| /******************************************************************************** |
| * timer_getoverrun.c |
| * |
| * Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <spudmonkey@racsa.co.cr> |
| * |
| * 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. |
| * 3. Neither the name NuttX nor the names of its contributors may be |
| * used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * 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. |
| * |
| ********************************************************************************/ |
| |
| /******************************************************************************** |
| * Included Files |
| ********************************************************************************/ |
| |
| #include <nuttx/config.h> |
| #include <time.h> |
| #include <errno.h> |
| #include "timer_internal.h" |
| |
| #ifndef CONFIG_DISABLE_POSIX_TIMERS |
| |
| /******************************************************************************** |
| * Definitions |
| ********************************************************************************/ |
| |
| /******************************************************************************** |
| * Private Data |
| ********************************************************************************/ |
| |
| /******************************************************************************** |
| * Public Data |
| ********************************************************************************/ |
| |
| /******************************************************************************** |
| * Private Functions |
| ********************************************************************************/ |
| |
| /******************************************************************************** |
| * Public Functions |
| ********************************************************************************/ |
| |
| /******************************************************************************** |
| * Function: timer_getoverrun |
| * |
| * Description: |
| * Only a single signal will be queued to the process for a given timer at any |
| * point in time. When a timer for which a signal is still pending expires, no |
| * signal will be queued, and a timer overrun will occur. When a timer |
| * expiration signal is delivered to or accepted by a process, if the |
| * implementation supports the Realtime Signals Extension, the |
| * timer_getoverrun() function will return the timer expiration overrun count for |
| * the specified timer. The overrun count returned contains the number of extra |
| * timer expirations that occurred between the time the signal was generated |
| * (queued) and when it was delivered or accepted, up to but not including an |
| * implementation-defined maximum of DELAYTIMER_MAX. If the number of such |
| * extra expirations is greater than or equal to DELAYTIMER_MAX, then the |
| * overrun count will be set to DELAYTIMER_MAX. The value returned by |
| * timer_getoverrun() will apply to the most recent expiration signal delivery |
| * or acceptance for the timer. If no expiration signal has been delivered |
| * for the timer, or if the Realtime Signals Extension is not supported, the |
| * return value of timer_getoverrun() is unspecified. |
| * |
| * Parameters: |
| * timerid - The pre-thread timer, previously created by the call to |
| * timer_create(), whose overrun count will be returned.. |
| * |
| * Return Value: |
| * If the timer_getoverrun() function succeeds, it will return the timer |
| * expiration overrun count as explained above. timer_getoverrun() will fail if: |
| * |
| * EINVAL - The timerid argument does not correspond to an ID returned by |
| * timer_create() but not yet deleted by timer_delete(). |
| * |
| * Assumptions: |
| * |
| ********************************************************************************/ |
| |
| int timer_getoverrun(timer_t timerid) |
| { |
| #ifdef CONFIG_CPP_HAVE_WARNING |
| # warning "timer_getoverrun not Implemented" |
| #endif |
| |
| *get_errno_ptr() = ENOSYS; |
| return ERROR; |
| } |
| |
| #endif /* CONFIG_DISABLE_POSIX_TIMERS */ |