1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Deletes a POSIX Interval Timer |
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5 | * @ingroup POSIXAPI |
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6 | */ |
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7 | |
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8 | /* |
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9 | * 14.2.3 Delete a Per_process Timer, P1003.1b-1993, p. 266 |
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10 | * |
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11 | * COPYRIGHT (c) 1989-2007. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.org/license/LICENSE. |
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17 | */ |
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18 | |
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19 | #if HAVE_CONFIG_H |
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20 | #include "config.h" |
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21 | #endif |
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22 | |
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23 | #include <time.h> |
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24 | #include <errno.h> |
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25 | #include <pthread.h> |
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26 | |
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27 | #include <rtems/system.h> |
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28 | #include <rtems/seterr.h> |
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29 | #include <rtems/score/thread.h> |
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30 | #include <rtems/score/watchdogimpl.h> |
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31 | #include <rtems/posix/timerimpl.h> |
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32 | |
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33 | |
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34 | int timer_delete( |
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35 | timer_t timerid |
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36 | ) |
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37 | { |
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38 | /* |
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39 | * IDEA: This function must probably stop the timer first and then delete it |
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40 | * |
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41 | * It will have to do a call to rtems_timer_cancel and then another |
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42 | * call to rtems_timer_delete. |
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43 | * The call to rtems_timer_delete will be probably unnecessary, |
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44 | * because rtems_timer_delete stops the timer before deleting it. |
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45 | */ |
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46 | POSIX_Timer_Control *ptimer; |
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47 | ISR_lock_Context lock_context; |
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48 | |
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49 | _Objects_Allocator_lock(); |
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50 | |
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51 | ptimer = _POSIX_Timer_Get( timerid, &lock_context ); |
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52 | if ( ptimer != NULL ) { |
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53 | Per_CPU_Control *cpu; |
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54 | |
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55 | _Objects_Close( &_POSIX_Timer_Information, &ptimer->Object ); |
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56 | cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context ); |
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57 | ptimer->state = POSIX_TIMER_STATE_FREE; |
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58 | _Watchdog_Remove( |
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59 | &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_MONOTONIC ], |
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60 | &ptimer->Timer |
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61 | ); |
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62 | _POSIX_Timer_Release( cpu, &lock_context ); |
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63 | _POSIX_Timer_Free( ptimer ); |
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64 | _Objects_Allocator_unlock(); |
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65 | return 0; |
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66 | } |
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67 | |
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68 | _Objects_Allocator_unlock(); |
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69 | |
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70 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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71 | } |
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