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vm_trace.c: workqueue as thread-safe version of postponed_job

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postponed_job is safe to use in signal handlers, but is not
thread-safe for MJIT.  Implement a workqueue for MJIT
thread-safety.

[Bug #15316]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2018-11-30 03:56:29 +00:00
parent d7e4e50bdb
commit eb38fb670b
5 changed files with 67 additions and 20 deletions
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3
thread.c
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@ -419,6 +419,7 @@ rb_vm_gvl_destroy(rb_vm_t *vm)
if (0) {
/* may be held by running threads */
rb_native_mutex_destroy(&vm->waitpid_lock);
rb_native_mutex_destroy(&vm->workqueue_lock);
}
}
@ -4422,6 +4423,7 @@ rb_thread_atfork_internal(rb_thread_t *th, void (*atfork)(rb_thread_t *, const r
/* may be held by MJIT threads in parent */
rb_native_mutex_initialize(&vm->waitpid_lock);
rb_native_mutex_initialize(&vm->workqueue_lock);
/* may be held by any thread in parent */
rb_native_mutex_initialize(&th->interrupt_lock);
@ -5183,6 +5185,7 @@ Init_Thread(void)
gvl_init(th->vm);
gvl_acquire(th->vm, th);
rb_native_mutex_initialize(&th->vm->waitpid_lock);
rb_native_mutex_initialize(&th->vm->workqueue_lock);
rb_native_mutex_initialize(&th->interrupt_lock);
th->pending_interrupt_queue = rb_ary_tmp_new(0);