1 7a4ee46d 2003-11-23 devnull #include "stdinc.h"
2 7a4ee46d 2003-11-23 devnull #include "dat.h"
3 7a4ee46d 2003-11-23 devnull #include "fns.h"
6 7a4ee46d 2003-11-23 devnull usage(void)
8 7a4ee46d 2003-11-23 devnull fprint(2, "usage: fmtarenas [-Z] [-b blocksize] [-a arenasize] name file\n");
9 7a4ee46d 2003-11-23 devnull threadexitsall(0);
13 7a4ee46d 2003-11-23 devnull threadmain(int argc, char *argv[])
15 7a4ee46d 2003-11-23 devnull ArenaPart *ap;
16 7a4ee46d 2003-11-23 devnull Part *part;
17 7a4ee46d 2003-11-23 devnull Arena *arena;
18 7a4ee46d 2003-11-23 devnull u64int addr, limit, asize, apsize;
19 7a4ee46d 2003-11-23 devnull char *file, *name, aname[ANameSize];
20 7a4ee46d 2003-11-23 devnull int i, n, blocksize, tabsize, zero;
22 7a4ee46d 2003-11-23 devnull fmtinstall('V', vtscorefmt);
24 7a4ee46d 2003-11-23 devnull statsinit();
26 7a4ee46d 2003-11-23 devnull blocksize = 8 * 1024;
27 7a4ee46d 2003-11-23 devnull asize = 512 * 1024 *1024;
28 7a4ee46d 2003-11-23 devnull tabsize = 64 * 1024; /* BUG: should be determine from number of arenas */
29 7a4ee46d 2003-11-23 devnull zero = 1;
30 7a4ee46d 2003-11-23 devnull ARGBEGIN{
31 7a4ee46d 2003-11-23 devnull case 'a':
32 7a4ee46d 2003-11-23 devnull asize = unittoull(ARGF());
33 7a4ee46d 2003-11-23 devnull if(asize == TWID64)
36 7a4ee46d 2003-11-23 devnull case 'b':
37 7a4ee46d 2003-11-23 devnull blocksize = unittoull(ARGF());
38 7a4ee46d 2003-11-23 devnull if(blocksize == ~0)
40 7a4ee46d 2003-11-23 devnull if(blocksize > MaxDiskBlock){
41 7a4ee46d 2003-11-23 devnull fprint(2, "block size too large, max %d\n", MaxDiskBlock);
42 7a4ee46d 2003-11-23 devnull threadexitsall("usage");
45 7a4ee46d 2003-11-23 devnull case 'Z':
46 7a4ee46d 2003-11-23 devnull zero = 0;
53 7a4ee46d 2003-11-23 devnull if(argc != 2)
56 7a4ee46d 2003-11-23 devnull name = argv[0];
57 7a4ee46d 2003-11-23 devnull file = argv[1];
59 7a4ee46d 2003-11-23 devnull if(nameok(name) < 0)
60 7a4ee46d 2003-11-23 devnull sysfatal("illegal name template %s", name);
62 7a4ee46d 2003-11-23 devnull part = initpart(file, 1);
63 7a4ee46d 2003-11-23 devnull if(part == nil)
64 7a4ee46d 2003-11-23 devnull sysfatal("can't open partition %s: %r", file);
67 7a4ee46d 2003-11-23 devnull zeropart(part, blocksize);
69 7a4ee46d 2003-11-23 devnull ap = newarenapart(part, blocksize, tabsize);
70 7a4ee46d 2003-11-23 devnull if(ap == nil)
71 7a4ee46d 2003-11-23 devnull sysfatal("can't initialize arena: %r");
73 7a4ee46d 2003-11-23 devnull apsize = ap->size - ap->arenabase;
74 7a4ee46d 2003-11-23 devnull n = apsize / asize;
75 7a4ee46d 2003-11-23 devnull if(apsize - (n * asize) >= MinArenaSize)
78 7a4ee46d 2003-11-23 devnull fprint(2, "configuring %s with arenas=%d for a total storage of bytes=%lld and directory bytes=%d\n",
79 7a4ee46d 2003-11-23 devnull file, n, apsize, ap->tabsize);
81 7a4ee46d 2003-11-23 devnull ap->narenas = n;
82 7a4ee46d 2003-11-23 devnull ap->map = MKNZ(AMap, n);
83 7a4ee46d 2003-11-23 devnull ap->arenas = MKNZ(Arena*, n);
85 7a4ee46d 2003-11-23 devnull addr = ap->arenabase;
86 7a4ee46d 2003-11-23 devnull for(i = 0; i < n; i++){
87 7a4ee46d 2003-11-23 devnull limit = addr + asize;
88 7a4ee46d 2003-11-23 devnull if(limit >= ap->size || ap->size - limit < MinArenaSize){
89 7a4ee46d 2003-11-23 devnull limit = ap->size;
90 7a4ee46d 2003-11-23 devnull if(limit - addr < MinArenaSize)
91 7a4ee46d 2003-11-23 devnull sysfatal("bad arena set math: runt arena at %lld,%lld %lld\n", addr, limit, ap->size);
94 7a4ee46d 2003-11-23 devnull snprint(aname, ANameSize, "%s%d", name, i);
96 7a4ee46d 2003-11-23 devnull fprint(2, "adding arena %s at [%lld,%lld)\n", aname, addr, limit);
98 7a4ee46d 2003-11-23 devnull arena = newarena(part, aname, addr, limit - addr, blocksize);
99 7a4ee46d 2003-11-23 devnull if(!arena)
100 7a4ee46d 2003-11-23 devnull fprint(2, "can't make new arena %s: %r", aname);
101 7a4ee46d 2003-11-23 devnull freearena(arena);
103 7a4ee46d 2003-11-23 devnull ap->map[i].start = addr;
104 7a4ee46d 2003-11-23 devnull ap->map[i].stop = limit;
105 7a4ee46d 2003-11-23 devnull namecp(ap->map[i].name, aname);
107 7a4ee46d 2003-11-23 devnull addr = limit;
110 7a4ee46d 2003-11-23 devnull if(wbarenapart(ap) < 0)
111 7a4ee46d 2003-11-23 devnull fprint(2, "can't write back arena partition header for %s: %r\n", file);
113 7a4ee46d 2003-11-23 devnull threadexitsall(0);