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Request inline cache values from mjit_compile

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rather than preparing beforehand.

By having this change, implementing inlining by calling
`mjit_copy_cache_from_main_thread` for inlined methods was made
possible.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67288 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
k0kubun 2019-03-17 18:29:30 +00:00
parent d86a1aa045
commit 4161674b2f
3 changed files with 25 additions and 24 deletions
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2
mjit.h
View file

@ -64,7 +64,7 @@ extern void mjit_add_iseq_to_process(const rb_iseq_t *iseq);
extern VALUE mjit_wait_call(rb_execution_context_t *ec, struct rb_iseq_constant_body *body);
RUBY_SYMBOL_EXPORT_END
extern bool mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *funcname, struct rb_call_cache *cc_entries, union iseq_inline_storage_entry *is_entries);
extern bool mjit_compile(FILE *f, const rb_iseq_t *iseq, const char *funcname);
extern void mjit_init(struct mjit_options *opts);
extern void mjit_postponed_job_register_start_hook(void);
extern void mjit_postponed_job_register_finish_hook(void);

10
mjit_compile.c
View file

@ -196,10 +196,14 @@ compile_cancel_handler(FILE *f, const struct rb_iseq_constant_body *body, struct
fprintf(f, " return Qundef;\n");
}
extern bool mjit_copy_cache_from_main_thread(const rb_iseq_t *iseq, struct rb_call_cache **cc_entries, union iseq_inline_storage_entry **is_entries);
// Compile ISeq to C code in `f`. It returns true if it succeeds to compile.
bool
mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *funcname, struct rb_call_cache *cc_entries, union iseq_inline_storage_entry *is_entries)
mjit_compile(FILE *f, const rb_iseq_t *iseq, const char *funcname)
{
const struct rb_iseq_constant_body *body = iseq->body;
struct compile_status status;
status.success = true;
status.local_stack_p = !body->catch_except_p;
@ -207,8 +211,8 @@ mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *func
if (status.stack_size_for_pos == NULL)
return false;
memset(status.stack_size_for_pos, NOT_COMPILED_STACK_SIZE, sizeof(int) * body->iseq_size);
status.cc_entries = cc_entries;
status.is_entries = is_entries;
if (mjit_copy_cache_from_main_thread(iseq, &status.cc_entries, &status.is_entries) == false)
return false;
/* For performance, we verify stack size only on compilation time (mjit_compile.inc.erb) without --jit-debug */
if (!mjit_opts.debug) {

37
mjit_worker.c
View file

@ -986,7 +986,7 @@ compile_prelude(FILE *f)
/* Compile ISeq in UNIT and return function pointer of JIT-ed code.
It may return NOT_COMPILED_JIT_ISEQ_FUNC if something went wrong. */
static mjit_func_t
convert_unit_to_func(struct rb_mjit_unit *unit, struct rb_call_cache *cc_entries, union iseq_inline_storage_entry *is_entries)
convert_unit_to_func(struct rb_mjit_unit *unit)
{
char c_file_buff[MAXPATHLEN], *c_file = c_file_buff, *so_file, funcname[35]; /* TODO: reconsider `35` */
int fd;
@ -1067,7 +1067,7 @@ convert_unit_to_func(struct rb_mjit_unit *unit, struct rb_call_cache *cc_entries
verbose(2, "start compilation: %s@%s:%d -> %s", label, path, lineno, c_file);
fprintf(f, "/* %s@%s:%d */\n\n", label, path, lineno);
}
bool success = mjit_compile(f, unit->iseq->body, funcname, cc_entries, is_entries);
bool success = mjit_compile(f, unit->iseq, funcname);
/* release blocking mjit_gc_start_hook */
CRITICAL_SECTION_START(3, "after mjit_compile to wakeup client for GC");
@ -1146,14 +1146,14 @@ int rb_workqueue_register(unsigned flags, rb_postponed_job_func_t , void *);
//
// We're lazily copying cache values from main thread because these cache values
// could be different between ones on enqueue timing and ones on dequeue timing.
static bool
copy_cache_from_main_thread(const rb_iseq_t *iseq, struct rb_call_cache **cc_entries, union iseq_inline_storage_entry **is_entries)
bool
mjit_copy_cache_from_main_thread(const rb_iseq_t *iseq, struct rb_call_cache **cc_entries, union iseq_inline_storage_entry **is_entries)
{
mjit_copy_job_t *job = &mjit_copy_job; // just a short hand
CRITICAL_SECTION_START(3, "in copy_cache_from_main_thread");
CRITICAL_SECTION_START(3, "in mjit_copy_cache_from_main_thread");
job->finish_p = true; // disable dispatching this job in mjit_copy_job_handler while it's being modified
CRITICAL_SECTION_FINISH(3, "in copy_cache_from_main_thread");
CRITICAL_SECTION_FINISH(3, "in mjit_copy_cache_from_main_thread");
const struct rb_iseq_constant_body *body = iseq->body;
job->cc_entries = NULL;
@ -1170,10 +1170,10 @@ copy_cache_from_main_thread(const rb_iseq_t *iseq, struct rb_call_cache **cc_ent
return true;
}
CRITICAL_SECTION_START(3, "in copy_cache_from_main_thread");
CRITICAL_SECTION_START(3, "in mjit_copy_cache_from_main_thread");
job->iseq = iseq; // Prevernt GC of this ISeq from here
job->finish_p = false; // allow dispatching this job in mjit_copy_job_handler
CRITICAL_SECTION_FINISH(3, "in copy_cache_from_main_thread");
CRITICAL_SECTION_FINISH(3, "in mjit_copy_cache_from_main_thread");
if (UNLIKELY(mjit_opts.wait)) {
mjit_copy_job_handler((void *)job);
@ -1194,12 +1194,12 @@ copy_cache_from_main_thread(const rb_iseq_t *iseq, struct rb_call_cache **cc_ent
*is_entries = job->is_entries;
bool result = job->finish_p;
CRITICAL_SECTION_START(3, "in copy_cache_from_main_thread");
job->iseq = NULL; // Skip `mjit_mark`-ing this ISeq to allow GC
CRITICAL_SECTION_START(3, "in mjit_copy_cache_from_main_thread");
job->iseq = NULL; // Allow GC of this ISeq from here
// Disable dispatching this job in mjit_copy_job_handler while memory allocated by alloca
// could be expired after finishing this function.
job->finish_p = true;
CRITICAL_SECTION_FINISH(3, "in copy_cache_from_main_thread");
CRITICAL_SECTION_FINISH(3, "in mjit_copy_cache_from_main_thread");
return result;
}
@ -1238,16 +1238,13 @@ mjit_worker(void)
CRITICAL_SECTION_FINISH(3, "in worker dequeue");
if (unit) {
struct rb_call_cache *cc_entries;
union iseq_inline_storage_entry *is_entries;
// Copy mutable values from main threads
if (copy_cache_from_main_thread(unit->iseq, &cc_entries, &is_entries) == false) {
continue; // retry postponed_job failure, or stop worker
}
// JIT compile
mjit_func_t func = convert_unit_to_func(unit, cc_entries, is_entries);
mjit_func_t func = convert_unit_to_func(unit);
// `mjit_copy_cache_from_main_thread` in `mjit_compile` may wait for a long time
// and worker may be stopped during the compilation.
if (stop_worker_p)
break;
CRITICAL_SECTION_START(3, "in jit func replace");
while (in_gc) { /* Make sure we're not GC-ing when touching ISeq */