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YJIT: Add Counter::invalidate_everything

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When YJIT is forced to discard all the code, that's bad for
performance, so there should be an easy way to know about it.
This commit is contained in:
Alan Wu 2025-03-07 17:42:03 -05:00
parent 3c92fe13f8
commit 98790faae3
Notes: git 2025-03-08 01:23:52 +00:00 
Merged: https://github.com/ruby/ruby/pull/12882
2 changed files with 4 additions and 0 deletions
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2
yjit/src/invariants.rs
View File

@ -626,6 +626,8 @@ pub extern "C" fn rb_yjit_tracing_invalidate_all() {
return;
}
incr_counter!(invalidate_everything);
// Stop other ractors since we are going to patch machine code.
with_vm_lock(src_loc!(), || {
// Make it so all live block versions are no longer valid branch targets

2
yjit/src/stats.rs
View File

@ -293,6 +293,7 @@ pub const DEFAULT_COUNTERS: &'static [Counter] = &[
Counter::invalidate_constant_ic_fill,
Counter::invalidate_no_singleton_class,
Counter::invalidate_ep_escape,
Counter::invalidate_everything,
];
/// Macro to increase a counter by name and count
@ -589,6 +590,7 @@ make_counters! {
invalidate_constant_ic_fill,
invalidate_no_singleton_class,
invalidate_ep_escape,
invalidate_everything,
// Currently, it's out of the ordinary (might be impossible) for YJIT to leave gaps in
// executable memory, so this should be 0.