content/app/android/content_main.cc

   1 // Copyright (c) 2012 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 "content/app/android/content_main.h"
   6
   7 #include "base/at_exit.h"
   8 #include "base/base_switches.h"
   9 #include "base/command_line.h"
  10 #include "base/lazy_instance.h"
  11 #include "base/trace_event/trace_event.h"
  12 #include "content/public/app/content_main.h"
  13 #include "content/public/app/content_main_delegate.h"
  14 #include "content/public/app/content_main_runner.h"
  15 #include "content/public/common/content_switches.h"
  16 #include "jni/ContentMain_jni.h"
  17
  18 using base::LazyInstance;
  19
  20 namespace content {
  21
  22 namespace {
  23 LazyInstance<scoped_ptr<ContentMainRunner> > g_content_runner =
  24     LAZY_INSTANCE_INITIALIZER;
  25
  26 LazyInstance<scoped_ptr<ContentMainDelegate> > g_content_main_delegate =
  27     LAZY_INSTANCE_INITIALIZER;
  28
  29 }  // namespace
  30
  31 static void InitApplicationContext(JNIEnv* env,
  32                                    const JavaParamRef<jclass>& clazz,
  33                                    const JavaParamRef<jobject>& context) {
  34   base::android::InitApplicationContext(env, context);
  35 }
  36
  37 static jint Start(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
  38   TRACE_EVENT0("startup", "content::Start");
  39
  40   // On Android we can have multiple requests to start the browser in process
  41   // simultaneously. If we get an asynchonous request followed by a synchronous
  42   // request then we have to call this a second time to finish starting the
  43   // browser synchronously.
  44   if (!g_content_runner.Get().get()) {
  45     ContentMainParams params(g_content_main_delegate.Get().get());
  46     g_content_runner.Get().reset(ContentMainRunner::Create());
  47     g_content_runner.Get()->Initialize(params);
  48   }
  49   return g_content_runner.Get()->Run();
  50 }
  51
  52 void SetContentMainDelegate(ContentMainDelegate* delegate) {
  53   DCHECK(!g_content_main_delegate.Get().get());
  54   g_content_main_delegate.Get().reset(delegate);
  55 }
  56
  57 bool RegisterContentMain(JNIEnv* env) {
  58   return RegisterNativesImpl(env);
  59 }
  60
  61 }  // namespace content