Contents

#ifndef NOGVL_COMPAT_H
#define NOGVL_COMPAT_H
/*
 * Compatibility layer for various GVL-releasing wrappers.
 *
 * This layer will be updated to favor compatibility with the latest
 * Matz Ruby C API, currently Ruby 2.0.0 (as of 2013-04-05).
 *
 * rb_thread_call_without_gvl was detectable via have_func in 1.9.3,
 * but not usable.  So we must check for ruby/thread.h and use
 * rb_thread_blocking_region if ruby/thread.h is not available
 *
 * HAVE_RUBY_THREAD_H is defined by ruby.h in 2.0.0, NOT using
 * extconf.rb since that may find ruby/thread.h in a different
 * installation
 */
#if defined(HAVE_RB_THREAD_CALL_WITHOUT_GVL) && \
	defined(HAVE_RUBY_THREAD_H) && HAVE_RUBY_THREAD_H /* Ruby 2.0.0 */
#  include <ruby/thread.h>
#  define NOGVL(fn,data1,ubf,data2) \
      rb_thread_call_without_gvl((fn),(data1),(ubf),(data2))
#elif defined(HAVE_RB_THREAD_BLOCKING_REGION) /* Ruby 1.9.x */
#  define COMPAT_FN (VALUE (*)(void *))
#  define NOGVL(fn,data1,ubf,data2) \
      (void *)rb_thread_blocking_region(COMPAT_FN(fn),(data1),(ubf),(data2))
#else /* Ruby 1.8 */
/*
 * Ruby 1.8 does not have a GVL, we'll just enable signal interrupts
 * here in case we make interruptible syscalls
 */
#  define RUBY_UBF_IO ((rb_unblock_function_t *)-1)
#  include "rubysig.h"
typedef void rb_unblock_function_t(void *);
typedef void *rb_blocking_function_t(void *);

static void *
fake_nogvl(fn, data1, ubf, data2)
	rb_blocking_function_t fn;
	void *data1;
	rb_unblock_function_t ubf;
	void *data2;
{
	void *rv;

	TRAP_BEG;
	rv = fn(data1);
	TRAP_END;

	return rv;
}
#  define NOGVL(fn,data1,ubf,data2) fake_nogvl((fn),(data1),(ubf),(data2))
#endif

#endif /* NOGVL_COMPAT_H */

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
mahoro-0.5	ext/mahoro/nogvl_compat.h
mahoro-0.4	ext/mahoro/nogvl_compat.h