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| 4349 | Serge | 1 | /* cairo - a vector graphics library with display and print output |
| 2 | * |
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| 3 | * Copyright (C) 2011 Andrea Canciani |
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| 4 | * |
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| 5 | * Permission to use, copy, modify, distribute, and sell this software |
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| 6 | * and its documentation for any purpose is hereby granted without |
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| 7 | * fee, provided that the above copyright notice appear in all copies |
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| 8 | * and that both that copyright notice and this permission notice |
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| 9 | * appear in supporting documentation, and that the name of the |
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| 10 | * copyright holders not be used in advertising or publicity |
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| 11 | * pertaining to distribution of the software without specific, |
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| 12 | * written prior permission. The copyright holders make no |
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| 13 | * representations about the suitability of this software for any |
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| 14 | * purpose. It is provided "as is" without express or implied |
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| 15 | * warranty. |
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| 16 | * |
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| 17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
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| 18 | * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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| 19 | * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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| 20 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 21 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
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| 22 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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| 23 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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| 24 | * SOFTWARE. |
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| 25 | * |
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| 26 | * Authors: Andrea Canciani |
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| 27 | * |
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| 28 | */ |
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| 29 | |||
| 30 | #ifndef CAIRO_TIME_PRIVATE_H |
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| 31 | #define CAIRO_TIME_PRIVATE_H |
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| 32 | |||
| 33 | #include "cairo-compiler-private.h" |
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| 34 | #include "cairo-wideint-private.h" |
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| 35 | |||
| 36 | /* Make the base type signed for easier arithmetic */ |
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| 37 | typedef cairo_int64_t cairo_time_t; |
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| 38 | |||
| 39 | #define _cairo_time_add _cairo_int64_add |
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| 40 | #define _cairo_time_sub _cairo_int64_sub |
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| 41 | #define _cairo_time_gt _cairo_int64_gt |
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| 42 | #define _cairo_time_lt _cairo_int64_lt |
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| 43 | |||
| 44 | #define _cairo_time_to_double _cairo_int64_to_double |
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| 45 | #define _cairo_time_from_double _cairo_double_to_int64 |
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| 46 | |||
| 47 | cairo_private int |
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| 48 | _cairo_time_cmp (const void *a, |
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| 49 | const void *b); |
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| 50 | |||
| 51 | cairo_private double |
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| 52 | _cairo_time_to_s (cairo_time_t t); |
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| 53 | |||
| 54 | cairo_private cairo_time_t |
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| 55 | _cairo_time_from_s (double t); |
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| 56 | |||
| 57 | cairo_private cairo_time_t |
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| 58 | _cairo_time_get (void); |
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| 59 | |||
| 60 | static cairo_always_inline cairo_time_t |
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| 61 | _cairo_time_get_delta (cairo_time_t t) |
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| 62 | { |
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| 63 | cairo_time_t now; |
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| 64 | |||
| 65 | now = _cairo_time_get (); |
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| 66 | |||
| 67 | return _cairo_time_sub (now, t); |
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| 68 | } |
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| 69 | |||
| 70 | static cairo_always_inline double |
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| 71 | _cairo_time_to_ns (cairo_time_t t) |
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| 72 | { |
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| 73 | return 1.e9 * _cairo_time_to_s (t); |
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| 74 | } |
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| 75 | |||
| 76 | static cairo_always_inline cairo_time_t |
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| 77 | _cairo_time_max (cairo_time_t a, cairo_time_t b) |
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| 78 | { |
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| 79 | if (_cairo_int64_gt (a, b)) |
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| 80 | return a; |
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| 81 | else |
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| 82 | return b; |
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| 83 | } |
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| 84 | |||
| 85 | static cairo_always_inline cairo_time_t |
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| 86 | _cairo_time_min (cairo_time_t a, cairo_time_t b) |
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| 87 | { |
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| 88 | if (_cairo_int64_lt (a, b)) |
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| 89 | return a; |
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| 90 | else |
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| 91 | return b; |
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| 92 | } |
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| 93 | |||
| 94 | #endif |