* [PATCH] fiddle: release GVL for ffi_call
@ 2015-10-19 21:44 Eric Wong
0 siblings, 0 replies; 2+ messages in thread
From: Eric Wong @ 2015-10-19 21:44 UTC (permalink / raw)
To: spew
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/closure.c | 76 ++++++++++++++++++++++++++++++--------------
ext/fiddle/depend | 4 ++-
ext/fiddle/extconf.rb | 1 +
ext/fiddle/function.c | 36 +++++++++++++++------
internal.h | 3 ++
test/fiddle/test_function.rb | 19 +++++++++++
vm_core.h | 1 -
7 files changed, 105 insertions(+), 35 deletions(-)
diff --git a/ext/fiddle/closure.c b/ext/fiddle/closure.c
index ca1b10a..bf12bab 100644
--- a/ext/fiddle/closure.c
+++ b/ext/fiddle/closure.c
@@ -1,4 +1,6 @@
#include <fiddle.h>
+#include <ruby/thread.h>
+#include "internal.h" /* rb_thread_has_gvl_p */
VALUE cFiddleClosure;
@@ -55,10 +57,19 @@ const rb_data_type_t closure_data_type = {
{0, dealloc, closure_memsize,},
};
+struct callback_args {
+ ffi_cif *cif;
+ void *resp;
+ void **args;
+ void *ctx;
+};
+
static void
-callback(ffi_cif *cif, void *resp, void **args, void *ctx)
+with_gvl_callback(void *ptr)
{
- VALUE self = (VALUE)ctx;
+ struct callback_args *x = ptr;
+
+ VALUE self = (VALUE)x->ctx;
VALUE rbargs = rb_iv_get(self, "@args");
VALUE ctype = rb_iv_get(self, "@ctype");
int argc = RARRAY_LENINT(rbargs);
@@ -76,46 +87,46 @@ callback(ffi_cif *cif, void *resp, void **args, void *ctx)
argc = 0;
break;
case TYPE_INT:
- rb_ary_push(params, INT2NUM(*(int *)args[i]));
+ rb_ary_push(params, INT2NUM(*(int *)x->args[i]));
break;
case -TYPE_INT:
- rb_ary_push(params, UINT2NUM(*(unsigned int *)args[i]));
+ rb_ary_push(params, UINT2NUM(*(unsigned int *)x->args[i]));
break;
case TYPE_VOIDP:
rb_ary_push(params,
rb_funcall(cPointer, rb_intern("[]"), 1,
- PTR2NUM(*(void **)args[i])));
+ PTR2NUM(*(void **)x->args[i])));
break;
case TYPE_LONG:
- rb_ary_push(params, LONG2NUM(*(long *)args[i]));
+ rb_ary_push(params, LONG2NUM(*(long *)x->args[i]));
break;
case -TYPE_LONG:
- rb_ary_push(params, ULONG2NUM(*(unsigned long *)args[i]));
+ rb_ary_push(params, ULONG2NUM(*(unsigned long *)x->args[i]));
break;
case TYPE_CHAR:
- rb_ary_push(params, INT2NUM(*(signed char *)args[i]));
+ rb_ary_push(params, INT2NUM(*(signed char *)x->args[i]));
break;
case -TYPE_CHAR:
- rb_ary_push(params, UINT2NUM(*(unsigned char *)args[i]));
+ rb_ary_push(params, UINT2NUM(*(unsigned char *)x->args[i]));
break;
case TYPE_SHORT:
- rb_ary_push(params, INT2NUM(*(signed short *)args[i]));
+ rb_ary_push(params, INT2NUM(*(signed short *)x->args[i]));
break;
case -TYPE_SHORT:
- rb_ary_push(params, UINT2NUM(*(unsigned short *)args[i]));
+ rb_ary_push(params, UINT2NUM(*(unsigned short *)x->args[i]));
break;
case TYPE_DOUBLE:
- rb_ary_push(params, rb_float_new(*(double *)args[i]));
+ rb_ary_push(params, rb_float_new(*(double *)x->args[i]));
break;
case TYPE_FLOAT:
- rb_ary_push(params, rb_float_new(*(float *)args[i]));
+ rb_ary_push(params, rb_float_new(*(float *)x->args[i]));
break;
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
- rb_ary_push(params, LL2NUM(*(LONG_LONG *)args[i]));
+ rb_ary_push(params, LL2NUM(*(LONG_LONG *)x->args[i]));
break;
case -TYPE_LONG_LONG:
- rb_ary_push(params, ULL2NUM(*(unsigned LONG_LONG *)args[i]));
+ rb_ary_push(params, ULL2NUM(*(unsigned LONG_LONG *)x->args[i]));
break;
#endif
default:
@@ -131,36 +142,36 @@ callback(ffi_cif *cif, void *resp, void **args, void *ctx)
case TYPE_VOID:
break;
case TYPE_LONG:
- *(long *)resp = NUM2LONG(ret);
+ *(long *)x->resp = NUM2LONG(ret);
break;
case -TYPE_LONG:
- *(unsigned long *)resp = NUM2ULONG(ret);
+ *(unsigned long *)x->resp = NUM2ULONG(ret);
break;
case TYPE_CHAR:
case TYPE_SHORT:
case TYPE_INT:
- *(ffi_sarg *)resp = NUM2INT(ret);
+ *(ffi_sarg *)x->resp = NUM2INT(ret);
break;
case -TYPE_CHAR:
case -TYPE_SHORT:
case -TYPE_INT:
- *(ffi_arg *)resp = NUM2UINT(ret);
+ *(ffi_arg *)x->resp = NUM2UINT(ret);
break;
case TYPE_VOIDP:
- *(void **)resp = NUM2PTR(ret);
+ *(void **)x->resp = NUM2PTR(ret);
break;
case TYPE_DOUBLE:
- *(double *)resp = NUM2DBL(ret);
+ *(double *)x->resp = NUM2DBL(ret);
break;
case TYPE_FLOAT:
- *(float *)resp = (float)NUM2DBL(ret);
+ *(float *)x->resp = (float)NUM2DBL(ret);
break;
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
- *(LONG_LONG *)resp = NUM2LL(ret);
+ *(LONG_LONG *)x->resp = NUM2LL(ret);
break;
case -TYPE_LONG_LONG:
- *(unsigned LONG_LONG *)resp = NUM2ULL(ret);
+ *(unsigned LONG_LONG *)x->resp = NUM2ULL(ret);
break;
#endif
default:
@@ -168,6 +179,23 @@ callback(ffi_cif *cif, void *resp, void **args, void *ctx)
}
}
+static void
+callback(ffi_cif *cif, void *resp, void **args, void *ctx)
+{
+ struct callback_args x;
+
+ x.cif = cif;
+ x.resp = resp;
+ x.args = args;
+ x.ctx = ctx;
+
+ if (ruby_thread_has_gvl_p()) {
+ (void)with_gvl_callback(&x);
+ } else {
+ (void)rb_thread_call_with_gvl(with_gvl_callback, &x);
+ }
+}
+
static VALUE
allocate(VALUE klass)
{
diff --git a/ext/fiddle/depend b/ext/fiddle/depend
index 0052787..bf264a1 100644
--- a/ext/fiddle/depend
+++ b/ext/fiddle/depend
@@ -9,7 +9,9 @@ CONFIGURE_LIBFFI = \
$(OBJS): $(HDRS) $(ruby_headers) \
$(hdrdir)/ruby/io.h \
$(hdrdir)/ruby/encoding.h \
- $(hdrdir)/ruby/oniguruma.h
+ $(hdrdir)/ruby/oniguruma.h \
+ $(hdrdir)/ruby/thread.h \
+ $(top_srcdir)/internal.h
$(STATIC_LIB) $(RUBYARCHDIR)/$(DLLIB) $(DLLIB): $(LIBFFI_A)
diff --git a/ext/fiddle/extconf.rb b/ext/fiddle/extconf.rb
index 5cb6386..c264a33 100644
--- a/ext/fiddle/extconf.rb
+++ b/ext/fiddle/extconf.rb
@@ -143,6 +143,7 @@ if libffi
$LOCAL_LIBS.prepend("./#{libffi.a} ").strip! # to exts.mk
$INCFLAGS.gsub!(/-I#{libffi.dir}/, '-I$(LIBFFI_DIR)')
end
+$INCFLAGS << " -I$(top_srcdir)"
create_makefile 'fiddle' do |conf|
if !libffi
next conf << "LIBFFI_CLEAN = none\n"
diff --git a/ext/fiddle/function.c b/ext/fiddle/function.c
index e0da8b6..8b08e0f 100644
--- a/ext/fiddle/function.c
+++ b/ext/fiddle/function.c
@@ -1,4 +1,5 @@
#include <fiddle.h>
+#include <ruby/thread.h>
#ifdef PRIsVALUE
# define RB_OBJ_CLASSNAME(obj) rb_obj_class(obj)
@@ -128,13 +129,28 @@ initialize(int argc, VALUE argv[], VALUE self)
return self;
}
+struct nogvl_ffi_call_args {
+ ffi_cif *cif;
+ void (*fn)(void);
+ void **values;
+ fiddle_generic retval;
+};
+
+static void *
+nogvl_ffi_call(void *ptr)
+{
+ struct nogvl_ffi_call_args *args = ptr;
+
+ ffi_call(args->cif, args->fn, &args->retval, args->values);
+
+ return NULL;
+}
+
static VALUE
function_call(int argc, VALUE argv[], VALUE self)
{
- ffi_cif * cif;
- fiddle_generic retval;
+ struct nogvl_ffi_call_args args = { 0 };
fiddle_generic *generic_args;
- void **values;
VALUE cfunc, types, cPointer;
int i;
VALUE alloc_buffer = 0;
@@ -149,7 +165,7 @@ function_call(int argc, VALUE argv[], VALUE self)
argc, RARRAY_LENINT(types));
}
- TypedData_Get_Struct(self, ffi_cif, &function_data_type, cif);
+ TypedData_Get_Struct(self, ffi_cif, &function_data_type, args.cif);
if (rb_safe_level() >= 1) {
for (i = 0; i < argc; i++) {
@@ -162,7 +178,8 @@ function_call(int argc, VALUE argv[], VALUE self)
generic_args = ALLOCV(alloc_buffer,
(size_t)(argc + 1) * sizeof(void *) + (size_t)argc * sizeof(fiddle_generic));
- values = (void **)((char *)generic_args + (size_t)argc * sizeof(fiddle_generic));
+ args.values = (void **)((char *)generic_args +
+ (size_t)argc * sizeof(fiddle_generic));
for (i = 0; i < argc; i++) {
VALUE type = RARRAY_PTR(types)[i];
@@ -178,11 +195,12 @@ function_call(int argc, VALUE argv[], VALUE self)
}
VALUE2GENERIC(NUM2INT(type), src, &generic_args[i]);
- values[i] = (void *)&generic_args[i];
+ args.values[i] = (void *)&generic_args[i];
}
- values[argc] = NULL;
+ args.values[argc] = NULL;
+ args.fn = NUM2PTR(rb_Integer(cfunc));
- ffi_call(cif, NUM2PTR(rb_Integer(cfunc)), &retval, values);
+ (void)rb_thread_call_without_gvl(nogvl_ffi_call, &args, 0, 0);
rb_funcall(mFiddle, rb_intern("last_error="), 1, INT2NUM(errno));
#if defined(_WIN32)
@@ -191,7 +209,7 @@ function_call(int argc, VALUE argv[], VALUE self)
ALLOCV_END(alloc_buffer);
- return GENERIC2VALUE(rb_iv_get(self, "@return_type"), retval);
+ return GENERIC2VALUE(rb_iv_get(self, "@return_type"), args.retval);
}
void
diff --git a/internal.h b/internal.h
index 2322186..43e3597 100644
--- a/internal.h
+++ b/internal.h
@@ -1288,6 +1288,9 @@ VALUE rb_gcd_gmp(VALUE x, VALUE y);
VALUE rb_setup_fake_str(struct RString *fake_str, const char *name, long len, rb_encoding *enc);
#endif
+/* thread.c (export) */
+int ruby_thread_has_gvl_p(void); /* for ext/fiddle/closure.c */
+
/* util.c (export) */
extern const signed char ruby_digit36_to_number_table[];
extern const char ruby_hexdigits[];
diff --git a/test/fiddle/test_function.rb b/test/fiddle/test_function.rb
index de7c958..7da73de 100644
--- a/test/fiddle/test_function.rb
+++ b/test/fiddle/test_function.rb
@@ -73,6 +73,25 @@ module Fiddle
assert_equal("123", str.to_s)
end
+ def test_nogvl_poll
+ begin
+ poll = @libc['poll']
+ rescue Fiddle::DLError
+ skip 'poll(2) not available'
+ end
+ f = Function.new(poll, [TYPE_VOIDP, TYPE_INT, TYPE_INT], TYPE_INT)
+
+ msec = 200
+ t0 = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
+ th = Thread.new { f.call(nil, 0, msec) }
+ n1 = f.call(nil, 0, msec)
+ n2 = th.value
+ t1 = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
+ assert_in_delta(msec, t1 - t0, 100, 'slept correct amount of time')
+ assert_equal(0, n1, 'poll(2) called correctly main-thread')
+ assert_equal(0, n2, 'poll(2) called correctly in sub-thread')
+ end
+
def test_no_memory_leak
prep = 'r = Fiddle::Function.new(Fiddle.dlopen(nil)["rb_obj_tainted"], [Fiddle::TYPE_UINTPTR_T], Fiddle::TYPE_UINTPTR_T); a = "a"'
code = 'begin r.call(a); rescue TypeError; end'
diff --git a/vm_core.h b/vm_core.h
index 2bdb029..1130d60 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -1013,7 +1013,6 @@ 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);
--
EW
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] fiddle: release GVL for ffi_call
@ 2015-10-21 20:50 Eric Wong
0 siblings, 0 replies; 2+ messages in thread
From: Eric Wong @ 2015-10-21 20:50 UTC (permalink / raw)
To: spew
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/closure.c | 79 ++++++++++++++++++++++++++++++--------------
ext/fiddle/depend | 4 ++-
ext/fiddle/extconf.rb | 1 +
ext/fiddle/function.c | 36 +++++++++++++++-----
internal.h | 3 ++
test/fiddle/test_function.rb | 19 +++++++++++
vm_core.h | 1 -
7 files changed, 107 insertions(+), 36 deletions(-)
diff --git a/ext/fiddle/closure.c b/ext/fiddle/closure.c
index ca1b10a..30bf940 100644
--- a/ext/fiddle/closure.c
+++ b/ext/fiddle/closure.c
@@ -1,4 +1,6 @@
#include <fiddle.h>
+#include <ruby/thread.h>
+#include "internal.h" /* rb_thread_has_gvl_p */
VALUE cFiddleClosure;
@@ -55,10 +57,19 @@ const rb_data_type_t closure_data_type = {
{0, dealloc, closure_memsize,},
};
-static void
-callback(ffi_cif *cif, void *resp, void **args, void *ctx)
+struct callback_args {
+ ffi_cif *cif;
+ void *resp;
+ void **args;
+ void *ctx;
+};
+
+static void *
+with_gvl_callback(void *ptr)
{
- VALUE self = (VALUE)ctx;
+ struct callback_args *x = ptr;
+
+ VALUE self = (VALUE)x->ctx;
VALUE rbargs = rb_iv_get(self, "@args");
VALUE ctype = rb_iv_get(self, "@ctype");
int argc = RARRAY_LENINT(rbargs);
@@ -76,46 +87,46 @@ callback(ffi_cif *cif, void *resp, void **args, void *ctx)
argc = 0;
break;
case TYPE_INT:
- rb_ary_push(params, INT2NUM(*(int *)args[i]));
+ rb_ary_push(params, INT2NUM(*(int *)x->args[i]));
break;
case -TYPE_INT:
- rb_ary_push(params, UINT2NUM(*(unsigned int *)args[i]));
+ rb_ary_push(params, UINT2NUM(*(unsigned int *)x->args[i]));
break;
case TYPE_VOIDP:
rb_ary_push(params,
rb_funcall(cPointer, rb_intern("[]"), 1,
- PTR2NUM(*(void **)args[i])));
+ PTR2NUM(*(void **)x->args[i])));
break;
case TYPE_LONG:
- rb_ary_push(params, LONG2NUM(*(long *)args[i]));
+ rb_ary_push(params, LONG2NUM(*(long *)x->args[i]));
break;
case -TYPE_LONG:
- rb_ary_push(params, ULONG2NUM(*(unsigned long *)args[i]));
+ rb_ary_push(params, ULONG2NUM(*(unsigned long *)x->args[i]));
break;
case TYPE_CHAR:
- rb_ary_push(params, INT2NUM(*(signed char *)args[i]));
+ rb_ary_push(params, INT2NUM(*(signed char *)x->args[i]));
break;
case -TYPE_CHAR:
- rb_ary_push(params, UINT2NUM(*(unsigned char *)args[i]));
+ rb_ary_push(params, UINT2NUM(*(unsigned char *)x->args[i]));
break;
case TYPE_SHORT:
- rb_ary_push(params, INT2NUM(*(signed short *)args[i]));
+ rb_ary_push(params, INT2NUM(*(signed short *)x->args[i]));
break;
case -TYPE_SHORT:
- rb_ary_push(params, UINT2NUM(*(unsigned short *)args[i]));
+ rb_ary_push(params, UINT2NUM(*(unsigned short *)x->args[i]));
break;
case TYPE_DOUBLE:
- rb_ary_push(params, rb_float_new(*(double *)args[i]));
+ rb_ary_push(params, rb_float_new(*(double *)x->args[i]));
break;
case TYPE_FLOAT:
- rb_ary_push(params, rb_float_new(*(float *)args[i]));
+ rb_ary_push(params, rb_float_new(*(float *)x->args[i]));
break;
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
- rb_ary_push(params, LL2NUM(*(LONG_LONG *)args[i]));
+ rb_ary_push(params, LL2NUM(*(LONG_LONG *)x->args[i]));
break;
case -TYPE_LONG_LONG:
- rb_ary_push(params, ULL2NUM(*(unsigned LONG_LONG *)args[i]));
+ rb_ary_push(params, ULL2NUM(*(unsigned LONG_LONG *)x->args[i]));
break;
#endif
default:
@@ -131,41 +142,59 @@ callback(ffi_cif *cif, void *resp, void **args, void *ctx)
case TYPE_VOID:
break;
case TYPE_LONG:
- *(long *)resp = NUM2LONG(ret);
+ *(long *)x->resp = NUM2LONG(ret);
break;
case -TYPE_LONG:
- *(unsigned long *)resp = NUM2ULONG(ret);
+ *(unsigned long *)x->resp = NUM2ULONG(ret);
break;
case TYPE_CHAR:
case TYPE_SHORT:
case TYPE_INT:
- *(ffi_sarg *)resp = NUM2INT(ret);
+ *(ffi_sarg *)x->resp = NUM2INT(ret);
break;
case -TYPE_CHAR:
case -TYPE_SHORT:
case -TYPE_INT:
- *(ffi_arg *)resp = NUM2UINT(ret);
+ *(ffi_arg *)x->resp = NUM2UINT(ret);
break;
case TYPE_VOIDP:
- *(void **)resp = NUM2PTR(ret);
+ *(void **)x->resp = NUM2PTR(ret);
break;
case TYPE_DOUBLE:
- *(double *)resp = NUM2DBL(ret);
+ *(double *)x->resp = NUM2DBL(ret);
break;
case TYPE_FLOAT:
- *(float *)resp = (float)NUM2DBL(ret);
+ *(float *)x->resp = (float)NUM2DBL(ret);
break;
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
- *(LONG_LONG *)resp = NUM2LL(ret);
+ *(LONG_LONG *)x->resp = NUM2LL(ret);
break;
case -TYPE_LONG_LONG:
- *(unsigned LONG_LONG *)resp = NUM2ULL(ret);
+ *(unsigned LONG_LONG *)x->resp = NUM2ULL(ret);
break;
#endif
default:
rb_raise(rb_eRuntimeError, "closure retval: %d", type);
}
+ return 0;
+}
+
+static void
+callback(ffi_cif *cif, void *resp, void **args, void *ctx)
+{
+ struct callback_args x;
+
+ x.cif = cif;
+ x.resp = resp;
+ x.args = args;
+ x.ctx = ctx;
+
+ if (ruby_thread_has_gvl_p()) {
+ (void)with_gvl_callback(&x);
+ } else {
+ (void)rb_thread_call_with_gvl(with_gvl_callback, &x);
+ }
}
static VALUE
diff --git a/ext/fiddle/depend b/ext/fiddle/depend
index 0052787..bf264a1 100644
--- a/ext/fiddle/depend
+++ b/ext/fiddle/depend
@@ -9,7 +9,9 @@ CONFIGURE_LIBFFI = \
$(OBJS): $(HDRS) $(ruby_headers) \
$(hdrdir)/ruby/io.h \
$(hdrdir)/ruby/encoding.h \
- $(hdrdir)/ruby/oniguruma.h
+ $(hdrdir)/ruby/oniguruma.h \
+ $(hdrdir)/ruby/thread.h \
+ $(top_srcdir)/internal.h
$(STATIC_LIB) $(RUBYARCHDIR)/$(DLLIB) $(DLLIB): $(LIBFFI_A)
diff --git a/ext/fiddle/extconf.rb b/ext/fiddle/extconf.rb
index 5cb6386..c264a33 100644
--- a/ext/fiddle/extconf.rb
+++ b/ext/fiddle/extconf.rb
@@ -143,6 +143,7 @@ if libffi
$LOCAL_LIBS.prepend("./#{libffi.a} ").strip! # to exts.mk
$INCFLAGS.gsub!(/-I#{libffi.dir}/, '-I$(LIBFFI_DIR)')
end
+$INCFLAGS << " -I$(top_srcdir)"
create_makefile 'fiddle' do |conf|
if !libffi
next conf << "LIBFFI_CLEAN = none\n"
diff --git a/ext/fiddle/function.c b/ext/fiddle/function.c
index e0da8b6..8b08e0f 100644
--- a/ext/fiddle/function.c
+++ b/ext/fiddle/function.c
@@ -1,4 +1,5 @@
#include <fiddle.h>
+#include <ruby/thread.h>
#ifdef PRIsVALUE
# define RB_OBJ_CLASSNAME(obj) rb_obj_class(obj)
@@ -128,13 +129,28 @@ initialize(int argc, VALUE argv[], VALUE self)
return self;
}
+struct nogvl_ffi_call_args {
+ ffi_cif *cif;
+ void (*fn)(void);
+ void **values;
+ fiddle_generic retval;
+};
+
+static void *
+nogvl_ffi_call(void *ptr)
+{
+ struct nogvl_ffi_call_args *args = ptr;
+
+ ffi_call(args->cif, args->fn, &args->retval, args->values);
+
+ return NULL;
+}
+
static VALUE
function_call(int argc, VALUE argv[], VALUE self)
{
- ffi_cif * cif;
- fiddle_generic retval;
+ struct nogvl_ffi_call_args args = { 0 };
fiddle_generic *generic_args;
- void **values;
VALUE cfunc, types, cPointer;
int i;
VALUE alloc_buffer = 0;
@@ -149,7 +165,7 @@ function_call(int argc, VALUE argv[], VALUE self)
argc, RARRAY_LENINT(types));
}
- TypedData_Get_Struct(self, ffi_cif, &function_data_type, cif);
+ TypedData_Get_Struct(self, ffi_cif, &function_data_type, args.cif);
if (rb_safe_level() >= 1) {
for (i = 0; i < argc; i++) {
@@ -162,7 +178,8 @@ function_call(int argc, VALUE argv[], VALUE self)
generic_args = ALLOCV(alloc_buffer,
(size_t)(argc + 1) * sizeof(void *) + (size_t)argc * sizeof(fiddle_generic));
- values = (void **)((char *)generic_args + (size_t)argc * sizeof(fiddle_generic));
+ args.values = (void **)((char *)generic_args +
+ (size_t)argc * sizeof(fiddle_generic));
for (i = 0; i < argc; i++) {
VALUE type = RARRAY_PTR(types)[i];
@@ -178,11 +195,12 @@ function_call(int argc, VALUE argv[], VALUE self)
}
VALUE2GENERIC(NUM2INT(type), src, &generic_args[i]);
- values[i] = (void *)&generic_args[i];
+ args.values[i] = (void *)&generic_args[i];
}
- values[argc] = NULL;
+ args.values[argc] = NULL;
+ args.fn = NUM2PTR(rb_Integer(cfunc));
- ffi_call(cif, NUM2PTR(rb_Integer(cfunc)), &retval, values);
+ (void)rb_thread_call_without_gvl(nogvl_ffi_call, &args, 0, 0);
rb_funcall(mFiddle, rb_intern("last_error="), 1, INT2NUM(errno));
#if defined(_WIN32)
@@ -191,7 +209,7 @@ function_call(int argc, VALUE argv[], VALUE self)
ALLOCV_END(alloc_buffer);
- return GENERIC2VALUE(rb_iv_get(self, "@return_type"), retval);
+ return GENERIC2VALUE(rb_iv_get(self, "@return_type"), args.retval);
}
void
diff --git a/internal.h b/internal.h
index 6941586..e4a6520 100644
--- a/internal.h
+++ b/internal.h
@@ -1291,6 +1291,9 @@ VALUE rb_gcd_gmp(VALUE x, VALUE y);
VALUE rb_setup_fake_str(struct RString *fake_str, const char *name, long len, rb_encoding *enc);
#endif
+/* thread.c (export) */
+int ruby_thread_has_gvl_p(void); /* for ext/fiddle/closure.c */
+
/* util.c (export) */
extern const signed char ruby_digit36_to_number_table[];
extern const char ruby_hexdigits[];
diff --git a/test/fiddle/test_function.rb b/test/fiddle/test_function.rb
index de7c958..7da73de 100644
--- a/test/fiddle/test_function.rb
+++ b/test/fiddle/test_function.rb
@@ -73,6 +73,25 @@ module Fiddle
assert_equal("123", str.to_s)
end
+ def test_nogvl_poll
+ begin
+ poll = @libc['poll']
+ rescue Fiddle::DLError
+ skip 'poll(2) not available'
+ end
+ f = Function.new(poll, [TYPE_VOIDP, TYPE_INT, TYPE_INT], TYPE_INT)
+
+ msec = 200
+ t0 = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
+ th = Thread.new { f.call(nil, 0, msec) }
+ n1 = f.call(nil, 0, msec)
+ n2 = th.value
+ t1 = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
+ assert_in_delta(msec, t1 - t0, 100, 'slept correct amount of time')
+ assert_equal(0, n1, 'poll(2) called correctly main-thread')
+ assert_equal(0, n2, 'poll(2) called correctly in sub-thread')
+ end
+
def test_no_memory_leak
prep = 'r = Fiddle::Function.new(Fiddle.dlopen(nil)["rb_obj_tainted"], [Fiddle::TYPE_UINTPTR_T], Fiddle::TYPE_UINTPTR_T); a = "a"'
code = 'begin r.call(a); rescue TypeError; end'
diff --git a/vm_core.h b/vm_core.h
index 2bdb029..1130d60 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -1013,7 +1013,6 @@ 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);
--
EW
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2015-10-19 21:44 [PATCH] fiddle: release GVL for ffi_call Eric Wong
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