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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* | |
| 3 * The contents of this file are subject to the Mozilla Public | |
| 4 * License Version 1.1 (the "License"); you may not use this file | |
| 5 * except in compliance with the License. You may obtain a copy of | |
| 6 * the License at http://www.mozilla.org/MPL/ | |
| 7 * | |
| 8 * Software distributed under the License is distributed on an "AS | |
| 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
| 10 * implied. See the License for the specific language governing | |
| 11 * rights and limitations under the License. | |
| 12 * | |
| 13 * The Original Code is the Netscape Portable Runtime (NSPR). | |
| 14 * | |
| 15 * The Initial Developer of the Original Code is Netscape | |
| 16 * Communications Corporation. Portions created by Netscape are | |
| 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All | |
| 18 * Rights Reserved. | |
| 19 * | |
| 20 * Contributor(s): | |
| 21 * | |
| 22 * Alternatively, the contents of this file may be used under the | |
| 23 * terms of the GNU General Public License Version 2 or later (the | |
| 24 * "GPL"), in which case the provisions of the GPL are applicable | |
| 25 * instead of those above. If you wish to allow use of your | |
| 26 * version of this file only under the terms of the GPL and not to | |
| 27 * allow others to use your version of this file under the MPL, | |
| 28 * indicate your decision by deleting the provisions above and | |
| 29 * replace them with the notice and other provisions required by | |
| 30 * the GPL. If you do not delete the provisions above, a recipient | |
| 31 * may use your version of this file under either the MPL or the | |
| 32 * GPL. | |
| 33 */ | |
| 34 | |
| 35 /* | |
| 36 ** File: prinrval.h | |
| 37 ** Description: API to interval timing functions of NSPR. | |
| 38 ** | |
| 39 ** | |
| 40 ** NSPR provides interval times that are independent of network time | |
| 41 ** of day values. Interval times are (in theory) accurate regardless | |
| 42 ** of host processing requirements and also very cheap to acquire. It | |
| 43 ** is expected that getting an interval time while in a synchronized | |
| 44 ** function (holding one's lock). | |
| 45 **/ | |
| 46 | |
| 47 #if !defined(prinrval_h) | |
| 48 #define prinrval_h | |
| 49 | |
| 50 #include "prtypes.h" | |
| 51 | |
| 52 PR_BEGIN_EXTERN_C | |
| 53 | |
| 54 /**********************************************************************/ | |
| 55 /************************* TYPES AND CONSTANTS ************************/ | |
| 56 /**********************************************************************/ | |
| 57 | |
| 58 typedef PRUint32 PRIntervalTime; | |
| 59 | |
| 60 /*********************************************************************** | |
| 61 ** DEFINES: PR_INTERVAL_MIN | |
| 62 ** PR_INTERVAL_MAX | |
| 63 ** DESCRIPTION: | |
| 64 ** These two constants define the range (in ticks / second) of the | |
| 65 ** platform dependent type, PRIntervalTime. These constants bound both | |
| 66 ** the period and the resolution of a PRIntervalTime. | |
| 67 ***********************************************************************/ | |
| 68 #define PR_INTERVAL_MIN 1000UL | |
| 69 #define PR_INTERVAL_MAX 100000UL | |
| 70 | |
| 71 /*********************************************************************** | |
| 72 ** DEFINES: PR_INTERVAL_NO_WAIT | |
| 73 ** PR_INTERVAL_NO_TIMEOUT | |
| 74 ** DESCRIPTION: | |
| 75 ** Two reserved constants are defined in the PRIntervalTime namespace. | |
| 76 ** They are used to indicate that the process should wait no time (return | |
| 77 ** immediately) or wait forever (never time out), respectively. | |
| 78 ***********************************************************************/ | |
| 79 #define PR_INTERVAL_NO_WAIT 0UL | |
| 80 #define PR_INTERVAL_NO_TIMEOUT 0xffffffffUL | |
| 81 | |
| 82 /**********************************************************************/ | |
| 83 /****************************** FUNCTIONS *****************************/ | |
| 84 /**********************************************************************/ | |
| 85 | |
| 86 /*********************************************************************** | |
| 87 ** FUNCTION: PR_IntervalNow | |
| 88 ** DESCRIPTION: | |
| 89 ** Return the value of NSPR's free running interval timer. That timer | |
| 90 ** can be used to establish epochs and determine intervals (be computing | |
| 91 ** the difference between two times). | |
| 92 ** INPUTS: void | |
| 93 ** OUTPUTS: void | |
| 94 ** RETURN: PRIntervalTime | |
| 95 ** | |
| 96 ** SIDE EFFECTS: | |
| 97 ** None | |
| 98 ** RESTRICTIONS: | |
| 99 ** The units of PRIntervalTime are platform dependent. They are chosen | |
| 100 ** such that they are appropriate for the host OS, yet provide sufficient | |
| 101 ** resolution and period to be useful to clients. | |
| 102 ** MEMORY: N/A | |
| 103 ** ALGORITHM: Platform dependent | |
| 104 ***********************************************************************/ | |
| 105 NSPR_API(PRIntervalTime) PR_IntervalNow(void); | |
| 106 | |
| 107 /*********************************************************************** | |
| 108 ** FUNCTION: PR_TicksPerSecond | |
| 109 ** DESCRIPTION: | |
| 110 ** Return the number of ticks per second for PR_IntervalNow's clock. | |
| 111 ** The value will be in the range [PR_INTERVAL_MIN..PR_INTERVAL_MAX]. | |
| 112 ** INPUTS: void | |
| 113 ** OUTPUTS: void | |
| 114 ** RETURN: PRUint32 | |
| 115 ** | |
| 116 ** SIDE EFFECTS: | |
| 117 ** None | |
| 118 ** RESTRICTIONS: | |
| 119 ** None | |
| 120 ** MEMORY: N/A | |
| 121 ** ALGORITHM: N/A | |
| 122 ***********************************************************************/ | |
| 123 NSPR_API(PRUint32) PR_TicksPerSecond(void); | |
| 124 | |
| 125 /*********************************************************************** | |
| 126 ** FUNCTION: PR_SecondsToInterval | |
| 127 ** PR_MillisecondsToInterval | |
| 128 ** PR_MicrosecondsToInterval | |
| 129 ** DESCRIPTION: | |
| 130 ** Convert standard clock units to platform dependent intervals. | |
| 131 ** INPUTS: PRUint32 | |
| 132 ** OUTPUTS: void | |
| 133 ** RETURN: PRIntervalTime | |
| 134 ** | |
| 135 ** SIDE EFFECTS: | |
| 136 ** None | |
| 137 ** RESTRICTIONS: | |
| 138 ** Conversion may cause overflow, which is not reported. | |
| 139 ** MEMORY: N/A | |
| 140 ** ALGORITHM: N/A | |
| 141 ***********************************************************************/ | |
| 142 NSPR_API(PRIntervalTime) PR_SecondsToInterval(PRUint32 seconds); | |
| 143 NSPR_API(PRIntervalTime) PR_MillisecondsToInterval(PRUint32 milli); | |
| 144 NSPR_API(PRIntervalTime) PR_MicrosecondsToInterval(PRUint32 micro); | |
| 145 | |
| 146 /*********************************************************************** | |
| 147 ** FUNCTION: PR_IntervalToSeconds | |
| 148 ** PR_IntervalToMilliseconds | |
| 149 ** PR_IntervalToMicroseconds | |
| 150 ** DESCRIPTION: | |
| 151 ** Convert platform dependent intervals to standard clock units. | |
| 152 ** INPUTS: PRIntervalTime | |
| 153 ** OUTPUTS: void | |
| 154 ** RETURN: PRUint32 | |
| 155 ** | |
| 156 ** SIDE EFFECTS: | |
| 157 ** None | |
| 158 ** RESTRICTIONS: | |
| 159 ** Conversion may cause overflow, which is not reported. | |
| 160 ** MEMORY: N/A | |
| 161 ** ALGORITHM: N/A | |
| 162 ***********************************************************************/ | |
| 163 NSPR_API(PRUint32) PR_IntervalToSeconds(PRIntervalTime ticks); | |
| 164 NSPR_API(PRUint32) PR_IntervalToMilliseconds(PRIntervalTime ticks); | |
| 165 NSPR_API(PRUint32) PR_IntervalToMicroseconds(PRIntervalTime ticks); | |
| 166 | |
| 167 PR_END_EXTERN_C | |
| 168 | |
| 169 | |
| 170 #endif /* !defined(prinrval_h) */ | |
| 171 | |
| 172 /* prinrval.h */ | |
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Chromium Code Reviews
Issue 665543002:
Remove third_party/npapi/npspy. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master