaphore *) sema;
dprintf(("PyThread_up_sema(%p)\n", sema));
status = pthread_mutex_lock(&thesema->mutex);
CHECK_STATUS("pthread_mutex_lock");
thesema->value++;
status = pthread_cond_signal(&thesema->cond);
CHECK_STATUS("pthread_cond_signal");
status = pthread_mutex_unlock(&thesema->mutex);
CHECK_STATUS("pthread_mutex_unlock");
}

44
Python/thread_sgi.h
View file

@ -378,50 +378,6 @@ void PyThread_release_lock(PyThread_type_lock lock)
perror("usunsetlock"); perror("usunsetlock");
} }
/*
* Semaphore support.
*/
PyThread_type_sema PyThread_allocate_sema(int value)
{
usema_t *sema;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
if ((sema = usnewsema(shared_arena, value)) == NULL)
perror("usnewsema");
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void PyThread_free_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%p) called\n", sema));
usfreesema((usema_t *) sema, shared_arena);
}
int PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
int success;
dprintf(("PyThread_down_sema(%p) called\n", sema));
if (waitflag)
success = uspsema((usema_t *) sema);
else
success = uscpsema((usema_t *) sema);
if (success < 0)
perror(waitflag ? "uspsema" : "uscpsema");
dprintf(("PyThread_down_sema(%p) return\n", sema));
return success;
}
void PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
if (usvsema((usema_t *) sema) < 0)
perror("usvsema");
}
/* /*
* Per-thread data ("key") support. * Per-thread data ("key") support.
*/ */

60
Python/thread_solaris.h
View file

@ -174,63 +174,3 @@ PyThread_release_lock(PyThread_type_lock lock)
if (mutex_unlock((mutex_t *) lock)) if (mutex_unlock((mutex_t *) lock))
perror("mutex_unlock"); perror("mutex_unlock");
} }
/*
* Semaphore support.
*/
PyThread_type_sema
PyThread_allocate_sema(int value)
{
sema_t *sema;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
sema = (sema_t *) malloc(sizeof(sema_t));
if (sema_init(sema, value, USYNC_THREAD, 0)) {
perror("sema_init");
free((void *) sema);
sema = 0;
}
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void
PyThread_free_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%p) called\n", sema));
if (sema_destroy((sema_t *) sema))
perror("sema_destroy");
free((void *) sema);
}
int
PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
int success;
dprintf(("PyThread_down_sema(%p) called\n", sema));
if (waitflag)
success = sema_wait((sema_t *) sema);
else
success = sema_trywait((sema_t *) sema);
if (success < 0) {
if (errno == EBUSY)
success = 0;
else
perror("sema_wait");
}
else
success = !success;
dprintf(("PyThread_down_sema(%p) return %d\n", sema, success));
return success;
}
void
PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
if (sema_post((sema_t *) sema))
perror("sema_post");
}