| 1 | //=-- lsan_thread.h -------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file is a part of LeakSanitizer. |
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| 10 | // Thread registry for standalone LSan. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #ifndef LSAN_THREAD_H |
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| 15 | #define LSAN_THREAD_H |
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| 16 | |
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| 17 | #include "sanitizer_common/sanitizer_thread_arg_retval.h" |
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| 18 | #include "sanitizer_common/sanitizer_thread_registry.h" |
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| 19 | |
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| 20 | namespace __lsan { |
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| 21 | |
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| 22 | class ThreadContextLsanBase : public ThreadContextBase { |
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| 23 | public: |
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| 24 | explicit ThreadContextLsanBase(int tid); |
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| 25 | void OnStarted(void *arg) override; |
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| 26 | void OnFinished() override; |
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| 27 | uptr stack_begin() { return stack_begin_; } |
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| 28 | uptr stack_end() { return stack_end_; } |
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| 29 | uptr cache_begin() { return cache_begin_; } |
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| 30 | uptr cache_end() { return cache_end_; } |
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| 31 | |
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| 32 | // The argument is passed on to the subclass's OnStarted member function. |
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| 33 | static void ThreadStart(u32 tid, tid_t os_id, ThreadType thread_type, |
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| 34 | void *onstarted_arg); |
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| 35 | |
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| 36 | protected: |
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| 37 | ~ThreadContextLsanBase() {} |
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| 38 | uptr stack_begin_ = 0; |
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| 39 | uptr stack_end_ = 0; |
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| 40 | uptr cache_begin_ = 0; |
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| 41 | uptr cache_end_ = 0; |
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| 42 | }; |
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| 43 | |
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| 44 | // This subclass of ThreadContextLsanBase is declared in an OS-specific header. |
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| 45 | class ThreadContext; |
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| 46 | |
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| 47 | void InitializeThreads(); |
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| 48 | void InitializeMainThread(); |
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| 49 | |
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| 50 | ThreadRegistry *GetLsanThreadRegistryLocked(); |
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| 51 | ThreadArgRetval &GetThreadArgRetval(); |
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| 52 | |
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| 53 | u32 ThreadCreate(u32 tid, bool detached, void *arg = nullptr); |
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| 54 | void ThreadFinish(); |
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| 55 | |
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| 56 | ThreadContextLsanBase *GetCurrentThread(); |
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| 57 | inline u32 GetCurrentThreadId() { |
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| 58 | ThreadContextLsanBase *ctx = GetCurrentThread(); |
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| 59 | return ctx ? ctx->tid : kInvalidTid; |
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| 60 | } |
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| 61 | void SetCurrentThread(ThreadContextLsanBase *tctx); |
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| 62 | void EnsureMainThreadIDIsCorrect(); |
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| 63 | |
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| 64 | } // namespace __lsan |
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| 65 | |
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| 66 | #endif // LSAN_THREAD_H |
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| 67 | |
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