| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | This is a version (aka dlmalloc) of malloc/free/realloc written by |
| 3 | Doug Lea and released to the public domain. Use, modify, and |
| 4 | redistribute this code without permission or acknowledgement in any |
| 5 | way you wish. Send questions, comments, complaints, performance |
| 6 | data, etc to dl@cs.oswego.edu |
| 7 | |
| 8 | VERSION 2.7.2 Sat Aug 17 09:07:30 2002 Doug Lea (dl at gee) |
| 9 | |
| 10 | Note: There may be an updated version of this malloc obtainable at |
| 11 | ftp://gee.cs.oswego.edu/pub/misc/malloc.c |
| 12 | Check before installing! |
| 13 | |
| 14 | Hacked up for uClibc by Erik Andersen <andersen@codepoet.org> |
| 15 | */ |
| 16 | |
| 17 | #include "malloc.h" |
| 18 | |
| 19 | |
| 20 | /* ------------------------------ mallopt ------------------------------ */ |
| 21 | int mallopt(int param_number, int value) |
| 22 | { |
| 23 | int ret; |
| 24 | mstate av; |
| 25 | |
| 26 | ret = 0; |
| 27 | |
| 28 | __MALLOC_LOCK; |
| 29 | av = get_malloc_state(); |
| 30 | /* Ensure initialization/consolidation */ |
| 31 | __malloc_consolidate(av); |
| 32 | |
| 33 | switch(param_number) { |
| 34 | case M_MXFAST: |
| 35 | if (value >= 0 && value <= MAX_FAST_SIZE) { |
| 36 | set_max_fast(av, value); |
| 37 | ret = 1; |
| 38 | } |
| 39 | break; |
| 40 | |
| 41 | case M_TRIM_THRESHOLD: |
| 42 | av->trim_threshold = value; |
| 43 | ret = 1; |
| 44 | break; |
| 45 | |
| 46 | case M_TOP_PAD: |
| 47 | av->top_pad = value; |
| 48 | ret = 1; |
| 49 | break; |
| 50 | |
| 51 | case M_MMAP_THRESHOLD: |
| 52 | av->mmap_threshold = value; |
| 53 | ret = 1; |
| 54 | break; |
| 55 | |
| 56 | case M_MMAP_MAX: |
| 57 | av->n_mmaps_max = value; |
| 58 | ret = 1; |
| 59 | break; |
| 60 | } |
| 61 | __MALLOC_UNLOCK; |
| 62 | return ret; |
| 63 | } |
| 64 | |