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authorUlrich Drepper <drepper@redhat.com>1999-04-15 13:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-04-15 13:54:57 +0000
commitf8afba91cf8bf8f8324c3c88b8c368e7c2bd5894 (patch)
treedbdd5f960cf217c76d495ba44173feafae9d184f /linuxthreads/semaphore.h
parenta5486962345290853d7d42ef4a799f16bd6764e2 (diff)
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Update.
* Versions.def: Add GLIBC_2.1.1 to libpthread. * iconvdata/Makefile (modules): Add KOI8-U. (distribute): Add koi8-u.c. (gen-8bit-gap-modules): Add koi8-u. * iconvdata/gconv-modules: Add KOI8-U entries. * iconvdata/koi8-u.c: New file. 1999-04-13 Thorsten Kukuk <kukuk@suse.de> * sunrpc/auth_des.c: 64bit fixes, security fixes. * sunrpc/auth_none.c: Pretty print. * sunrpc/auth_unix.c: Likewise. * sunrpc/authdes_prot.c: Likewise. * sunrpc/authuxprot.c: Likewise. * sunrpc/bindrsvprt.c: Likewise. * sunrpc/clnt_gen.c: Likewise. * sunrpc/rpc/xdr.h: Likewise. * sunrpc/rpc/auth_des.h: Add rpc_timeval struct. * sunrpc/rpc_cmsg.c: Don't use *long pointers. * sunrpc/rtime.c: Use new rpc_timeval. * sunrpc/svc_authux.c: Don't use *long pointers. * sunrpc/svcauth_des.c: Likewise + security fixes. * sunrpc/xdr_mem.c: Don't use *long pointers. * sunrpc/xdr_rec.c: Likewise. * sunrpc/xdr_sizeof.c: Likewise. * sunrpc/xdr_stdio.c: Likewise. 1999-04-15 Ulrich Drepper <drepper@cygnus.com>
Diffstat (limited to 'linuxthreads/semaphore.h')
-rw-r--r--linuxthreads/semaphore.h64
1 files changed, 51 insertions, 13 deletions
diff --git a/linuxthreads/semaphore.h b/linuxthreads/semaphore.h
index fe2b451..1d5f933 100644
--- a/linuxthreads/semaphore.h
+++ b/linuxthreads/semaphore.h
@@ -18,24 +18,62 @@
#include <features.h>
#include <sys/types.h>
-#include <limits.h>
+#ifndef _PTHREAD_DESCR_DEFINED
+/* Thread descriptors. Needed for `sem_t' definition. */
+typedef struct _pthread_descr_struct *_pthread_descr;
+# define _PTHREAD_DESCR_DEFINED
+#endif
-#define SEM_VALUE_MAX INT_MAX
-
-typedef struct {
- struct { long status; int spinlock; } sem_lock;
- int sem_value;
- _pthread_descr sem_waiting;
+/* System specific semaphore definition. */
+typedef struct
+{
+ struct
+ {
+ long int status;
+ int spinlock;
+ } __sem_lock;
+ int __sem_value;
+ _pthread_descr __sem_waiting;
} sem_t;
+
+
+/* Value returned if `sem_open' failed. */
+#define SEM_FAILED ((sem_t *) NULL)
+
+/* Maximum value the semaphore can have. */
+#define SEM_VALUE_MAX ((int) ((~0u) >> 1))
+
+
__BEGIN_DECLS
-extern int sem_init __P((sem_t *__sem, int __pshared, unsigned int __value));
-extern int sem_destroy __P((sem_t *__sem));
-extern int sem_wait __P((sem_t *__sem));
-extern int sem_trywait __P((sem_t *__sem));
-extern int sem_post __P((sem_t *__sem));
-extern int sem_getvalue __P((sem_t *__sem, int *__sval));
+/* Initialize semaphore object SEM to VALUE. If PSHARED then share it
+ with other processes. */
+extern int sem_init __P ((sem_t *__sem, int __pshared, unsigned int __value));
+
+/* Free resources associated with semaphore object SEM. */
+extern int sem_destroy __P ((sem_t *__sem));
+
+/* Open a named semaphore NAME with open flaot OFLAG. */
+extern sem_t *sem_open __P ((__const char *__name, int __oflag, ...));
+
+/* Close descriptor for named semaphore SEM. */
+extern int sem_close __P ((sem_t *__sem));
+
+/* Remove named semaphore NAME. */
+extern int sem_unlink __P ((__const char *__name));
+
+/* Wait for SEM being posted. */
+extern int sem_wait __P ((sem_t *__sem));
+
+/* Test whether SEM is posted. */
+extern int sem_trywait __P ((sem_t *__sem));
+
+/* Post SEM. */
+extern int sem_post __P ((sem_t *__sem));
+
+/* Get current value of SEM and store it in *SVAL. */
+extern int sem_getvalue __P ((sem_t *__sem, int *__sval));
__END_DECLS