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rAKA/common/aka_error.cc
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aka_error.cc
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/**
* @file aka_error.cc
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @date Sun Sep 5 21:03:37 2010
*
* @brief
*
* @section LICENSE
*
* <insert license here>
*
*/
/* -------------------------------------------------------------------------- */
#include <csignal>
#include <cerrno>
#include <execinfo.h>
#include <cxxabi.h>
/* -------------------------------------------------------------------------- */
#include "aka_error.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
namespace debug {
/* ------------------------------------------------------------------------ */
void setDebugLevel(const DebugLevel & level) {
_debug_level = level;
}
/* ------------------------------------------------------------------------ */
void setParallelContext(int rank, int size) {
std::stringstream sstr;
sstr << "[" << std::setfill(' ') << std::right << std::setw(3) << (rank + 1) << "/" << size << "] ";
_parallel_context = sstr.str();
}
/* ------------------------------------------------------------------------ */
void initSignalHandler() {
struct sigaction action;
action.sa_handler = &printBacktrace;
sigemptyset(&(action.sa_mask));
action.sa_flags = SA_RESETHAND;
sigaction(SIGSEGV, &action, NULL);
}
/* ------------------------------------------------------------------------ */
static std::string demangle(const char* symbol) {
std::string trace(symbol);
std::string::size_type begin = trace.find_first_of('(') + 1;
std::string::size_type end = trace.find_last_of('+');
if (begin != std::string::npos && end != std::string::npos) {
std::string sub_trace = trace.substr(begin, end - begin);
int status;
size_t size;
std::string result;
char * demangled_name;
if ((demangled_name = abi::__cxa_demangle(sub_trace.c_str(), NULL, &size, &status)) != NULL) {
result = demangled_name;
free(demangled_name);
}
std::stringstream result_sstr;
result_sstr << trace.substr(0, begin) << result << trace.substr(end);
return result_sstr.str();
}
return trace;
}
/* ------------------------------------------------------------------------ */
void printBacktrace(int sig) {
AKANTU_DEBUG_INFO("Caught signal " << sig << "!");
void *array[10];
size_t size;
char **strings;
size_t i;
size = backtrace (array, 10);
strings = backtrace_symbols (array, size);
std::cerr << "BACKTRACE : " << size - 1 << " stack frames." <<std::endl;
/// -1 to remove the call to the printBacktrace function
for (i = 1; i < size; i++)
std::cerr << " " << demangle(strings[i]) << std::endl;;
free (strings);
std::cerr << "END BACKTRACE" << std::endl;
int * segfault = NULL;
*segfault = 0;
}
}
__END_AKANTU__
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