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detect macos crashlog recursion

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Chloe 2024-12-27 20:23:12 -07:00
parent 100be49f83
commit a69c4c2f83
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1 changed files with 9 additions and 0 deletions

9
loader/src/platform/mac/crashlog.mm
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@ -23,6 +23,7 @@ static siginfo_t* s_siginfo = nullptr;
static ucontext_t* s_context = nullptr;
static size_t s_backtraceSize = 0;
static std::array<void*, FRAME_SIZE> s_backtrace;
static int s_crashIter = 0;
static std::string_view getSignalCodeString() {
switch(s_signal) {
@ -169,6 +170,12 @@ static std::string getInfo(void* address, Mod* faultyMod) {
}
extern "C" void signalHandler(int signal, siginfo_t* signalInfo, void* vcontext) {
if (s_crashIter > 3) {
// the crashlog crashed too much so maybe we shouldn't try
std::abort();
}
s_crashIter++;
auto context = reinterpret_cast<ucontext_t*>(vcontext);
s_backtraceSize = backtrace(s_backtrace.data(), FRAME_SIZE);
@ -192,6 +199,8 @@ extern "C" void signalHandler(int signal, siginfo_t* signalInfo, void* vcontext)
s_cv.notify_all();
std::unique_lock<std::mutex> lock(s_mutex);
s_cv.wait(lock, [] { return s_signal == 0; });
s_crashIter--;
std::_Exit(EXIT_FAILURE);
}