From 9b8c0657d644440e3625167baf327d6b06f5b546 Mon Sep 17 00:00:00 2001
From: Thierry Vignaud <tv@mageia.org>
Date: Tue, 22 Nov 2011 20:35:24 +0000
Subject: (C_backtrace) introduce it in order to get a better GDB trace

---
 perl-install/c/stuff.xs.pl | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'perl-install/c')

diff --git a/perl-install/c/stuff.xs.pl b/perl-install/c/stuff.xs.pl
index 1dbc9686a..d3dfd41ab 100755
--- a/perl-install/c/stuff.xs.pl
+++ b/perl-install/c/stuff.xs.pl
@@ -37,6 +37,7 @@ print '
 #include <netinet/in.h>
 #include <linux/sockios.h>
 #include <linux/input.h>
+#include <execinfo.h>
 
 // for ethtool structs:
 typedef unsigned long long u64;
@@ -701,6 +702,34 @@ disk_add_partition(char * device_path, double start, double length, const char *
   OUTPUT:
   RETVAL
 
+#define BACKTRACE_DEPTH				20
+ 
+
+char*
+C_backtrace()
+  CODE:
+  static char buf[1024];
+  int nAddresses, i;
+  unsigned long idx = 0;
+  void * addresses[BACKTRACE_DEPTH];
+  char ** symbols = NULL;
+  nAddresses = backtrace(addresses, BACKTRACE_DEPTH);
+  symbols = backtrace_symbols(addresses, nAddresses);
+  if (symbols == NULL) {
+      idx += sprintf(buf+idx, "ERROR: Retrieving symbols failed.\n");
+  } else {
+      fprintf(stderr, "HERE 5\n");
+      /* dump stack trace */
+      for (i = 0; i < nAddresses; ++i)
+          idx += sprintf(buf+idx, "%d: %s\n", i, symbols[i]);
+  }
+  RETVAL = strdup(buf);
+  OUTPUT:
+  RETVAL
+
+
+
+
 ';
 
 @macros = (
-- 
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