forked from OSchip/llvm-project
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
//===-- dfsan_thread.h ------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of DataFlowSanitizer.
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//
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//===----------------------------------------------------------------------===//
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#ifndef DFSAN_THREAD_H
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#define DFSAN_THREAD_H
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#include "dfsan_allocator.h"
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_posix.h"
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namespace __dfsan {
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class DFsanThread {
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public:
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// NOTE: There is no DFsanThread constructor. It is allocated
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// via mmap() and *must* be valid in zero-initialized state.
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static DFsanThread *Create(void *start_routine_trampoline,
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thread_callback_t start_routine, void *arg,
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bool track_origins = false);
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static void TSDDtor(void *tsd);
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void Destroy();
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void Init(); // Should be called from the thread itself.
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thread_return_t ThreadStart();
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uptr stack_top();
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uptr stack_bottom();
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uptr tls_begin() { return tls_begin_; }
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uptr tls_end() { return tls_end_; }
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bool IsMainThread() { return start_routine_ == nullptr; }
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bool InSignalHandler() { return in_signal_handler_; }
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void EnterSignalHandler() { in_signal_handler_++; }
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void LeaveSignalHandler() { in_signal_handler_--; }
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DFsanThreadLocalMallocStorage &malloc_storage() { return malloc_storage_; }
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int destructor_iterations_;
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__sanitizer_sigset_t starting_sigset_;
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private:
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void SetThreadStackAndTls();
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void ClearShadowForThreadStackAndTLS();
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struct StackBounds {
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uptr bottom;
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uptr top;
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};
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StackBounds GetStackBounds() const;
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bool AddrIsInStack(uptr addr);
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void *start_routine_trampoline_;
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thread_callback_t start_routine_;
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void *arg_;
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bool track_origins_;
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StackBounds stack_;
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uptr tls_begin_;
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uptr tls_end_;
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unsigned in_signal_handler_;
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DFsanThreadLocalMallocStorage malloc_storage_;
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};
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DFsanThread *GetCurrentThread();
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void SetCurrentThread(DFsanThread *t);
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void DFsanTSDInit(void (*destructor)(void *tsd));
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void DFsanTSDDtor(void *tsd);
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} // namespace __dfsan
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#endif // DFSAN_THREAD_H
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