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Refactor update_global_event_hook

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It seems more readable to put JIT invalidation code together.
This commit is contained in:
Takashi Kokubun 2022-11-13 15:13:13 -08:00
parent e377875cff
commit dc5e2eaab6
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1 changed files with 11 additions and 12 deletions
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23
vm_trace.c
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@ -91,28 +91,27 @@ update_global_event_hook(rb_event_flag_t prev_events, rb_event_flag_t new_events
bool enable_c_call = (prev_events & RUBY_EVENT_C_CALL) == 0 && (new_events & RUBY_EVENT_C_CALL);
bool enable_c_return = (prev_events & RUBY_EVENT_C_RETURN) == 0 && (new_events & RUBY_EVENT_C_RETURN);
// Modify ISEQs or CCs to enable tracing
if (first_time_iseq_events_p) {
// :class events are triggered only in ISEQ_TYPE_CLASS, but mjit_target_iseq_p ignores such iseqs.
// Thus we don't need to cancel JIT-ed code for :class events.
if (new_iseq_events != RUBY_EVENT_CLASS) {
// Stop calling all JIT-ed code. We can't rewrite existing JIT-ed code to trace_ insns for now.
mjit_cancel_all("TracePoint is enabled");
}
// write all ISeqs only when new events are added for the first time
rb_iseq_trace_set_all(new_iseq_events | enabled_iseq_events);
}
else {
// if c_call or c_return is activated:
if (enable_c_call || enable_c_return) {
rb_clear_attr_ccs();
}
// if c_call or c_return is activated
else if (enable_c_call || enable_c_return) {
rb_clear_attr_ccs();
}
ruby_vm_event_flags = new_events;
ruby_vm_event_enabled_global_flags |= new_events;
rb_objspace_set_event_hook(new_events);
// Invalidate JIT code as needed
if (first_time_iseq_events_p && new_iseq_events != RUBY_EVENT_CLASS) {
// Stop calling all JIT-ed code. We can't rewrite existing JIT-ed code to trace_ insns for now.
// :class events are triggered only in ISEQ_TYPE_CLASS, but mjit_target_iseq_p ignores such iseqs.
// Thus we don't need to cancel JIT-ed code for :class events.
mjit_cancel_all("TracePoint is enabled");
}
if (first_time_iseq_events_p || enable_c_call || enable_c_return) {
// Invalidate all code when ISEQs are modified to use trace_* insns above.
// Also invalidate when enabling c_call or c_return because generated code