4.104.114.84.95
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1 | /* intr.h |
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2 | * |
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3 | * XXX: It is unclear if the type "intr_t" should be defined when |
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4 | * _POSIX_INTERRUPT_CONTROL is not. |
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5 | * |
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6 | * $Id$ |
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7 | */ |
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8 | |
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9 | #ifndef __POSIX_INTERRUPTS_h |
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10 | #define __POSIX_INTERRUPTS_h |
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11 | |
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12 | #include <rtems/posix/features.h> |
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13 | #include <sys/types.h> |
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14 | #include <sys/time.h> |
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15 | |
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16 | #if defined(_POSIX_INTERRUPT_CONTROL) |
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17 | |
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18 | /* |
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19 | * 22.2 Concepts, P1003.4b/D8, p. 73 |
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20 | */ |
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21 | |
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22 | typedef int intr_t; |
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23 | |
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24 | /* |
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25 | * 22.3.1 Associate a User-Written ISR with an Interrupt, P1003.4b/D8, p. 74 |
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26 | */ |
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27 | |
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28 | /* |
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29 | * Return codes from an interrupt handler |
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30 | */ |
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31 | |
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32 | #define INTR_HANDLED_NOTIFY 0 /* ISR handled this interrupt, notify */ |
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33 | /* the thread that registered the */ |
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34 | /* ISR that the interrupt occurred. */ |
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35 | #define INTR_HANDLED_DO_NOT_NOTIFY 1 /* ISR handled this interrupt, but */ |
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36 | /* do NOT perform notification. */ |
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37 | #define INTR_NOT_HANDLED 2 /* ISR did not handle this interrupt, */ |
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38 | /* let the next handler try. */ |
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39 | |
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40 | int intr_capture( |
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41 | intr_t intr, |
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42 | int (*intr_handler)( void *area ), |
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43 | volatile void *area, |
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44 | size_t areasize |
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45 | ); |
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46 | |
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47 | int intr_release( |
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48 | intr_t intr, |
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49 | int (*intr_handler)( void *area ) |
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50 | ); |
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51 | |
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52 | int intr_lock( |
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53 | intr_t intr |
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54 | ); |
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55 | |
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56 | int intr_unlock( |
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57 | intr_t intr |
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58 | ); |
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59 | |
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60 | /* |
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61 | * 22.3.2 Await Interrupt Notification, P1003.4b/D8, p. 76 |
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62 | */ |
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63 | |
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64 | int intr_timed_wait( |
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65 | int flags, |
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66 | const struct timespec *timeout |
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67 | ); |
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68 | |
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69 | #endif |
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70 | |
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71 | #endif |
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72 | /* end of include file */ |
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