205 lines
6.5 KiB
C
205 lines
6.5 KiB
C
/*
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* Copyright (c) 2015 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* @file
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* @brief Kernel event logger support.
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*/
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#include <misc/event_logger.h>
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#ifndef __KERNEL_EVENT_LOGGER_H__
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#define __KERNEL_EVENT_LOGGER_H__
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#ifdef CONFIG_KERNEL_EVENT_LOGGER
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
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#define KERNEL_EVENT_LOGGER_CONTEXT_SWITCH_EVENT_ID 0x0001
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#endif
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT
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#define KERNEL_EVENT_LOGGER_INTERRUPT_EVENT_ID 0x0002
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#endif
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
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#define KERNEL_EVENT_LOGGER_SLEEP_EVENT_ID 0x0003
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#endif
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/**
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* @brief Kernel Event Logger
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* @defgroup nanokernel_event_logger Kernel Event Logger
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* @{
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*/
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#ifndef _ASMLANGUAGE
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/**
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* Global variable of the ring buffer that allows user to implement
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* their own reading routine.
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*/
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struct event_logger sys_k_event_logger;
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/**
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* @brief Sends a event message to the kernel event logger.
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*
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* @details Sends a event message to the kernel event logger
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* and informs that there are messages available.
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*
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* @param event_id The identification of the event.
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* @param data Pointer to the data of the message.
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* @param data_size Size of the data in 32-bit words.
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*
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* @return No return value.
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*/
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#define sys_k_event_logger_put(event_id, data, data_size) \
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sys_event_logger_put(&sys_k_event_logger, event_id, data, data_size)
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/**
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* @brief Sends a event message to the kernel event logger with the current
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* timestamp.
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*
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* @details Sends a event message to the kernel event logger and informs that
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* there messages available. The timestamp when the event occurred is stored
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* as part of the event message.
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*
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* @param event_id The identification of the event.
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*
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* @return No return value.
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*/
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void sys_k_event_logger_put_timed(uint16_t event_id);
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/**
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* @brief Retrieves a kernel event message.
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*
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* @details Retrieves a kernel event message copying it to the provided
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* buffer. If the buffer is smaller than the message size the function returns
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* an error. The function retrieves messages in FIFO order.
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*
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* @param event_id Pointer to the id of the event fetched
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* @param dropped Pointer to how many events were dropped
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* @param buffer Pointer to the buffer where the message will be copied.
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* @param buffer_size Size of the buffer in 32-bit words.
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*
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* @return -EMSGSIZE if the buffer size is smaller than the message size,
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* the amount of 32-bit words copied or zero if there are no kernel event
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* messages available.
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*/
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#define sys_k_event_logger_get(event_id, dropped, buffer, buffer_size) \
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sys_event_logger_get(&sys_k_event_logger, event_id, dropped, buffer, \
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buffer_size)
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/**
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* @brief Retrieves a kernel event message, wait if there is no message
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* available.
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*
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* @details Retrieves a kernel event message copying it to the provided
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* buffer. If the buffer is smaller than the message size the function returns
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* an error. The function retrieves messages in FIFO order. If there is no
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* kernel event message available the caller pends until a new message is
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* logged.
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*
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* @param event_id Pointer to the id of the event fetched
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* @param dropped Pointer to how many events were dropped
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* @param buffer Pointer to the buffer where the message will be copied.
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* @param buffer_size Size of the buffer in 32-bit words.
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*
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* @return -EMSGSIZE if the buffer size is smaller than the message size, or
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* the amount of 32-bit words copied.
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*/
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#define sys_k_event_logger_get_wait(event_id, dropped, buffer, buffer_size) \
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sys_event_logger_get_wait(&sys_k_event_logger, event_id, dropped, \
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buffer, buffer_size)
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#ifdef CONFIG_NANO_TIMEOUTS
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/**
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* @brief Retrieves a kernel event message, wait with a timeout if there is
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* no profiling event messages available.
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*
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* @details Retrieves a kernel event message copying it to the provided
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* buffer. If the buffer is smaller than the message size the function returns
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* an error. The function retrieves messages in FIFO order. If there are no
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* kernel event messages available the caller pends until a new message is
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* logged or the timeout expires.
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*
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* @param event_id Pointer to the id of the event fetched
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* @param dropped Pointer to how many events were dropped
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* @param buffer Pointer to the buffer where the message will be copied.
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* @param buffer_size Size of the buffer in 32-bit words.
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* @param timeout Timeout in ticks.
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*
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* @return -EMSGSIZE if the buffer size is smaller than the message size, the
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* amount of 32-bit words copied or zero if the timeout expires and the was no
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* message available.
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*/
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#define sys_k_event_logger_get_wait_timeout(event_id, dropped, buffer, buffer_size, \
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timeout) \
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sys_event_logger_get_wait_timeout(event_id, dropped, \
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&sys_k_event_logger, buffer, \
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buffer_size, timeout)
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#endif /* CONFIG_NANO_TIMEOUTS */
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH
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/**
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* @brief Register the fiber that calls the function as collector
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*
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* @details Initialize internal profiling data. This avoid registering
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* the context switch of the collector fiber when
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* CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH is enable.
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*
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* @return No return value.
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*/
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void sys_k_event_logger_register_as_collector(void);
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#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
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void _sys_k_event_logger_enter_sleep(void);
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#else
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static inline void _sys_k_event_logger_enter_sleep(void) {};
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#endif
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#else /* !CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH */
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static inline void sys_k_event_logger_register_as_collector(void) {};
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#endif /* CONFIG_KERNEL_EVENT_LOGGER_CONTEXT_SWITCH */
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#endif /* _ASMLANGUAGE */
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#else /* !CONFIG_KERNEL_EVENT_LOGGER */
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#ifndef _ASMLANGUAGE
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static inline void sys_k_event_logger_put(uint16_t event_id, uint32_t *event_data,
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uint8_t data_size) {};
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static inline void sys_k_event_logger_put_timed(uint16_t event_id) {};
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static inline void _sys_k_event_logger_enter_sleep(void) {};
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#endif /* _ASMLANGUAGE */
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/**
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* @}
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*/
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#endif /* CONFIG_KERNEL_EVENT_LOGGER */
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#endif /* __KERNEL_EVENT_LOGGER_H__ */
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