cantProceed.c File Reference

#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include "errlog.h"
#include "cantProceed.h"
#include "epicsThread.h"
#include "epicsStackTrace.h"

Include dependency graph for cantProceed.c:

Go to the source code of this file.

Functions
LIBCOM_API void *	callocMustSucceed (size_t count, size_t size, const char *msg)
	A calloc() that never returns NULL. More...
LIBCOM_API void *	mallocMustSucceed (size_t size, const char *msg)
	A malloc() that never returns NULL. More...
LIBCOM_API void	cantProceed (const char *msg,...)

Function Documentation

LIBCOM_API void* callocMustSucceed	(	size_t	count,
		size_t	size,
		const char *	errorMessage
	)

A calloc() that never returns NULL.

Parameters

count	Number of objects.
size	Size of each object.
errorMessage	What this memory is needed for.

Returns

Pointer to zeroed allocated memory.

Definition at line 22 of file cantProceed.c.

{
    void * mem = NULL;
    if (count > 0 && size > 0) {
        while ((mem = calloc(count, size)) == NULL) {
            errlogPrintf("%s: callocMustSucceed(%lu, %lu) - calloc failed\n",
                    msg, (unsigned long)count, (unsigned long)size);
            errlogPrintf("Thread %s (%p) suspending.\n",
                    epicsThreadGetNameSelf(), (void *)epicsThreadGetIdSelf());
            errlogFlush();
            epicsThreadSuspendSelf();
        }
    }
    return mem;
}

LIBCOM_API void cantProceed	(	const char *	msg,
			...
	)

Definition at line 54 of file cantProceed.c.

{
    va_list pvar;
    va_start(pvar, msg);
    if (msg)
        errlogVprintf(msg, pvar);
    va_end(pvar);

    errlogPrintf("Thread %s (%p) can't proceed, suspending.\n",
            epicsThreadGetNameSelf(), (void *)epicsThreadGetIdSelf());

    epicsStackTrace();

    errlogFlush();

    epicsThreadSleep(1.0);
    while (1)
        epicsThreadSuspendSelf();
}

LIBCOM_API void* mallocMustSucceed	(	size_t	size,
		const char *	errorMessage
	)

A malloc() that never returns NULL.

Parameters

size	Size of block to allocate.
errorMessage	What this memory is needed for.

Returns

Pointer to allocated memory.

Definition at line 38 of file cantProceed.c.

{
    void * mem = NULL;
    if (size > 0) {
        while ((mem = malloc(size)) == NULL) {
            errlogPrintf("%s: mallocMustSucceed(%lu) - malloc failed\n",
                msg, (unsigned long)size);
            errlogPrintf("Thread %s (%p) suspending.\n",
                    epicsThreadGetNameSelf(), (void *)epicsThreadGetIdSelf());
            errlogFlush();
            epicsThreadSuspendSelf();
        }
    }
    return mem;
}