| /* -*- c++ -*- */ |
| /* |
| * 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. |
| */ |
| |
| // A class containing information regarding a socket connection to a |
| // service runtime instance. |
| |
| #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SERVICE_RUNTIME_H_ |
| #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SERVICE_RUNTIME_H_ |
| |
| #include "native_client/src/include/nacl_macros.h" |
| #include "native_client/src/include/nacl_scoped_ptr.h" |
| #include "native_client/src/shared/platform/nacl_sync.h" |
| #include "native_client/src/shared/srpc/nacl_srpc.h" |
| #include "native_client/src/trusted/reverse_service/reverse_service.h" |
| #include "native_client/src/trusted/weak_ref/weak_ref.h" |
| |
| #include "ppapi/cpp/completion_callback.h" |
| #include "ppapi/native_client/src/trusted/plugin/utility.h" |
| |
| struct NaClFileInfo; |
| |
| namespace plugin { |
| |
| class ErrorInfo; |
| class Plugin; |
| class SelLdrLauncherChrome; |
| class SrpcClient; |
| class ServiceRuntime; |
| |
| // Struct of params used by StartSelLdr. Use a struct so that callback |
| // creation templates aren't overwhelmed with too many parameters. |
| struct SelLdrStartParams { |
| SelLdrStartParams(const std::string& url, |
| const PP_NaClFileInfo& file_info, |
| PP_NaClAppProcessType process_type) |
| : url(url), |
| file_info(file_info), |
| process_type(process_type) { |
| } |
| std::string url; |
| PP_NaClFileInfo file_info; |
| PP_NaClAppProcessType process_type; |
| }; |
| |
| // Callback resources are essentially our continuation state. |
| struct OpenManifestEntryResource { |
| public: |
| OpenManifestEntryResource(const std::string& target_url, |
| struct NaClFileInfo* finfo, |
| bool* op_complete) |
| : url(target_url), |
| file_info(finfo), |
| op_complete_ptr(op_complete) {} |
| ~OpenManifestEntryResource(); |
| |
| std::string url; |
| struct NaClFileInfo* file_info; |
| PP_NaClFileInfo pp_file_info; |
| bool* op_complete_ptr; |
| }; |
| |
| // Do not invoke from the main thread, since the main methods will |
| // invoke CallOnMainThread and then wait on a condvar for the task to |
| // complete: if invoked from the main thread, the main method not |
| // returning (and thus unblocking the main thread) means that the |
| // main-thread continuation methods will never get called, and thus |
| // we'd get a deadlock. |
| class PluginReverseInterface: public nacl::ReverseInterface { |
| public: |
| PluginReverseInterface(nacl::WeakRefAnchor* anchor, |
| PP_Instance pp_instance, |
| ServiceRuntime* service_runtime, |
| pp::CompletionCallback init_done_cb); |
| |
| virtual ~PluginReverseInterface(); |
| |
| void ShutDown(); |
| |
| virtual void DoPostMessage(std::string message); |
| |
| virtual void StartupInitializationComplete(); |
| |
| virtual bool OpenManifestEntry(std::string url_key, |
| struct NaClFileInfo *info); |
| |
| virtual void ReportCrash(); |
| |
| virtual void ReportExitStatus(int exit_status); |
| |
| // TODO(teravest): Remove this method once it's gone from |
| // nacl::ReverseInterface. |
| virtual int64_t RequestQuotaForWrite(std::string file_id, |
| int64_t offset, |
| int64_t bytes_to_write); |
| |
| protected: |
| virtual void OpenManifestEntry_MainThreadContinuation( |
| OpenManifestEntryResource* p, |
| int32_t err); |
| |
| virtual void StreamAsFile_MainThreadContinuation( |
| OpenManifestEntryResource* p, |
| int32_t result); |
| |
| private: |
| nacl::WeakRefAnchor* anchor_; // holds a ref |
| // Should be used only in main thread in WeakRef-protected callbacks. |
| PP_Instance pp_instance_; |
| ServiceRuntime* service_runtime_; |
| NaClMutex mu_; |
| NaClCondVar cv_; |
| bool shutting_down_; |
| |
| pp::CompletionCallback init_done_cb_; |
| }; |
| |
| // ServiceRuntime abstracts a NativeClient sel_ldr instance. |
| class ServiceRuntime { |
| public: |
| ServiceRuntime(Plugin* plugin, |
| PP_Instance pp_instance, |
| bool main_service_runtime, |
| bool uses_nonsfi_mode, |
| pp::CompletionCallback init_done_cb); |
| // The destructor terminates the sel_ldr process. |
| ~ServiceRuntime(); |
| |
| // Spawn the sel_ldr instance. |
| void StartSelLdr(const SelLdrStartParams& params, |
| pp::CompletionCallback callback); |
| |
| // If starting sel_ldr from a background thread, wait for sel_ldr to |
| // actually start. Returns |false| if timed out waiting for the process |
| // to start. Otherwise, returns |true| if StartSelLdr is complete |
| // (either successfully or unsuccessfully). |
| bool WaitForSelLdrStart(); |
| |
| // Signal to waiting threads that StartSelLdr is complete (either |
| // successfully or unsuccessfully). |
| void SignalStartSelLdrDone(); |
| |
| // If starting the nexe from a background thread, wait for the nexe to |
| // actually start. Returns |true| is the nexe started successfully. |
| bool WaitForNexeStart(); |
| |
| // Signal to waiting threads that LoadNexeAndStart is complete (either |
| // successfully or unsuccessfully). |
| void SignalNexeStarted(bool ok); |
| |
| // Establish an SrpcClient to the sel_ldr instance and start the nexe. |
| // This function must be called on the main thread. |
| // This function must only be called once. |
| void StartNexe(); |
| |
| // Starts the application channel to the nexe. |
| SrpcClient* SetupAppChannel(); |
| |
| bool RemoteLog(int severity, const std::string& msg); |
| Plugin* plugin() const { return plugin_; } |
| void Shutdown(); |
| |
| bool main_service_runtime() const { return main_service_runtime_; } |
| |
| private: |
| NACL_DISALLOW_COPY_AND_ASSIGN(ServiceRuntime); |
| bool StartNexeInternal(); |
| |
| bool SetupCommandChannel(); |
| bool InitReverseService(); |
| bool StartModule(); |
| void ReapLogs(); |
| |
| void ReportLoadError(const ErrorInfo& error_info); |
| |
| NaClSrpcChannel command_channel_; |
| Plugin* plugin_; |
| PP_Instance pp_instance_; |
| bool main_service_runtime_; |
| bool uses_nonsfi_mode_; |
| nacl::ReverseService* reverse_service_; |
| nacl::scoped_ptr<SelLdrLauncherChrome> subprocess_; |
| |
| nacl::WeakRefAnchor* anchor_; |
| |
| PluginReverseInterface* rev_interface_; |
| |
| // Mutex and CondVar to protect start_sel_ldr_done_ and nexe_started_. |
| NaClMutex mu_; |
| NaClCondVar cond_; |
| bool start_sel_ldr_done_; |
| bool start_nexe_done_; |
| bool nexe_started_ok_; |
| |
| NaClHandle bootstrap_channel_; |
| }; |
| |
| } // namespace plugin |
| |
| #endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SERVICE_RUNTIME_H_ |