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platforms define as 512K. For 64-bit platforms as 32MB. The lower

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Ulrich Drepper 2006-08-22 06:42:35 +00:00
parent e404fb16fc
commit bd2c234116
3 changed files with 6 additions and 6 deletions
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2
ChangeLog
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@ -1,7 +1,7 @@
2006-08-21 Ulrich Drepper <drepper@redhat.com>
* malloc/malloc.c (DEFAULT_MMAP_THRESHOLD_MAX): For 32-bit
platforms define as 1MB. For 64-bit platforms as 32MB. The lower
platforms define as 512K. For 64-bit platforms as 32MB. The lower
limit is needed to avoid the exploding of the address space
requirement for secondary heaps.
* malloc/arena.c (HEAP_MAX_SIZE): Define using

2
malloc/arena.c
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@ -25,7 +25,7 @@
#define HEAP_MIN_SIZE (32*1024)
#ifndef HEAP_MAX_SIZE
# ifdef DEFAULT_MMAP_THRESHOLD_MAX
# define HEAP_MAX_SIZE DEFAULT_MMAP_THRESHOLD_MAX
# define HEAP_MAX_SIZE (2 * DEFAULT_MMAP_THRESHOLD_MAX)
# else
# define HEAP_MAX_SIZE (1024*1024) /* must be a power of two */
# endif

8
malloc/malloc.c
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@ -1427,12 +1427,12 @@ int __posix_memalign(void **, size_t, size_t);
#ifndef DEFAULT_MMAP_THRESHOLD_MAX
/* For 32-bit platforms we cannot increase the maximum mmap
threshold much because it is also the minimum value for the
maximum heap size and its alignment. Going above 1MB wastes too
much address space. */
maximum heap size and its alignment. Going above 512k (i.e., 1M
for new heaps) wastes too much address space. */
# if __WORDSIZE == 32
# define DEFAULT_MMAP_THRESHOLD_MAX (1024 * 1024)
# define DEFAULT_MMAP_THRESHOLD_MAX (512 * 1024)
# else
# define DEFAULT_MMAP_THRESHOLD_MAX (8 * 1024 * 1024 * sizeof(long))
# define DEFAULT_MMAP_THRESHOLD_MAX (4 * 1024 * 1024 * sizeof(long))
# endif
#endif