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102 lines
4.1 KiB
102 lines
4.1 KiB
/******************************************************************************** |
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* timer_internal.h |
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* |
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* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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********************************************************************************/ |
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#ifndef __SCHED_TIMER_INTERNAL_H |
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#define __SCHED_TIMER_INTERNAL_H |
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/******************************************************************************** |
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* Included Files |
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********************************************************************************/ |
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#include <nuttx/config.h> |
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#include <sys/types.h> |
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#include <stdint.h> |
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#include <wdog.h> |
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#include <nuttx/compiler.h> |
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/******************************************************************************** |
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* Definitions |
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********************************************************************************/ |
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#define PT_FLAGS_PREALLOCATED 0x01 /* Timer comes from a pool of preallocated timers */ |
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/******************************************************************************** |
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* Public Types |
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********************************************************************************/ |
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/* This structure represents one POSIX timer */ |
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struct posix_timer_s |
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{ |
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FAR struct posix_timer_s *flink; |
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uint8_t pt_flags; /* See PT_FLAGS_* definitions */ |
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uint8_t pt_crefs; /* Reference count */ |
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uint8_t pt_signo; /* Notification signal */ |
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pid_t pt_owner; /* Creator of timer */ |
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int pt_delay; /* If non-zero, used to reset repetitive timers */ |
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int pt_last; /* Last value used to set watchdog */ |
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WDOG_ID pt_wdog; /* The watchdog that provides the timing */ |
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union sigval pt_value; /* Data passed with notification */ |
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}; |
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/******************************************************************************** |
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* Public Data |
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********************************************************************************/ |
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/* This is a list of free, preallocated timer structures */ |
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#if CONFIG_PREALLOC_TIMERS > 0 |
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extern volatile sq_queue_t g_freetimers; |
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#endif |
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/* This is a list of instantiated timer structures -- active and inactive. The |
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* timers are place on this list by timer_create() and removed from the list by |
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* timer_delete() or when the owning thread exits. |
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*/ |
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extern volatile sq_queue_t g_alloctimers; |
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/******************************************************************************** |
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* Public Function Prototypes |
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********************************************************************************/ |
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void weak_function timer_initialize(void); |
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void weak_function timer_deleteall(pid_t pid); |
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int timer_release(FAR struct posix_timer_s *timer); |
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#endif /* __SCHED_TIMER_INTERNAL_H */
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