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📄 hwasan.cpp(15.25 KB)
📄 hwasan.h(5.69 KB)
📄 hwasan.syms.extra(21 B)
📄 hwasan_allocator.cpp(13.71 KB)
📄 hwasan_allocator.h(3.26 KB)
📄 hwasan_blacklist.txt(282 B)
📄 hwasan_checks.h(4.04 KB)
📄 hwasan_dynamic_shadow.cpp(5.17 KB)
📄 hwasan_dynamic_shadow.h(838 B)
📄 hwasan_exceptions.cpp(2.68 KB)
📄 hwasan_flags.h(799 B)
📄 hwasan_flags.inc(3.27 KB)
📄 hwasan_globals.cpp(3.03 KB)
📄 hwasan_globals.h(1.85 KB)
📄 hwasan_interceptors.cpp(11.1 KB)
📄 hwasan_interceptors_vfork.S(409 B)
📄 hwasan_interface_internal.h(6.32 KB)
📄 hwasan_linux.cpp(15.83 KB)
📄 hwasan_malloc_bisect.h(1.67 KB)
📄 hwasan_mapping.h(2.01 KB)
📄 hwasan_memintrinsics.cpp(1.6 KB)
📄 hwasan_new_delete.cpp(2.29 KB)
📄 hwasan_poisoning.cpp(1.89 KB)
📄 hwasan_poisoning.h(756 B)
📄 hwasan_report.cpp(24.11 KB)
📄 hwasan_report.h(1.2 KB)
📄 hwasan_setjmp.S(2.81 KB)
📄 hwasan_tag_mismatch_aarch64.S(5.89 KB)
📄 hwasan_thread.cpp(3.9 KB)
📄 hwasan_thread.h(2.82 KB)
📄 hwasan_thread_list.cpp(442 B)
📄 hwasan_thread_list.h(6.2 KB)
📄 hwasan_type_test.cpp(918 B)

Editing: hwasan_thread.h

//===-- hwasan_thread.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of HWAddressSanitizer.
//
//===----------------------------------------------------------------------===//

#ifndef HWASAN_THREAD_H
#define HWASAN_THREAD_H

#include "hwasan_allocator.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_ring_buffer.h"

namespace __hwasan {

typedef __sanitizer::CompactRingBuffer<uptr> StackAllocationsRingBuffer;

class Thread {
 public:
  void Init(uptr stack_buffer_start, uptr stack_buffer_size);  // Must be called from the thread itself.
  void InitRandomState();
  void Destroy();

uptr stack_top() { return stack_top_; }
  uptr stack_bottom() { return stack_bottom_; }
  uptr stack_size() { return stack_top() - stack_bottom(); }
  uptr tls_begin() { return tls_begin_; }
  uptr tls_end() { return tls_end_; }
  bool IsMainThread() { return unique_id_ == 0; }

bool AddrIsInStack(uptr addr) {
    return addr >= stack_bottom_ && addr < stack_top_;
  }

AllocatorCache *allocator_cache() { return &allocator_cache_; }
  HeapAllocationsRingBuffer *heap_allocations() { return heap_allocations_; }
  StackAllocationsRingBuffer *stack_allocations() { return stack_allocations_; }

tag_t GenerateRandomTag();

void DisableTagging() { tagging_disabled_++; }
  void EnableTagging() { tagging_disabled_--; }

u64 unique_id() const { return unique_id_; }
  void Announce() {
    if (announced_) return;
    announced_ = true;
    Print("Thread: ");
  }

uptr &vfork_spill() { return vfork_spill_; }

private:
  // NOTE: There is no Thread constructor. It is allocated
  // via mmap() and *must* be valid in zero-initialized state.
  void ClearShadowForThreadStackAndTLS();
  void Print(const char *prefix);
  uptr vfork_spill_;
  uptr stack_top_;
  uptr stack_bottom_;
  uptr tls_begin_;
  uptr tls_end_;

u32 random_state_;
  u32 random_buffer_;

AllocatorCache allocator_cache_;
  HeapAllocationsRingBuffer *heap_allocations_;
  StackAllocationsRingBuffer *stack_allocations_;

Thread *next_;  // All live threads form a linked list.

u64 unique_id_;  // counting from zero.

u32 tagging_disabled_;  // if non-zero, malloc uses zero tag in this thread.

bool announced_;

friend struct ThreadListHead;
};

Thread *GetCurrentThread();
uptr *GetCurrentThreadLongPtr();

struct ScopedTaggingDisabler {
  ScopedTaggingDisabler() { GetCurrentThread()->DisableTagging(); }
  ~ScopedTaggingDisabler() { GetCurrentThread()->EnableTagging(); }
};

} // namespace __hwasan

#endif // HWASAN_THREAD_H

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