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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3770 | Serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2008-2010 VMware, Inc. |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | /** |
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| 29 | * @file |
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| 30 | * OS independent time-manipulation functions. |
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| 31 | * |
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| 32 | * @author Jose Fonseca |
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| 33 | */ |
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| 34 | |||
| 35 | #ifndef _OS_TIME_H_ |
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| 36 | #define _OS_TIME_H_ |
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| 37 | |||
| 38 | |||
| 39 | #include "pipe/p_config.h" |
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| 40 | |||
| 41 | #if defined(PIPE_OS_UNIX) |
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| 42 | # include |
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| 43 | #endif |
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| 44 | |||
| 45 | #include "pipe/p_compiler.h" |
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| 46 | |||
| 47 | |||
| 48 | #ifdef __cplusplus |
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| 49 | extern "C" { |
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| 50 | #endif |
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| 51 | |||
| 52 | |||
| 53 | /* |
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| 54 | * Get the current time in nanoseconds from an unknown base. |
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| 55 | */ |
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| 56 | int64_t |
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| 57 | os_time_get_nano(void); |
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| 58 | |||
| 59 | |||
| 60 | /* |
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| 61 | * Get the current time in microseconds from an unknown base. |
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| 62 | */ |
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| 63 | static INLINE int64_t |
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| 64 | os_time_get(void) { |
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| 65 | return os_time_get_nano() / 1000; |
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| 66 | } |
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| 67 | |||
| 68 | |||
| 69 | /* |
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| 70 | * Sleep. |
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| 71 | */ |
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| 72 | #if defined(PIPE_OS_UNIX) |
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| 73 | #define os_time_sleep(_usecs) usleep(_usecs) |
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| 74 | #else |
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| 75 | void |
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| 76 | os_time_sleep(int64_t usecs); |
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| 77 | #endif |
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| 78 | |||
| 79 | |||
| 80 | /* |
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| 81 | * Helper function for detecting time outs, taking in account overflow. |
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| 82 | * |
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| 83 | * Returns true if the current time has elapsed beyond the specified interval. |
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| 84 | */ |
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| 85 | static INLINE boolean |
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| 86 | os_time_timeout(int64_t start, |
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| 87 | int64_t end, |
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| 88 | int64_t curr) |
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| 89 | { |
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| 90 | if(start <= end) |
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| 91 | return !(start <= curr && curr < end); |
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| 92 | else |
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| 93 | return !((start <= curr) || (curr < end)); |
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| 94 | } |
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| 95 | |||
| 96 | |||
| 97 | #ifdef __cplusplus |
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| 98 | } |
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| 99 | #endif |
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| 100 | |||
| 101 | #endif /* _OS_TIME_H_ */ |