1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_
6 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_
11 #include "native_client/src/include/nacl_macros.h"
12 #include "native_client/src/include/nacl_scoped_ptr.h"
13 #include "native_client/src/include/nacl_string.h"
14 #include "native_client/src/shared/platform/nacl_threads.h"
15 #include "native_client/src/shared/platform/nacl_sync_checked.h"
17 #include "ppapi/cpp/completion_callback.h"
19 #include "ppapi/native_client/src/trusted/plugin/plugin_error.h"
20 #include "ppapi/native_client/src/trusted/plugin/service_runtime.h"
22 struct PP_PNaClOptions;
33 class PnaclCoordinator;
37 class PnaclTranslateThread {
39 PnaclTranslateThread();
40 ~PnaclTranslateThread();
42 // Start the translation process. It will continue to run and consume data
43 // as it is passed in with PutBytes.
44 void RunTranslate(const pp::CompletionCallback& finish_callback,
46 const std::vector<TempFile*>* obj_files,
48 nacl::DescWrapper* invalid_desc_wrapper,
49 ErrorInfo* error_info,
50 PnaclResources* resources,
51 PP_PNaClOptions* pnacl_options,
52 const nacl::string &architecture_attributes,
53 PnaclCoordinator* coordinator,
56 // Kill the llc and/or ld subprocesses. This happens by closing the command
57 // channel on the plugin side, which causes the trusted code in the nexe to
58 // exit, which will cause any pending SRPCs to error. Because this is called
59 // on the main thread, the translation thread must not use the subprocess
60 // objects without the lock, other than InvokeSrpcMethod, which does not
61 // race with service runtime shutdown.
62 void AbortSubprocesses();
64 // Send bitcode bytes to the translator. Called from the main thread.
65 void PutBytes(std::vector<char>* data, int count);
67 int64_t GetCompileTime() const { return compile_time_; }
70 // Starts an individual llc or ld subprocess used for translation.
71 NaClSubprocess* StartSubprocess(const nacl::string& url,
73 ErrorInfo* error_info);
74 // Helper thread entry point for translation. Takes a pointer to
75 // PnaclTranslateThread and calls DoTranslate().
76 static void WINAPI DoTranslateThread(void* arg);
77 // Runs the streaming translation. Called from the helper thread.
79 // Signal that Pnacl translation failed, from the translation thread only.
80 void TranslateFailed(PP_NaClError err_code,
81 const nacl::string& error_string);
82 // Run the LD subprocess, returning true on success.
83 // On failure, it returns false and runs the callback.
84 bool RunLdSubprocess();
87 // Callback to run when tasks are completed or an error has occurred.
88 pp::CompletionCallback report_translate_finished_;
90 nacl::scoped_ptr<NaClThread> translate_thread_;
92 // Used to guard llc_subprocess and ld_subprocess
93 struct NaClMutex subprocess_mu_;
94 nacl::scoped_ptr<NaClSubprocess> llc_subprocess_;
95 nacl::scoped_ptr<NaClSubprocess> ld_subprocess_;
96 // Used to ensure the subprocesses don't get shutdown more than once.
97 bool llc_subprocess_active_;
98 bool ld_subprocess_active_;
100 // Condition variable to synchronize communication with the SRPC thread.
101 // SRPC thread waits on this condvar if data_buffers_ is empty (meaning
102 // there is no bitcode to send to the translator), and the main thread
103 // appends to data_buffers_ and signals it when it receives bitcode.
104 struct NaClCondVar buffer_cond_;
105 // Mutex for buffer_cond_.
106 struct NaClMutex cond_mu_;
107 // Data buffers from FileDownloader are enqueued here to pass from the
108 // main thread to the SRPC thread. Protected by cond_mu_
109 std::deque<std::vector<char> > data_buffers_;
110 // Whether all data has been downloaded and copied to translation thread.
111 // Associated with buffer_cond_
114 int64_t compile_time_;
116 // Data about the translation files, owned by the coordinator
117 int32_t manifest_id_;
118 const std::vector<TempFile*>* obj_files_;
119 TempFile* nexe_file_;
120 nacl::DescWrapper* invalid_desc_wrapper_;
121 ErrorInfo* coordinator_error_info_;
122 PnaclResources* resources_;
123 PP_PNaClOptions* pnacl_options_;
124 nacl::string architecture_attributes_;
125 PnaclCoordinator* coordinator_;
128 NACL_DISALLOW_COPY_AND_ASSIGN(PnaclTranslateThread);
132 #endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_