rocksdb/port/stack_trace.cc
Dhruba Borthakur 9cd221094c Add appropriate LICENSE and Copyright message.
Summary:
Add appropriate LICENSE and Copyright message.

Test Plan:
make check

Reviewers:

CC:

Task ID: #

Blame Rev:
2013-10-16 17:48:41 -07:00

103 lines
2.4 KiB
C++

// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#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 rocksdb {
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);
fprintf(stderr, "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)
{
fprintf(stderr, "#%-2d %p ", i - kSkip, frames[i]);
if (symbols) {
fprintf(stderr, "%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)) {
fprintf(stderr, "%s", line);
}
pclose(f);
} else {
fprintf(stderr, "\n");
}
} else {
fprintf(stderr, "\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);
printf("Installed stack trace handler for SIGILL SIGSEGV SIGBUS SIGABRT\n");
}
} // namespace rocksdb
#else // no-op for non-linux system for now
namespace rocksdb {
void InstallStackTraceHandler() {}
}
#endif // OS_LINUX