set the DIALSTATUS variable to contain "INVALIDARGS" when the dial application

exits early because of invalid arguments instead of just leaving it empty.
(issue #8975)


git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.2@53133 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 27 insertions, 0 deletions

diff --git a/include/asterisk/lock.h b/include/asterisk/lock.h
index dc9cf9a28..67deba4dd 100644
--- a/include/asterisk/lock.h
+++ b/include/asterisk/lock.h
@@ -666,4 +666,31 @@ static inline int ast_cond_timedwait(ast_cond_t *cond, ast_mutex_t *t, const str
 #define pthread_create __use_ast_pthread_create_instead__
 #endif
 
+int ast_atomic_fetchadd_int_slow(volatile int *p, int v);
+
+#include "asterisk/inline_api.h"
+
+#if defined (__i386__)
+AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v),
+{
+	__asm __volatile (
+	"       lock   xaddl   %0, %1 ;        "
+	: "+r" (v),                     /* 0 (result) */   
+	  "=m" (*p)                     /* 1 */
+	: "m" (*p));                    /* 2 */
+	return (v);
+})
+#else   /* low performance version in utils.c */
+AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v),
+{
+	return ast_atomic_fetchadd_int_slow(p, v);
+})
+#endif
+
+AST_INLINE_API(int ast_atomic_dec_and_test(volatile int *p),
+{
+	int a = ast_atomic_fetchadd_int(p, -1);
+	return a == 1; /* true if the value is 0 now (so it was 1 previously) */
+})
+
 #endif /* _ASTERISK_LOCK_H */