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Try to use atomics inside signal handler for ref count.

This commit is contained in:
Calvin Rose 2023-08-20 08:49:49 -05:00
parent 91712add3d
commit ca4c1e4259
2 changed files with 11 additions and 3 deletions
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12
src/core/ev.c
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@ -603,11 +603,19 @@ void janet_addtimeout(double sec) {
} }
void janet_ev_inc_refcount(void) { void janet_ev_inc_refcount(void) {
janet_vm.extra_listeners++; #ifdef JANET_WINDOWS
InterlockedIncrement(&janet_vm.extra_listeners);
#else
__atomic_add_fetch(&janet_vm.extra_listeners, 1, __ATOMIC_RELAXED);
#endif
} }
void janet_ev_dec_refcount(void) { void janet_ev_dec_refcount(void) {
janet_vm.extra_listeners--; #ifdef JANET_WINDOWS
InterlockedDecrement(&janet_vm.extra_listeners);
#else
__atomic_add_fetch(&janet_vm.extra_listeners, -1, __ATOMIC_RELAXED);
#endif
} }
/* Channels */ /* Channels */

2
src/core/state.h
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@ -157,7 +157,7 @@ struct JanetVM {
JanetListenerState **listeners; JanetListenerState **listeners;
size_t listener_count; size_t listener_count;
size_t listener_cap; size_t listener_cap;
size_t extra_listeners; volatile size_t extra_listeners; /* used in signal handler, must be volatile */
JanetTable threaded_abstracts; /* All abstract types that can be shared between threads (used in this thread) */ JanetTable threaded_abstracts; /* All abstract types that can be shared between threads (used in this thread) */
JanetTable active_tasks; /* All possibly live task fibers - used just for tracking */ JanetTable active_tasks; /* All possibly live task fibers - used just for tracking */
JanetTable signal_handlers; JanetTable signal_handlers;