-/* Copyright (c) 2005-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2005-2018. 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>
#include <cxxabi.h>
#endif
+#include "simgrid/simix.h" /* SIMIX_process_self_get_name() */
#include <xbt/backtrace.h>
#include <xbt/backtrace.hpp>
#include <xbt/log.h>
#include "src/internal_config.h"
-extern "C" {
-
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;
+}
+
+void xbt_backtrace_display(xbt_backtrace_location_t* loc, std::size_t count)
+{
+#ifdef HAVE_BACKTRACE
+ std::vector<std::string> backtrace = simgrid::xbt::resolveBacktrace(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;
+
+ 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.");
+#endif
}
-/** @brief show the backtrace of the current point (lovely while debuging) */
-void xbt_backtrace_display_current(void)
+/** @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];
#ifdef __GXX_ABI_VERSION
int status;
auto res = std::unique_ptr<char, void(*)(void*)>(
- abi::__cxa_demangle(name, NULL, NULL, &status),
+ 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:
+ // 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);