2 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/internal/system/common/time-service.h>
38 const uint64_t NANOSECONDS_PER_SECOND = 1e+9;
41 void GetNanoseconds( uint64_t& timeInNanoseconds )
44 clock_gettime( CLOCK_MONOTONIC, &timeSpec );
46 // Convert all values to uint64_t to match our return type
47 timeInNanoseconds = ( static_cast< uint64_t >( timeSpec.tv_sec ) * NANOSECONDS_PER_SECOND ) + static_cast< uint64_t >( timeSpec.tv_nsec );
50 void SleepUntil( uint64_t timeInNanoseconds )
53 timeSpec.tv_sec = timeInNanoseconds / NANOSECONDS_PER_SECOND;
54 timeSpec.tv_nsec = timeInNanoseconds % NANOSECONDS_PER_SECOND;
56 // clock_nanosleep returns 0 if it sleeps for the period specified, otherwise it returns an error value
57 // If an error value is returned, just sleep again till the absolute time specified
58 while( clock_nanosleep( CLOCK_MONOTONIC, TIMER_ABSTIME, &timeSpec, NULL ) )
63 } // namespace TimeService
65 } // namespace Adaptor
67 } // namespace Internal