osdInterrupt.c File Reference

#include <syslog.h>
#include <rtems.h>
#include <rtems/error.h>
#include "errlog.h"
#include "epicsInterrupt.h"
#include "epicsThread.h"

Include dependency graph for osdInterrupt.c:

Go to the source code of this file.

Macros
#define	INTERRUPT_CONTEXT_MESSAGE_QUEUE_COUNT   100

Functions
int	epicsInterruptLock (void)
void	epicsInterruptUnlock (int key)
int	epicsInterruptIsInterruptContext (void)
void	epicsInterruptContextMessage (const char *message)
void	InterruptContextMessageDaemon (void *unused)

Macro Definition Documentation

#define INTERRUPT_CONTEXT_MESSAGE_QUEUE_COUNT   100

Definition at line 21 of file osdInterrupt.c.

Function Documentation

void epicsInterruptContextMessage

(

const char *

message

)

Definition at line 55 of file osdInterrupt.c.

{
    rtems_message_queue_send (interruptContextMessageQueue, &message, sizeof message);
}

int epicsInterruptIsInterruptContext

(

void

)

Definition at line 43 of file osdInterrupt.c.

{
    return rtems_interrupt_is_in_progress ();
}

int epicsInterruptLock

(

void

)

Definition at line 26 of file osdInterrupt.c.

{
    rtems_interrupt_level level;

    rtems_interrupt_disable (level);
    return level;
}

void epicsInterruptUnlock

(

int

key

)

Definition at line 35 of file osdInterrupt.c.

{
    rtems_interrupt_level level = key;

    rtems_interrupt_enable (level);
}

void InterruptContextMessageDaemon

(

void *

unused

)

Definition at line 64 of file osdInterrupt.c.

{
    const char *message;
    size_t size;
    rtems_status_code sc;

    sc = rtems_message_queue_create (rtems_build_name ('I', 'C', 'M', 'Q'),
        INTERRUPT_CONTEXT_MESSAGE_QUEUE_COUNT,
        sizeof message,
        RTEMS_FIFO | RTEMS_LOCAL,
        &interruptContextMessageQueue);
    if (sc != RTEMS_SUCCESSFUL) {
        errlogPrintf ("Can't create interrupt context message queue: %s\n", rtems_status_text (sc));
        epicsThreadSuspendSelf ();
    }
    for (;;) {
        sc = rtems_message_queue_receive (interruptContextMessageQueue,
            &message,
            &size,
            RTEMS_WAIT,
            RTEMS_NO_TIMEOUT);
        if (sc != RTEMS_SUCCESSFUL) {
            errlogPrintf ("Can't receive message from interrupt context: %s\n", rtems_status_text (sc));
            epicsThreadSuspendSelf ();
        }
        if (size == sizeof message)
            syslog (LOG_ERR, "%s", message);
        else
            errlogPrintf ("Received %u-byte message from interrupt context", (unsigned int)size);
    }
}