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mjit.c: add timeout for --jit-wait

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Sometimes test hangs in `mjit_get_iseq_func` like this:
http://ci.rvm.jp/results/trunk-test@ruby-sky3/659391

It seems that a process waiting in `mjit_get_iseq_func` does no longer
have MJIT worker thread. We don't wait for JIT finish forever. So I
added timeout for the case. I'm not sure why there was no MJIT worker
thread in ruby-sky3 test process though.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62785 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
k0kubun 2018-03-17 02:00:30 +00:00
parent 6cd5db8904
commit c91c62b674
2 changed files with 16 additions and 2 deletions
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16
mjit.c
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@ -1125,15 +1125,29 @@ mjit_add_iseq_to_process(const rb_iseq_t *iseq)
CRITICAL_SECTION_FINISH(3, "in add_iseq_to_process");
}
/* For this timeout seconds, --jit-wait will wait for JIT compilation finish. */
#define MJIT_WAIT_TIMEOUT_SECONDS 60
/* Wait for JIT compilation finish for --jit-wait. This should only return a function pointer
or NOT_COMPILABLE_JIT_ISEQ_FUNC. */
mjit_func_t
mjit_get_iseq_func(const struct rb_iseq_constant_body *body)
mjit_get_iseq_func(struct rb_iseq_constant_body *body)
{
struct timeval tv;
int tries = 0;
tv.tv_sec = 0;
tv.tv_usec = 1000;
while (body->jit_func == (mjit_func_t)NOT_READY_JIT_ISEQ_FUNC) {
tries++;
if (tries / 1000 > MJIT_WAIT_TIMEOUT_SECONDS) {
CRITICAL_SECTION_START(3, "in mjit_get_iseq_func to set jit_func");
body->jit_func = (mjit_func_t)NOT_COMPILABLE_JIT_ISEQ_FUNC; /* JIT worker seems dead. Give up. */
CRITICAL_SECTION_FINISH(3, "in mjit_get_iseq_func to set jit_func");
if (mjit_opts.warnings || mjit_opts.verbose)
fprintf(stderr, "MJIT warning: timed out to wait for JIT finish\n");
break;
}
CRITICAL_SECTION_START(3, "in mjit_get_iseq_func for a client wakeup");
rb_native_cond_broadcast(&mjit_worker_wakeup);
CRITICAL_SECTION_FINISH(3, "in mjit_get_iseq_func for a client wakeup");

2
mjit.h
View file

@ -56,7 +56,7 @@ extern struct mjit_options mjit_opts;
extern int mjit_init_p;
extern void mjit_add_iseq_to_process(const rb_iseq_t *iseq);
extern mjit_func_t mjit_get_iseq_func(const struct rb_iseq_constant_body *body);
extern mjit_func_t mjit_get_iseq_func(struct rb_iseq_constant_body *body);
RUBY_SYMBOL_EXPORT_END
extern int mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *funcname);