bba821b5b1
Summary: Introduce __asan::malloc_context_size atomic that is used to determine required malloc/free stack trace size. It is initialized with common_flags()->malloc_context_size flag, but can later be overwritten at runtime (e.g. when ASan is activated / deactivated). Test Plan: regression test suite Reviewers: kcc, eugenis Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D6645 llvm-svn: 224305
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
//===-- asan_stack.cc -----------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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// Code for ASan stack trace.
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//===----------------------------------------------------------------------===//
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#include "asan_internal.h"
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#include "asan_stack.h"
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#include "sanitizer_common/sanitizer_atomic.h"
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namespace __asan {
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static atomic_uint32_t malloc_context_size;
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void SetMallocContextSize(u32 size) {
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atomic_store(&malloc_context_size, size, memory_order_release);
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}
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u32 GetMallocContextSize() {
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return atomic_load(&malloc_context_size, memory_order_acquire);
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}
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} // namespace __asan
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// ------------------ Interface -------------- {{{1
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extern "C" {
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SANITIZER_INTERFACE_ATTRIBUTE
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void __sanitizer_print_stack_trace() {
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using namespace __asan;
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PRINT_CURRENT_STACK();
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}
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} // extern "C"
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