generic-library/g3log
1
0
Fork 0
mirror of https://github.com/KjellKod/g3log.git synced 2024-12-13 02:32:56 +01:00
Code Issues Projects Releases Wiki Activity

vanilla example. dynamic signal turning on/off

Browse Source
This commit is contained in:
Kjell Hedstrom 2015-09-01 00:35:47 -06:00
parent ad11a34fbb
commit 3bcf360815
1 changed files with 44 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
src/crashhandler_unix.cpp
View File

@ -26,6 +26,7 @@
#include <iostream>
#include <thread>
#include <atomic>
#include <map>
// Linux/Clang, OSX/Clang, OSX/gcc
#if (defined(__clang__) || defined(__APPLE__))
@ -36,6 +37,18 @@
namespace {
const std::map<int, std::string> kSignals = {
{SIGABRT, "SIGABRT"},
{SIGFPE,"SIGFPE"},
{SIGILL,"SIGILL"},
{SIGSEGV,"SIGSEGV"},
{SIGTERM,"SIGTERM"},
};
std::map<int, std::string> gSignals = kSignals;
bool shouldDoExit() {
static std::atomic<uint64_t> firstExit{0};
auto const count = firstExit.fetch_add(1, std::memory_order_relaxed);
@ -53,6 +66,18 @@ namespace {
#endif
}
void overrideSetupSignals(const std::map<int, std::string> overrideSignals) {
static std::mutex signalLock;
std::lock_guard<std::mutex> guard(signalLock);
gSignals = overrideSignals;
for(const auto& sig: kSignals) {
restoreSignalHandler(sig.first);
}
g3::installCrashHandler();
}
// Dump of stack,. then exit through g3log background worker
// ALL thanks to this thread at StackOverflow. Pretty much borrowed from:
// Ref: http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes
@ -233,21 +258,30 @@ namespace g3 {
action.sa_flags = SA_SIGINFO;
// do it verbose style - install all signal actions
if (sigaction(SIGABRT, &action, NULL) < 0)
perror("sigaction - SIGABRT");
if (sigaction(SIGFPE, &action, NULL) < 0)
perror("sigaction - SIGFPE");
if (sigaction(SIGILL, &action, NULL) < 0)
perror("sigaction - SIGILL");
if (sigaction(SIGSEGV, &action, NULL) < 0)
perror("sigaction - SIGSEGV");
if (sigaction(SIGTERM, &action, NULL) < 0)
perror("sigaction - SIGTERM");
for (const auto& sig_pair : gSignals) {
if (sigaction(sig_pair.first, &action, nullptr) < 0) {
const std::string error = "sigaction - " + sig_pair.second;
perror(error.c_str());
}
}
// if (sigaction(SIGABRT, &action, NULL) < 0)
// perror("sigaction - SIGABRT");
// if (sigaction(SIGFPE, &action, NULL) < 0)
// perror("sigaction - SIGFPE");
// if (sigaction(SIGILL, &action, NULL) < 0)
// perror("sigaction - SIGILL");
// if (sigaction(SIGSEGV, &action, NULL) < 0)
// perror("sigaction - SIGSEGV");
// if (sigaction(SIGTERM, &action, NULL) < 0)
// perror("sigaction - SIGTERM");
#endif
}
void installCrashHandler() {
installSignalHandler();
} // namespace g3::internal