a143ef9b38
Summary: Change namespace from leveldb to rocksdb. This allows a single application to link in open-source leveldb code as well as rocksdb code into the same process. Test Plan: compile rocksdb Reviewers: emayanke Reviewed By: emayanke CC: leveldb Differential Revision: https://reviews.facebook.net/D13287
98 lines
2.2 KiB
C++
98 lines
2.2 KiB
C++
#include "util/stack_trace.h"
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#ifdef OS_LINUX
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#include <execinfo.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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namespace rocksdb {
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static const char* GetExecutableName()
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{
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static char name[1024];
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char link[1024];
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snprintf(link, sizeof(link), "/proc/%d/exe", getpid());
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auto read = readlink(link, name, sizeof(name));
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if (-1 == read) {
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return nullptr;
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} else {
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name[read] = 0;
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return name;
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}
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}
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static void StackTraceHandler(int sig) {
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// reset to default handler
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signal(sig, SIG_DFL);
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fprintf(stderr, "Received signal %d (%s)\n", sig, strsignal(sig));
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const int kMaxFrames = 100;
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void *frames[kMaxFrames];
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auto num_frames = backtrace(frames, kMaxFrames);
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auto symbols = backtrace_symbols(frames, num_frames);
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auto executable = GetExecutableName();
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const int kSkip = 2; // skip the top two signal handler related frames
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for (int i = kSkip; i < num_frames; ++i)
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{
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fprintf(stderr, "#%-2d %p ", i - kSkip, frames[i]);
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if (symbols) {
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fprintf(stderr, "%s ", symbols[i]);
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}
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if (executable) {
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// out source to addr2line, for the address translation
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const int kLineMax = 256;
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char cmd[kLineMax];
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sprintf(cmd,"addr2line %p -e %s 2>&1", frames[i] , executable);
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auto f = popen(cmd, "r");
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if (f) {
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char line[kLineMax];
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while (fgets(line, sizeof(line), f)) {
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fprintf(stderr, "%s", line);
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}
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pclose(f);
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} else {
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fprintf(stderr, "\n");
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}
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} else {
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fprintf(stderr, "\n");
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}
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}
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// re-signal to default handler (so we still get core dump if needed...)
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raise(sig);
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}
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void InstallStackTraceHandler() {
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// just use the plain old signal as it's simple and sufficient
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// for this use case
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signal(SIGILL, StackTraceHandler);
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signal(SIGSEGV, StackTraceHandler);
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signal(SIGBUS, StackTraceHandler);
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signal(SIGABRT, StackTraceHandler);
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printf("Installed stack trace handler for SIGILL SIGSEGV SIGBUS SIGABRT\n");
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}
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} // namespace rocksdb
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#else // no-op for non-linux system for now
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namespace rocksdb {
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void InstallStackTraceHandler() {}
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}
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#endif // OS_LINUX
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