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logvisor
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More informative backtrace on linux / OS X

This commit is contained in:
Jack Andersen 2016-09-17 11:30:17 -10:00
parent 9285d183d7
commit 469bd97ce6
1 changed files with 45 additions and 3 deletions
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48
lib/logvisor.cpp
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@ -10,6 +10,9 @@
#else
#include <sys/ioctl.h>
#include <unistd.h>
#include <dlfcn.h>
#include <cxxabi.h>
#include <string.h>
#endif
#include <fcntl.h>
@ -123,13 +126,52 @@ void logvisorAbort()
{
void* array[128];
size_t size = backtrace(array, 128);
char** strings = backtrace_symbols(array, size);
constexpr size_t exeBufSize = 1024 + 1;
char exeNameBuffer[exeBufSize] = {};
#if __linux__
readlink("/proc/self/exe", exeNameBuffer, exeBufSize);
#endif
for (size_t i = 0; i < size; i++)
fprintf(stderr, "%s\n", strings[i]);
{
fprintf(stderr, "- ");
char cmdLine[512];
#if __APPLE__
snprintf(cmdLine, 512, "atos -p %p %p", getpid(), array[i]);
#else
snprintf(cmdLine, 512, "addr2line -C -f -e \"%s\" %p", exeNameBuffer, array[i]);
#endif
FILE* fp = popen(cmdLine, "r");
if (fp)
{
char readBuf[256];
size_t readSz;
while ((readSz = fread(readBuf, 1, 256, fp)))
fwrite(readBuf, 1, readSz, stderr);
fclose(fp);
}
else
{
Dl_info dlip;
if (dladdr(array[i], &dlip))
{
int status;
char* demangledName = abi::__cxa_demangle(dlip.dli_sname, nullptr, nullptr, &status);
fprintf(stderr, "%p(%s+%p)\n", dlip.dli_saddr, demangledName ? demangledName : dlip.dli_sname,
(void*)((uint8_t*)array[i] - (uint8_t*)dlip.dli_fbase));
free(demangledName);
}
else
{
fprintf(stderr, "%p\n", array[i]);
}
}
}
fflush(stderr);
free(strings);
abort();
}