Upstream: Renderers are running in WebAPKs.

content/app/android/child_process_service.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "content/app/android/child_process_service.h"
-
-#include <android/native_window_jni.h>
-#include <cpu-features.h>
-
-#include "base/android/jni_array.h"
-#include "base/android/library_loader/library_loader_hooks.h"
-#include "base/android/memory_pressure_listener_android.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/posix/global_descriptors.h"
-#include "content/child/child_thread_impl.h"
-#include "content/public/common/content_descriptors.h"
-#include "gpu/ipc/common/android/surface_texture_manager.h"
-#include "gpu/ipc/common/android/surface_texture_peer.h"
-#include "gpu/ipc/common/gpu_surface_lookup.h"
-#include "ipc/ipc_descriptors.h"
-#include "jni/ChildProcessService_jni.h"
-#include "ui/gl/android/scoped_java_surface.h"
-
-using base::android::AttachCurrentThread;
-using base::android::CheckException;
-using base::android::JavaIntArrayToIntVector;
-
-namespace content {
-
-namespace {
-
-// TODO(sievers): Use two different implementations of this depending on if
-// we're in a renderer or gpu process.
-class SurfaceTextureManagerImpl : public gpu::SurfaceTextureManager,
-                                  public gpu::SurfaceTexturePeer,
-                                  public gpu::GpuSurfaceLookup {
- public:
-  // |service| is the instance of
-  // org.chromium.content.app.ChildProcessService.
-  explicit SurfaceTextureManagerImpl(
-      const base::android::JavaRef<jobject>& service)
-      : service_(service) {
-    SurfaceTexturePeer::InitInstance(this);
-    gpu::GpuSurfaceLookup::InitInstance(this);
-  }
-  ~SurfaceTextureManagerImpl() override {
-    SurfaceTexturePeer::InitInstance(NULL);
-    gpu::GpuSurfaceLookup::InitInstance(NULL);
-  }
-
-  // Overridden from SurfaceTextureManager:
-  void RegisterSurfaceTexture(int surface_texture_id,
-                              int client_id,
-                              gl::SurfaceTexture* surface_texture) override {
-    JNIEnv* env = base::android::AttachCurrentThread();
-    Java_ChildProcessService_createSurfaceTextureSurface(
-        env,
-        service_.obj(),
-        surface_texture_id,
-        client_id,
-        surface_texture->j_surface_texture().obj());
-  }
-  void UnregisterSurfaceTexture(int surface_texture_id,
-                                int client_id) override {
-    JNIEnv* env = base::android::AttachCurrentThread();
-    Java_ChildProcessService_destroySurfaceTextureSurface(
-        env, service_.obj(), surface_texture_id, client_id);
-  }
-  gfx::AcceleratedWidget AcquireNativeWidgetForSurfaceTexture(
-      int surface_texture_id) override {
-    JNIEnv* env = base::android::AttachCurrentThread();
-    gl::ScopedJavaSurface surface(
-        Java_ChildProcessService_getSurfaceTextureSurface(env, service_.obj(),
-                                                          surface_texture_id));
-
-    if (surface.j_surface().is_null())
-      return NULL;
-
-    // Note: This ensures that any local references used by
-    // ANativeWindow_fromSurface are released immediately. This is needed as a
-    // workaround for https://code.google.com/p/android/issues/detail?id=68174
-    base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
-    ANativeWindow* native_window =
-        ANativeWindow_fromSurface(env, surface.j_surface().obj());
-
-    return native_window;
-  }
-
-  // Overridden from SurfaceTexturePeer:
-  void EstablishSurfaceTexturePeer(
-      base::ProcessHandle pid,
-      scoped_refptr<gl::SurfaceTexture> surface_texture,
-      int primary_id,
-      int secondary_id) override {
-    JNIEnv* env = base::android::AttachCurrentThread();
-    content::Java_ChildProcessService_establishSurfaceTexturePeer(
-        env,
-        service_.obj(),
-        pid,
-        surface_texture->j_surface_texture().obj(),
-        primary_id,
-        secondary_id);
-  }
-
-  // Overridden from GpuSurfaceLookup:
-  gfx::AcceleratedWidget AcquireNativeWidget(int surface_id) override {
-    JNIEnv* env = base::android::AttachCurrentThread();
-    gl::ScopedJavaSurface surface(
-        content::Java_ChildProcessService_getViewSurface(env, service_.obj(),
-                                                         surface_id));
-
-    if (surface.j_surface().is_null())
-      return NULL;
-
-    // Note: This ensures that any local references used by
-    // ANativeWindow_fromSurface are released immediately. This is needed as a
-    // workaround for https://code.google.com/p/android/issues/detail?id=68174
-    base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
-    ANativeWindow* native_window =
-        ANativeWindow_fromSurface(env, surface.j_surface().obj());
-
-    return native_window;
-  }
-
-  // Overridden from GpuSurfaceLookup:
-  gl::ScopedJavaSurface AcquireJavaSurface(int surface_id) override {
-    JNIEnv* env = base::android::AttachCurrentThread();
-    return gl::ScopedJavaSurface(
-        content::Java_ChildProcessService_getViewSurface(env, service_.obj(),
-                                                         surface_id));
-  }
-
- private:
-  // The instance of org.chromium.content.app.ChildProcessService.
-  base::android::ScopedJavaGlobalRef<jobject> service_;
-
-  DISALLOW_COPY_AND_ASSIGN(SurfaceTextureManagerImpl);
-};
-
-// Chrome actually uses the renderer code path for all of its child
-// processes such as renderers, plugins, etc.
-void InternalInitChildProcess(JNIEnv* env,
-                              const JavaParamRef<jobject>& service,
-                              jint cpu_count,
-                              jlong cpu_features) {
-  // Set the CPU properties.
-  android_setCpu(cpu_count, cpu_features);
-  gpu::SurfaceTextureManager::SetInstance(
-      new SurfaceTextureManagerImpl(service));
-
-  base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(env);
-}
-
-}  // namespace <anonymous>
-
-void RegisterGlobalFileDescriptor(JNIEnv* env,
-                                  const JavaParamRef<jclass>& clazz,
-                                  jint id,
-                                  jint fd,
-                                  jlong offset,
-                                  jlong size) {
-  base::MemoryMappedFile::Region region = {offset, size};
-  base::GlobalDescriptors::GetInstance()->Set(id, fd, region);
-}
-
-void InitChildProcess(JNIEnv* env,
-                      const JavaParamRef<jclass>& clazz,
-                      const JavaParamRef<jobject>& service,
-                      jint cpu_count,
-                      jlong cpu_features) {
-  InternalInitChildProcess(env, service, cpu_count, cpu_features);
-}
-
-void ExitChildProcess(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
-  VLOG(0) << "ChildProcessService: Exiting child process.";
-  base::android::LibraryLoaderExitHook();
-  _exit(0);
-}
-
-bool RegisterChildProcessService(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-void ShutdownMainThread(JNIEnv* env, const JavaParamRef<jobject>& obj) {
-  ChildThreadImpl::ShutdownThread();
-}
-
-}  // namespace content