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Wait for GC before unload_units

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Takashi Kokubun 2020-12-07 19:57:15 -08:00
parent ea18c8bb96
commit a8f16df615
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1 changed files with 12 additions and 1 deletions
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13
mjit_worker.c
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@ -1361,16 +1361,27 @@ mjit_worker(void)
while (!stop_worker_p) {
struct rb_mjit_unit *unit;
// wait until unit is available
// Wait until a unit becomes available
CRITICAL_SECTION_START(3, "in worker dequeue");
while ((list_empty(&unit_queue.head) || active_units.length >= mjit_opts.max_cache_size) && !stop_worker_p) {
rb_native_cond_wait(&mjit_worker_wakeup, &mjit_engine_mutex);
verbose(3, "Getting wakeup from client");
// Unload some units as needed
if (unload_requests >= throttle_threshold) {
while (in_gc) {
verbose(3, "Waiting wakeup from GC");
rb_native_cond_wait(&mjit_gc_wakeup, &mjit_engine_mutex);
}
in_jit = true; // Lock GC
RB_DEBUG_COUNTER_INC(mjit_unload_units);
unload_units();
unload_requests = 0;
in_jit = false; // Unlock GC
verbose(3, "Sending wakeup signal to client in a mjit-worker for GC");
rb_native_cond_signal(&mjit_client_wakeup);
}
if (active_units.length == mjit_opts.max_cache_size && mjit_opts.wait) { // Sometimes all methods may be in use
mjit_opts.max_cache_size++; // avoid infinite loop on `rb_mjit_wait_call`. Note that --jit-wait is just for testing.