Revision cf98df34c1f812ed6c285110dceb5558f1ced92f authored by Maysam Yabandeh on 20 February 2019, 03:55:30 UTC, committed by Facebook Github Bot on 20 February 2019, 03:58:55 UTC
Summary: Currently the transaction stress tests use thread id as the seed. Since the thread ids are likely to be the same across multiple runs, the seed is thus going to be the same. The patch includes time in calculating the seed to help covering a very different part of state space in each run of the stress tests. To be able to reproduce the bug in case the stress tests failed, it also prints out the time that was used to calculate the seed value. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5004 Differential Revision: D14144356 Pulled By: maysamyabandeh fbshipit-source-id: 728ed522f550fc8b4f5f9f373259c05fe9a54556
1 parent 0f4244f
stack_trace.cc
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
#include "port/stack_trace.h"
#if defined(ROCKSDB_LITE) || !(defined(ROCKSDB_BACKTRACE) || defined(OS_MACOSX)) || \
defined(CYGWIN) || defined(OS_FREEBSD) || defined(OS_SOLARIS)
// noop
namespace rocksdb {
namespace port {
void InstallStackTraceHandler() {}
void PrintStack(int /*first_frames_to_skip*/) {}
} // namespace port
} // namespace rocksdb
#else
#include <execinfo.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <cxxabi.h>
namespace rocksdb {
namespace port {
namespace {
#if defined(OS_LINUX) || defined(OS_FREEBSD)
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) - 1);
if (-1 == read) {
return nullptr;
} else {
name[read] = 0;
return name;
}
}
void PrintStackTraceLine(const char* symbol, void* frame) {
static const char* executable = GetExecutableName();
if (symbol) {
fprintf(stderr, "%s ", symbol);
}
if (executable) {
// out source to addr2line, for the address translation
const int kLineMax = 256;
char cmd[kLineMax];
snprintf(cmd, kLineMax, "addr2line %p -e %s -f -C 2>&1", frame, executable);
auto f = popen(cmd, "r");
if (f) {
char line[kLineMax];
while (fgets(line, sizeof(line), f)) {
line[strlen(line) - 1] = 0; // remove newline
fprintf(stderr, "%s\t", line);
}
pclose(f);
}
} else {
fprintf(stderr, " %p", frame);
}
fprintf(stderr, "\n");
}
#elif defined(OS_MACOSX)
void PrintStackTraceLine(const char* symbol, void* frame) {
static int pid = getpid();
// out source to atos, for the address translation
const int kLineMax = 256;
char cmd[kLineMax];
snprintf(cmd, kLineMax, "xcrun atos %p -p %d 2>&1", frame, pid);
auto f = popen(cmd, "r");
if (f) {
char line[kLineMax];
while (fgets(line, sizeof(line), f)) {
line[strlen(line) - 1] = 0; // remove newline
fprintf(stderr, "%s\t", line);
}
pclose(f);
} else if (symbol) {
fprintf(stderr, "%s ", symbol);
}
fprintf(stderr, "\n");
}
#endif
} // namespace
void PrintStack(int first_frames_to_skip) {
const int kMaxFrames = 100;
void* frames[kMaxFrames];
auto num_frames = backtrace(frames, kMaxFrames);
auto symbols = backtrace_symbols(frames, num_frames);
for (int i = first_frames_to_skip; i < num_frames; ++i) {
fprintf(stderr, "#%-2d ", i - first_frames_to_skip);
PrintStackTraceLine((symbols != nullptr) ? symbols[i] : nullptr, frames[i]);
}
free(symbols);
}
static void StackTraceHandler(int sig) {
// reset to default handler
signal(sig, SIG_DFL);
fprintf(stderr, "Received signal %d (%s)\n", sig, strsignal(sig));
// skip the top three signal handler related frames
PrintStack(3);
// 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 port
} // namespace rocksdb
#endif
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