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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef prclist_h___ | |
| 7 #define prclist_h___ | |
| 8 | |
| 9 #include "prtypes.h" | |
| 10 | |
| 11 typedef struct PRCListStr PRCList; | |
| 12 | |
| 13 /* | |
| 14 ** Circular linked list | |
| 15 */ | |
| 16 struct PRCListStr { | |
| 17 PRCList *next; | |
| 18 PRCList *prev; | |
| 19 }; | |
| 20 | |
| 21 /* | |
| 22 ** Insert element "_e" into the list, before "_l". | |
| 23 */ | |
| 24 #define PR_INSERT_BEFORE(_e,_l) \ | |
| 25 PR_BEGIN_MACRO \ | |
| 26 (_e)->next = (_l); \ | |
| 27 (_e)->prev = (_l)->prev; \ | |
| 28 (_l)->prev->next = (_e); \ | |
| 29 (_l)->prev = (_e); \ | |
| 30 PR_END_MACRO | |
| 31 | |
| 32 /* | |
| 33 ** Insert element "_e" into the list, after "_l". | |
| 34 */ | |
| 35 #define PR_INSERT_AFTER(_e,_l) \ | |
| 36 PR_BEGIN_MACRO \ | |
| 37 (_e)->next = (_l)->next; \ | |
| 38 (_e)->prev = (_l); \ | |
| 39 (_l)->next->prev = (_e); \ | |
| 40 (_l)->next = (_e); \ | |
| 41 PR_END_MACRO | |
| 42 | |
| 43 /* | |
| 44 ** Return the element following element "_e" | |
| 45 */ | |
| 46 #define PR_NEXT_LINK(_e) \ | |
| 47 ((_e)->next) | |
| 48 /* | |
| 49 ** Return the element preceding element "_e" | |
| 50 */ | |
| 51 #define PR_PREV_LINK(_e) \ | |
| 52 ((_e)->prev) | |
| 53 | |
| 54 /* | |
| 55 ** Append an element "_e" to the end of the list "_l" | |
| 56 */ | |
| 57 #define PR_APPEND_LINK(_e,_l) PR_INSERT_BEFORE(_e,_l) | |
| 58 | |
| 59 /* | |
| 60 ** Insert an element "_e" at the head of the list "_l" | |
| 61 */ | |
| 62 #define PR_INSERT_LINK(_e,_l) PR_INSERT_AFTER(_e,_l) | |
| 63 | |
| 64 /* Return the head/tail of the list */ | |
| 65 #define PR_LIST_HEAD(_l) (_l)->next | |
| 66 #define PR_LIST_TAIL(_l) (_l)->prev | |
| 67 | |
| 68 /* | |
| 69 ** Remove the element "_e" from it's circular list. | |
| 70 */ | |
| 71 #define PR_REMOVE_LINK(_e) \ | |
| 72 PR_BEGIN_MACRO \ | |
| 73 (_e)->prev->next = (_e)->next; \ | |
| 74 (_e)->next->prev = (_e)->prev; \ | |
| 75 PR_END_MACRO | |
| 76 | |
| 77 /* | |
| 78 ** Remove the element "_e" from it's circular list. Also initializes the | |
| 79 ** linkage. | |
| 80 */ | |
| 81 #define PR_REMOVE_AND_INIT_LINK(_e) \ | |
| 82 PR_BEGIN_MACRO \ | |
| 83 (_e)->prev->next = (_e)->next; \ | |
| 84 (_e)->next->prev = (_e)->prev; \ | |
| 85 (_e)->next = (_e); \ | |
| 86 (_e)->prev = (_e); \ | |
| 87 PR_END_MACRO | |
| 88 | |
| 89 /* | |
| 90 ** Return non-zero if the given circular list "_l" is empty, zero if the | |
| 91 ** circular list is not empty | |
| 92 */ | |
| 93 #define PR_CLIST_IS_EMPTY(_l) \ | |
| 94 ((_l)->next == (_l)) | |
| 95 | |
| 96 /* | |
| 97 ** Initialize a circular list | |
| 98 */ | |
| 99 #define PR_INIT_CLIST(_l) \ | |
| 100 PR_BEGIN_MACRO \ | |
| 101 (_l)->next = (_l); \ | |
| 102 (_l)->prev = (_l); \ | |
| 103 PR_END_MACRO | |
| 104 | |
| 105 #define PR_INIT_STATIC_CLIST(_l) \ | |
| 106 {(_l), (_l)} | |
| 107 | |
| 108 #endif /* prclist_h___ */ | |
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Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master