src/content/app/android/child_process_service.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/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_manager.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 // TODO(sievers): Use two different implementations of this depending on if
  34 // we're in a renderer or gpu process.
  35 class SurfaceTextureManagerImpl : public SurfaceTextureManager,
  36                                   public SurfaceTexturePeer,
  37                                   public GpuSurfaceLookup {
  38  public:
  39   // |service| is the instance of
  40   // org.chromium.content.app.ChildProcessService.
  41   explicit SurfaceTextureManagerImpl(
  42       const base::android::ScopedJavaLocalRef<jobject>& service)
  43       : service_(service) {
  44     SurfaceTexturePeer::InitInstance(this);
  45     GpuSurfaceLookup::InitInstance(this);
  46   }
  47   virtual ~SurfaceTextureManagerImpl() {
  48     SurfaceTexturePeer::InitInstance(NULL);
  49     GpuSurfaceLookup::InitInstance(NULL);
  50   }
  51
  52   // Overridden from SurfaceTextureManager:
  53   virtual void RegisterSurfaceTexture(
  54       int surface_texture_id,
  55       int client_id,
  56       gfx::SurfaceTexture* surface_texture) override {
  57     JNIEnv* env = base::android::AttachCurrentThread();
  58     Java_ChildProcessService_createSurfaceTextureSurface(
  59         env,
  60         service_.obj(),
  61         surface_texture_id,
  62         client_id,
  63         surface_texture->j_surface_texture().obj());
  64   }
  65   virtual void UnregisterSurfaceTexture(int surface_texture_id,
  66                                         int client_id) override {
  67     JNIEnv* env = base::android::AttachCurrentThread();
  68     Java_ChildProcessService_destroySurfaceTextureSurface(
  69         env, service_.obj(), surface_texture_id, client_id);
  70   }
  71   virtual gfx::AcceleratedWidget AcquireNativeWidgetForSurfaceTexture(
  72       int surface_texture_id) override {
  73     JNIEnv* env = base::android::AttachCurrentThread();
  74     gfx::ScopedJavaSurface surface(
  75         Java_ChildProcessService_getSurfaceTextureSurface(env, service_.obj(),
  76                                                           surface_texture_id));
  77
  78     if (surface.j_surface().is_null())
  79       return NULL;
  80
  81     // Note: This ensures that any local references used by
  82     // ANativeWindow_fromSurface are released immediately. This is needed as a
  83     // workaround for https://code.google.com/p/android/issues/detail?id=68174
  84     base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
  85     ANativeWindow* native_window =
  86         ANativeWindow_fromSurface(env, surface.j_surface().obj());
  87
  88     return native_window;
  89   }
  90
  91   // Overridden from SurfaceTexturePeer:
  92   virtual void EstablishSurfaceTexturePeer(
  93       base::ProcessHandle pid,
  94       scoped_refptr<gfx::SurfaceTexture> surface_texture,
  95       int primary_id,
  96       int secondary_id) override {
  97     JNIEnv* env = base::android::AttachCurrentThread();
  98     content::Java_ChildProcessService_establishSurfaceTexturePeer(
  99         env,
 100         service_.obj(),
 101         pid,
 102         surface_texture->j_surface_texture().obj(),
 103         primary_id,
 104         secondary_id);
 105   }
 106
 107   // Overridden from GpuSurfaceLookup:
 108   virtual gfx::AcceleratedWidget AcquireNativeWidget(int surface_id) override {
 109     JNIEnv* env = base::android::AttachCurrentThread();
 110     gfx::ScopedJavaSurface surface(
 111         content::Java_ChildProcessService_getViewSurface(
 112             env, service_.obj(), surface_id));
 113
 114     if (surface.j_surface().is_null())
 115       return NULL;
 116
 117     // Note: This ensures that any local references used by
 118     // ANativeWindow_fromSurface are released immediately. This is needed as a
 119     // workaround for https://code.google.com/p/android/issues/detail?id=68174
 120     base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
 121     ANativeWindow* native_window =
 122         ANativeWindow_fromSurface(env, surface.j_surface().obj());
 123
 124     return native_window;
 125   }
 126
 127  private:
 128   // The instance of org.chromium.content.app.ChildProcessService.
 129   base::android::ScopedJavaGlobalRef<jobject> service_;
 130
 131   DISALLOW_COPY_AND_ASSIGN(SurfaceTextureManagerImpl);
 132 };
 133
 134 // Chrome actually uses the renderer code path for all of its child
 135 // processes such as renderers, plugins, etc.
 136 void InternalInitChildProcess(const std::vector<int>& file_ids,
 137                               const std::vector<int>& file_fds,
 138                               JNIEnv* env,
 139                               jclass clazz,
 140                               jobject context,
 141                               jobject service_in,
 142                               jint cpu_count,
 143                               jlong cpu_features) {
 144   base::android::ScopedJavaLocalRef<jobject> service(env, service_in);
 145
 146   // Set the CPU properties.
 147   android_setCpu(cpu_count, cpu_features);
 148   // Register the file descriptors.
 149   // This includes the IPC channel, the crash dump signals and resource related
 150   // files.
 151   DCHECK(file_fds.size() == file_ids.size());
 152   for (size_t i = 0; i < file_ids.size(); ++i)
 153     base::GlobalDescriptors::GetInstance()->Set(file_ids[i], file_fds[i]);
 154
 155   SurfaceTextureManager::InitInstance(new SurfaceTextureManagerImpl(service));
 156
 157   base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(env);
 158 }
 159
 160 }  // namespace <anonymous>
 161
 162 void InitChildProcess(JNIEnv* env,
 163                       jclass clazz,
 164                       jobject context,
 165                       jobject service,
 166                       jintArray j_file_ids,
 167                       jintArray j_file_fds,
 168                       jint cpu_count,
 169                       jlong cpu_features) {
 170   std::vector<int> file_ids;
 171   std::vector<int> file_fds;
 172   JavaIntArrayToIntVector(env, j_file_ids, &file_ids);
 173   JavaIntArrayToIntVector(env, j_file_fds, &file_fds);
 174
 175   InternalInitChildProcess(
 176       file_ids, file_fds, env, clazz, context, service,
 177       cpu_count, cpu_features);
 178 }
 179
 180 void ExitChildProcess(JNIEnv* env, jclass clazz) {
 181   VLOG(0) << "ChildProcessService: Exiting child process.";
 182   base::android::LibraryLoaderExitHook();
 183   _exit(0);
 184 }
 185
 186 bool RegisterChildProcessService(JNIEnv* env) {
 187   return RegisterNativesImpl(env);
 188 }
 189
 190 void ShutdownMainThread(JNIEnv* env, jobject obj) {
 191   ChildThread::ShutdownThread();
 192 }
 193
 194 }  // namespace content