From a28296e778ad464d2ba6289446668c3d0dcf1236 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sun, 13 Dec 2020 15:18:16 +0000 Subject: pthread: Move semaphore initialization for open to semaphoreP.h This allows to easily reuse all of the sem_open/sem_close/sem_unlink implementations in the various ports. --- nptl/semaphoreP.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'nptl/semaphoreP.h') diff --git a/nptl/semaphoreP.h b/nptl/semaphoreP.h index f25ba329d7..2f8757e1f0 100644 --- a/nptl/semaphoreP.h +++ b/nptl/semaphoreP.h @@ -17,6 +17,7 @@ . */ #include +#include #include "pthreadP.h" #define SEM_SHM_PREFIX "sem." @@ -42,6 +43,20 @@ extern int __sem_mappings_lock attribute_hidden; /* Comparison function for search in tree with existing mappings. */ extern int __sem_search (const void *a, const void *b) attribute_hidden; +static inline void __new_sem_open_init (struct new_sem *sem, unsigned value) +{ +#if __HAVE_64B_ATOMICS + sem->data = value; +#else + sem->value = value << SEM_VALUE_SHIFT; + sem->nwaiters = 0; +#endif + /* pad is used as a mutex on pre-v9 sparc and ignored otherwise. */ + sem->pad = 0; + + /* This always is a shared semaphore. */ + sem->private = FUTEX_SHARED; +} /* Prototypes of functions with multiple interfaces. */ extern int __new_sem_init (sem_t *sem, int pshared, unsigned int value); -- cgit 1.4.1