diff options
author | sanine <sanine.not@pm.me> | 2022-08-27 23:52:56 -0500 |
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committer | sanine <sanine.not@pm.me> | 2022-08-27 23:52:56 -0500 |
commit | a4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 (patch) | |
tree | 13bd5bfa15e6fea2a12f176bae79adf9c6fd0933 /3rdparty/plibsys/src/ptimeprofiler-mach.c | |
parent | bde3e4f1bb7b8f8abca0884a7d994ee1c17a66b1 (diff) |
add plibsys
Diffstat (limited to '3rdparty/plibsys/src/ptimeprofiler-mach.c')
-rw-r--r-- | 3rdparty/plibsys/src/ptimeprofiler-mach.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/3rdparty/plibsys/src/ptimeprofiler-mach.c b/3rdparty/plibsys/src/ptimeprofiler-mach.c new file mode 100644 index 0000000..6bef3c7 --- /dev/null +++ b/3rdparty/plibsys/src/ptimeprofiler-mach.c @@ -0,0 +1,73 @@ +/* + * The MIT License + * + * Copyright (C) 2013-2016 Alexander Saprykin <saprykin.spb@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * 'Software'), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "ptimeprofiler.h" +#include "ptimeprofiler-private.h" + +#include <mach/mach_time.h> + +static puint64 pp_time_profiler_freq_num = 0; +static puint64 pp_time_profiler_freq_denom = 0; + +puint64 +p_time_profiler_get_ticks_internal () +{ + puint64 val = mach_absolute_time (); + + /* To prevent overflow */ + val /= 1000; + + val *= pp_time_profiler_freq_num; + val /= pp_time_profiler_freq_denom; + + return val; +} + +puint64 +p_time_profiler_elapsed_usecs_internal (const PTimeProfiler *profiler) +{ + return p_time_profiler_get_ticks_internal () - profiler->counter; +} + +void +p_time_profiler_init (void) +{ + mach_timebase_info_data_t tb; + + if (P_UNLIKELY (mach_timebase_info (&tb) != KERN_SUCCESS || tb.denom == 0)) { + P_ERROR ("PTimeProfiler::p_time_profiler_init: mach_timebase_info() failed"); + return; + } + + pp_time_profiler_freq_num = (puint64) tb.numer; + pp_time_profiler_freq_denom = (puint64) tb.denom; +} + +void +p_time_profiler_shutdown (void) +{ + pp_time_profiler_freq_num = 0; + pp_time_profiler_freq_denom = 0; +} |