1 /*- 2 * Copyright (c) 2018 Mindaugas Rasiukevicius <rmind at noxt eu> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef _SYS_THMAP_H_ 28 #define _SYS_THMAP_H_ 29 30 #if !defined(_KERNEL) 31 #error "not supposed to be exposed to userland" 32 #endif 33 34 __BEGIN_DECLS 35 36 struct thmap; 37 typedef struct thmap thmap_t; 38 39 #define THMAP_NOCOPY 0x01 40 #define THMAP_SETROOT 0x02 41 42 typedef struct { 43 uintptr_t (*alloc)(size_t); 44 void (*free)(uintptr_t, size_t); 45 } thmap_ops_t; 46 47 thmap_t * thmap_create(uintptr_t, const thmap_ops_t *, unsigned); 48 void thmap_destroy(thmap_t *); 49 50 void * thmap_get(thmap_t *, const void *, size_t); 51 void * thmap_put(thmap_t *, const void *, size_t, void *); 52 void * thmap_del(thmap_t *, const void *, size_t); 53 54 void * thmap_stage_gc(thmap_t *); 55 void thmap_gc(thmap_t *, void *); 56 57 int thmap_setroot(thmap_t *, uintptr_t); 58 uintptr_t thmap_getroot(const thmap_t *); 59 60 __END_DECLS 61 62 #endif 63