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/library_loader/library_loader_hooks.h"
12 #include "base/android/memory_pressure_listener_android.h"
13 #include "base/logging.h"
14 #include "base/posix/global_descriptors.h"
15 #include "content/child/child_thread.h"
16 #include "content/common/android/surface_texture_lookup.h"
17 #include "content/common/android/surface_texture_peer.h"
18 #include "content/common/gpu/gpu_surface_lookup.h"
19 #include "content/public/app/android_library_loader_hooks.h"
20 #include "content/public/common/content_descriptors.h"
21 #include "ipc/ipc_descriptors.h"
22 #include "jni/ChildProcessService_jni.h"
23 #include "ui/gl/android/scoped_java_surface.h"
24
25 using base::android::AttachCurrentThread;
26 using base::android::CheckException;
27 using base::android::JavaIntArrayToIntVector;
28
29 namespace content {
30
31 namespace {
32
33 class SurfaceTexturePeerChildImpl : public SurfaceTexturePeer,
34 public GpuSurfaceLookup,
35 public SurfaceTextureLookup {
36 public:
37 // |service| is the instance of
38 // org.chromium.content.app.ChildProcessService.
SurfaceTexturePeerChildImpl(const base::android::ScopedJavaLocalRef<jobject> & service)39 explicit SurfaceTexturePeerChildImpl(
40 const base::android::ScopedJavaLocalRef<jobject>& service)
41 : service_(service) {
42 GpuSurfaceLookup::InitInstance(this);
43 SurfaceTextureLookup::InitInstance(this);
44 }
45
~SurfaceTexturePeerChildImpl()46 virtual ~SurfaceTexturePeerChildImpl() {
47 GpuSurfaceLookup::InitInstance(NULL);
48 SurfaceTextureLookup::InitInstance(NULL);
49 }
50
51 // Overridden from SurfaceTexturePeer:
EstablishSurfaceTexturePeer(base::ProcessHandle pid,scoped_refptr<gfx::SurfaceTexture> surface_texture,int primary_id,int secondary_id)52 virtual void EstablishSurfaceTexturePeer(
53 base::ProcessHandle pid,
54 scoped_refptr<gfx::SurfaceTexture> surface_texture,
55 int primary_id,
56 int secondary_id) OVERRIDE {
57 JNIEnv* env = base::android::AttachCurrentThread();
58 content::Java_ChildProcessService_establishSurfaceTexturePeer(
59 env, service_.obj(), pid,
60 surface_texture->j_surface_texture().obj(), primary_id,
61 secondary_id);
62 CheckException(env);
63 }
64
65 // Overridden from GpuSurfaceLookup:
AcquireNativeWidget(int surface_id)66 virtual gfx::AcceleratedWidget AcquireNativeWidget(int surface_id) OVERRIDE {
67 JNIEnv* env = base::android::AttachCurrentThread();
68 gfx::ScopedJavaSurface surface(
69 content::Java_ChildProcessService_getViewSurface(
70 env, service_.obj(), surface_id));
71
72 if (surface.j_surface().is_null())
73 return NULL;
74
75 // Note: This ensures that any local references used by
76 // ANativeWindow_fromSurface are released immediately. This is needed as a
77 // workaround for https://code.google.com/p/android/issues/detail?id=68174
78 base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
79 ANativeWindow* native_window =
80 ANativeWindow_fromSurface(env, surface.j_surface().obj());
81
82 return native_window;
83 }
84
85 // Overridden from SurfaceTextureLookup:
AcquireNativeWidget(int primary_id,int secondary_id)86 virtual gfx::AcceleratedWidget AcquireNativeWidget(int primary_id,
87 int secondary_id)
88 OVERRIDE {
89 JNIEnv* env = base::android::AttachCurrentThread();
90 gfx::ScopedJavaSurface surface(
91 content::Java_ChildProcessService_getSurfaceTextureSurface(
92 env, service_.obj(), primary_id, secondary_id));
93
94 if (surface.j_surface().is_null())
95 return NULL;
96
97 // Note: This ensures that any local references used by
98 // ANativeWindow_fromSurface are released immediately. This is needed as a
99 // workaround for https://code.google.com/p/android/issues/detail?id=68174
100 base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
101 ANativeWindow* native_window =
102 ANativeWindow_fromSurface(env, surface.j_surface().obj());
103
104 return native_window;
105 }
106
107 private:
108 // The instance of org.chromium.content.app.ChildProcessService.
109 base::android::ScopedJavaGlobalRef<jobject> service_;
110
111 DISALLOW_COPY_AND_ASSIGN(SurfaceTexturePeerChildImpl);
112 };
113
114 // Chrome actually uses the renderer code path for all of its child
115 // processes such as renderers, plugins, etc.
InternalInitChildProcess(const std::vector<int> & file_ids,const std::vector<int> & file_fds,JNIEnv * env,jclass clazz,jobject context,jobject service_in,jint cpu_count,jlong cpu_features)116 void InternalInitChildProcess(const std::vector<int>& file_ids,
117 const std::vector<int>& file_fds,
118 JNIEnv* env,
119 jclass clazz,
120 jobject context,
121 jobject service_in,
122 jint cpu_count,
123 jlong cpu_features) {
124 base::android::ScopedJavaLocalRef<jobject> service(env, service_in);
125
126 // Set the CPU properties.
127 android_setCpu(cpu_count, cpu_features);
128 // Register the file descriptors.
129 // This includes the IPC channel, the crash dump signals and resource related
130 // files.
131 DCHECK(file_fds.size() == file_ids.size());
132 for (size_t i = 0; i < file_ids.size(); ++i)
133 base::GlobalDescriptors::GetInstance()->Set(file_ids[i], file_fds[i]);
134
135 // SurfaceTexturePeerChildImpl implements the SurfaceTextureLookup interface,
136 // which need to be set before we create a compositor thread that could be
137 // using it to initialize resources.
138 content::SurfaceTexturePeer::InitInstance(
139 new SurfaceTexturePeerChildImpl(service));
140
141 base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(env);
142 }
143
144 } // namespace <anonymous>
145
InitChildProcess(JNIEnv * env,jclass clazz,jobject context,jobject service,jintArray j_file_ids,jintArray j_file_fds,jint cpu_count,jlong cpu_features)146 void InitChildProcess(JNIEnv* env,
147 jclass clazz,
148 jobject context,
149 jobject service,
150 jintArray j_file_ids,
151 jintArray j_file_fds,
152 jint cpu_count,
153 jlong cpu_features) {
154 std::vector<int> file_ids;
155 std::vector<int> file_fds;
156 JavaIntArrayToIntVector(env, j_file_ids, &file_ids);
157 JavaIntArrayToIntVector(env, j_file_fds, &file_fds);
158
159 InternalInitChildProcess(
160 file_ids, file_fds, env, clazz, context, service,
161 cpu_count, cpu_features);
162 }
163
ExitChildProcess(JNIEnv * env,jclass clazz)164 void ExitChildProcess(JNIEnv* env, jclass clazz) {
165 VLOG(0) << "ChildProcessService: Exiting child process.";
166 base::android::LibraryLoaderExitHook();
167 _exit(0);
168 }
169
RegisterChildProcessService(JNIEnv * env)170 bool RegisterChildProcessService(JNIEnv* env) {
171 return RegisterNativesImpl(env);
172 }
173
ShutdownMainThread(JNIEnv * env,jobject obj)174 void ShutdownMainThread(JNIEnv* env, jobject obj) {
175 ChildThread::ShutdownThread();
176 }
177
178 } // namespace content
179