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[Linux] Prevent GC from running during process teardown #225

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Merged
merged 1 commit into from
Mar 25, 2025
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[Linux] Prevent GC from running during process teardown #225

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7 changes: 7 additions & 0 deletions src/signals-unix.c
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Original file line number Diff line number Diff line change
Expand Up @@ -472,6 +472,7 @@ static int thread0_exit_signo = 0;
static void JL_NORETURN jl_exit_thread0_cb(void)
{
CFI_NORETURN
jl_atomic_fetch_add(&jl_gc_disable_counter, -1);
jl_critical_error(thread0_exit_signo, 0, NULL, jl_current_task);
jl_atexit_hook(128);
jl_raise(thread0_exit_signo);
Expand Down Expand Up @@ -963,6 +964,12 @@ static void *signal_listener(void *arg)
//#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309L && !HAVE_KEVENT
// si_code = info.si_code;
//#endif
// Let's forbid threads from running GC while we're trying to exit,
// also let's make sure we're not in the middle of GC.
jl_atomic_fetch_add(&jl_gc_disable_counter, 1);
while (jl_atomic_load_acquire(&jl_gc_running)) {
jl_cpu_pause();
}
jl_exit_thread0(sig, bt_data, bt_size);
}
else if (critical) {
Expand Down