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

	* 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.

1 files changed, 9 insertions, 1 deletions

diff --git a/winsup/cygwin/thread.h b/winsup/cygwin/thread.h
index 575310958..d6fffedb8 100644
--- a/winsup/cygwin/thread.h
+++ b/winsup/cygwin/thread.h
@@ -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 ();