Security/libsecurity_cdsa_utilities/lib/cssmalloc.cpp

   1 /*
   2  * Copyright (c) 2000-2004,2006,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 //
  26 // cssmalloc - memory allocation in the CDSA world.
  27 //
  28 // Don't eat heavily before inspecting this code.
  29 //
  30 #include <security_cdsa_utilities/cssmalloc.h>
  31 #include <stdlib.h>
  32 #include <errno.h>
  33
  34
  35
  36 namespace Security {
  37
  38
  39 //
  40 // CssmMemoryFunctionsAllocators
  41 //
  42 void *CssmMemoryFunctionsAllocator::malloc(size_t size) throw(std::bad_alloc)
  43 { return functions.malloc(size); }
  44
  45 void CssmMemoryFunctionsAllocator::free(void *addr) throw()
  46 { return functions.free(addr); }
  47
  48 void *CssmMemoryFunctionsAllocator::realloc(void *addr, size_t size) throw(std::bad_alloc)
  49 { return functions.realloc(addr, size); }
  50
  51
  52 //
  53 // CssmAllocatorMemoryFunctions
  54 //
  55 CssmAllocatorMemoryFunctions::CssmAllocatorMemoryFunctions(Allocator &alloc)
  56 {
  57         AllocRef = &alloc;
  58         malloc_func = relayMalloc;
  59         free_func = relayFree;
  60         realloc_func = relayRealloc;
  61         calloc_func = relayCalloc;
  62 }
  63
  64 void *CssmAllocatorMemoryFunctions::relayMalloc(size_t size, void *ref) throw(std::bad_alloc)
  65 { return allocator(ref).malloc(size); }
  66
  67 void CssmAllocatorMemoryFunctions::relayFree(void *mem, void *ref) throw()
  68 { allocator(ref).free(mem); }
  69
  70 void *CssmAllocatorMemoryFunctions::relayRealloc(void *mem, size_t size, void *ref) throw(std::bad_alloc)
  71 { return allocator(ref).realloc(mem, size); }
  72
  73 void *CssmAllocatorMemoryFunctions::relayCalloc(uint32 count, size_t size, void *ref) throw(std::bad_alloc)
  74 {
  75         // Allocator doesn't have a calloc() method
  76         void *mem = allocator(ref).malloc(size * count);
  77         memset(mem, 0, size * count);
  78         return mem;
  79 }
  80
  81
  82 //
  83 // CssmVector
  84 //
  85
  86
  87 }   // namespace Security