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2017-02-23 06:26:44 +08:00
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< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > * This source code is licensed under the CC-by-NC license found in the< / span > < / div >
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< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > // Copyright 2004-present Facebook. All Rights Reserved.< / span > < / div >
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< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #pragma once< / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include < condition_variable> < / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include < future> < / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include < deque> < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include < thread> < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "keyword" > namespace < / span > faiss { < span class = "keyword" > namespace < / span > gpu {< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > < a class = "line" href = "classfaiss_1_1gpu_1_1WorkerThread.html" > 21< / a > < / span >   < span class = "keyword" > class < / span > < a class = "code" href = "classfaiss_1_1gpu_1_1WorkerThread.html" > WorkerThread< / a > {< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > public< / span > :< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < a class = "code" href = "classfaiss_1_1gpu_1_1WorkerThread.html" > WorkerThread< / a > ();< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "comment" > /// Stops and waits for the worker thread to exit, flushing all< / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "comment" > /// pending lambdas< / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > < / span > < a class = "code" href = "classfaiss_1_1gpu_1_1WorkerThread.html#ac1a9c44f38ea5345a650da04b032d41b" > ~WorkerThread< / a > ();< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "comment" > /// Request that the worker thread stop itself< / span > < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1WorkerThread.html#a68963d8c18822d7736c96e82367f2f12" > stop< / a > ();< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "comment" > /// Blocking waits in the current thread for the worker thread to< / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "comment" > /// stop< / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > void< / span > < a class = "code" href = "classfaiss_1_1gpu_1_1WorkerThread.html#aa7fd80a803f543a2027ea74e81db677a" > waitForThreadExit< / a > ();< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "comment" > /// Adds a lambda to run on the worker thread; returns a future that< / span > < / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "comment" > /// can be used to block on its completion.< / span > < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "comment" > /// Future status is `true` if the lambda was run in the worker< / span > < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "comment" > /// thread; `false` if it was not run, because the worker thread is< / span > < / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "comment" > /// exiting or has exited.< / span > < / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < span class = "comment" > < / span > std::future< bool> < a class = "code" href = "classfaiss_1_1gpu_1_1WorkerThread.html#aeddb3e9911373019dbd04b7e8a9762cf" > add< / a > (std::function< < span class = "keywordtype" > void< / span > ()> f);< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "keywordtype" > void< / span > startThread();< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordtype" > void< / span > threadMain();< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keywordtype" > void< / span > threadLoop();< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "comment" > /// Thread that all queued lambdas are run on< / span > < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "comment" > < / span > std::thread thread_;< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "comment" > /// Mutex for the queue and exit status< / span > < / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "comment" > < / span > std::mutex mutex_;< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > /// Monitor for the exit status and the queue< / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > < / span > std::condition_variable monitor_;< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > /// Whether or not we want the thread to exit< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > < / span > < span class = "keywordtype" > bool< / span > wantStop_;< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "comment" > /// Queue of pending lambdas to call< / span > < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "comment" > < / span > std::deque< std::pair< std::function< void()> , std::promise< bool> > > queue_;< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   };< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   } } < span class = "comment" > // namespace< / span > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1WorkerThread_html_a68963d8c18822d7736c96e82367f2f12" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1WorkerThread.html#a68963d8c18822d7736c96e82367f2f12" > faiss::gpu::WorkerThread::stop< / a > < / div > < div class = "ttdeci" > void stop()< / div > < div class = "ttdoc" > Request that the worker thread stop itself. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "WorkerThread_8cpp_source.html#l00036" > WorkerThread.cpp:36< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1WorkerThread_html" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1WorkerThread.html" > faiss::gpu::WorkerThread< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "WorkerThread_8h_source.html#l00021" > WorkerThread.h:21< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1WorkerThread_html_aeddb3e9911373019dbd04b7e8a9762cf" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1WorkerThread.html#aeddb3e9911373019dbd04b7e8a9762cf" > faiss::gpu::WorkerThread::add< / a > < / div > < div class = "ttdeci" > std::future< bool > add(std::function< void()> f)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "WorkerThread_8cpp_source.html#l00044" > WorkerThread.cpp:44< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1WorkerThread_html_aa7fd80a803f543a2027ea74e81db677a" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1WorkerThread.html#aa7fd80a803f543a2027ea74e81db677a" > faiss::gpu::WorkerThread::waitForThreadExit< / a > < / div > < div class = "ttdeci" > void waitForThreadExit()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "WorkerThread_8cpp_source.html#l00107" > WorkerThread.cpp:107< / a > < / div > < / div >
< div class = "ttc" id = "classfaiss_1_1gpu_1_1WorkerThread_html_ac1a9c44f38ea5345a650da04b032d41b" > < div class = "ttname" > < a href = "classfaiss_1_1gpu_1_1WorkerThread.html#ac1a9c44f38ea5345a650da04b032d41b" > faiss::gpu::WorkerThread::~WorkerThread< / a > < / div > < div class = "ttdeci" > ~WorkerThread()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "WorkerThread_8cpp_source.html#l00025" > WorkerThread.cpp:25< / a > < / div > < / div >
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