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- Change QA_alloc to use variable-arguments, allowing for a much more

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extensible interface.
This commit is contained in:
Adam Olsen 2001-09-05 18:23:38 +00:00
parent 7d52c663a3
commit 9ab9764b7a
2 changed files with 42 additions and 20 deletions
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20
include/QF/zone.h
View file

@ -149,19 +149,21 @@ void *Cache_Get (cache_user_t *c);
void *Cache_TryGet (cache_user_t *c);
void Cache_Release (cache_user_t *c);
/* Modes, pick one */
#define QA_NOFAIL 1
#define QA_LATEFAIL 2
#define QA_EARLYFAIL 3
/* Flags */
#define QA_NONE 0
#define QA_FAILURE 1
#define QA_PREVIOUS 2
#define QA_SIZE 4
#define QA_ZEROED 8
#define _QA_MODEMASK 3
/* Flags, OR them with the mode */
#define QA_ZEROED 4
/* Modes used with the QA_FAILURE flag */
#define QA_NOFAIL 1
#define QA_LATEFAIL 2
#define QA_EARLYFAIL 3
extern size_t (*QA_alloc_callback) (size_t size);
void *QA_alloc (void *ptr, size_t size, unsigned modes);
void *QA_alloc (unsigned modes, ...);
void *QA_malloc (size_t size);
void *QA_calloc (size_t nmemb, size_t size);
void *QA_realloc (void *ptr, size_t size);

42
libs/util/zone.c
View file

@ -36,6 +36,7 @@
# include <strings.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#undef MMAPPED_CACHE
@ -1047,30 +1048,49 @@ Cache_Release (cache_user_t *c)
size_t (*QA_alloc_callback) (size_t size);
void *
QA_alloc (void *ptr, size_t size, unsigned modes)
QA_alloc (unsigned flags, ...)
{
void *mem;
void *ptr = 0;
size_t size = 0;
qboolean zeroed = false;
int failure = QA_NOFAIL;
va_list ap;
if (modes & ~(_QA_MODEMASK | QA_ZEROED))
Sys_Error ("QA_alloc: bad modes field: %u\n", modes);
if (flags & ~(QA_FAILURE | QA_PREVIOUS | QA_SIZE | QA_ZEROED))
Sys_Error ("QA_alloc: bad flags: %u\n", flags);
va_start (ap, flags);
if (flags & QA_PREVIOUS)
ptr = va_arg (ap, void *);
if (flags & QA_SIZE)
size = va_arg (ap, size_t);
if (flags & QA_ZEROED)
zeroed = true;
if (flags & QA_FAILURE)
failure = va_arg (ap, int);
va_end (ap);
if (failure != QA_NOFAIL && failure != QA_LATEFAIL && failure != QA_EARLYFAIL)
Sys_Error ("QA_alloc: invalid failure type: %u\n", failure);
if (size) {
do {
if (ptr) {
if (modes & QA_ZEROED)
if (zeroed)
Sys_Error ("QA_alloc: Zeroing reallocated memory not yet supported\n");
else
mem = realloc (ptr, size);
} else {
if (modes & QA_ZEROED)
if (zeroed)
mem = calloc (size, 1);
else
mem = malloc (size);
}
} while ((modes & _QA_MODEMASK) != QA_EARLYFAIL && !mem
} while (failure != QA_EARLYFAIL && !mem
&& QA_alloc_callback && QA_alloc_callback (size));
if (!mem && (modes & _QA_MODEMASK) == QA_NOFAIL)
if (!mem && failure == QA_NOFAIL)
Sys_Error ("QA_alloc: could not allocate %d bytes!\n", size);
return mem;
@ -1085,25 +1105,25 @@ QA_alloc (void *ptr, size_t size, unsigned modes)
void *
QA_malloc (size_t size)
{
return QA_alloc (0, size, QA_NOFAIL);
return QA_alloc (QA_SIZE, size);
}
void *
QA_calloc (size_t nmemb, size_t size)
{
return QA_alloc (0, nmemb * size, QA_NOFAIL | QA_ZEROED);
return QA_alloc (QA_ZEROED | QA_SIZE, nmemb * size);
}
void *
QA_realloc (void *ptr, size_t size)
{
return QA_alloc (ptr, size, QA_NOFAIL);
return QA_alloc (QA_PREVIOUS | QA_SIZE, ptr, size);
}
void
QA_free (void *ptr)
{
QA_alloc (ptr, 0, QA_NOFAIL);
QA_alloc (QA_PREVIOUS, ptr);
}
char *