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authorMatthias Benkard <code@mail.matthias.benkard.de>2008-02-07 23:11:34 +0100
committerMatthias Benkard <code@mail.matthias.benkard.de>2008-02-07 23:11:34 +0100
commit742c6f32e038c90967e15f4740fcdacda1ad0f1f (patch)
treea9ec7095d62dcdfcd0b6f49d7d5a128f5ba0dbf1 /Objective-C/libobjcl.h
parent0659e7a29136823cba53c05fa94df2db29a3ddbc (diff)
Objective-C layer: Implement locking using semaphores.
darcs-hash:3a1f9d1f6597b32c20efcd7ab2cf2721c1bdfe43
Diffstat (limited to 'Objective-C/libobjcl.h')
-rw-r--r--Objective-C/libobjcl.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/Objective-C/libobjcl.h b/Objective-C/libobjcl.h
index 270af45..afe9f56 100644
--- a/Objective-C/libobjcl.h
+++ b/Objective-C/libobjcl.h
@@ -43,6 +43,18 @@ typedef Ivar IVAR_T;
typedef struct objc_ivar *IVAR_T;
#endif
+#ifdef HAVE_SYS_SEM_H
+#include <sys/sem.h>
+/* According to the Single Unix Specification, Version 3, the semun
+ union type must be defined by the application writer as follows: */
+union semun
+{
+ int val; /* Value for SETVAL */
+ struct semid_ds *buf; /* Buffer for IPC_STAT, IPC_SET */
+ unsigned short *array; /* Array for GETALL, SETALL */
+};
+#endif
+
extern NSException *objcl_oom_exception;
extern id objcl_current_exception;
extern void *objcl_current_exception_lock;
@@ -159,3 +171,6 @@ objcl_acquire_lock (void *lock);
void
objcl_release_lock (void *lock);
+
+void
+objcl_initialise_lock (void **lock);