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/*
* Copyright (C) 2000-2015 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2013-2014 John Emmas <john@creativepost.co.uk>
* Copyright (C) 2015-2019 Robin Gareus <robin@gareus.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __libpbd_stacktrace_h__
#define __libpbd_stacktrace_h__
#ifdef HAVE_WAFBUILD
#include "libpbd-config.h"
#endif
#include <iostream>
#include <ostream>
#include <glibmm/threads.h>
#include <list>
#ifdef HAVE_EXECINFO
#include <execinfo.h>
#include <cstdlib>
#endif
#include "pbd/libpbd_visibility.h"
namespace PBD {
LIBPBD_API void stacktrace (std::ostream& out, int levels = 0);
LIBPBD_API void trace_twb();
template<typename T>
class /*LIBPBD_API*/ thing_with_backtrace
{
public:
thing_with_backtrace () {
trace_twb();
#ifdef HAVE_EXECINFO
allocation_backtrace = new void*[50];
allocation_backtrace_size = backtrace (allocation_backtrace, 50);
#else
allocation_backtrace_size = 0;
#endif
Glib::Threads::Mutex::Lock lm (all_mutex);
all.push_back (this);
}
thing_with_backtrace (const thing_with_backtrace<T>& other) {
trace_twb();
#ifdef HAVE_EXECINFO
allocation_backtrace = new void*[50];
allocation_backtrace_size = backtrace (allocation_backtrace, 50);
#else
allocation_backtrace_size = 0;
#endif
Glib::Threads::Mutex::Lock lm (all_mutex);
all.push_back (this);
}
~thing_with_backtrace() {
if (allocation_backtrace_size) {
delete [] allocation_backtrace;
}
Glib::Threads::Mutex::Lock lm (all_mutex);
all.remove (this);
}
thing_with_backtrace<T>& operator= (const thing_with_backtrace<T>& other) {
/* no copyable members */
return *this;
}
static void peek_a_boo (std::ostream& stream) {
#ifdef HAVE_EXECINFO
typename std::list<thing_with_backtrace<T>*>::iterator x;
for (x = all.begin(); x != all.end(); ++x) {
char **strings;
size_t i;
strings = backtrace_symbols ((*x)->allocation_backtrace, (*x)->allocation_backtrace_size);
if (strings) {
stream << "--- ALLOCATED SHARED_PTR @ " << (*x) << std::endl;
for (i = 0; i < (*x)->allocation_backtrace_size && i < 50U; i++) {
stream << strings[i] << std::endl;
}
free (strings);
}
}
#else
stream << "execinfo not defined for this platform" << std::endl;
#endif
}
private:
void** allocation_backtrace;
int allocation_backtrace_size;
static std::list<thing_with_backtrace<T>* > all;
static Glib::Threads::Mutex all_mutex;
};
template<typename T> /*LIBPBD_API*/ std::list<PBD::thing_with_backtrace<T> *> PBD::thing_with_backtrace<T>::all;
template<typename T> /*LIBPBD_API*/ Glib::Threads::Mutex PBD::thing_with_backtrace<T>::all_mutex;
} // namespace PBD
#endif /* __libpbd_stacktrace_h__ */
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