child_process_service.cc revision f2477e01787aa58f445919b809d89e252beef54f 
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/child_process_service.h"
6
7#include <android/native_window_jni.h>
8#include <cpu-features.h>
9
10#include "base/android/jni_array.h"
11#include "base/android/memory_pressure_listener_android.h"
12#include "base/logging.h"
13#include "base/posix/global_descriptors.h"
14#include "content/child/child_thread.h"
15#include "content/common/android/surface_texture_peer.h"
16#include "content/common/gpu/gpu_surface_lookup.h"
17#include "content/public/app/android_library_loader_hooks.h"
18#include "content/public/common/content_descriptors.h"
19#include "ipc/ipc_descriptors.h"
20#include "jni/ChildProcessService_jni.h"
21#include "ui/gl/android/scoped_java_surface.h"
22
23using base::android::AttachCurrentThread;
24using base::android::CheckException;
25using base::android::JavaIntArrayToIntVector;
26
27namespace content {
28
29namespace {
30
31class SurfaceTexturePeerChildImpl : public content::SurfaceTexturePeer,
32                                    public content::GpuSurfaceLookup {
33 public:
34  // |service| is the instance of
35  // org.chromium.content.app.ChildProcessService.
36  explicit SurfaceTexturePeerChildImpl(
37      const base::android::ScopedJavaLocalRef<jobject>& service)
38      : service_(service) {
39    GpuSurfaceLookup::InitInstance(this);
40  }
41
42  virtual ~SurfaceTexturePeerChildImpl() {
43    GpuSurfaceLookup::InitInstance(NULL);
44  }
45
46  virtual void EstablishSurfaceTexturePeer(
47      base::ProcessHandle pid,
48      scoped_refptr<gfx::SurfaceTexture> surface_texture,
49      int primary_id,
50      int secondary_id) OVERRIDE {
51    JNIEnv* env = base::android::AttachCurrentThread();
52    content::Java_ChildProcessService_establishSurfaceTexturePeer(
53        env, service_.obj(), pid,
54        surface_texture->j_surface_texture().obj(), primary_id,
55        secondary_id);
56    CheckException(env);
57  }
58
59  virtual gfx::AcceleratedWidget AcquireNativeWidget(int surface_id) OVERRIDE {
60    JNIEnv* env = base::android::AttachCurrentThread();
61    gfx::ScopedJavaSurface surface(
62        content::Java_ChildProcessService_getViewSurface(
63        env, service_.obj(), surface_id));
64
65    if (surface.j_surface().is_null())
66      return NULL;
67
68    ANativeWindow* native_window = ANativeWindow_fromSurface(
69        env, surface.j_surface().obj());
70
71    return native_window;
72  }
73
74 private:
75  // The instance of org.chromium.content.app.ChildProcessService.
76  base::android::ScopedJavaGlobalRef<jobject> service_;
77
78  DISALLOW_COPY_AND_ASSIGN(SurfaceTexturePeerChildImpl);
79};
80
81// Chrome actually uses the renderer code path for all of its child
82// processes such as renderers, plugins, etc.
83void InternalInitChildProcess(const std::vector<int>& file_ids,
84                              const std::vector<int>& file_fds,
85                              JNIEnv* env,
86                              jclass clazz,
87                              jobject context,
88                              jobject service_in,
89                              jint cpu_count,
90                              jlong cpu_features) {
91  base::android::ScopedJavaLocalRef<jobject> service(env, service_in);
92
93  // Set the CPU properties.
94  android_setCpu(cpu_count, cpu_features);
95  // Register the file descriptors.
96  // This includes the IPC channel, the crash dump signals and resource related
97  // files.
98  DCHECK(file_fds.size() == file_ids.size());
99  for (size_t i = 0; i < file_ids.size(); ++i)
100    base::GlobalDescriptors::GetInstance()->Set(file_ids[i], file_fds[i]);
101
102  content::SurfaceTexturePeer::InitInstance(
103      new SurfaceTexturePeerChildImpl(service));
104
105  base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(env);
106}
107
108}  // namespace <anonymous>
109
110void InitChildProcess(JNIEnv* env,
111                      jclass clazz,
112                      jobject context,
113                      jobject service,
114                      jintArray j_file_ids,
115                      jintArray j_file_fds,
116                      jint cpu_count,
117                      jlong cpu_features) {
118  std::vector<int> file_ids;
119  std::vector<int> file_fds;
120  JavaIntArrayToIntVector(env, j_file_ids, &file_ids);
121  JavaIntArrayToIntVector(env, j_file_fds, &file_fds);
122
123  InternalInitChildProcess(
124      file_ids, file_fds, env, clazz, context, service,
125      cpu_count, cpu_features);
126}
127
128void ExitChildProcess(JNIEnv* env, jclass clazz) {
129  VLOG(0) << "ChildProcessService: Exiting child process.";
130  LibraryLoaderExitHook();
131  _exit(0);
132}
133
134bool RegisterChildProcessService(JNIEnv* env) {
135  return RegisterNativesImpl(env);
136}
137
138void ShutdownMainThread(JNIEnv* env, jobject obj) {
139  ChildThread::ShutdownThread();
140}
141
142}  // namespace content
143