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The USE_CACHE_ALIGNING define now has a value: the number of *words* 

in a cacheline.
This commit is contained in:
Jack Jansen 1997-02-03 15:06:45 +00:00
parent af310c1d00
commit 3c2871e1df
1 changed files with 11 additions and 4 deletions
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15
Mac/mwerks/malloc/malloc.c
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@ -61,8 +61,6 @@ static char *rcsid = "$Id$";
#define VCHECK #define VCHECK
#endif /* USE_MALLOC_DEBUG */ #endif /* USE_MALLOC_DEBUG */
#define USE_CACHE_ALIGN /* Define for aligning everything on 16-byte boundaries */
typedef unsigned char u_char; typedef unsigned char u_char;
typedef unsigned long u_long; typedef unsigned long u_long;
typedef unsigned int u_int; typedef unsigned int u_int;
@ -104,9 +102,9 @@ union overhead {
#define ov_index ovu.ovu_index #define ov_index ovu.ovu_index
#define ov_rmagic ovu.ovu_rmagic #define ov_rmagic ovu.ovu_rmagic
#define ov_size ovu.ovu_size #define ov_size ovu.ovu_size
#ifdef USE_CACHE_ALIGN #ifdef USE_CACHE_ALIGNED
struct cachealigner { struct cachealigner {
u_long ovalign_1, ovalign_2, ovalign_3, ovalign_4; u_long ovalign[USE_CACHE_ALIGNED];
}; };
#endif /* USE_CACHE_ALIGN */ #endif /* USE_CACHE_ALIGN */
}; };
@ -263,10 +261,19 @@ morecore(bucket)
#ifdef DEBUG2 #ifdef DEBUG2
ASSERT(nblks*sz == amt); ASSERT(nblks*sz == amt);
#endif #endif
#ifdef USE_CACHE_ALIGNED
op = (union overhead *)NewPtr(amt+4*USE_CACHE_ALIGNED);
#else
op = (union overhead *)NewPtr(amt); op = (union overhead *)NewPtr(amt);
#endif
/* no more room! */ /* no more room! */
if (op == NULL) if (op == NULL)
return; return;
#ifdef USE_CACHE_ALIGNED
#define ALIGN_MASK (4*USE_CACHE_ALIGNED-1)
while ((long)op & ALIGN_MASK )
op = (union overhead *)((long)op+1);
#endif /* USE_CACHE_ALIGNED */
/* /*
* Add new memory allocated to that on * Add new memory allocated to that on
* free list for this hash bucket. * free list for this hash bucket.