1 // Copyright 2014 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.
5 #include "mojo/shell/in_process_dynamic_service_runner.h"
8 #include "base/callback_helpers.h"
9 #include "base/location.h"
10 #include "base/logging.h"
11 #include "base/message_loop/message_loop_proxy.h"
12 #include "mojo/public/platform/native/gles2_impl_chromium_sync_point_thunks.h"
13 #include "mojo/public/platform/native/gles2_impl_chromium_texture_mailbox_thunks.h"
14 #include "mojo/public/platform/native/gles2_impl_thunks.h"
15 #include "mojo/public/platform/native/gles2_thunks.h"
16 #include "mojo/public/platform/native/system_thunks.h"
23 template <typename Thunks>
24 bool SetThunks(Thunks (*make_thunks)(),
25 const char* function_name,
26 base::ScopedNativeLibrary* library) {
27 typedef size_t (*SetThunksFn)(const Thunks* thunks);
28 SetThunksFn set_thunks =
29 reinterpret_cast<SetThunksFn>(library->GetFunctionPointer(function_name));
32 Thunks thunks = make_thunks();
33 size_t expected_size = set_thunks(&thunks);
34 if (expected_size > sizeof(Thunks)) {
35 LOG(ERROR) << "Invalid app library: expected " << function_name
36 << " to return thunks of size: " << expected_size;
43 InProcessDynamicServiceRunner::InProcessDynamicServiceRunner(
45 : keep_alive_(context) {
48 InProcessDynamicServiceRunner::~InProcessDynamicServiceRunner() {
50 DCHECK(thread_->HasBeenStarted());
51 DCHECK(!thread_->HasBeenJoined());
55 // It is important to let the thread exit before unloading the DSO because
56 // the library may have registered thread-local data and destructors to run
57 // on thread termination.
58 app_library_.Reset(base::NativeLibrary());
61 void InProcessDynamicServiceRunner::Start(
62 const base::FilePath& app_path,
63 ScopedMessagePipeHandle service_handle,
64 const base::Closure& app_completed_callback) {
67 DCHECK(!service_handle_.is_valid());
68 service_handle_ = service_handle.Pass();
70 DCHECK(app_completed_callback_runner_.is_null());
71 app_completed_callback_runner_ = base::Bind(&base::TaskRunner::PostTask,
72 base::MessageLoopProxy::current(),
74 app_completed_callback);
77 thread_.reset(new base::DelegateSimpleThread(this, "app_thread"));
81 void InProcessDynamicServiceRunner::Run() {
82 DVLOG(2) << "Loading/running Mojo app in process from library: "
86 base::NativeLibraryLoadError error;
87 app_library_.Reset(base::LoadNativeLibrary(app_path_, &error));
88 if (!app_library_.is_valid()) {
89 LOG(ERROR) << "Failed to load app library (error: " << error.ToString()
95 &MojoMakeSystemThunks, "MojoSetSystemThunks", &app_library_)) {
96 // In the component build, Mojo Apps link against mojo_system_impl.
97 #if !defined(COMPONENT_BUILD)
98 // Strictly speaking this is not required, but it's very unusual to have
99 // an app that doesn't require the basic system library.
100 LOG(WARNING) << "MojoSetSystemThunks not found in app library";
104 if (SetThunks(&MojoMakeGLES2ControlThunks,
105 "MojoSetGLES2ControlThunks",
107 // If we have the control thunks, we probably also have the
108 // GLES2 implementation thunks.
109 if (!SetThunks(&MojoMakeGLES2ImplThunks,
110 "MojoSetGLES2ImplThunks",
112 // In the component build, Mojo Apps link against mojo_gles2_impl.
113 #if !defined(COMPONENT_BUILD)
114 // Warn on this really weird case: The library requires the GLES2
115 // control functions, but doesn't require the GLES2 implementation.
116 LOG(WARNING) << "App library has MojoSetGLES2ControlThunks, but "
117 "doesn't have MojoSetGLES2ImplThunks.";
121 // If the application is using GLES2 extension points, register those
122 // thunks. Applications may use or not use any of these, so don't warn if
124 SetThunks(MojoMakeGLES2ImplChromiumTextureMailboxThunks,
125 "MojoSetGLES2ImplChromiumTextureMailboxThunks",
127 SetThunks(MojoMakeGLES2ImplChromiumSyncPointThunks,
128 "MojoSetGLES2ImplChromiumSyncPointThunks",
131 // Unlike system thunks, we don't warn on a lack of GLES2 thunks because
132 // not everything is a visual app.
134 typedef MojoResult (*MojoMainFunction)(MojoHandle);
135 MojoMainFunction main_function = reinterpret_cast<MojoMainFunction>(
136 app_library_.GetFunctionPointer("MojoMain"));
137 if (!main_function) {
138 LOG(ERROR) << "Entrypoint MojoMain not found";
142 // |MojoMain()| takes ownership of the service handle.
143 MojoResult result = main_function(service_handle_.release().value());
144 if (result < MOJO_RESULT_OK)
145 LOG(ERROR) << "MojoMain returned an error: " << result;
148 bool success = app_completed_callback_runner_.Run();
149 app_completed_callback_runner_.Reset();
150 LOG_IF(ERROR, !success) << "Failed post run app_completed_callback";