Merged signals-merge branch into trunk with the following changes:

* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
  handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
  support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
  of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
  [set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/shared/syscall_utils.h

@@ -1,18 +1,38 @@
 /*
- * Copyright 2008, Ingo Weinhold, [email protected].
+ * Copyright 2008-2011, Ingo Weinhold, [email protected].
  * Distributed under the terms of the MIT License.
  */
 #ifndef _SYSCALL_UTILS_H
 #define _SYSCALL_UTILS_H
 
+
 #define RETURN_AND_SET_ERRNO(err)			\
 	do {									\
-		__typeof(err) raseResult = (err);	\
-		if (raseResult < 0) {				\
-			errno = raseResult;				\
+		__typeof(err) __result = (err);		\
+		if (__result < 0) {					\
+			errno = __result;				\
 			return -1;						\
 		}									\
-		return raseResult;					\
-	} while (false)
+		return __result;					\
+	} while (0)
+
+#define RETURN_AND_TEST_CANCEL(err)			\
+	do {									\
+		__typeof(err) __result = (err);		\
+		pthread_testcancel();				\
+		return __result;					\
+	} while (0)
+
+#define RETURN_AND_SET_ERRNO_TEST_CANCEL(err)	\
+	do {										\
+		__typeof(err) __result = (err);			\
+		pthread_testcancel();					\
+		if (__result < 0) {						\
+			errno = __result;					\
+			return -1;							\
+		}										\
+		return __result;						\
+	} while (0)
+
 
 #endif	// _SYSCALL_UTILS_H