From 848841973a5c5b8d2de336ed32f5b4ab80ca8d79 Mon Sep 17 00:00:00 2001
From: russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b>
Date: Wed, 14 May 2008 21:32:00 +0000
Subject: Add ast_assert(), which can be used to handle fatal errors.  It is
 only compiled in if dev-mode is enabled, and only aborts if DO_CRASH is
 defined. (inspired by issue #12650)

git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.4@116463 f38db490-d61c-443f-a65b-d21fe96a405b
---
 include/asterisk/channel.h |  7 -------
 include/asterisk/utils.h   | 27 +++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 7 deletions(-)

(limited to 'include/asterisk')

diff --git a/include/asterisk/channel.h b/include/asterisk/channel.h
index 1172274f7..41371ccc0 100644
--- a/include/asterisk/channel.h
+++ b/include/asterisk/channel.h
@@ -1340,17 +1340,10 @@ static inline int ast_select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds,
 #endif
 }
 
-#ifdef DO_CRASH
-#define CRASH do { fprintf(stderr, "!! Forcing immediate crash a-la abort !!\n"); *((int *)0) = 0; } while(0)
-#else
-#define CRASH do { } while(0)
-#endif
-
 #define CHECK_BLOCKING(c) do { 	 \
 	if (ast_test_flag(c, AST_FLAG_BLOCKING)) {\
 		if (option_debug) \
 			ast_log(LOG_DEBUG, "Thread %ld Blocking '%s', already blocked by thread %ld in procedure %s\n", (long) pthread_self(), (c)->name, (long) (c)->blocker, (c)->blockproc); \
-		CRASH; \
 	} else { \
 		(c)->blocker = pthread_self(); \
 		(c)->blockproc = __PRETTY_FUNCTION__; \
diff --git a/include/asterisk/utils.h b/include/asterisk/utils.h
index 1e5203671..44994f4c0 100644
--- a/include/asterisk/utils.h
+++ b/include/asterisk/utils.h
@@ -562,4 +562,31 @@ void ast_enable_packet_fragmentation(int sock);
 
 #define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
 
+#ifdef AST_DEVMODE
+#define ast_assert(a) _ast_assert(a, # a, __FILE__, __LINE__, __PRETTY_FUNCTION__)
+static void force_inline _ast_assert(int condition, const char *condition_str, 
+	const char *file, int line, const char *function)
+{
+	if (__builtin_expect(!condition, 1)) {
+		/* Attempt to put it into the logger, but hope that at least someone saw the
+		 * message on stderr ... */
+		ast_log(LOG_ERROR, "FRACK!, Failed assertion %s (%d) at line %d in %s of %s\n",
+			condition_str, condition, line, function, file);
+		fprintf(stderr, "FRACK!, Failed assertion %s (%d) at line %d in %s of %s\n",
+			condition_str, condition, line, function, file);
+		/* Give the logger a chance to get the message out, just in case we abort(), or
+		 * Asterisk crashes due to whatever problem just happened after we exit ast_assert(). */
+		usleep(1);
+#ifdef DO_CRASH
+		abort();
+		/* Just in case abort() doesn't work or something else super silly,
+		 * and for Qwell's amusement. */
+		*((int*)0)=0;
+#endif
+	}
+}
+#else
+#define ast_assert(a)
+#endif
+
 #endif /* _ASTERISK_UTILS_H */
-- 
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