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| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-01-04 12:53:06 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-01-04 12:53:06 +0000 |
| commit | 9e66910b3bd85de32e95cf019ed285a36aecfd9e (patch) | |
| tree | 1a31f01ea772012d0afe456ae405c8783263e620 /thread_pthread.c | |
| parent | 79aef1272e877b67b15b00a9cded806845556a0f (diff) | |
| download | ruby-9e66910b3bd85de32e95cf019ed285a36aecfd9e.tar.gz | |
thread.c (call_without_gvl): spawn thread for UBF iff single-threaded
We need another native thread to call some unblocking functions
which aren't RUBY_UBF_IO or RUBY_UBF_PROCESS. Instead of a
permanent thread in <= 2.5, we can now rely on the thread cache
feature to perform interrupts.
[ruby-core:90865] [Bug #15499]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66708 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'thread_pthread.c')
| -rw-r--r-- | thread_pthread.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/thread_pthread.c b/thread_pthread.c index e074a854f5..d8d3184c62 100644 --- a/thread_pthread.c +++ b/thread_pthread.c @@ -2206,4 +2206,23 @@ timer_pthread_fn(void *p) return 0; } #endif /* UBF_TIMER_PTHREAD */ + +static VALUE +ubf_caller(const void *ignore) +{ + rb_thread_sleep_forever(); + + return Qfalse; +} + +/* + * Called if and only if one thread is running, and + * the unblock function is NOT async-signal-safe + * This assumes USE_THREAD_CACHE is true for performance reasons + */ +static VALUE +rb_thread_start_unblock_thread(void) +{ + return rb_thread_create(ubf_caller, 0); +} #endif /* THREAD_SYSTEM_DEPENDENT_IMPLEMENTATION */ |