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Code Issues 1 Releases Wiki Activity

Try to use atomics inside signal handler for ref count.

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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) {
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) {
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 */

2
src/core/state.h
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@@ -157,7 +157,7 @@ struct JanetVM {
JanetListenerState **listeners;
size_t listener_count;
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 active_tasks; /* All possibly live task fibers - used just for tracking */
JanetTable signal_handlers;