diff options
Diffstat (limited to 'FreeRTOS-Labs/Demo/FreeRTOS_Plus_POSIX_with_actor_Windows_Simulator/lib/FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_clock.c')
| -rw-r--r-- | FreeRTOS-Labs/Demo/FreeRTOS_Plus_POSIX_with_actor_Windows_Simulator/lib/FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_clock.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/FreeRTOS-Labs/Demo/FreeRTOS_Plus_POSIX_with_actor_Windows_Simulator/lib/FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_clock.c b/FreeRTOS-Labs/Demo/FreeRTOS_Plus_POSIX_with_actor_Windows_Simulator/lib/FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_clock.c new file mode 100644 index 000000000..1c2b803e0 --- /dev/null +++ b/FreeRTOS-Labs/Demo/FreeRTOS_Plus_POSIX_with_actor_Windows_Simulator/lib/FreeRTOS-Plus-POSIX/source/FreeRTOS_POSIX_clock.c @@ -0,0 +1,240 @@ +/*
+ * Amazon FreeRTOS POSIX V1.1.0
+ * Copyright (C) 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://aws.amazon.com/freertos
+ * http://www.FreeRTOS.org
+ */
+
+/**
+ * @file FreeRTOS_POSIX_clock.c
+ * @brief Implementation of clock functions in time.h
+ */
+
+/* C standard library includes. */
+#include <stddef.h>
+#include <string.h>
+
+/* FreeRTOS+POSIX includes. */
+#include "FreeRTOS_POSIX.h"
+#include "FreeRTOS_POSIX/errno.h"
+#include "FreeRTOS_POSIX/time.h"
+#include "FreeRTOS_POSIX/utils.h"
+
+/* Declaration of snprintf. The header stdio.h is not included because it
+ * includes conflicting symbols on some platforms. */
+extern int snprintf( char * s,
+ size_t n,
+ const char * format,
+ ... );
+
+/*-----------------------------------------------------------*/
+
+clock_t clock( void )
+{
+ /* This function is currently unsupported. It will always return -1. */
+
+ return ( clock_t ) -1;
+}
+
+/*-----------------------------------------------------------*/
+
+int clock_getcpuclockid( pid_t pid,
+ clockid_t * clock_id )
+{
+ /* Silence warnings about unused parameters. */
+ ( void ) pid;
+ ( void ) clock_id;
+
+ /* This function is currently unsupported. It will always return EPERM. */
+ return EPERM;
+}
+
+/*-----------------------------------------------------------*/
+
+int clock_getres( clockid_t clock_id,
+ struct timespec * res )
+{
+ /* Silence warnings about unused parameters. */
+ ( void ) clock_id;
+
+ /* Convert FreeRTOS tick resolution as timespec. */
+ if( res != NULL )
+ {
+ res->tv_sec = 0;
+ res->tv_nsec = NANOSECONDS_PER_TICK;
+ }
+
+ return 0;
+}
+
+/*-----------------------------------------------------------*/
+
+int clock_gettime( clockid_t clock_id,
+ struct timespec * tp )
+{
+ TimeOut_t xCurrentTime = { 0 };
+
+ /* Intermediate variable used to convert TimeOut_t to struct timespec.
+ * Also used to detect overflow issues. It must be unsigned because the
+ * behavior of signed integer overflow is undefined. */
+ uint64_t ullTickCount = 0ULL;
+
+ /* Silence warnings about unused parameters. */
+ ( void ) clock_id;
+
+ /* Get the current tick count and overflow count. vTaskSetTimeOutState()
+ * is used to get these values because they are both static in tasks.c. */
+ vTaskSetTimeOutState( &xCurrentTime );
+
+ /* Adjust the tick count for the number of times a TickType_t has overflowed.
+ * portMAX_DELAY should be the maximum value of a TickType_t. */
+ ullTickCount = ( uint64_t ) ( xCurrentTime.xOverflowCount ) << ( sizeof( TickType_t ) * 8 );
+
+ /* Add the current tick count. */
+ ullTickCount += xCurrentTime.xTimeOnEntering;
+
+ /* Convert ullTickCount to timespec. */
+ UTILS_NanosecondsToTimespec( ( int64_t ) ullTickCount * NANOSECONDS_PER_TICK, tp );
+
+ return 0;
+}
+
+/*-----------------------------------------------------------*/
+
+int clock_nanosleep( clockid_t clock_id,
+ int flags,
+ const struct timespec * rqtp,
+ struct timespec * rmtp )
+{
+ int iStatus = 0;
+ TickType_t xSleepTime = 0;
+ struct timespec xCurrentTime = { 0 };
+
+ /* Silence warnings about unused parameters. */
+ ( void ) clock_id;
+ ( void ) rmtp;
+ ( void ) flags; /* This is only ignored if INCLUDE_vTaskDelayUntil is 0. */
+
+ /* Check rqtp. */
+ if( UTILS_ValidateTimespec( rqtp ) == false )
+ {
+ iStatus = EINVAL;
+ }
+
+ /* Get current time */
+ if( ( iStatus == 0 ) && ( clock_gettime( CLOCK_REALTIME, &xCurrentTime ) != 0 ) )
+ {
+ iStatus = EINVAL;
+ }
+
+ if( iStatus == 0 )
+ {
+ /* Check for absolute time sleep. */
+ if( ( flags & TIMER_ABSTIME ) == TIMER_ABSTIME )
+ {
+ /* Get current time */
+ if( clock_gettime( CLOCK_REALTIME, &xCurrentTime ) != 0 )
+ {
+ iStatus = EINVAL;
+ }
+
+ /* Get number of ticks until absolute time. */
+ if( ( iStatus == 0 ) && ( UTILS_AbsoluteTimespecToDeltaTicks( rqtp, &xCurrentTime, &xSleepTime ) == 0 ) )
+ {
+ /* Delay until absolute time if vTaskDelayUntil is available. */
+ #if ( INCLUDE_vTaskDelayUntil == 1 )
+
+ /* Get the current tick count. This variable isn't declared
+ * at the top of the function because it's only used and needed
+ * if vTaskDelayUntil is available. */
+ TickType_t xCurrentTicks = xTaskGetTickCount();
+
+ /* Delay until absolute time. */
+ vTaskDelayUntil( &xCurrentTicks, xSleepTime );
+ #else
+
+ /* If vTaskDelayUntil isn't available, ignore the TIMER_ABSTIME flag
+ * and sleep for a relative time. */
+ vTaskDelay( xSleepTime );
+ #endif
+ }
+ }
+ else
+ {
+ /* If TIMER_ABSTIME isn't specified, convert rqtp to ticks and
+ * sleep for a relative time. */
+ if( UTILS_TimespecToTicks( rqtp, &xSleepTime ) == 0 )
+ {
+ vTaskDelay( xSleepTime );
+ }
+ }
+ }
+
+ return iStatus;
+}
+
+/*-----------------------------------------------------------*/
+
+int clock_settime( clockid_t clock_id,
+ const struct timespec * tp )
+{
+ /* Silence warnings about unused parameters. */
+ ( void ) clock_id;
+ ( void ) tp;
+
+ /* This function is currently unsupported. It will always return -1 and
+ * set errno to EPERM. */
+ errno = EPERM;
+
+ return -1;
+}
+
+/*-----------------------------------------------------------*/
+
+int nanosleep( const struct timespec * rqtp,
+ struct timespec * rmtp )
+{
+ int iStatus = 0;
+ TickType_t xSleepTime = 0;
+
+ /* Silence warnings about unused parameters. */
+ ( void ) rmtp;
+
+ /* Check rqtp. */
+ if( UTILS_ValidateTimespec( rqtp ) == false )
+ {
+ errno = EINVAL;
+ iStatus = -1;
+ }
+
+ if( iStatus == 0 )
+ {
+ /* Convert rqtp to ticks and delay. */
+ if( UTILS_TimespecToTicks( rqtp, &xSleepTime ) == 0 )
+ {
+ vTaskDelay( xSleepTime );
+ }
+ }
+
+ return iStatus;
+}
+
+/*-----------------------------------------------------------*/
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