[starvation][concurrency] split guard lock treatment and add support for non-recursive locks (per language)
Reviewed By: jeremydubreil Differential Revision: D13320542 fbshipit-source-id: feb5d58a8master
Nikos Gorogiannis
6 years ago
committed by
Facebook Github Bot
parent
a37d85dddc
commit
27d8a65906
@ -1,2 +1,8 @@
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codetoanalyze/cpp/starvation/basics.cpp, basics::Basic_thread1, 17, DEADLOCK, no_bucket, ERROR, [[Trace 1] `basics::Basic_thread1`,locks `this.mutex_1` in class `basics::Basic*`,locks `this.mutex_2` in class `basics::Basic*`,[Trace 2] `basics::Basic_thread2`,locks `this.mutex_2` in class `basics::Basic*`,locks `this.mutex_1` in class `basics::Basic*`]
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codetoanalyze/cpp/starvation/basics.cpp, basics::Basic_thread1_bad, 18, DEADLOCK, no_bucket, ERROR, [[Trace 1] `basics::Basic_thread1_bad`,locks `this.mutex_1` in class `basics::Basic*`,locks `this.mutex_2` in class `basics::Basic*`,[Trace 2] `basics::Basic_thread2_bad`,locks `this.mutex_2` in class `basics::Basic*`,locks `this.mutex_1` in class `basics::Basic*`]
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codetoanalyze/cpp/starvation/basics.cpp, basics::WithGuard_thread1, 42, DEADLOCK, no_bucket, ERROR, [[Trace 1] `basics::WithGuard_thread1`,locks `this.mutex_1` in class `basics::WithGuard*`,locks `this.mutex_2` in class `basics::WithGuard*`,[Trace 2] `basics::WithGuard_thread2`,locks `this.mutex_2` in class `basics::WithGuard*`,locks `this.mutex_1` in class `basics::WithGuard*`]
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codetoanalyze/cpp/starvation/basics.cpp, basics::SelfDeadlock_complicated_bad, 131, DEADLOCK, no_bucket, ERROR, [In method`basics::SelfDeadlock_complicated_bad`,locks `this.mutex_` in class `basics::SelfDeadlock*`,locks `this.mutex_` in class `basics::SelfDeadlock*`]
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codetoanalyze/cpp/starvation/basics.cpp, basics::SelfDeadlock_interproc1_bad, 114, DEADLOCK, no_bucket, ERROR, [In method`basics::SelfDeadlock_interproc1_bad`,locks `this.mutex_` in class `basics::SelfDeadlock*`,Method call: `basics::SelfDeadlock_interproc2_bad`,locks `this.mutex_` in class `basics::SelfDeadlock*`]
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codetoanalyze/cpp/starvation/basics.cpp, basics::SelfDeadlock_thread_bad, 105, DEADLOCK, no_bucket, ERROR, [In method`basics::SelfDeadlock_thread_bad`,locks `this.mutex_` in class `basics::SelfDeadlock*`,locks `this.mutex_` in class `basics::SelfDeadlock*`]
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codetoanalyze/cpp/starvation/basics.cpp, basics::WithGuard_thread1_bad, 44, DEADLOCK, no_bucket, ERROR, [[Trace 1] `basics::WithGuard_thread1_bad`,locks `this.mutex_1` in class `basics::WithGuard*`,locks `this.mutex_2` in class `basics::WithGuard*`,[Trace 2] `basics::WithGuard_thread2_bad`,locks `this.mutex_2` in class `basics::WithGuard*`,locks `this.mutex_1` in class `basics::WithGuard*`]
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codetoanalyze/cpp/starvation/recursive.cpp, Recursive_FP_multi_ok, 26, DEADLOCK, no_bucket, ERROR, [In method`Recursive_FP_multi_ok`,locks `this.recursive_mutex_` in class `Recursive*`,locks `this.recursive_mutex_` in class `Recursive*`]
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codetoanalyze/cpp/starvation/recursive.cpp, Recursive_FP_path_sensitive_ok, 36, DEADLOCK, no_bucket, ERROR, [In method`Recursive_FP_path_sensitive_ok`,locks `this.mutex_` in class `Recursive*`,locks `this.mutex_` in class `Recursive*`]
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codetoanalyze/cpp/starvation/recursive.cpp, Recursive_FP_unknown_ok, 31, DEADLOCK, no_bucket, ERROR, [In method`Recursive_FP_unknown_ok`,locks `this.umutex_` in class `Recursive*`,locks `this.umutex_` in class `Recursive*`]
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/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <mutex>
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struct UnknownMutex {
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UnknownMutex() {}
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void lock() {}
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void unlock() {}
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UnknownMutex(const UnknownMutex&) = delete;
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UnknownMutex& operator=(const UnknownMutex&) = delete;
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};
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class Recursive {
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public:
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Recursive() {}
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void FP_multi_ok() {
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std::lock_guard<std::recursive_mutex> l(recursive_mutex_);
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{ std::lock_guard<std::recursive_mutex> l(recursive_mutex_); }
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}
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void FP_unknown_ok() {
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std::lock_guard<UnknownMutex> l(umutex_);
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{ std::lock_guard<UnknownMutex> l(umutex_); }
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}
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void FP_path_sensitive_ok() {
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std::lock_guard<std::mutex> l(mutex_);
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bool flag = false;
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if (flag) {
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std::lock_guard<std::mutex> l(mutex_);
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}
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}
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private:
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std::recursive_mutex recursive_mutex_;
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std::mutex mutex_;
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UnknownMutex umutex_;
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};
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