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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. | |
4 | |
5 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_ | |
6 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_ | |
7 | |
8 #include <deque> | |
9 #include <vector> | |
10 | |
11 #include "native_client/src/include/nacl_macros.h" | |
12 #include "native_client/src/include/nacl_scoped_ptr.h" | |
13 #include "native_client/src/shared/platform/nacl_threads.h" | |
14 #include "native_client/src/shared/platform/nacl_sync_checked.h" | |
15 | |
16 #include "ppapi/cpp/completion_callback.h" | |
17 | |
18 #include "ppapi/native_client/src/trusted/plugin/plugin_error.h" | |
19 #include "ppapi/native_client/src/trusted/plugin/service_runtime.h" | |
20 | |
21 struct PP_PNaClOptions; | |
22 | |
23 namespace nacl { | |
24 class DescWrapper; | |
25 } | |
26 | |
27 | |
28 namespace plugin { | |
29 | |
30 class NaClSubprocess; | |
31 class Plugin; | |
32 class PnaclCoordinator; | |
33 class PnaclResources; | |
34 class TempFile; | |
35 | |
36 class PnaclTranslateThread { | |
37 public: | |
38 PnaclTranslateThread(); | |
39 ~PnaclTranslateThread(); | |
40 | |
41 // Start the translation process. It will continue to run and consume data | |
42 // as it is passed in with PutBytes. | |
43 void RunTranslate(const pp::CompletionCallback& finish_callback, | |
44 const std::vector<TempFile*>* obj_files, | |
45 TempFile* nexe_file, | |
46 nacl::DescWrapper* invalid_desc_wrapper, | |
47 ErrorInfo* error_info, | |
48 PnaclResources* resources, | |
49 PP_PNaClOptions* pnacl_options, | |
50 const std::string &architecture_attributes, | |
51 PnaclCoordinator* coordinator, | |
52 Plugin* plugin); | |
53 | |
54 // Kill the llc and/or ld subprocesses. This happens by closing the command | |
55 // channel on the plugin side, which causes the trusted code in the nexe to | |
56 // exit, which will cause any pending SRPCs to error. Because this is called | |
57 // on the main thread, the translation thread must not use the subprocess | |
58 // objects without the lock, other than InvokeSrpcMethod, which does not | |
59 // race with service runtime shutdown. | |
60 void AbortSubprocesses(); | |
61 | |
62 // Send bitcode bytes to the translator. Called from the main thread. | |
63 void PutBytes(const void* data, int count); | |
64 | |
65 // Notify the translator that the end of the bitcode stream has been reached. | |
66 // Called from the main thread. | |
67 void EndStream(); | |
68 | |
69 int64_t GetCompileTime() const { return compile_time_; } | |
70 | |
71 // Returns true if RunTranslate() has been called, false otherwise. | |
72 bool started() const { return plugin_ != NULL; } | |
73 | |
74 private: | |
75 // Helper thread entry point for translation. Takes a pointer to | |
76 // PnaclTranslateThread and calls DoTranslate(). | |
77 static void WINAPI DoTranslateThread(void* arg); | |
78 // Runs the streaming translation. Called from the helper thread. | |
79 void DoTranslate() ; | |
80 // Signal that Pnacl translation failed, from the translation thread only. | |
81 void TranslateFailed(PP_NaClError err_code, | |
82 const std::string& error_string); | |
83 // Run the LD subprocess, returning true on success. | |
84 // On failure, it returns false and runs the callback. | |
85 bool RunLdSubprocess(); | |
86 | |
87 | |
88 // Callback to run when tasks are completed or an error has occurred. | |
89 pp::CompletionCallback report_translate_finished_; | |
90 | |
91 nacl::scoped_ptr<NaClThread> translate_thread_; | |
92 | |
93 // Used to guard llc_subprocess and ld_subprocess | |
94 struct NaClMutex subprocess_mu_; | |
95 nacl::scoped_ptr<NaClSubprocess> llc_subprocess_; | |
96 nacl::scoped_ptr<NaClSubprocess> ld_subprocess_; | |
97 // Used to ensure the subprocesses don't get shutdown more than once. | |
98 bool llc_subprocess_active_; | |
99 bool ld_subprocess_active_; | |
100 | |
101 bool subprocesses_aborted_; | |
102 | |
103 // Condition variable to synchronize communication with the SRPC thread. | |
104 // SRPC thread waits on this condvar if data_buffers_ is empty (meaning | |
105 // there is no bitcode to send to the translator), and the main thread | |
106 // appends to data_buffers_ and signals it when it receives bitcode. | |
107 struct NaClCondVar buffer_cond_; | |
108 // Mutex for buffer_cond_. | |
109 struct NaClMutex cond_mu_; | |
110 // Data buffers from FileDownloader are enqueued here to pass from the | |
111 // main thread to the SRPC thread. Protected by cond_mu_ | |
112 std::deque<std::vector<char> > data_buffers_; | |
113 // Whether all data has been downloaded and copied to translation thread. | |
114 // Associated with buffer_cond_ | |
115 bool done_; | |
116 | |
117 int64_t compile_time_; | |
118 | |
119 // Data about the translation files, owned by the coordinator | |
120 const std::vector<TempFile*>* obj_files_; | |
121 TempFile* nexe_file_; | |
122 nacl::DescWrapper* invalid_desc_wrapper_; | |
123 ErrorInfo* coordinator_error_info_; | |
124 PnaclResources* resources_; | |
125 PP_PNaClOptions* pnacl_options_; | |
126 std::string architecture_attributes_; | |
127 PnaclCoordinator* coordinator_; | |
128 Plugin* plugin_; | |
129 private: | |
130 NACL_DISALLOW_COPY_AND_ASSIGN(PnaclTranslateThread); | |
131 }; | |
132 | |
133 } | |
134 #endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_ | |
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