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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/plugins/ppapi/ppapi_unittest.h"
#include "base/memory/scoped_ptr.h"
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppp_instance.h"
#include "third_party/npapi/bindings/npruntime.h"
#include "webkit/plugins/ppapi/mock_plugin_delegate.h"
#include "webkit/plugins/ppapi/mock_resource.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
#include "webkit/plugins/ppapi/resource_tracker.h"
#include "webkit/plugins/ppapi/var.h"
namespace webkit {
namespace ppapi {
namespace {
// Tracked Resources -----------------------------------------------------------
class TrackedMockResource : public MockResource {
public:
static int tracked_objects_alive;
TrackedMockResource(PluginInstance* instance) : MockResource(instance) {
tracked_objects_alive++;
}
~TrackedMockResource() {
tracked_objects_alive--;
}
};
int TrackedMockResource::tracked_objects_alive = 0;
// Tracked NPObjects -----------------------------------------------------------
int g_npobjects_alive = 0;
void TrackedClassDeallocate(NPObject* npobject) {
g_npobjects_alive--;
}
NPClass g_tracked_npclass = {
NP_CLASS_STRUCT_VERSION,
NULL,
&TrackedClassDeallocate,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
};
// Returns a new tracked NPObject with a refcount of 1.
NPObject* NewTrackedNPObject() {
NPObject* object = new NPObject;
object->_class = &g_tracked_npclass;
object->referenceCount = 1;
g_npobjects_alive++;
return object;
}
} // namespace
// ResourceTrackerTest ---------------------------------------------------------
class ResourceTrackerTest : public PpapiUnittest {
public:
ResourceTrackerTest() {
}
virtual void SetUp() {
// The singleton override must be installed before the generic setup because
// that creates an instance, etc. which uses the tracker.
ResourceTracker::SetSingletonOverride(&tracker_);
PpapiUnittest::SetUp();
}
virtual void TearDown() {
// Must do normal tear down before clearing the override for the same rason
// as the SetUp.
PpapiUnittest::TearDown();
ResourceTracker::ClearSingletonOverride();
}
ResourceTracker& tracker() { return tracker_; }
private:
ResourceTracker tracker_;
};
TEST_F(ResourceTrackerTest, Ref) {
ASSERT_EQ(0, TrackedMockResource::tracked_objects_alive);
EXPECT_EQ(0u,
tracker().GetLiveObjectsForInstance(instance()->pp_instance()));
{
scoped_refptr<TrackedMockResource> new_resource(
new TrackedMockResource(instance()));
ASSERT_EQ(1, TrackedMockResource::tracked_objects_alive);
// Since we haven't gotten a PP_Resource, it's not associated with the
// module.
EXPECT_EQ(0u,
tracker().GetLiveObjectsForInstance(instance()->pp_instance()));
}
ASSERT_EQ(0, TrackedMockResource::tracked_objects_alive);
// Make a new resource and get it as a PP_Resource.
PP_Resource resource_id = 0;
{
scoped_refptr<TrackedMockResource> new_resource(
new TrackedMockResource(instance()));
ASSERT_EQ(1, TrackedMockResource::tracked_objects_alive);
resource_id = new_resource->GetReference();
EXPECT_EQ(1u,
tracker().GetLiveObjectsForInstance(instance()->pp_instance()));
// Resource IDs should be consistent.
PP_Resource resource_id_2 = new_resource->GetReference();
ASSERT_EQ(resource_id, resource_id_2);
}
// This time it should not have been deleted since the PP_Resource carries
// a ref.
ASSERT_EQ(1, TrackedMockResource::tracked_objects_alive);
// Now we have two refs, derefing twice should delete the object.
tracker().UnrefResource(resource_id);
ASSERT_EQ(1, TrackedMockResource::tracked_objects_alive);
tracker().UnrefResource(resource_id);
ASSERT_EQ(0, TrackedMockResource::tracked_objects_alive);
}
TEST_F(ResourceTrackerTest, DeleteResourceWithInstance) {
// Make a second instance (the test harness already creates & manages one).
scoped_refptr<PluginInstance> instance2(
new PluginInstance(delegate(), module(),
static_cast<const PPP_Instance*>(
GetMockInterface(PPP_INSTANCE_INTERFACE))));
PP_Instance pp_instance2 = instance2->pp_instance();
// Make two resources and take refs on behalf of the "plugin" for each.
scoped_refptr<TrackedMockResource> resource1(
new TrackedMockResource(instance2));
resource1->GetReference();
scoped_refptr<TrackedMockResource> resource2(
new TrackedMockResource(instance2));
resource2->GetReference();
// Keep an "internal" ref to only the first (the PP_Resource also holds a
// ref to each resource on behalf of the plugin).
resource2 = NULL;
ASSERT_EQ(2, TrackedMockResource::tracked_objects_alive);
EXPECT_EQ(2u, tracker().GetLiveObjectsForInstance(pp_instance2));
// Free the instance, this should release both plugin refs.
instance2 = NULL;
EXPECT_EQ(0u, tracker().GetLiveObjectsForInstance(pp_instance2));
// The resource we have a scoped_refptr to should still be alive, but it
// should have a NULL instance.
ASSERT_FALSE(resource1->instance());
ASSERT_EQ(1, TrackedMockResource::tracked_objects_alive);
resource1 = NULL;
ASSERT_EQ(0, TrackedMockResource::tracked_objects_alive);
}
TEST_F(ResourceTrackerTest, DeleteObjectVarWithInstance) {
// Make a second instance (the test harness already creates & manages one).
scoped_refptr<PluginInstance> instance2(
new PluginInstance(delegate(), module(),
static_cast<const PPP_Instance*>(
GetMockInterface(PPP_INSTANCE_INTERFACE))));
PP_Instance pp_instance2 = instance2->pp_instance();
// Make an object var.
scoped_ptr<NPObject> npobject(NewTrackedNPObject());
ObjectVar::NPObjectToPPVar(instance2.get(), npobject.get());
EXPECT_EQ(1, g_npobjects_alive);
EXPECT_EQ(1u, tracker().GetLiveObjectsForInstance(pp_instance2));
// Free the instance, this should release the ObjectVar.
instance2 = NULL;
EXPECT_EQ(0u, tracker().GetLiveObjectsForInstance(pp_instance2));
}
// Make sure that using the same NPObject should give the same PP_Var
// each time.
TEST_F(ResourceTrackerTest, ReuseVar) {
scoped_ptr<NPObject> npobject(NewTrackedNPObject());
PP_Var pp_object1 = ObjectVar::NPObjectToPPVar(instance(), npobject.get());
PP_Var pp_object2 = ObjectVar::NPObjectToPPVar(instance(), npobject.get());
// The two results should be the same.
EXPECT_EQ(pp_object1.value.as_id, pp_object2.value.as_id);
// The objects should be able to get us back to the associated NPObject.
// This ObjectVar must be released before we do NPObjectToPPVar again
// below so it gets freed and we get a new identifier.
{
scoped_refptr<ObjectVar> check_object(ObjectVar::FromPPVar(pp_object1));
ASSERT_TRUE(check_object.get());
EXPECT_EQ(instance(), check_object->instance());
EXPECT_EQ(npobject.get(), check_object->np_object());
}
// Remove both of the refs we made above.
tracker().UnrefVar(static_cast<int32_t>(pp_object2.value.as_id));
tracker().UnrefVar(static_cast<int32_t>(pp_object1.value.as_id));
// Releasing the resource should free the internal ref, and so making a new
// one now should generate a new ID.
PP_Var pp_object3 = ObjectVar::NPObjectToPPVar(instance(), npobject.get());
EXPECT_NE(pp_object1.value.as_id, pp_object3.value.as_id);
tracker().UnrefVar(static_cast<int32_t>(pp_object3.value.as_id));
}
} // namespace ppapi
} // namespace webkit
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