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rocksdb/port/stack_trace.cc

94 lines
2.0 KiB

#include "util/stack_trace.h"
#ifdef OS_LINUX
#include <execinfo.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
namespace leveldb {
static const char* GetExecutableName()
{
static char name[1024];
char link[1024];
snprintf(link, sizeof(link), "/proc/%d/exe", getpid());
auto read = readlink(link, name, sizeof(name));
if (-1 == read) {
return nullptr;
} else {
name[read] = 0;
return name;
}
}
static void StackTraceHandler(int sig) {
// reset to default handler
signal(sig, SIG_DFL);
printf("Received signal %d (%s)\n", sig, strsignal(sig));
const int kMaxFrames = 100;
void *frames[kMaxFrames];
auto num_frames = backtrace(frames, kMaxFrames);
auto symbols = backtrace_symbols(frames, num_frames);
auto executable = GetExecutableName();
const int kSkip = 2; // skip the top two signal handler related frames
for (int i = kSkip; i < num_frames; ++i)
{
printf("#%-2d %p ", i - kSkip, frames[i]);
if (symbols) {
printf("%s ", symbols[i]);
}
if (executable) {
// out source to addr2line, for the address translation
const int kLineMax = 256;
char cmd[kLineMax];
sprintf(cmd,"addr2line %p -e %s 2>&1", frames[i] , executable);
auto f = popen(cmd, "r");
if (f) {
char line[kLineMax];
while (fgets(line, sizeof(line), f)) {
printf("%s", line);
}
pclose(f);
} else {
printf("\n");
}
} else {
printf("\n");
}
}
// re-signal to default handler (so we still get core dump if needed...)
raise(sig);
}
void InstallStackTraceHandler() {
// just use the plain old signal as it's simple and sufficient
// for this use case
signal(SIGILL, StackTraceHandler);
signal(SIGSEGV, StackTraceHandler);
signal(SIGBUS, StackTraceHandler);
signal(SIGABRT, StackTraceHandler);
}
} // namespace leveldb
#else // no-op for non-linux system for now
namespace leveldb {
void InstallStackTraceHandler() {}
}
#endif // OS_LINUX