/**************************************************************************** * sched/clock/clock.h * * SPDX-License-Identifier: Apache-2.0 * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ #ifndef __SCHED_CLOCK_CLOCK_H #define __SCHED_CLOCK_CLOCK_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Configuration ************************************************************/ /* If CONFIG_SYSTEM_TIME64 is selected and the CPU supports long long types, * then a 64-bit system time will be used. */ #ifndef CONFIG_HAVE_LONG_LONG # undef CONFIG_SYSTEM_TIME64 #endif /**************************************************************************** * Public Type Definitions ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ #if !defined(CONFIG_SCHED_TICKLESS) && !defined(__HAVE_KERNEL_GLOBALS) /* The system clock exists (CONFIG_SCHED_TICKLESS), but it not prototyped * globally in include/nuttx/clock.h. */ extern volatile clock_t g_system_ticks; #endif #ifndef CONFIG_CLOCK_TIMEKEEPING extern struct timespec g_basetime; #endif /**************************************************************************** * Public Function Prototypes ****************************************************************************/ int clock_basetime(FAR struct timespec *tp); void clock_initialize(void); #ifndef CONFIG_SCHED_TICKLESS void clock_timer(void); #else # define clock_timer() #endif int clock_abstime2ticks(clockid_t clockid, FAR const struct timespec *abstime, FAR sclock_t *ticks); /**************************************************************************** * perf_init ****************************************************************************/ void perf_init(void); #endif /* __SCHED_CLOCK_CLOCK_H */