1 /************************************************************************** 2 * 3 * Copyright 2017 Valve Corporation 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #ifndef U_IDALLOC_H 29 #define U_IDALLOC_H 30 31 #include <inttypes.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 struct util_idalloc 38 { 39 uint32_t *data; 40 unsigned num_elements; 41 unsigned lowest_free_idx; 42 }; 43 44 void 45 util_idalloc_init(struct util_idalloc *buf); 46 47 void 48 util_idalloc_fini(struct util_idalloc *buf); 49 50 void 51 util_idalloc_resize(struct util_idalloc *buf, unsigned new_num_elements); 52 53 unsigned 54 util_idalloc_alloc(struct util_idalloc *buf); 55 56 void 57 util_idalloc_free(struct util_idalloc *buf, unsigned id); 58 59 void 60 util_idalloc_reserve(struct util_idalloc *buf, unsigned id); 61 62 #ifdef __cplusplus 63 } 64 #endif 65 66 #endif /* U_IDALLOC_H */ 67