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* cygwin.din: Add sem_close, sem_getvalue, sem_open and sem_timedwait.

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* pthread.cc (+mangle_sem_name): New function.
	(sem_open): Ditto.
	(sem_close: Ditto.
	(sem_timedwait): Ditto.
	(sem_getvalue): Ditto.
	* thread.cc (semaphore::semaphore): Rearrange member initialization.
	Use appropriate security attribute for process shared semaphores.
	(semaphore::semaphore): New constructor for named semaphores.
	(semaphore::~semaphore): Care for semaphore name.
	(semaphore::_post): Accomodate failing ReleaseSemaphore. Use value
	returned by ReleaseSemaphore vor currentvalue.
	(semaphore::_getvalue): New method.
	(semaphore::_timedwait): Ditto.
	(semaphore::_fixup_after_fork): Rearrange. Don't fail for process
	shared semaphores.
	(semaphore::open): New method.
	(semaphore::timedwait): Ditto.
	(semaphore::post): Fix return value.  Set errno appropriately.
	(semaphore::getvalue): New method.
	* thread.h (class semaphore): Add prototypes for open, getvalue,
	timedwait, _getvalue, _timedwait.  Add prototypes for new constructor.
	Add name member.
	* include/semaphore.h: Add prototypes for sem_open, sem_close,
	sem_timedwait and sem_getvalue.
	include/cygwin/version.h: Bump API minor number.
This commit is contained in:
Corinna Vinschen
2003-10-27 11:48:29 +00:00
parent d845665e0f
commit 072339664d
7 changed files with 297 additions and 19 deletions
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10
winsup/cygwin/thread.h
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@@ -710,15 +710,21 @@ public:
/* API calls */
static int init (sem_t * sem, int pshared, unsigned int value);
static int destroy (sem_t * sem);
static sem_t *open (const char *name, int oflag, mode_t mode,
unsigned int value);
static int wait (sem_t * sem);
static int trywait (sem_t * sem);
static int post (sem_t * sem);
static int getvalue (sem_t * sem, int *sval);
static int trywait (sem_t * sem);
static int timedwait (sem_t * sem, const struct timespec *abstime);
HANDLE win32_obj_id;
int shared;
long currentvalue;
char *name;
semaphore (int, unsigned int);
semaphore (const char *name, int oflag, mode_t mode, unsigned int value);
~semaphore ();
class semaphore * next;
@@ -731,7 +737,9 @@ public:
private:
void _wait ();
void _post ();
int _getvalue (int *sval);
int _trywait ();
int _timedwait (const struct timespec *abstime);
void _fixup_after_fork ();