diff options
Diffstat (limited to 'source/hal/profiles/native/timer')
-rw-r--r-- | source/hal/profiles/native/timer/include/platform_timer.h | 31 | ||||
-rw-r--r-- | source/hal/profiles/native/timer/platform_timer.c | 110 |
2 files changed, 141 insertions, 0 deletions
diff --git a/source/hal/profiles/native/timer/include/platform_timer.h b/source/hal/profiles/native/timer/include/platform_timer.h new file mode 100644 index 0000000..df7b493 --- /dev/null +++ b/source/hal/profiles/native/timer/include/platform_timer.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2021 Arm Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed 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 TIMER_H +#define TIMER_H + +#include <stdint.h> +#include <time.h> + +/* Container for time struct */ +typedef struct _time_counter { + /* Current POSIX time in secs. */ + time_t current_secs; + /* Nanoseconds expired in current second. */ + time_t current_nsecs; +} time_counter; + +#endif /* TIMER_H */
\ No newline at end of file diff --git a/source/hal/profiles/native/timer/platform_timer.c b/source/hal/profiles/native/timer/platform_timer.c new file mode 100644 index 0000000..c311125 --- /dev/null +++ b/source/hal/profiles/native/timer/platform_timer.c @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2021 Arm Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed 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. + */ +#ifdef __cplusplus +extern "C" { +#endif + +#include "timer.h" + +#include <assert.h> +#include <time.h> +#include <string.h> + +#define MILLISECONDS_IN_SECOND 1000 +#define MICROSECONDS_IN_SECOND 1000000 +#define NANOSECONDS_IN_MILLISECOND 1000000 +#define NANOSECONDS_IN_MICROSECOND 1000 + +/** + * @brief Gets the current time counter value. + * @return Counter value expressed in terms of time_counter struct. + **/ +static time_counter get_time_counter(void) +{ + struct timespec current_time; + clock_gettime(1, ¤t_time); + time_counter t = { + .current_secs = current_time.tv_sec, + .current_nsecs = current_time.tv_nsec + }; + + return t; +} + +/** + * @brief Gets the time duration elapsed between start and end. + * @param[in] start Pointer to time_counter value at start time. + * @param[in] end Pointer to time_counter value at end. + * @return Difference in milliseconds between the arguments expressed + * as unsigned 32 bit integer. + **/ +static time_t get_duration_milliseconds(time_counter *start, time_counter *end) +{ + /* Convert both parts of time struct to ms then add for complete time. */ + time_t seconds_part = + (end->current_secs - start->current_secs) * MILLISECONDS_IN_SECOND; + time_t nanoseconds_part = + (end->current_nsecs - start->current_nsecs) / NANOSECONDS_IN_MILLISECOND; + + return seconds_part + nanoseconds_part; +} + +/** + * @brief Gets the time duration elapsed between start and end. + * @param[in] start Pointer to time_counter value at start time. + * @param[in] end Pointer to time_counter value at end. + * @return Difference in microseconds between the arguments expressed + * as unsigned 32 bit integer. + **/ +static time_t get_duration_microseconds(time_counter *start, time_counter *end) +{ + /* Convert both parts of time struct to us then add for complete time. */ + time_t seconds_part = + (end->current_secs - start->current_secs) * MICROSECONDS_IN_SECOND; + time_t nanoseconds_part = + (end->current_nsecs - start->current_nsecs) / NANOSECONDS_IN_MICROSECOND; + + return seconds_part + nanoseconds_part; +} + +/** + * @brief Stub for timer reset. + **/ +void reset_timer() {} + +/** + * @brief Initialise the timer for this platform. + **/ +void init_timer(platform_timer *timer) +{ + assert(timer); + memset(timer, 0, sizeof(*timer)); + + timer->get_time_counter = get_time_counter; + timer->start_profiling = get_time_counter; + timer->stop_profiling = get_time_counter; + timer->get_duration_ms = get_duration_milliseconds; + timer->cap.duration_ms = 1; + timer->get_duration_us = get_duration_microseconds; + timer->cap.duration_us = 1; + timer->reset = reset_timer; + timer->inited = 1; +} + +#ifdef __cplusplus +} +#endif |