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 ------------------------------ */
mallopt(int param_number,int value)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 
65