\n
Problems was not only in threads but in algorithm too: start.set(start.get() + 1);
\nShould be start.set(end.get() + 1);
\nThe next thing is that I should set new value to for field start in the beginning and save initial value in thread-local variable.<\/p>\n
\/**\n * Builds map of anagrams\n *\/\nprivate void buildAnagramMap() {\n System.out.println(\"Starting build anagrams map at thread \" + Thread.currentThread().getName());\n if (glossary != null) {\n ExecutorService executorService = Executors.newCachedThreadPool();\n for (int i = 0; i < availableProcessors.get(); i++) {\n executorService.execute(new Runnable() {\n @Override\n public void run() {\n end.set(start.get() + glossary.size() \/ availableProcessors.get());\n int startAt = start.get();\n start.set(end.get() + 1);\n \/\/ if not divisible by number of available processors then we add residue to last thread\n if ((glossary.size() % availableProcessors.get() > 0) &&\n ((glossary.size() - end.get()) < (glossary.size() \/ availableProcessors.get()))) {\n end.set(glossary.size());\n }\n for (int i = startAt; i < end.get(); i++) {\n String key = sortString(glossary.get(i));\n HashSet<String> val = anagrams.get(key);\n if (val == null) {\n val = new HashSet<>();\n anagrams.put(key, val);\n }\n val.add(glossary.get(i));\n }\n }\n });\n }\n executorService.shutdown();\n while (!executorService.isTerminated()) {\n try {\n executorService.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);\n } catch (InterruptedException e) {\n e.printStackTrace();\n }\n }\n } else {\n System.err.println(\"Glossary doesn't exist\");\n }\n}\n\/**\n * Splits glossary on fragments to search\n * @return point to start\n *\/\nprivate synchronized int fragmentation() {\n end.set(start.get() + glossary.size() \/ availableProcessors.get());\n int startAt = start.get();\n start.set(end.get() + 1);\n return startAt;\n}\n<\/code><\/pre>\n<\/p><\/div>\n<\/div>\n<\/div>\n
4<\/span> <\/p><\/div>\n<\/div>\n[ad_2]<\/p>\n
solved What’s wrong in that multithread method? <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Problems was not only in threads but in algorithm too: start.set(start.get() + 1); Should be start.set(end.get() + 1); The next thing is that I should set new value to for field start in the beginning and save initial value in thread-local variable. \/** * Builds map of anagrams *\/ private void buildAnagramMap() { System.out.println(“Starting … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[323,884],"class_list":["post-13253","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java","tag-multithreading"],"yoast_head":"\n[Solved] What's wrong in that multithread method? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-whats-wrong-in-that-multithread-method\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] What's wrong in that multithread method? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Problems was not only in threads but in algorithm too: start.set(start.get() + 1); Should be start.set(end.get() + 1); The next thing is that I should set new value to for field start in the beginning and save initial value in thread-local variable. \/** * Builds map of anagrams *\/ private void buildAnagramMap() { System.out.println("Starting ... 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