lyx_mirror/src/support/lassert.cpp
Peter Kümmel 1d5e483b44 move call stack code, add TODOs
(only disabled code is touched)

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@38494 a592a061-630c-0410-9148-cb99ea01b6c8
2011-04-25 09:14:50 +00:00

79 lines
1.7 KiB
C++

/**
* \file lassert.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author André Pönitz
* \author Peter Kümmel
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "support/debug.h"
#include <boost/assert.hpp>
//#define LYX_CALLSTACK_PRINTING
// must be linked with -rdynamic
#ifdef LYX_CALLSTACK_PRINTING
#include <cstdio>
#include <cstdlib>
#include <execinfo.h>
#include <cxxabi.h>
#endif
namespace lyx {
void doAssert(char const * expr, char const * file, long line)
{
// TODO Should we try to print the call stack before exiting?
LYXERR0("ASSERTION " << expr << " VIOLATED IN " << file << ":" << line);
// comment this out if not needed
BOOST_ASSERT(false);
}
//TODO Return as string, so call stack could be used in dialogs.
void 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++) {
std::string orig(messages[i]);
// extract mangled: bin/lyx2.0(_ZN3lyx7support7packageEv+0x32) [0x8a2e02b]
char* mangled = 0;
for (char *p = messages[i]; *p; ++p) {
if (*p == '(') {
*p = 0;
mangled = p + 1;
} else if (*p == '+') {
*p = 0;
break;
}
}
int err = 0;
char* demangled = abi::__cxa_demangle(mangled, 0, 0, &err);
if (err == 0) {
fprintf(stderr, "[bt]: (%d) %s %s\n", i, messages[i], demangled);
free((void*)demangled);
} else {
fprintf(stderr, "[bt]: (%d) %s\n", i, orig.c_str());
}
}
#endif
}
} // namespace lyx