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d7189600ae
The former was a faulty "fix" for gmtime_r not existing on Windows. The latter is needed only for dynamic builds, and is not included with msys2, which ends up fine because Windows is only built static at this time.
122 lines
4.2 KiB
C++
122 lines
4.2 KiB
C++
// Copyright (c) 2016, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "common/stack_trace.h"
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#include "misc_log_ex.h"
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#ifdef HAVE_LIBUNWIND
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#define UNW_LOCAL_ONLY
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#include <libunwind.h>
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#endif
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#include <cxxabi.h>
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#ifndef STATICLIB
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#include <dlfcn.h>
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#endif
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// from http://stackoverflow.com/questions/11665829/how-can-i-print-stack-trace-for-caught-exceptions-in-c-code-injection-in-c
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#ifdef STATICLIB
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#define CXA_THROW __wrap___cxa_throw
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extern "C" void __real___cxa_throw(void *ex, void *info, void (*dest)(void*));
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#else
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#define CXA_THROW __cxa_throw
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#endif
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extern "C" void CXA_THROW(void *ex, void *info, void (*dest)(void*))
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{
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int status;
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char *dsym = abi::__cxa_demangle(((const std::type_info*)info)->name(), NULL, NULL, &status);
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tools::log_stack_trace((std::string("Exception: ")+((!status && dsym) ? dsym : (const char*)info)).c_str());
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free(dsym);
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#ifdef STATICLIB
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__real___cxa_throw(ex, info, dest);
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#else
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static void (*const rethrow)(void*, void*, void(*)(void*)) __attribute__((noreturn)) = (void(*)(void*, void*, void(*)(void*)))dlsym(RTLD_NEXT, "__cxa_throw");
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rethrow(ex, info, dest);
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#endif
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}
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namespace
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{
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std::string stack_trace_log;
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}
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namespace tools
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{
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void set_stack_trace_log(const std::string &log)
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{
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stack_trace_log = log;
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}
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void log_stack_trace(const char *msg)
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{
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#ifdef HAVE_LIBUNWIND
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unw_context_t ctx;
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unw_cursor_t cur;
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unw_word_t ip, off;
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unsigned level;
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char sym[512], *dsym;
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int status;
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const char *log = stack_trace_log.empty() ? NULL : stack_trace_log.c_str();
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if (msg)
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LOG_PRINT2(log, msg, LOG_LEVEL_0);
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LOG_PRINT2(log, "Unwinded call stack:", LOG_LEVEL_0);
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if (unw_getcontext(&ctx) < 0) {
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LOG_PRINT2(log, "Failed to create unwind context", LOG_LEVEL_0);
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return;
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}
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if (unw_init_local(&cur, &ctx) < 0) {
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LOG_PRINT2(log, "Failed to find the first unwind frame", LOG_LEVEL_0);
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return;
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}
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for (level = 1; level < 999; ++level) { // 999 for safety
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int ret = unw_step(&cur);
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if (ret < 0) {
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LOG_PRINT2(log, "Failed to find the next frame", LOG_LEVEL_0);
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return;
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}
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if (ret == 0)
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break;
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if (unw_get_reg(&cur, UNW_REG_IP, &ip) < 0) {
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LOG_PRINT2(log, " " << std::setw(4) << level, LOG_LEVEL_0);
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continue;
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}
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if (unw_get_proc_name(&cur, sym, sizeof(sym), &off) < 0) {
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LOG_PRINT2(log, " " << std::setw(4) << level << std::setbase(16) << std::setw(20) << "0x" << ip, LOG_LEVEL_0);
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continue;
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}
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dsym = abi::__cxa_demangle(sym, NULL, NULL, &status);
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LOG_PRINT2(log, " " << std::setw(4) << level << std::setbase(16) << std::setw(20) << "0x" << ip << " " << (!status && dsym ? dsym : sym) << " + " << "0x" << off, LOG_LEVEL_0);
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free(dsym);
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}
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#endif
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}
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} // namespace tools
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