зеркало из https://github.com/github/ruby.git
79 строки
1.5 KiB
C
79 строки
1.5 KiB
C
#include "ruby/ruby.h"
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#include "ruby/thread.h"
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static void*
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native_sleep_callback(void *data)
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{
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struct timeval *timeval = data;
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select(0, NULL, NULL, NULL, timeval);
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return NULL;
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}
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static VALUE
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thread_runnable_sleep(VALUE thread, VALUE timeout)
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{
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struct timeval timeval;
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if (NIL_P(timeout)) {
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rb_raise(rb_eArgError, "timeout must be non nil");
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}
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timeval = rb_time_interval(timeout);
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rb_thread_call_without_gvl(native_sleep_callback, &timeval, RUBY_UBF_IO, NULL);
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return Qnil;
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}
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struct loop_ctl {
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int notify_fd;
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volatile int stop;
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};
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static void *
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do_loop(void *p)
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{
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struct loop_ctl *ctl = p;
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/* tell the waiting process they can interrupt us, now */
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ssize_t err = write(ctl->notify_fd, "", 1);
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if (err == -1) rb_bug("write error");
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while (!ctl->stop) {
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struct timeval tv = { 0, 10000 };
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select(0, NULL, NULL, NULL, &tv);
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}
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return 0;
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}
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static void
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stop_set(void *p)
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{
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struct loop_ctl *ctl = p;
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ctl->stop = 1;
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}
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static VALUE
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thread_ubf_async_safe(VALUE thread, VALUE notify_fd)
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{
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struct loop_ctl ctl;
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ctl.notify_fd = NUM2INT(notify_fd);
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ctl.stop = 0;
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rb_nogvl(do_loop, &ctl, stop_set, &ctl, RB_NOGVL_UBF_ASYNC_SAFE);
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return Qnil;
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}
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void
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Init_call_without_gvl(void)
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{
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VALUE mBug = rb_define_module("Bug");
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VALUE klass = rb_define_module_under(mBug, "Thread");
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rb_define_singleton_method(klass, "runnable_sleep", thread_runnable_sleep, 1);
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rb_define_singleton_method(klass, "ubf_async_safe", thread_ubf_async_safe, 1);
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}
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