testable_callback.cc revision f2477e01787aa58f445919b809d89e252beef54f 
1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ppapi/c/pp_errors.h"
6#include "ppapi/c/private/ppb_testing_private.h"
7#include "ppapi/native_client/tests/ppapi_test_lib/get_browser_interface.h"
8#include "ppapi/native_client/tests/ppapi_test_lib/testable_callback.h"
9
10TestableCallback::TestableCallback(PP_Instance instance, bool force_async)
11    : have_result_(false),
12      result_(PP_OK_COMPLETIONPENDING),
13      force_async_(force_async),
14      post_quit_task_(false),
15      run_count_(0),
16      instance_(instance) {
17}
18
19int32_t TestableCallback::WaitForResult() {
20  if (!have_result_) {
21    result_ = PP_OK_COMPLETIONPENDING;  // Reset
22    post_quit_task_ = true;
23
24    // This waits until PPBTestingDev()->QuitMessageLoop() is called
25    // by the "Handler" which represents the actual callback code.
26    PPBTestingPrivate()->RunMessageLoop(instance_);
27  }
28  have_result_ = false;
29  return result_;
30}
31
32PP_CompletionCallback TestableCallback::GetCallback() {
33  int32_t flags = force_async_ ? 0 : PP_COMPLETIONCALLBACK_FLAG_OPTIONAL;
34  PP_CompletionCallback cc =
35    PP_MakeCompletionCallback(&TestableCallback::Handler, this);
36  cc.flags = flags;
37  return cc;
38}
39
40// static, so we can take it's address
41// This is the actual callback, all it does is record
42// the result and wake up whoever is block on
43// "WaitForResult"
44void TestableCallback::Handler(void* user_data, int32_t result) {
45  TestableCallback* callback = static_cast<TestableCallback*>(user_data);
46  callback->result_ = result;
47  callback->have_result_ = true;
48  ++callback->run_count_;
49  if (callback->post_quit_task_) {
50    callback->post_quit_task_ = false;
51    PPBTestingPrivate()->QuitMessageLoop(callback->instance_);
52  }
53}
54