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