| // 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_ |