-/* Copyright (c) 2005-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2005-2021. The SimGrid Team. All rights reserved. */
/* 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 <cstddef>
-#include <cstdlib>
-#include <cstring>
-
-#include <vector>
-
-// Try to detect and use the C++ intanium ABI for name demangling:
-#ifdef __GXX_ABI_VERSION
-#include <cxxabi.h>
-#endif
+#include "src/internal_config.h"
-#include "simgrid/simix.h" /* SIMIX_process_self_get_name() */
-#include <xbt/backtrace.h>
#include <xbt/backtrace.hpp>
-#include <xbt/log.h>
+#include <xbt/string.hpp>
#include <xbt/sysdep.h>
+#include <xbt/virtu.h>
-#include "src/internal_config.h"
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_backtrace, xbt, "Backtrace");
-
-static bool startWith(std::string str, const char* prefix)
-{
- return strncmp(str.c_str(), prefix, strlen(prefix)) == 0;
-}
+#include <cstdio>
+#include <cstdlib>
+#include <sstream>
-void xbt_backtrace_display(xbt_backtrace_location_t* loc, std::size_t count)
-{
-#ifdef HAVE_BACKTRACE
- std::vector<std::string> backtrace = simgrid::xbt::resolve_backtrace(loc, count);
- if (backtrace.empty()) {
- fprintf(stderr, "(backtrace not set)\n");
- return;
- }
- fprintf(stderr, "Backtrace (displayed in process %s):\n", SIMIX_process_self_get_name());
- for (std::string const& s : backtrace) {
- if (startWith(s, "xbt_backtrace_display_current"))
- continue;
+// Try to detect and use the C++ itanium ABI for name demangling:
+#ifdef __GXX_ABI_VERSION
+#include <cxxabi.h>
+#endif
- std::fprintf(stderr, "---> '%s'\n", s.c_str());
- if (startWith(s, "SIMIX_simcall_handle") ||
- startWith(s, "simgrid::xbt::MainFunction") /* main used with thread factory */)
- break;
- }
-#else
- XBT_ERROR("Cannot display backtrace when compiled without libunwind.");
+#if HAVE_BOOST_STACKTRACE_BACKTRACE
+#define BOOST_STACKTRACE_USE_BACKTRACE
+#include <boost/stacktrace.hpp>
+#elif HAVE_BOOST_STACKTRACE_ADDR2LINE
+#define BOOST_STACKTRACE_USE_ADDR2LINE
+#include <boost/stacktrace.hpp>
#endif
-}
/** @brief show the backtrace of the current point (lovely while debugging) */
void xbt_backtrace_display_current()
{
- 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);
+ simgrid::xbt::Backtrace().display();
}
namespace simgrid {
namespace xbt {
-std::unique_ptr<char, void(*)(void*)> demangle(const char* name)
+std::unique_ptr<char, std::function<void(char*)>> demangle(const char* name)
{
#ifdef __GXX_ABI_VERSION
int status;
- auto res = std::unique_ptr<char, void(*)(void*)>(
- abi::__cxa_demangle(name, nullptr, nullptr, &status),
- std::free
- );
+ std::unique_ptr<char, std::function<void(char*)>> res(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);
+ return std::unique_ptr<char, std::function<void(char*)>>(xbt_strdup(name), &xbt_free_f);
}
-std::vector<xbt_backtrace_location_t> backtrace()
+class BacktraceImpl {
+#if HAVE_BOOST_STACKTRACE_BACKTRACE || HAVE_BOOST_STACKTRACE_ADDR2LINE
+ const boost::stacktrace::stacktrace st = boost::stacktrace::stacktrace();
+public:
+ std::string resolve() const
+ {
+ std::stringstream ss;
+ ss << st;
+ return ss.str();
+ }
+#else
+public:
+ std::string resolve() const { return ""; } // fallback value
+#endif
+};
+
+Backtrace::Backtrace() : impl_(std::make_shared<BacktraceImpl>()) {}
+
+std::string Backtrace::resolve() const
{
- const std::size_t size = 10;
- xbt_backtrace_location_t loc[size];
- size_t used = xbt_backtrace_current(loc, size);
- return std::vector<xbt_backtrace_location_t>(loc, loc + used);
+ return impl_->resolve();
}
-}
+void Backtrace::display() const
+{
+ std::string backtrace = resolve();
+ std::fprintf(stderr, "Backtrace (displayed in actor %s):\n%s\n", xbt_procname(),
+ backtrace.empty() ? "(backtrace not set -- did you install Boost.Stacktrace?)" : backtrace.c_str());
}
-#if HAVE_BACKTRACE && HAVE_EXECINFO_H && HAVE_POPEN && defined(ADDR2LINE)
-# include "src/xbt/backtrace_linux.cpp"
-#else
-# include "src/xbt/backtrace_dummy.cpp"
-#endif
+} // namespace xbt
+} // namespace simgrid
