X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fbacktrace.c;h=c6829d77c19bda1feef4cec6ad8f58ae40266145;hb=3efb60637b9a6741e7e5b7f04e4daa4d2464d8b3;hp=d2d1e40e1353ea1d5d80446d06674eeed4fcbd75;hpb=28eec6e50c32c7e848835232aa321ad8fa30d987;p=sliver-openvswitch.git

diff --git a/lib/backtrace.c b/lib/backtrace.c
index d2d1e40e1..c6829d77c 100644
--- a/lib/backtrace.c
+++ b/lib/backtrace.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,17 +15,34 @@
  */
 
 #include <config.h>
+
 #include "backtrace.h"
+
 #include <errno.h>
 #include <inttypes.h>
 #include <stdbool.h>
 #include <stdio.h>
+
 #include "compiler.h"
 #include "vlog.h"
 
-VLOG_DEFINE_THIS_MODULE(backtrace)
+VLOG_DEFINE_THIS_MODULE(backtrace);
 
-static uintptr_t OVS_UNUSED
+#ifdef HAVE_BACKTRACE
+#include <execinfo.h>
+void
+backtrace_capture(struct backtrace *b)
+{
+    void *frames[BACKTRACE_MAX_FRAMES];
+    int i;
+
+    b->n_frames = backtrace(frames, BACKTRACE_MAX_FRAMES);
+    for (i = 0; i < b->n_frames; i++) {
+        b->frames[i] = (uintptr_t) frames[i];
+    }
+}
+#elif __GNUC__
+static uintptr_t
 get_max_stack(void)
 {
     static const char file_name[] = "/proc/self/maps";
@@ -96,3 +113,10 @@ backtrace_capture(struct backtrace *backtrace)
     }
     backtrace->n_frames = n;
 }
+#else  /* !HAVE_BACKTRACE && !__GNUC__ */
+void
+backtrace_capture(struct backtrace *backtrace)
+{
+    backtrace->n_frames = 0;
+}
+#endif