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"
32 class PnaclCoordinator;
37 struct PnaclTimeStats {
38 int64_t pnacl_llc_load_time;
39 int64_t pnacl_compile_time;
40 int64_t pnacl_ld_load_time;
41 int64_t pnacl_link_time;
44 class PnaclTranslateThread {
46 PnaclTranslateThread();
47 ~PnaclTranslateThread();
49 // Start the translation process. It will continue to run and consume data
50 // as it is passed in with PutBytes.
51 void RunTranslate(const pp::CompletionCallback& finish_callback,
52 const Manifest* manifest,
53 const std::vector<TempFile*>* obj_files,
55 nacl::DescWrapper* invalid_desc_wrapper,
56 ErrorInfo* error_info,
57 PnaclResources* resources,
58 PnaclOptions* pnacl_options,
59 PnaclCoordinator* coordinator,
62 // Kill the llc and/or ld subprocesses. This happens by closing the command
63 // channel on the plugin side, which causes the trusted code in the nexe to
64 // exit, which will cause any pending SRPCs to error. Because this is called
65 // on the main thread, the translation thread must not use the subprocess
66 // objects without the lock, other than InvokeSrpcMethod, which does not
67 // race with service runtime shutdown.
68 void AbortSubprocesses();
70 // Send bitcode bytes to the translator. Called from the main thread.
71 void PutBytes(std::vector<char>* data, int count);
73 const PnaclTimeStats& GetTimeStats() const { return time_stats_; }
76 // Starts an individual llc or ld subprocess used for translation.
77 NaClSubprocess* StartSubprocess(const nacl::string& url,
78 const Manifest* manifest,
79 ErrorInfo* error_info);
80 // Helper thread entry point for translation. Takes a pointer to
81 // PnaclTranslateThread and calls DoTranslate().
82 static void WINAPI DoTranslateThread(void* arg);
83 // Runs the streaming translation. Called from the helper thread.
85 // Signal that Pnacl translation failed, from the translation thread only.
86 void TranslateFailed(enum PluginErrorCode err_code,
87 const nacl::string& error_string);
88 // Run the LD subprocess, returning true on success
89 bool RunLdSubprocess(int modules_used,
90 int is_shared_library,
91 const nacl::string& soname,
92 const nacl::string& lib_dependencies);
95 // Callback to run when tasks are completed or an error has occurred.
96 pp::CompletionCallback report_translate_finished_;
98 nacl::scoped_ptr<NaClThread> translate_thread_;
100 // Used to guard llc_subprocess and ld_subprocess
101 struct NaClMutex subprocess_mu_;
102 nacl::scoped_ptr<NaClSubprocess> llc_subprocess_;
103 nacl::scoped_ptr<NaClSubprocess> ld_subprocess_;
104 // Used to ensure the subprocesses don't get shutdown more than once.
105 bool llc_subprocess_active_;
106 bool ld_subprocess_active_;
108 // Condition variable to synchronize communication with the SRPC thread.
109 // SRPC thread waits on this condvar if data_buffers_ is empty (meaning
110 // there is no bitcode to send to the translator), and the main thread
111 // appends to data_buffers_ and signals it when it receives bitcode.
112 struct NaClCondVar buffer_cond_;
113 // Mutex for buffer_cond_.
114 struct NaClMutex cond_mu_;
115 // Data buffers from FileDownloader are enqueued here to pass from the
116 // main thread to the SRPC thread. Protected by cond_mu_
117 std::deque<std::vector<char> > data_buffers_;
118 // Whether all data has been downloaded and copied to translation thread.
119 // Associated with buffer_cond_
122 PnaclTimeStats time_stats_;
124 // Data about the translation files, owned by the coordinator
125 const Manifest* manifest_;
126 const std::vector<TempFile*>* obj_files_;
127 TempFile* nexe_file_;
128 nacl::DescWrapper* invalid_desc_wrapper_;
129 ErrorInfo* coordinator_error_info_;
130 PnaclResources* resources_;
131 PnaclOptions* pnacl_options_;
132 PnaclCoordinator* coordinator_;
135 NACL_DISALLOW_COPY_AND_ASSIGN(PnaclTranslateThread);
139 #endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_TRANSLATE_THREAD_H_