// Copyright (c) 2016, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "common/exception.h"
#include "misc_log_ex.h"
#define UNW_LOCAL_ONLY
#include <libunwind.h>
#include <cxxabi.h>
namespace tools
{
void log_stack_trace(const char *msg)
{
#ifdef HAVE_LIBUNWIND
unw_context_t ctx;
unw_cursor_t cur;
unw_word_t ip, off;
unsigned level;
char sym[512], *dsym;
int status;
if (msg)
LOG_PRINT_L0(msg);
LOG_PRINT_L0("Unwinded call stack:");
if (unw_getcontext(&ctx) < 0) {
LOG_PRINT_L0("Failed to create unwind context");
return;
}
if (unw_init_local(&cur, &ctx) < 0) {
LOG_PRINT_L0("Failed to find the first unwind frame");
return;
}
for (level = 1; level < 999; ++level) { // 999 for safety
int ret = unw_step(&cur);
if (ret < 0) {
LOG_PRINT_L0("Failed to find the next frame");
return;
}
if (ret == 0)
break;
if (unw_get_reg(&cur, UNW_REG_IP, &ip) < 0) {
LOG_PRINT_L0(" " << std::setw(4) << level);
continue;
}
if (unw_get_proc_name(&cur, sym, sizeof(sym), &off) < 0) {
LOG_PRINT_L0(" " << std::setw(4) << level << std::setbase(16) << std::setw(20) << "0x" << ip);
continue;
}
dsym = abi::__cxa_demangle(sym, NULL, NULL, &status);
LOG_PRINT_L0(" " << std::setw(4) << level << std::setbase(16) << std::setw(20) << "0x" << ip << " " << (!status && dsym ? dsym : sym) << " + " << "0x" << off);
free(dsym);
}
#else
#warning libunwind disabled, no stack traces
#endif
}
} // namespace tools
