Changeset 320 for trunk/include

Timestamp:

Mar 15, 2011, 8:59:48 PM (14 years ago)

Author:

katerina

Message:

Fix for ticket #237: Potential deadlock in sh_hash_hashdelete()

File:

• trunk/include/sh_pthread.h (modified) (2 diffs)

trunk/include/sh_pthread.h

@@ -23 +23 @@
         do {                                                               \
                 int oldtype;                                               \
+                int executeStack = 1;                                      \
                 pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &oldtype);  \
                 pthread_cleanup_push(sh_pthread_mutex_unlock, (void*)&(M));\
                 pthread_mutex_lock(&(M))
 
+#define SH_MUTEX_TRYLOCK(M)                                                \
+        do {                                                               \
+                int oldtype;                                               \
+                int executeStack = 0;                                      \
+                pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &oldtype);  \
+                pthread_cleanup_push(sh_pthread_mutex_unlock, (void*)&(M));\
+                pthread_mutex_trylock(&(M));                               \
+                executeStack = 1
 
 #define SH_MUTEX_UNLOCK(M)                                                 \
-                pthread_cleanup_pop(1);                                    \
+                pthread_cleanup_pop(executeStack);                         \
                 pthread_setcanceltype(oldtype, NULL);                      \
         } while (0)
@@ -147 +156 @@
 #define SH_MUTEX_EXTERN(M)                      extern void *SH_MUTEX_DUMMY_ ## M
 #define SH_MUTEX_LOCK(M)                        ((void)0)
+#define SH_MUTEX_TRYLOCK(M)                     ((void)0)
 #define SH_MUTEX_UNLOCK(M)                      ((void)0)
 #define SH_MUTEX_LOCK_UNSAFE(M)                 ((void)0)