From 0a48051f27e88ac7477ca5f3752c5ac2e6bf992a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Peter=20K=C3=BCmmel?= <syntheticpp@gmx.net>
Date: Mon, 11 Apr 2011 19:39:40 +0000
Subject: [PATCH] add debug function which prints the callstack to stderr,
 disabled by default

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@38334 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/support/debug.cpp | 28 ++++++++++++++++++++++++++++
 src/support/debug.h   |  3 +++
 2 files changed, 31 insertions(+)

diff --git a/src/support/debug.cpp b/src/support/debug.cpp
index 0f2cd2dbf4..11dd243e1a 100644
--- a/src/support/debug.cpp
+++ b/src/support/debug.cpp
@@ -22,6 +22,15 @@
 #include <iostream>
 #include <iomanip>
 
+//#define LYX_CALLSTACK_PRINTING
+#ifdef LYX_CALLSTACK_PRINTING
+#include <stdio.h>
+#include <stdlib.h>
+#include <execinfo.h>
+#endif
+
+
+
 using namespace std;
 using namespace lyx::support;
 
@@ -242,4 +251,23 @@ LyXErr & operator<<(LyXErr & l, ios_base &(*t)(ios_base &))
 // The global instance
 LyXErr lyxerr;
 
+
+void Debug::printCallStack()
+{
+#ifdef LYX_CALLSTACK_PRINTING
+	const int depth = 50;
+	
+	// get void*'s for all entries on the stack
+	void* array[depth];
+	size_t size = backtrace(array, depth);
+	
+	char** messages = backtrace_symbols(array, size);
+	
+	for (size_t i = 0; i < size && messages != NULL; i++) {
+		fprintf(stderr, "[LyX's bt]: (%d) %s\n", i, messages[i]);
+	}
+#endif
+}
+
+
 } // namespace lyx
diff --git a/src/support/debug.h b/src/support/debug.h
index fc7f72eff4..3835242b36 100644
--- a/src/support/debug.h
+++ b/src/support/debug.h
@@ -124,6 +124,9 @@ namespace Debug {
 	/// Show all the possible tags that can be used for debugging
 	void showTags(std::ostream & os);
 
+	/// Print simple callstack to stderr
+	void printCallStack();
+
 } // namespace Debug
 
 
-- 
2.39.2