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Kernel.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2017 ARM Limited 00003 * 00004 * Permission is hereby granted, free of charge, to any person obtaining a copy 00005 * of this software and associated documentation files (the "Software"), to deal 00006 * in the Software without restriction, including without limitation the rights 00007 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 * copies of the Software, and to permit persons to whom the Software is 00009 * furnished to do so, subject to the following conditions: 00010 * 00011 * The above copyright notice and this permission notice shall be included in 00012 * all copies or substantial portions of the Software. 00013 * 00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 00020 * SOFTWARE. 00021 */ 00022 #ifndef KERNEL_H 00023 #define KERNEL_H 00024 00025 #include <stdint.h> 00026 00027 namespace rtos { 00028 /** \addtogroup rtos */ 00029 /** @{*/ 00030 00031 /** Functions in the Kernel namespace control RTOS kernel information. */ 00032 namespace Kernel { 00033 00034 /** Read the current RTOS kernel millisecond tick count. 00035 The tick count corresponds to the tick count used by the RTOS for timing 00036 purposes. It increments monotonically from 0 at boot, hence effectively 00037 never wraps. If the underlying RTOS only provides a 32-bit tick count, 00038 this method expands it to 64 bits. 00039 @return RTOS kernel current tick count 00040 @note mbed OS always uses millisecond RTOS ticks, and this could only wrap 00041 after half a billion years 00042 @note You cannot call this function from ISR context. 00043 */ 00044 uint64_t get_ms_count(); 00045 00046 } // namespace Kernel 00047 00048 } // namespace rtos 00049 #endif 00050 00051 /** @}*/
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