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/*
* jmemnobs.c (jmemsys.c)
*
* Copyright (C) 1992, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file provides a really simple implementation of the system-
* dependent portion of the JPEG memory manager. This implementation
* assumes that no backing-store files are needed: all required space
* can be obtained from malloc().
* This is very portable in the sense that it'll compile on almost anything,
* but you'd better have lots of main memory (or virtual memory) if you want
* to process big images.
* Note that the max_memory_to_use option is ignored by this implementation.
*/
#include "jinclude.h"
#include "jmemsys.h"
#ifdef INCLUDES_ARE_ANSI
#include <stdlib.h> /* to declare malloc(), free() */
#else
extern void * malloc PP((size_t size));
extern void free PP((void *ptr));
#endif
static external_methods_ptr methods; /* saved for access to error_exit */
/*
* Memory allocation and freeing are controlled by the regular library
* routines malloc() and free().
*/
GLOBAL void *
jget_small (size_t sizeofobject)
{
return (void *) malloc(sizeofobject);
}
GLOBAL void
jfree_small (void * object)
{
free(object);
}
/*
* We assume NEED_FAR_POINTERS is not defined and so the separate entry points
* jget_large, jfree_large are not needed.
*/
/*
* This routine computes the total memory space available for allocation.
* Here we always say, "we got all you want bud!"
*/
GLOBAL long
jmem_available (long min_bytes_needed, long max_bytes_needed)
{
return max_bytes_needed;
}
/*
* Backing store (temporary file) management.
* This should never be called and we just error out.
*/
GLOBAL void
jopen_backing_store (backing_store_ptr info, long total_bytes_needed)
{
ERREXIT(methods, "Backing store not supported");
}
/*
* These routines take care of any system-dependent initialization and
* cleanup required. Keep in mind that jmem_term may be called more than
* once.
*/
GLOBAL void
jmem_init (external_methods_ptr emethods)
{
methods = emethods; /* save struct addr for error exit access */
emethods->max_memory_to_use = 0;
}
GLOBAL void
jmem_term (void)
{
/* no work */
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.