-/* Copyright (c) 2005-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2005-2019. The SimGrid Team. All rights reserved. */
-#include <cstddef>
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "src/internal_config.h"
+#include "simgrid/simix.h" /* SIMIX_process_self_get_name() */
+#include <xbt/backtrace.hpp>
#include <xbt/log.h>
-#include <xbt/backtrace.h>
+#include <xbt/string.hpp>
+#include <xbt/sysdep.h>
-#include "src/internal_config.h"
+#include <cstddef>
+#include <cstdlib>
+#include <cstring>
+#include <fstream>
+#include <sstream>
+#include <sys/stat.h>
+#include <vector>
+
+#include <boost/algorithm/string.hpp>
+
+// Try to detect and use the C++ itanium ABI for name demangling:
+#ifdef __GXX_ABI_VERSION
+#include <cxxabi.h>
+#endif
-extern "C" {
+#if HAVE_BOOST_STACKTRACE
+#define BOOST_STACKTRACE_USE_BACKTRACE
+#include <boost/stacktrace.hpp>
+#endif
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_backtrace, xbt, "Backtrace");
+/** @brief show the backtrace of the current point (lovely while debugging) */
+void xbt_backtrace_display_current()
+{
+ simgrid::xbt::Backtrace().display();
}
-/** @brief show the backtrace of the current point (lovely while debuging) */
-void xbt_backtrace_display_current(void)
+namespace simgrid {
+namespace xbt {
+
+std::unique_ptr<char, void(*)(void*)> demangle(const char* name)
{
- const std::size_t size = 10;
- xbt_backtrace_location_t bt[size];
- size_t used = xbt_backtrace_current(bt, size);
- xbt_backtrace_display(bt, used);
+#ifdef __GXX_ABI_VERSION
+ int status;
+ auto res = std::unique_ptr<char, void (*)(void*)>(abi::__cxa_demangle(name, nullptr, nullptr, &status), &std::free);
+ if (res != nullptr)
+ return res;
+ // We did not manage to resolve this. Probably because this is not a mangled symbol:
+#endif
+ // Return the symbol:
+ return std::unique_ptr<char, void (*)(void*)>(xbt_strdup(name), &std::free);
}
-#if HAVE_BACKTRACE && HAVE_EXECINFO_H && HAVE_POPEN && defined(ADDR2LINE)
-# include "src/xbt/backtrace_linux.cpp"
-#else
-# include "src/xbt/backtrace_dummy.cpp"
+class BacktraceImpl {
+ short refcount_ = 1;
+
+public:
+ void ref() { refcount_++; }
+ bool unref()
+ {
+ refcount_--;
+ return refcount_ == 0;
+ }
+#if HAVE_BOOST_STACKTRACE
+ boost::stacktrace::stacktrace st;
+#endif
+};
+
+Backtrace::Backtrace()
+{
+#if HAVE_BOOST_STACKTRACE
+ impl_ = new BacktraceImpl();
+ impl_->st = boost::stacktrace::stacktrace();
#endif
+}
+Backtrace::Backtrace(const Backtrace& bt)
+{
+ impl_ = bt.impl_;
+ if (impl_)
+ impl_->ref();
+}
+
+Backtrace::~Backtrace()
+{
+ if (impl_ != nullptr && impl_->unref()) {
+ delete impl_;
+ }
+}
+
+std::string const Backtrace::resolve() const
+{
+ std::string result("");
+
+#if HAVE_BOOST_STACKTRACE
+ std::stringstream ss;
+ ss << impl_->st;
+ result.append(ss.str());
+#endif
+ return result;
+}
+
+void Backtrace::display() const
+{
+ std::string backtrace = resolve();
+ if (backtrace.empty()) {
+ fprintf(stderr, "(backtrace not set -- did you install Boost.Stacktrace?)\n");
+ return;
+ }
+ fprintf(stderr, "Backtrace (displayed in actor %s):\n", SIMIX_process_self_get_name());
+ std::fprintf(stderr, "%s\n", backtrace.c_str());
+}
+
+} // namespace xbt
+} // namespace simgrid
