YJIT: Allow shareable consts in multi-ractor mode (#11917)

* Update yjit-bindgen deps

* YJIT: Allow shareable consts in multi-ractor mode

* Update yjit/src/codegen.rs

Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>

---------

Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
This commit is contained in:
John Hawthorn 2024-10-18 12:01:45 -07:00 committed by GitHub
parent e17243d325
commit 7be9a333ca
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
Notes: git 2024-10-18 19:02:04 +00:00
Merged-By: maximecb <maximecb@ruby-lang.org>
8 changed files with 186 additions and 216 deletions

View File

@ -230,6 +230,8 @@ union ic_serial_entry {
VALUE data[2];
};
#define IMEMO_CONST_CACHE_SHAREABLE IMEMO_FL_USER0
// imemo_constcache
struct iseq_inline_constant_cache_entry {
VALUE flags;

View File

@ -6273,8 +6273,6 @@ rb_vm_opt_newarray_pack(rb_execution_context_t *ec, rb_num_t num, const VALUE *p
#undef id_cmp
#define IMEMO_CONST_CACHE_SHAREABLE IMEMO_FL_USER0
static void
vm_track_constant_cache(ID id, void *ic)
{

6
yjit.c
View File

@ -1062,6 +1062,12 @@ rb_IMEMO_TYPE_P(VALUE imemo, enum imemo_type imemo_type)
return IMEMO_TYPE_P(imemo, imemo_type);
}
bool
rb_yjit_constcache_shareable(const struct iseq_inline_constant_cache_entry *ice)
{
return (ice->flags & IMEMO_CONST_CACHE_SHAREABLE) != 0;
}
void
rb_assert_cme_handle(VALUE handle)
{

366
yjit/bindgen/Cargo.lock generated
View File

@ -4,52 +4,87 @@ version = 3
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name = "yjit-bindgen"

View File

@ -6,5 +6,5 @@ edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
bindgen = "0.63.0"
env_logger = "0.10.0"
bindgen = "0.70.1"
env_logger = "0.11.5"

View File

@ -61,9 +61,6 @@ fn main() {
.blocklist_type("size_t")
.blocklist_type("fpos_t")
// Prune these types since they are system dependant and we don't use them
.blocklist_type("__.*")
// Import YARV bytecode instruction constants
.allowlist_type("ruby_vminsn_type")
@ -327,6 +324,7 @@ fn main() {
.allowlist_function("rb_yjit_vm_unlock")
.allowlist_function("rb_assert_(iseq|cme)_handle")
.allowlist_function("rb_IMEMO_TYPE_P")
.allowlist_function("rb_yjit_constcache_shareable")
.allowlist_function("rb_iseq_reset_jit_func")
.allowlist_function("rb_yjit_dump_iseq_loc")
.allowlist_function("rb_yjit_for_each_iseq")

View File

@ -9915,11 +9915,16 @@ fn gen_opt_getconstant_path(
return Some(EndBlock);
}
if !unsafe { (*ice).ic_cref }.is_null() {
let cref_sensitive = !unsafe { (*ice).ic_cref }.is_null();
let is_shareable = unsafe { rb_yjit_constcache_shareable(ice) };
let needs_checks = cref_sensitive || (!is_shareable && !assume_single_ractor_mode(jit, asm));
if needs_checks {
// Cache is keyed on a certain lexical scope. Use the interpreter's cache.
let inline_cache = asm.load(Opnd::const_ptr(ic as *const u8));
// Call function to verify the cache. It doesn't allocate or call methods.
// This includes a check for Ractor safety
let ret_val = asm.ccall(
rb_vm_ic_hit_p as *const u8,
vec![inline_cache, Opnd::mem(64, CFP, RUBY_OFFSET_CFP_EP)]
@ -9948,12 +9953,6 @@ fn gen_opt_getconstant_path(
let stack_top = asm.stack_push(Type::Unknown);
asm.store(stack_top, ic_entry_val);
} else {
// Optimize for single ractor mode.
if !assume_single_ractor_mode(jit, asm) {
gen_counter_incr(jit, asm, Counter::opt_getconstant_path_multi_ractor);
return None;
}
// Invalidate output code on any constant writes associated with
// constants referenced within the current block.
jit.assume_stable_constant_names(asm, idlist);

View File

@ -1,4 +1,4 @@
/* automatically generated by rust-bindgen 0.63.0 */
/* automatically generated by rust-bindgen 0.70.1 */
#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
@ -135,7 +135,7 @@ impl<T> ::std::default::Default for __BindgenUnionField<T> {
impl<T> ::std::clone::Clone for __BindgenUnionField<T> {
#[inline]
fn clone(&self) -> Self {
Self::new()
*self
}
}
impl<T> ::std::marker::Copy for __BindgenUnionField<T> {}
@ -1257,6 +1257,7 @@ extern "C" {
pub fn rb_yjit_multi_ractor_p() -> bool;
pub fn rb_assert_iseq_handle(handle: VALUE);
pub fn rb_IMEMO_TYPE_P(imemo: VALUE, imemo_type: imemo_type) -> ::std::os::raw::c_int;
pub fn rb_yjit_constcache_shareable(ice: *const iseq_inline_constant_cache_entry) -> bool;
pub fn rb_assert_cme_handle(handle: VALUE);
pub fn rb_yjit_for_each_iseq(callback: rb_iseq_callback, data: *mut ::std::os::raw::c_void);
pub fn rb_yjit_obj_written(