-/* Copyright (c) 2005-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2005-2019. 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 "src/internal_config.h"
+
+#include "simgrid/simix.h" /* SIMIX_process_self_get_name() */
+#include <xbt/backtrace.hpp>
+#include <xbt/log.h>
+#include <xbt/string.hpp>
+#include <xbt/sysdep.h>
+
#include <cstddef>
#include <cstdlib>
-
+#include <cstring>
+#include <fstream>
+#include <sstream>
+#include <sys/stat.h>
#include <vector>
-// Try to detect and use the C++ intanium ABI for name demangling:
+#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
-#include <xbt/backtrace.h>
-#include <xbt/backtrace.hpp>
-#include <xbt/log.h>
-#include <xbt/sysdep.h>
-
-#include "src/internal_config.h"
-
-extern "C" {
+#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
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_backtrace, xbt, "Backtrace");
-}
-
-/** @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];
- 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, NULL, NULL, &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:
+ // 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 {
+ short refcount_ = 1;
+
+public:
+ void ref() { refcount_++; }
+ bool unref()
+ {
+ refcount_--;
+ if (refcount_ == 0) {
+ delete this;
+ return true;
+ } else {
+ return false;
+ }
+ }
+#if HAVE_BOOST_STACKTRACE_BACKTRACE || HAVE_BOOST_STACKTRACE_ADDR2LINE
+ boost::stacktrace::stacktrace st;
+#endif
+};
+
+Backtrace::Backtrace()
{
- 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);
+#if HAVE_BOOST_STACKTRACE_BACKTRACE || HAVE_BOOST_STACKTRACE_ADDR2LINE
+ impl_ = new BacktraceImpl();
+ impl_->st = boost::stacktrace::stacktrace();
+#endif
+}
+Backtrace::Backtrace(const Backtrace& bt)
+{
+ impl_ = bt.impl_;
+ if (impl_)
+ impl_->ref();
+}
+
+Backtrace::Backtrace(Backtrace&& bt)
+{
+ impl_ = bt.impl_;
+ bt.impl_ = nullptr;
}
+Backtrace& Backtrace::operator=(const Backtrace& rhs)
+{
+ if (this != &rhs) {
+ if (impl_)
+ impl_->unref();
+ impl_ = rhs.impl_;
+ if (impl_)
+ impl_->ref();
+ }
+ return *this;
}
+
+Backtrace& Backtrace::operator=(Backtrace&& rhs)
+{
+ if (this != &rhs) {
+ if (impl_)
+ impl_->unref();
+ impl_ = rhs.impl_;
+ rhs.impl_ = nullptr;
+ }
+ return *this;
}
-#if HAVE_BACKTRACE && HAVE_EXECINFO_H && HAVE_POPEN && defined(ADDR2LINE)
-# include "src/xbt/backtrace_linux.cpp"
-#else
-# include "src/xbt/backtrace_dummy.cpp"
+Backtrace::~Backtrace()
+{
+ if (impl_)
+ impl_->unref();
+}
+
+std::string const Backtrace::resolve() const
+{
+ std::string result("");
+
+#if HAVE_BOOST_STACKTRACE_BACKTRACE || HAVE_BOOST_STACKTRACE_ADDR2LINE
+ 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
