// 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. #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_ #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_ #include <deque> #include <vector> #include "native_client/src/include/nacl_macros.h" #include "native_client/src/include/nacl_scoped_ptr.h" #include "native_client/src/include/nacl_string.h" #include "native_client/src/shared/platform/nacl_threads.h" #include "native_client/src/shared/platform/nacl_sync_checked.h" #include "ppapi/cpp/completion_callback.h" #include "ppapi/native_client/src/trusted/plugin/plugin_error.h" #include "ppapi/native_client/src/trusted/plugin/service_runtime.h" namespace nacl { class DescWrapper; } namespace plugin { class Manifest; class NaClSubprocess; class Plugin; class PnaclCoordinator; class PnaclOptions; class PnaclResources; class TempFile; struct PnaclTimeStats { int64_t pnacl_llc_load_time; int64_t pnacl_compile_time; int64_t pnacl_ld_load_time; int64_t pnacl_link_time; }; class PnaclTranslateThread { public: PnaclTranslateThread(); ~PnaclTranslateThread(); // Start the translation process. It will continue to run and consume data // as it is passed in with PutBytes. void RunTranslate(const pp::CompletionCallback& finish_callback, const Manifest* manifest, TempFile* obj_file, TempFile* nexe_file, ErrorInfo* error_info, PnaclResources* resources, PnaclOptions* pnacl_options, PnaclCoordinator* coordinator, Plugin* plugin); // Kill the llc and/or ld subprocesses. This happens by closing the command // channel on the plugin side, which causes the trusted code in the nexe to // exit, which will cause any pending SRPCs to error. Because this is called // on the main thread, the translation thread must not use the subprocess // objects without the lock, other than InvokeSrpcMethod, which does not // race with service runtime shutdown. void AbortSubprocesses(); // Send bitcode bytes to the translator. Called from the main thread. void PutBytes(std::vector<char>* data, int count); const PnaclTimeStats& GetTimeStats() const { return time_stats_; } private: // Starts an individual llc or ld subprocess used for translation. NaClSubprocess* StartSubprocess(const nacl::string& url, const Manifest* manifest, ErrorInfo* error_info); // Helper thread entry point for translation. Takes a pointer to // PnaclTranslateThread and calls DoTranslate(). static void WINAPI DoTranslateThread(void* arg); // Runs the streaming translation. Called from the helper thread. void DoTranslate() ; // Signal that Pnacl translation failed, from the translation thread only. void TranslateFailed(enum PluginErrorCode err_code, const nacl::string& error_string); // Run the LD subprocess, returning true on success bool RunLdSubprocess(int is_shared_library, const nacl::string& soname, const nacl::string& lib_dependencies); // Callback to run when tasks are completed or an error has occurred. pp::CompletionCallback report_translate_finished_; nacl::scoped_ptr<NaClThread> translate_thread_; // Used to guard llc_subprocess and ld_subprocess struct NaClMutex subprocess_mu_; nacl::scoped_ptr<NaClSubprocess> llc_subprocess_; nacl::scoped_ptr<NaClSubprocess> ld_subprocess_; // Used to ensure the subprocesses don't get shutdown more than once. bool llc_subprocess_active_; bool ld_subprocess_active_; // Condition variable to synchronize communication with the SRPC thread. // SRPC thread waits on this condvar if data_buffers_ is empty (meaning // there is no bitcode to send to the translator), and the main thread // appends to data_buffers_ and signals it when it receives bitcode. struct NaClCondVar buffer_cond_; // Mutex for buffer_cond_. struct NaClMutex cond_mu_; // Data buffers from FileDownloader are enqueued here to pass from the // main thread to the SRPC thread. Protected by cond_mu_ std::deque<std::vector<char> > data_buffers_; // Whether all data has been downloaded and copied to translation thread. // Associated with buffer_cond_ bool done_; PnaclTimeStats time_stats_; // Data about the translation files, owned by the coordinator const Manifest* manifest_; TempFile* obj_file_; TempFile* nexe_file_; ErrorInfo* coordinator_error_info_; PnaclResources* resources_; PnaclOptions* pnacl_options_; PnaclCoordinator* coordinator_; Plugin* plugin_; private: NACL_DISALLOW_COPY_AND_ASSIGN(PnaclTranslateThread); }; } #endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_