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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "ppapi/proxy/host_dispatcher.h" | 5 #include "ppapi/proxy/host_dispatcher.h" |
| 6 | 6 |
| 7 #include <map> | 7 #include <map> |
| 8 | 8 |
| 9 #include "base/debug/trace_event.h" |
| 9 #include "base/logging.h" | 10 #include "base/logging.h" |
| 10 #include "gpu/common/gpu_trace_event.h" | |
| 11 #include "ppapi/c/private/ppb_proxy_private.h" | 11 #include "ppapi/c/private/ppb_proxy_private.h" |
| 12 #include "ppapi/c/dev/ppb_var_deprecated.h" | 12 #include "ppapi/c/dev/ppb_var_deprecated.h" |
| 13 #include "ppapi/proxy/host_var_serialization_rules.h" | 13 #include "ppapi/proxy/host_var_serialization_rules.h" |
| 14 #include "ppapi/proxy/ppapi_messages.h" | 14 #include "ppapi/proxy/ppapi_messages.h" |
| 15 | 15 |
| 16 namespace pp { | 16 namespace pp { |
| 17 namespace proxy { | 17 namespace proxy { |
| 18 | 18 |
| 19 namespace { | 19 namespace { |
| 20 | 20 |
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| 122 instance); | 122 instance); |
| 123 if (found != g_instance_to_dispatcher->end()) | 123 if (found != g_instance_to_dispatcher->end()) |
| 124 g_instance_to_dispatcher->erase(found); | 124 g_instance_to_dispatcher->erase(found); |
| 125 } | 125 } |
| 126 | 126 |
| 127 bool HostDispatcher::IsPlugin() const { | 127 bool HostDispatcher::IsPlugin() const { |
| 128 return false; | 128 return false; |
| 129 } | 129 } |
| 130 | 130 |
| 131 bool HostDispatcher::Send(IPC::Message* msg) { | 131 bool HostDispatcher::Send(IPC::Message* msg) { |
| 132 GPU_TRACE_EVENT2("ppapi proxy", "HostDispatcher::Send", | 132 TRACE_EVENT2("ppapi proxy", "HostDispatcher::Send", |
| 133 "Class", IPC_MESSAGE_ID_CLASS(msg->type()), | 133 "Class", IPC_MESSAGE_ID_CLASS(msg->type()), |
| 134 "Line", IPC_MESSAGE_ID_LINE(msg->type())); | 134 "Line", IPC_MESSAGE_ID_LINE(msg->type())); |
| 135 // Normal sync messages are set to unblock, which would normally cause the | 135 // Normal sync messages are set to unblock, which would normally cause the |
| 136 // plugin to be reentered to process them. We only want to do this when we | 136 // plugin to be reentered to process them. We only want to do this when we |
| 137 // know the plugin is in a state to accept reentrancy. Since the plugin side | 137 // know the plugin is in a state to accept reentrancy. Since the plugin side |
| 138 // never clears this flag on messages it sends, we can't get deadlock, but we | 138 // never clears this flag on messages it sends, we can't get deadlock, but we |
| 139 // may still get reentrancy in the host as a result. | 139 // may still get reentrancy in the host as a result. |
| 140 if (!allow_plugin_reentrancy_) | 140 if (!allow_plugin_reentrancy_) |
| 141 msg->set_unblock(false); | 141 msg->set_unblock(false); |
| 142 return Dispatcher::Send(msg); | 142 return Dispatcher::Send(msg); |
| 143 } | 143 } |
| 144 | 144 |
| 145 bool HostDispatcher::OnMessageReceived(const IPC::Message& msg) { | 145 bool HostDispatcher::OnMessageReceived(const IPC::Message& msg) { |
| 146 GPU_TRACE_EVENT2("ppapi proxy", "HostDispatcher::OnMessageReceived", | 146 TRACE_EVENT2("ppapi proxy", "HostDispatcher::OnMessageReceived", |
| 147 "Class", IPC_MESSAGE_ID_CLASS(msg.type()), | 147 "Class", IPC_MESSAGE_ID_CLASS(msg.type()), |
| 148 "Line", IPC_MESSAGE_ID_LINE(msg.type())); | 148 "Line", IPC_MESSAGE_ID_LINE(msg.type())); |
| 149 // We only want to allow reentrancy when the most recent message from the | 149 // We only want to allow reentrancy when the most recent message from the |
| 150 // plugin was a scripting message. We save the old state of the flag on the | 150 // plugin was a scripting message. We save the old state of the flag on the |
| 151 // stack in case we're (we are the host) being reentered ourselves. The flag | 151 // stack in case we're (we are the host) being reentered ourselves. The flag |
| 152 // is set to false here for all messages, and then the scripting API will | 152 // is set to false here for all messages, and then the scripting API will |
| 153 // explicitly set it to true during processing of those messages that can be | 153 // explicitly set it to true during processing of those messages that can be |
| 154 // reentered. | 154 // reentered. |
| 155 BoolRestorer restorer(&allow_plugin_reentrancy_); | 155 BoolRestorer restorer(&allow_plugin_reentrancy_); |
| 156 allow_plugin_reentrancy_ = false; | 156 allow_plugin_reentrancy_ = false; |
| 157 | 157 |
| 158 // Handle common control messages. | 158 // Handle common control messages. |
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| 256 dispatcher_->ppb_proxy()->AddRefModule(dispatcher_->pp_module()); | 256 dispatcher_->ppb_proxy()->AddRefModule(dispatcher_->pp_module()); |
| 257 } | 257 } |
| 258 | 258 |
| 259 ScopedModuleReference::~ScopedModuleReference() { | 259 ScopedModuleReference::~ScopedModuleReference() { |
| 260 dispatcher_->ppb_proxy()->ReleaseModule(dispatcher_->pp_module()); | 260 dispatcher_->ppb_proxy()->ReleaseModule(dispatcher_->pp_module()); |
| 261 } | 261 } |
| 262 | 262 |
| 263 } // namespace proxy | 263 } // namespace proxy |
| 264 } // namespace pp | 264 } // namespace pp |
| 265 | 265 |
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