72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
//===-- asan_stack.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 AddressSanitizer, an address sanity checker.
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//
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// ASan-private header for asan_stack.cpp.
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_STACK_H
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#define ASAN_STACK_H
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#include "asan_flags.h"
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#include "asan_thread.h"
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#include "sanitizer_common/sanitizer_flags.h"
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#include "sanitizer_common/sanitizer_stacktrace.h"
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namespace __asan {
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static const u32 kDefaultMallocContextSize = 30;
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void SetMallocContextSize(u32 size);
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u32 GetMallocContextSize();
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} // namespace __asan
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// NOTE: A Rule of thumb is to retrieve stack trace in the interceptors
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// as early as possible (in functions exposed to the user), as we generally
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// don't want stack trace to contain functions from ASan internals.
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#define GET_STACK_TRACE(max_size, fast) \
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BufferedStackTrace stack; \
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if (max_size <= 2) { \
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stack.size = max_size; \
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if (max_size > 0) { \
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stack.top_frame_bp = GET_CURRENT_FRAME(); \
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stack.trace_buffer[0] = StackTrace::GetCurrentPc(); \
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if (max_size > 1) stack.trace_buffer[1] = GET_CALLER_PC(); \
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} \
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} else { \
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stack.Unwind(StackTrace::GetCurrentPc(), \
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GET_CURRENT_FRAME(), nullptr, fast, max_size); \
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}
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#define GET_STACK_TRACE_FATAL(pc, bp) \
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BufferedStackTrace stack; \
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stack.Unwind(pc, bp, nullptr, \
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common_flags()->fast_unwind_on_fatal)
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#define GET_STACK_TRACE_FATAL_HERE \
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GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal)
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#define GET_STACK_TRACE_THREAD \
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GET_STACK_TRACE(kStackTraceMax, true)
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#define GET_STACK_TRACE_MALLOC \
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GET_STACK_TRACE(GetMallocContextSize(), common_flags()->fast_unwind_on_malloc)
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#define GET_STACK_TRACE_FREE GET_STACK_TRACE_MALLOC
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#define PRINT_CURRENT_STACK() \
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{ \
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GET_STACK_TRACE_FATAL_HERE; \
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stack.Print(); \
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}
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#endif // ASAN_STACK_H
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