wangchdo commented on code in PR #17489: URL: https://github.com/apache/nuttx/pull/17489#discussion_r2616351941
########## include/nuttx/hrtimer.h: ########## @@ -0,0 +1,170 @@ +/**************************************************************************** + * include/nuttx/hrtimer.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 __INCLUDE_NUTTX_HRTIMER_H +#define __INCLUDE_NUTTX_HRTIMER_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/clock.h> +#include <nuttx/compiler.h> +#include <nuttx/spinlock.h> + +#include <stdint.h> +#include <sys/tree.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Default increment for high-resolution timers if no specific value is set */ + +#define HRTIMER_DEFAULT_INCREMENT ((uint64_t)UINT32_MAX >> 2) + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/* High-resolution timer modes: + * + * HRTIMER_MODE_ABS - Absolute expiration time + * HRTIMER_MODE_REL - Relative timeout from current time + */ + +enum hrtimer_mode +{ + HRTIMER_MODE_ABS = 0x0, /* Absolute expiration time */ + HRTIMER_MODE_REL = 0x1 /* Relative delay from now */ +}; + +/* Forward declarations */ + +struct hrtimer_s; +struct hrtimer_node_s; +typedef struct hrtimer_s hrtimer_t; +typedef struct hrtimer_node_s hrtimer_node_t; + +/* Callback type for high-resolution timer expiration */ + +typedef void (*hrtentry_t)(FAR struct hrtimer_s *); + +/* Red-black tree node for hrtimer */ + +struct hrtimer_node_s +{ + RB_ENTRY(hrtimer_node_s) entry; /* RB-tree linkage for sorted insertion */ +}; + +/* Red-black tree head for managing active hrtimers */ + +RB_HEAD(hrtimer_tree_s, hrtimer_node_s); Review Comment: Done ########## sched/hrtimer/hrtimer.h: ########## @@ -0,0 +1,169 @@ +/**************************************************************************** + * sched/hrtimer/hrtimer.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_HRTIMER_HRTIMER_H +#define __SCHED_HRTIMER_HRTIMER_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/arch.h> +#include <nuttx/clock.h> +#include <nuttx/hrtimer.h> + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/* Spinlock to protect access to the high-resolution timer red-black tree */ + +extern spinlock_t g_hrtspinlock; + +/* Red-Black tree containing all active high-resolution timers */ + +extern struct hrtimer_tree_s g_activetree; + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Name: hrtimer_process + * + * Description: + * Called from the timer interrupt handler to process expired + * high-resolution timers. If a timer has expired, its callback + * function will be executed in the context of the timer interrupt. + * + * Input Parameters: + * now - The current time (nsecs). + * + * Returned Value: + * None + ****************************************************************************/ + +void hrtimer_process(uint64_t now); + +/**************************************************************************** + * Inline Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: hrtimer_gettime + * + * Description: + * Get the current high-resolution time in nanoseconds. + * + * Returned Value: + * Current time in nanoseconds. + ****************************************************************************/ + +static inline_function +uint64_t hrtimer_gettime(void) +{ + struct timespec ts; + + /* Get current time from platform-specific timer */ + + up_timer_gettime(&ts); Review Comment: Done -- This is an automated message from the Apache Git Service. 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