[ASan] Move printing descriptions of heap addresses in error report from allocator internals to asan_report.cc.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@164112 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/asan/asan_allocator.h b/lib/asan/asan_allocator.h
index c5e1aabbb..1c6c30b22 100644
--- a/lib/asan/asan_allocator.h
+++ b/lib/asan/asan_allocator.h
@@ -23,6 +23,26 @@ namespace __asan {
 static const uptr kNumberOfSizeClasses = 255;
 struct AsanChunk;
 
+class AsanChunkView {
+ public:
+  explicit AsanChunkView(AsanChunk *chunk) : chunk_(chunk) {}
+  bool IsValid() { return chunk_ != 0; }
+  uptr Beg();       // first byte of user memory.
+  uptr End();       // last byte of user memory.
+  uptr UsedSize();  // size requested by the user.
+  uptr AllocTid();
+  uptr FreeTid();
+  void GetAllocStack(StackTrace *stack);
+  void GetFreeStack(StackTrace *stack);
+  bool AddrIsInside(uptr addr, uptr access_size, uptr *offset);
+  bool AddrIsAtLeft(uptr addr, uptr access_size, uptr *offset);
+  bool AddrIsAtRight(uptr addr, uptr access_size, uptr *offset);
+ private:
+  AsanChunk *const chunk_;
+};
+
+AsanChunkView FindHeapChunkByAddress(uptr address);
+
 class AsanChunkFifoList {
  public:
   explicit AsanChunkFifoList(LinkerInitialized) { }