thread.c (sleep_*): reduce the effect of spurious interrupts

Spurious interrupts from SIGCHLD cause Mutex#sleep (via
ConditionVariable#wait) to return early and breaks some use
cases.  Since these are outside the programs's control with
MJIT, we will only consider pending interrupts (e.g. those
from Thread#run) and signals which cause a Ruby-level Signal.trap
handler to fire as "spurious" wakeups.

[ruby-core:88537] [Feature #15002]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/vm_core.h b/vm_core.h
index 38a5775220..b936b0352b 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -1736,11 +1736,11 @@ enum {
 
 VALUE rb_exc_set_backtrace(VALUE exc, VALUE bt);
 int rb_signal_buff_size(void);
-void rb_signal_exec(rb_thread_t *th, int sig);
+int rb_signal_exec(rb_thread_t *th, int sig);
 void rb_threadptr_check_signal(rb_thread_t *mth);
 void rb_threadptr_signal_raise(rb_thread_t *th, int sig);
 void rb_threadptr_signal_exit(rb_thread_t *th);
-void rb_threadptr_execute_interrupts(rb_thread_t *, int);
+int rb_threadptr_execute_interrupts(rb_thread_t *, int);
 void rb_threadptr_interrupt(rb_thread_t *th);
 void rb_threadptr_unlock_all_locking_mutexes(rb_thread_t *th);
 void rb_threadptr_pending_interrupt_clear(rb_thread_t *th);