AxioDL/logvisor
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Use libbacktrace for Linux/macOS

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This commit is contained in:
Luke Street
2020-12-16 07:31:39 -05:00
parent 81fb4e4c2d
commit 22e14d760a
3 changed files with 48 additions and 51 deletions
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63
lib/logvisor.cpp
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@@ -178,57 +178,26 @@ void KillProcessTree() {
void KillProcessTree() {}
#include <execinfo.h>
[[noreturn]] void logvisorAbort() {
void* array[128];
size_t size = backtrace(array, 128);
#include <backtrace.h>
constexpr size_t exeBufSize = 1024 + 1;
char exeNameBuffer[exeBufSize] = {};
void backtrace_error(void* data, const char* msg, int errnum) {
std::fprintf(stderr, "Error retrieving stack trace: %d %s\n", errnum, msg);
}
#if __linux__
readlink("/proc/self/exe", exeNameBuffer, exeBufSize);
#endif
#if __APPLE__
std::string cmdLineStr = fmt::format(FMT_STRING("atos -p {}"), getpid());
#else
std::string cmdLineStr = fmt::format(FMT_STRING("2>/dev/null addr2line -C -f -e \"{}\""), exeNameBuffer);
#endif
for (size_t i = 0; i < size; i++) {
#if __linux__
Dl_info dlip;
if (dladdr(array[i], &dlip))
cmdLineStr += fmt::format(FMT_STRING(" 0x{:016X}"), (uintptr_t)((uint8_t*)array[i] - (uint8_t*)dlip.dli_fbase));
else
cmdLineStr += fmt::format(FMT_STRING(" 0x{:016X}"), (uintptr_t)array[i]);
#else
cmdLineStr += fmt::format(FMT_STRING(" 0x{:016X}"), (uintptr_t)array[i]);
#endif
int backtrace_callback(void* data, uintptr_t pc, const char* filename, int lineno, const char* function) {
int status = -255;
char* demangledName = abi::__cxa_demangle(function, nullptr, nullptr, &status);
std::fprintf(stderr, "0x%lX %s\n\t%s:%d\n", pc, status == 0 ? demangledName : function, filename, lineno);
if (demangledName != nullptr) {
std::free(demangledName);
}
return 0;
}
FILE* fp = popen(cmdLineStr.c_str(), "r");
if (fp) {
char readBuf[256];
size_t readSz;
while ((readSz = fread(readBuf, 1, 256, fp)))
std::fwrite(readBuf, 1, readSz, stderr);
pclose(fp);
} else {
for (size_t i = 0; i < size; i++) {
std::fputs("- ", stderr);
Dl_info dlip;
if (dladdr(array[i], &dlip)) {
int status;
char* demangledName = abi::__cxa_demangle(dlip.dli_sname, nullptr, nullptr, &status);
std::fprintf(stderr, "%p(%s+%p)\n", dlip.dli_saddr, demangledName ? demangledName : dlip.dli_sname,
(void*)((uint8_t*)array[i] - (uint8_t*)dlip.dli_fbase));
std::free(demangledName);
} else {
std::fprintf(stderr, "%p\n", array[i]);
}
}
[[noreturn]] void logvisorAbort() {
backtrace_state* state = backtrace_create_state(nullptr, 0, backtrace_error, nullptr);
if (state != nullptr) {
backtrace_full(state, 0, backtrace_callback, backtrace_error, nullptr);
}
std::fflush(stderr);