src/data_internal.h

   1 /*
   2  * Copyright (c) 2009-2011 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_APACHE_LICENSE_HEADER_START@
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  * @APPLE_APACHE_LICENSE_HEADER_END@
  19  */
  20
  21 /*
  22  * IMPORTANT: This header file describes INTERNAL interfaces to libdispatch
  23  * which are subject to change in future releases of Mac OS X. Any applications
  24  * relying on these interfaces WILL break.
  25  */
  26
  27 #ifndef __DISPATCH_DATA_INTERNAL__
  28 #define __DISPATCH_DATA_INTERNAL__
  29
  30 #ifndef __DISPATCH_INDIRECT__
  31 #error "Please #include <dispatch/dispatch.h> instead of this file directly."
  32 #include <dispatch/base.h> // for HeaderDoc
  33 #endif
  34
  35 typedef struct range_record_s {
  36         void* data_object;
  37         size_t from;
  38         size_t length;
  39 } range_record;
  40
  41 DISPATCH_CLASS_DECL(data);
  42 struct dispatch_data_s {
  43         DISPATCH_STRUCT_HEADER(data);
  44 #if DISPATCH_DATA_MOVABLE
  45         unsigned int locked;
  46 #endif
  47         bool leaf;
  48         dispatch_block_t destructor;
  49         size_t size, num_records;
  50         range_record records[];
  51 };
  52
  53 typedef dispatch_data_t (*dispatch_transform_t)(dispatch_data_t data);
  54
  55 struct dispatch_data_format_type_s {
  56         uint64_t type;
  57         uint64_t input_mask;
  58         uint64_t output_mask;
  59         dispatch_transform_t decode;
  60         dispatch_transform_t encode;
  61 };
  62
  63 void _dispatch_data_dispose(dispatch_data_t data);
  64 size_t _dispatch_data_debug(dispatch_data_t data, char* buf, size_t bufsiz);
  65
  66 #endif // __DISPATCH_DATA_INTERNAL__