// 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" struct PP_PNaClOptions; namespace nacl { class DescWrapper; } namespace plugin { class NaClSubprocess; class Plugin; class PnaclCoordinator; class PnaclResources; class TempFile; 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 std::vector<TempFile*>* obj_files, TempFile* nexe_file, nacl::DescWrapper* invalid_desc_wrapper, ErrorInfo* error_info, PnaclResources* resources, PP_PNaClOptions* pnacl_options, const nacl::string &architecture_attributes, 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); int64_t GetCompileTime() const { return compile_time_; } private: // 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(PP_NaClError err_code, const nacl::string& error_string); // Run the LD subprocess, returning true on success. // On failure, it returns false and runs the callback. bool RunLdSubprocess(); // 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_; bool subprocesses_aborted_; // 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_; int64_t compile_time_; // Data about the translation files, owned by the coordinator const std::vector<TempFile*>* obj_files_; TempFile* nexe_file_; nacl::DescWrapper* invalid_desc_wrapper_; ErrorInfo* coordinator_error_info_; PnaclResources* resources_; PP_PNaClOptions* pnacl_options_; nacl::string architecture_attributes_; PnaclCoordinator* coordinator_; Plugin* plugin_; private: NACL_DISALLOW_COPY_AND_ASSIGN(PnaclTranslateThread); }; } #endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_