src/libcompiler_builtins/compiler-rt/lib/msan/msan_allocator.h

   1 //===-- msan_allocator.h ----------------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file is a part of MemorySanitizer.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef MSAN_ALLOCATOR_H
  15 #define MSAN_ALLOCATOR_H
  16
  17 #include "sanitizer_common/sanitizer_common.h"
  18
  19 namespace __msan {
  20
  21 struct MsanThreadLocalMallocStorage {
  22   uptr quarantine_cache[16];
  23   // Allocator cache contains atomic_uint64_t which must be 8-byte aligned.
  24   ALIGNED(8) uptr allocator_cache[96 * (512 * 8 + 16)];  // Opaque.
  25   void CommitBack();
  26
  27  private:
  28   // These objects are allocated via mmap() and are zero-initialized.
  29   MsanThreadLocalMallocStorage() {}
  30 };
  31
  32 } // namespace __msan
  33 #endif // MSAN_ALLOCATOR_H