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      1 /**************************************************************************
      2  *
      3  * Copyright 2009 VMware, Inc.
      4  * Copyright 2012 Marek Olk <maraeo (at) gmail.com>
      5  * All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the
      9  * "Software"), to deal in the Software without restriction, including
     10  * without limitation the rights to use, copy, modify, merge, publish,
     11  * distribute, sub license, and/or sell copies of the Software, and to
     12  * permit persons to whom the Software is furnished to do so, subject to
     13  * the following conditions:
     14  *
     15  * The above copyright notice and this permission notice (including the
     16  * next paragraph) shall be included in all copies or substantial portions
     17  * of the Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     22  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
     23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     26  *
     27  **************************************************************************/
     28 
     29 /* A simple allocator that suballocates memory from a large buffer. */
     30 
     31 #ifndef U_SUBALLOC
     32 #define U_SUBALLOC
     33 
     34 struct u_suballocator;
     35 
     36 struct u_suballocator *
     37 u_suballocator_create(struct pipe_context *pipe, unsigned size, unsigned bind,
     38                       enum pipe_resource_usage usage,
     39 		      boolean zero_buffer_memory);
     40 
     41 void
     42 u_suballocator_destroy(struct u_suballocator *allocator);
     43 
     44 void
     45 u_suballocator_alloc(struct u_suballocator *allocator, unsigned size,
     46                      unsigned alignment, unsigned *out_offset,
     47                      struct pipe_resource **outbuf);
     48 
     49 #endif
     50