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sched/clock/clock.c: Correct a comment as noted in Issue 175.

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Gregory Nutt
2019-10-17 12:24:19 -06:00
parent 1f46e294a3
commit f063d7f386
1 changed files with 6 additions and 2 deletions
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sched/clock/clock.c
+6 -2
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@@ -1,7 +1,7 @@
/**************************************************************************** /****************************************************************************
* sched/clock/clock.c * sched/clock/clock.c
* *
* Copyright (C) 2015, 2018 Gregory Nutt. All rights reserved. * Copyright (C) 2015, 2018-2019 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org> * Author: Gregory Nutt <gnutt@nuttx.org>
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@@ -58,11 +58,15 @@
* To determine the time in seconds, the value returned by clock() should * To determine the time in seconds, the value returned by clock() should
* be divided by the value of the macro CLOCKS_PER_SEC as defined in <time.h>. * be divided by the value of the macro CLOCKS_PER_SEC as defined in <time.h>.
* *
* NOTE: The current implementation does NOT return the processor time
* used by the process. NuttX currently does not keep any record of
* processing time. Instead the elapsed time since power up is returned.
*
* Input Parameters: * Input Parameters:
* None * None
* *
* Returned Value: * Returned Value:
* The system time in units of clock ticks is returend. If the processor * The system time in units of clock ticks is returned. If the processor
* time used is not available or its value cannot be represented, the * time used is not available or its value cannot be represented, the
* function will return the value (clock_t)-1. * function will return the value (clock_t)-1.
* *