Craig Tiller | fba79f2 | 2015-11-23 11:06:55 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2015, Google Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #ifndef GRPC_SUPPORT_AVL_H |
| 35 | #define GRPC_SUPPORT_AVL_H |
| 36 | |
| 37 | #include <grpc/support/sync.h> |
| 38 | |
| 39 | typedef struct gpr_avl_node { |
| 40 | gpr_refcount refs; |
| 41 | void *key; |
| 42 | void *value; |
| 43 | struct gpr_avl_node *left; |
| 44 | struct gpr_avl_node *right; |
| 45 | long height; |
| 46 | } gpr_avl_node; |
| 47 | |
| 48 | typedef struct gpr_avl_vtable { |
| 49 | void (*destroy_key)(void *key); |
| 50 | void *(*copy_key)(void *key); |
| 51 | long (*compare_keys)(void *key1, void *key2); |
| 52 | void (*destroy_value)(void *value); |
| 53 | void *(*copy_value)(void *value); |
| 54 | } gpr_avl_vtable; |
| 55 | |
| 56 | typedef struct gpr_avl { |
| 57 | const gpr_avl_vtable *vtable; |
| 58 | gpr_avl_node *root; |
| 59 | } gpr_avl; |
| 60 | |
| 61 | gpr_avl gpr_avl_create(const gpr_avl_vtable *vtable); |
| 62 | void gpr_avl_destroy(gpr_avl avl); |
| 63 | gpr_avl gpr_avl_add(gpr_avl avl, void *key, void *value); |
| 64 | gpr_avl gpr_avl_remove(gpr_avl avl, void *key); |
| 65 | void *gpr_avl_get(gpr_avl avl, void *key); |
| 66 | |
| 67 | #endif |