text: //===--- InstrumentsSupport.h - Support for Instruments.app ------ C++ -*--===//
  //
  // This source file is part of the Swift.org open source project
  //
  // Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
  // Licensed under Apache License v2.0 with Runtime Library Exception
  //
  // See http://swift.org/LICENSE.txt for license information
  // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
  //
  //===----------------------------------------------------------------------===//
  //
  // Swift runtime support for instruments.app
  // In the long run, they plan to use dyld to make this indirection go away.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef SWIFT_RUNTIME_INSTRUMENTS_SUPPORT_H
  #define SWIFT_RUNTIME_INSTRUMENTS_SUPPORT_H
  
  namespace swift {
  
  extern "C" HeapObject *(*_swift_allocObject)(HeapMetadata const *metadata,
                                               size_t requiredSize,
                                               size_t requiredAlignmentMask);
  
  extern "C" BoxPair::Return (*_swift_allocBox)(Metadata const *type);
  
  extern "C" void (*_swift_retain)(HeapObject *object);
  extern "C" void (*_swift_retain_n)(HeapObject *object, uint32_t n);
  extern "C" HeapObject *(*_swift_tryRetain)(HeapObject *object);
  extern "C" bool (*_swift_isDeallocating)(HeapObject *object);
  extern "C" void (*_swift_release)(HeapObject *object);
  extern "C" void (*_swift_release_n)(HeapObject *object, uint32_t n);
  
  // liboainject on iOS 8 patches the function pointers below if present. 
  // Do not reuse these names unless you do what oainject expects you to do.
  typedef size_t AllocIndex;
  extern "C" void *(*_swift_alloc)(AllocIndex idx);
  extern "C" void *(*_swift_tryAlloc)(AllocIndex idx);
  extern "C" void *(*_swift_slowAlloc)(size_t bytes, size_t alignMask,
                                       uintptr_t flags);
  extern "C" void (*_swift_dealloc)(void *ptr, AllocIndex idx);
  extern "C" void (*_swift_slowDealloc)(void *ptr, size_t bytes, size_t alignMask);
  extern "C" size_t _swift_indexToSize(AllocIndex idx);
  extern "C" int _swift_sizeToIndex(size_t size);
  extern "C" void _swift_zone_init(void);
  
  };
  
  #endif
  