rtems: Generate <rtems/rtems/clock.h>

Change license to BSD-2-Clause according to file histories and
documentation re-licensing agreement.

Update #3899.
Update #3993.

1 files changed, 187 insertions, 179 deletions

diff --git a/cpukit/include/rtems/rtems/clock.h b/cpukit/include/rtems/rtems/clock.h
index c3eea7d254..103618adee 100644
--- a/cpukit/include/rtems/rtems/clock.h
+++ b/cpukit/include/rtems/rtems/clock.h
@@ -1,277 +1,285 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /**
  * @file
  *
- * @ingroup ClassicClock
+ * @brief This header file defines the Clock Manager API.
+ */
+
+/*
+ * Copyright (C) 2014, 2020 embedded brains GmbH (http://www.embedded-brains.de)
+ * Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This file is part of the RTEMS quality process and was automatically
+ * generated.  If you find something that needs to be fixed or
+ * worded better please post a report or patch to an RTEMS mailing list
+ * or raise a bug report:
  *
- * This include file contains all the constants and structures associated
- * with the Clock Manager. This manager provides facilities to set, obtain,
- * and continually update the current date and time.
+ * https://docs.rtems.org/branches/master/user/support/bugs.html
  *
- * This manager provides directives to:
+ * For information on updating and regenerating please refer to:
  *
- * - set the current date and time
- * - obtain the current date and time
- * - announce a clock tick
- * - obtain the system uptime
+ * https://docs.rtems.org/branches/master/eng/req/howto.html
  */
 
-/* COPYRIGHT (c) 1989-2013.
- * On-Line Applications Research Corporation (OAR).
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
+/* Generated from spec:/rtems/clock/if/header */
 
 #ifndef _RTEMS_RTEMS_CLOCK_H
 #define _RTEMS_RTEMS_CLOCK_H
 
+#include <stdbool.h>
+#include <stdint.h>
+#include <time.h>
+#include <rtems/config.h>
+#include <sys/_timespec.h>
+#include <sys/_timeval.h>
 #include <rtems/rtems/status.h>
 #include <rtems/rtems/types.h>
-#include <rtems/config.h>
-
-/**
- *  @defgroup ClassicClock Clocks
- *
- *  @ingroup RTEMSAPIClassic
- *
- *  This encapsulates functionality related to the Classic API Clock
- *  Manager.
- */
-/**@{*/
+#include <rtems/score/watchdogticks.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+/* Generated from spec:/rtems/clock/if/group */
+
 /**
- * @brief Obtain Current Time of Day (Classic TOD)
+ * @defgroup RTEMSAPIClassicClock Clock Manager
  *
- * This routine implements the rtems_clock_get_tod directive. It returns
- * the current time of day in the format defined by RTEID.
+ * @ingroup RTEMSAPIClassic
  *
- * Clock Manager - rtems_clock_get_tod
+ * @brief The Clock Manager provides support for time of day and other time
+ *   related capabilities.
+ */
+
+/* Generated from spec:/rtems/clock/if/get-seconds-since-epoch */
+
+/**
+ * @ingroup RTEMSAPIClassicClock
  *
- * @param[in] time_buffer points to the time of day structure
+ * @brief %
  *
- * @retval This method returns RTEMS_SUCCESSFUL if there was not an
- *         error. Otherwise, a status code is returned indicating the
- *         source of the error. If successful, the time_buffer will
- *         be filled in with the current time of day.
+ * @param the_interval %
  */
-rtems_status_code rtems_clock_get_tod(
-  rtems_time_of_day *time_buffer
+rtems_status_code rtems_clock_get_seconds_since_epoch(
+  rtems_interval *the_interval
 );
 
+/* Generated from spec:/rtems/clock/if/get-ticks-per-second-0 */
+
 /**
- * @brief Obtain TOD in struct timeval Format
+ * @ingroup RTEMSAPIClassicClock
  *
- * This routine implements the rtems_clock_get_tod_timeval
- * directive.
+ * @brief Gets the number of clock ticks per second configured for this
+ *   application.
  *
- * @param[in] time points to the struct timeval variable to fill in
+ * The number of clock ticks per second is defined indirectly by the
+ * #CONFIGURE_MICROSECONDS_PER_TICK configuration option.
  *
- * @retval This method returns RTEMS_SUCCESSFUL if there was not an
- *         error. Otherwise, a status code is returned indicating the
- *         source of the error. If successful, the time will
- *         be filled in with the current time of day.
+ * @return Returns the number of clock ticks per second configured for this
+ *   application.
  */
-rtems_status_code rtems_clock_get_tod_timeval(
-  struct timeval *time
-);
+rtems_interval rtems_clock_get_ticks_per_second( void );
+
+/* Generated from spec:/rtems/clock/if/get-ticks-per-second-1 */
 
 /**
- * @brief Obtain Seconds Since Epoch
+ * @brief Gets the number of clock ticks per second configured for this
+ *   application.
  *
- * This routine implements the rtems_clock_get_seconds_since_epoch
- * directive.
+ * The number of clock ticks per second is defined indirectly by the
+ * #CONFIGURE_MICROSECONDS_PER_TICK configuration option.
  *
- * @param[in] the_interval points to the interval variable to fill in
+ * This macro is an optimized variant for C/C++ without a function call
+ * overhead.
  *
- * @retval This method returns RTEMS_SUCCESSFUL if there was not an
- *         error. Otherwise, a status code is returned indicating the
- *         source of the error. If successful, the time_buffer will
- *         be filled in with the current time of day.
+ * @return Returns the number of clock ticks per second configured for this
+ *   application.
  */
-rtems_status_code rtems_clock_get_seconds_since_epoch(
-  rtems_interval *the_interval
-);
+#define rtems_clock_get_ticks_per_second() _Watchdog_Ticks_per_second
+
+/* Generated from spec:/rtems/clock/if/get-ticks-since-boot */
 
 /**
- * @brief Gets the current ticks counter value.
+ * @ingroup RTEMSAPIClassicClock
  *
- * @return The current tick counter value.  With a 1ms clock tick, this counter
- * overflows after 50 days since boot.
+ * @brief %
  */
-RTEMS_INLINE_ROUTINE rtems_interval rtems_clock_get_ticks_since_boot(void)
-{
-  return _Watchdog_Ticks_since_boot;
-}
+#define rtems_clock_get_ticks_since_boot() _Watchdog_Ticks_since_boot
+
+/* Generated from spec:/rtems/clock/if/get-tod */
 
 /**
- * @brief Returns the ticks counter value delta ticks in the future.
+ * @ingroup RTEMSAPIClassicClock
  *
- * @param[in] delta The ticks delta value.
+ * @brief %
  *
- * @return The tick counter value delta ticks in the future.
+ * @param time_buffer %
  */
-RTEMS_INLINE_ROUTINE rtems_interval rtems_clock_tick_later(
-  rtems_interval delta
-)
-{
-  return _Watchdog_Ticks_since_boot + delta;
-}
+rtems_status_code rtems_clock_get_tod( rtems_time_of_day *time_buffer );
+
+/* Generated from spec:/rtems/clock/if/get-tod-timeval */
 
 /**
- * @brief Returns the ticks counter value at least delta microseconds in the
- * future.
+ * @ingroup RTEMSAPIClassicClock
  *
- * @param[in] delta_in_usec The delta value in microseconds.
+ * @brief %
  *
- * @return The tick counter value at least delta microseconds in the future.
+ * @param time %
  */
-RTEMS_INLINE_ROUTINE rtems_interval rtems_clock_tick_later_usec(
-  rtems_interval delta_in_usec
-)
-{
-  rtems_interval us_per_tick = rtems_configuration_get_microseconds_per_tick();
+rtems_status_code rtems_clock_get_tod_timeval( struct timeval *time );
 
-  /*
-   * Add one additional tick, since we don't know the time to the clock next
-   * tick.
-   */
-  return _Watchdog_Ticks_since_boot
-    + (delta_in_usec + us_per_tick - 1) / us_per_tick + 1;
-}
+/* Generated from spec:/rtems/clock/if/get-uptime */
 
 /**
- * @brief Returns true if the current ticks counter value indicates a time
- * before the time specified by the tick value and false otherwise.
- *
- * @param[in] tick The tick value.
- *
- * This can be used to write busy loops with a timeout.
+ * @ingroup RTEMSAPIClassicClock
  *
- * @code
- * status busy( void )
- * {
- *   rtems_interval timeout = rtems_clock_tick_later_usec( 10000 );
+ * @brief %
  *
- *   do {
- *     if ( ok() ) {
- *       return success;
- *     }
- *   } while ( rtems_clock_tick_before( timeout ) );
- *
- *   return timeout;
- * }
- * @endcode
- *
- * @retval true The current ticks counter value indicates a time before the
- * time specified by the tick value.
- * @retval false Otherwise.
+ * @param uptime %
  */
-RTEMS_INLINE_ROUTINE bool rtems_clock_tick_before(
-  rtems_interval tick
-)
-{
-  return (int32_t) ( tick - _Watchdog_Ticks_since_boot ) > 0;
-}
+rtems_status_code rtems_clock_get_uptime( struct timespec *uptime );
+
+/* Generated from spec:/rtems/clock/if/get-uptime-nanoseconds */
 
 /**
- * @brief Obtain Ticks Per Seconds
- *
- * This routine implements the rtems_clock_get_ticks_per_second
- * directive.
+ * @ingroup RTEMSAPIClassicClock
  *
- * @retval This method returns the number of ticks per second. It cannot
- *         fail since RTEMS is always configured to know the number of
- *         ticks per second.
+ * @brief %
  */
-rtems_interval rtems_clock_get_ticks_per_second(void);
+uint64_t rtems_clock_get_uptime_nanoseconds( void );
 
-/* Optimized variant for C/C++ without function call overhead */
-#define rtems_clock_get_ticks_per_second() ( _Watchdog_Ticks_per_second )
+/* Generated from spec:/rtems/clock/if/get-uptime-seconds */
 
 /**
- * @brief Set the Current TOD
- *
- * This routine implements the rtems_clock_set directive. It sets
- * the current time of day to that in the time_buffer record.
+ * @ingroup RTEMSAPIClassicClock
  *
- * @param[in] time_buffer points to the new TOD
+ * @brief %
+ */
+time_t rtems_clock_get_uptime_seconds( void );
+
+/* Generated from spec:/rtems/clock/if/get-uptime-timeval */
+
+/**
+ * @ingroup RTEMSAPIClassicClock
  *
- * @retval This method returns RTEMS_SUCCESSFUL if there was not an
- *         error. Otherwise, a status code is returned indicating the
- *         source of the error.
+ * @brief %
  *
- * @note Activities scheduled based upon the current time of day
- *       may be executed immediately if the time is moved forward.
+ * @param uptime %
  */
-rtems_status_code rtems_clock_set(
-  const rtems_time_of_day *time_buffer
-);
+void rtems_clock_get_uptime_timeval( struct timeval *uptime );
+
+/* Generated from spec:/rtems/clock/if/set */
 
 /**
- * @brief Announce a Clock Tick
+ * @ingroup RTEMSAPIClassicClock
  *
- * This routine implements the rtems_clock_tick directive. It is invoked
- * to inform RTEMS of the occurrence of a clock tick.
+ * @brief %
  *
- * @retval This directive always returns RTEMS_SUCCESSFUL.
+ * @param time_buffer %
+ */
+rtems_status_code rtems_clock_set( const rtems_time_of_day *time_buffer );
+
+/* Generated from spec:/rtems/clock/if/tick */
+
+/**
+ * @ingroup RTEMSAPIClassicClock
  *
- * @note This method is typically called from an ISR and is the basis
- *       for all timeouts and delays. This routine only works for leap-years
- *       through 2099.
+ * @brief %
  */
 rtems_status_code rtems_clock_tick( void );
 
+/* Generated from spec:/rtems/clock/if/tick-before */
+
 /**
- * @brief Obtain the System Uptime
+ * @ingroup RTEMSAPIClassicClock
  *
- * This directive returns the system uptime.
+ * @brief Returns true if the current ticks counter value indicates a time
+ *   before the time specified by the tick value and false otherwise.
  *
- * @param[in] uptime is a pointer to the time structure
+ * This directive can be used to write busy loops with a timeout.
  *
- * @retval This method returns RTEMS_SUCCESSFUL if there was not an
- *         error. Otherwise, a status code is returned indicating the
- *         source of the error. If successful, the @a uptime will be
- *         filled in.
+ * @param tick is the tick value.
+ *
+ * @retval true The current ticks counter value indicates a time before the
+ *   time specified by the tick value.
+ *
+ * @retval false Otherwise.
  */
-rtems_status_code rtems_clock_get_uptime(
-  struct timespec *uptime
-);
+static inline bool rtems_clock_tick_before( rtems_interval tick )
+{
+  return (int32_t) ( tick - _Watchdog_Ticks_since_boot ) > 0;
+}
+
+/* Generated from spec:/rtems/clock/if/tick-later */
 
 /**
- * @brief Gets the System Uptime in the Struct Timeval Format
+ * @ingroup RTEMSAPIClassicClock
  *
- * @param[out] uptime is a pointer to a struct timeval structure.
+ * @brief Returns the ticks counter value delta ticks in the future.
  *
- * @retval This methods returns the system uptime.
+ * @param delta is the ticks delta value.
  *
- * @note Pointer must not be NULL.
+ * @return The tick counter value delta ticks in the future is returned.
  */
-void rtems_clock_get_uptime_timeval( struct timeval *uptime );
+static inline rtems_interval rtems_clock_tick_later( rtems_interval delta )
+{
+  return _Watchdog_Ticks_since_boot + delta;
+}
 
-/**
- * @brief Returns the system uptime in seconds.
- *
- * @retval The system uptime in seconds.
- */
-time_t rtems_clock_get_uptime_seconds( void );
+/* Generated from spec:/rtems/clock/if/tick-later-usec */
 
 /**
- * @brief Returns the system uptime in nanoseconds.
+ * @ingroup RTEMSAPIClassicClock
+ *
+ * @brief Returns the ticks counter value at least delta microseconds in the
+ *   future.
+ *
+ * @param delta_in_usec is the delta value in microseconds.
  *
- * @retval The system uptime in nanoseconds.
+ * @return The tick counter value delta ticks in the future is returned.
  */
-uint64_t rtems_clock_get_uptime_nanoseconds( void );
+static inline rtems_interval rtems_clock_tick_later_usec(
+  rtems_interval delta_in_usec
+)
+{
+  rtems_interval us_per_tick;
+
+  us_per_tick = rtems_configuration_get_microseconds_per_tick();
+
+  /*
+   * Add one additional tick, since we do not know the time to the clock
+   * next tick.
+   */
+  return _Watchdog_Ticks_since_boot + 1
+    + ( delta_in_usec + us_per_tick - 1 ) / us_per_tick;
+}
 
 #ifdef __cplusplus
 }
 #endif
 
-/**@}*/
-
-#endif
-/* end of include file */
+#endif /* _RTEMS_RTEMS_CLOCK_H */