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Add crash handlers to restore terminal state

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Install signal handlers for SIGSEGV, SIGABRT, SIGTRAP, SIGBUS, and SIGILL
to restore terminal state before crashing. This prevents leaving the terminal
in a broken state if btop crashes unexpectedly.
This commit is contained in:
kuzmeech
2025-10-12 13:42:26 -04:00
parent af9e3ca0a1
commit 9fb085afc3
1 changed files with 16 additions and 0 deletions
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16
src/btop.cpp
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@@ -256,6 +256,16 @@ static void _exit_handler() {
clean_quit(-1);
}
static void _crash_handler(const int sig) {
// Restore terminal before crashing
if (Term::initialized) {
Term::restore();
}
// Re-raise the signal to get default behavior (core dump)
std::signal(sig, SIG_DFL);
std::raise(sig);
}
static void _signal_handler(const int sig) {
switch (sig) {
case SIGINT:
@@ -1014,6 +1024,12 @@ int main(const int argc, const char** argv) {
std::signal(SIGWINCH, _signal_handler);
std::signal(SIGUSR1, _signal_handler);
std::signal(SIGUSR2, _signal_handler);
// Add crash handlers to restore terminal on crash
std::signal(SIGSEGV, _crash_handler);
std::signal(SIGABRT, _crash_handler);
std::signal(SIGTRAP, _crash_handler);
std::signal(SIGBUS, _crash_handler);
std::signal(SIGILL, _crash_handler);
sigset_t mask;
sigemptyset(&mask);