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authornormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-11-23 21:20:56 (GMT)
committernormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-11-23 21:20:56 (GMT)
commit15476c695d708796f2271d99deb3cd5288d016d2 (patch)
tree732c1bbea1d729379b572b529fc464727ad02c88 /vm_core.h
parent6965964df65c1c3679b92b92101225e4a709ba73 (diff)
fiddle: release GVL for ffi_call
Some external functions I wish to call may take a long time and unnecessarily block other threads. This may lead to performance regressions for fast functions as releasing/acquiring the GVL is not cheap, but can improve performance for long-running functions in multi-threaded applications. This also means we must reacquire the GVL when calling Ruby-defined callbacks for Fiddle::Closure, meaning we must detect whether the current thread has the GVL by exporting ruby_thread_has_gvl_p in internal.h * ext/fiddle/function.c (struct nogvl_ffi_call_args): new struct for GVL release (nogvl_ffi_call): new function (function_call): adjust for GVL release [ruby-core:71642] [Feature #11607] * ext/fiddle/closure.c (struct callback_args): new struct for GVL acquire (with_gvl_callback): adjusted original callback function (callback): wrapper for conditional GVL acquire * ext/fiddle/depend: add dependencies * ext/fiddle/extconf.rb: include top_srcdir for internal.h * internal.h (ruby_thread_has_gvl_p): expose for fiddle * vm_core.h (ruby_thread_has_gvl_p): moved to internal.h * test/fiddle/test_function.rb (test_nogvl_poll): new test git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52723 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'vm_core.h')
-rw-r--r--vm_core.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/vm_core.h b/vm_core.h
index aacdd3b..da14552 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -1036,7 +1036,6 @@ rb_vm_living_threads_remove(rb_vm_t *vm, rb_thread_t *th)
vm->living_thread_num--;
}
-int ruby_thread_has_gvl_p(void);
typedef int rb_backtrace_iter_func(void *, VALUE, int, VALUE);
rb_control_frame_t *rb_vm_get_ruby_level_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp);
rb_control_frame_t *rb_vm_get_binding_creatable_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp);