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comparison compiler-rt/lib/gwp_asan/common.h @ 207:2e18cbf3894f

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LLVM12
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 08 Jun 2021 06:07:14 +0900
parents 1d019706d866
children c4bab56944e8
comparison
equal deleted inserted replaced
173:0572611fdcc8 207:2e18cbf3894f
47 // actual number of collected frames may be less than this as the stack 47 // actual number of collected frames may be less than this as the stack
48 // frames are compressed into a fixed memory range. 48 // frames are compressed into a fixed memory range.
49 static constexpr size_t kMaxTraceLengthToCollect = 128; 49 static constexpr size_t kMaxTraceLengthToCollect = 128;
50 50
51 // Records the given allocation metadata into this struct. 51 // Records the given allocation metadata into this struct.
52 void RecordAllocation(uintptr_t Addr, size_t Size); 52 void RecordAllocation(uintptr_t Addr, size_t RequestedSize);
53 // Record that this allocation is now deallocated. 53 // Record that this allocation is now deallocated.
54 void RecordDeallocation(); 54 void RecordDeallocation();
55 55
56 struct CallSiteInfo { 56 struct CallSiteInfo {
57 // Record the current backtrace to this callsite. 57 // Record the current backtrace to this callsite.
68 68
69 // The address of this allocation. If zero, the rest of this struct isn't 69 // The address of this allocation. If zero, the rest of this struct isn't
70 // valid, as the allocation has never occurred. 70 // valid, as the allocation has never occurred.
71 uintptr_t Addr = 0; 71 uintptr_t Addr = 0;
72 // Represents the actual size of the allocation. 72 // Represents the actual size of the allocation.
73 size_t Size = 0; 73 size_t RequestedSize = 0;
74 74
75 CallSiteInfo AllocationTrace; 75 CallSiteInfo AllocationTrace;
76 CallSiteInfo DeallocationTrace; 76 CallSiteInfo DeallocationTrace;
77 77
78 // Whether this allocation has been deallocated yet. 78 // Whether this allocation has been deallocated yet.
81 81
82 // This holds the state that's shared between the GWP-ASan allocator and the 82 // This holds the state that's shared between the GWP-ASan allocator and the
83 // crash handler. This, in conjunction with the Metadata array, forms the entire 83 // crash handler. This, in conjunction with the Metadata array, forms the entire
84 // set of information required for understanding a GWP-ASan crash. 84 // set of information required for understanding a GWP-ASan crash.
85 struct AllocatorState { 85 struct AllocatorState {
86 constexpr AllocatorState() {}
87
86 // Returns whether the provided pointer is a current sampled allocation that 88 // Returns whether the provided pointer is a current sampled allocation that
87 // is owned by this pool. 89 // is owned by this pool.
88 GWP_ASAN_ALWAYS_INLINE bool pointerIsMine(const void *Ptr) const { 90 GWP_ASAN_ALWAYS_INLINE bool pointerIsMine(const void *Ptr) const {
89 uintptr_t P = reinterpret_cast<uintptr_t>(Ptr); 91 uintptr_t P = reinterpret_cast<uintptr_t>(Ptr);
90 return P < GuardedPagePoolEnd && GuardedPagePool <= P; 92 return P < GuardedPagePoolEnd && GuardedPagePool <= P;