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#include "stdinc.h"
#include "dat.h"
#include "fns.h"
#include "whack.h"
int debug;
int mainstacksize = 256*1024;
static void ventiserver(char *vaddr);
void
threadmain(int argc, char *argv[])
{
char *config, *haddr, *vaddr;
u32int mem, icmem, bcmem, minbcmem;
vaddr = "tcp!*!venti";
haddr = nil;
config = nil;
mem = 0xffffffffUL;
icmem = 0;
bcmem = 0;
ARGBEGIN{
case 'a':
vaddr = ARGF();
if(vaddr == nil)
goto usage;
break;
case 'B':
bcmem = unittoull(ARGF());
break;
case 'c':
config = ARGF();
if(config == nil)
goto usage;
break;
case 'C':
mem = unittoull(ARGF());
break;
case 'd':
debug = 1;
break;
case 'h':
haddr = ARGF();
if(haddr == nil)
goto usage;
break;
case 'I':
icmem = unittoull(ARGF());
break;
case 'w':
queuewrites = 1;
break;
default:
goto usage;
}ARGEND
print("whack %d\n", sizeof(Whack));
if(argc){
usage:
fprint(2, "usage: venti [-dw] [-a ventiaddress] [-h httpaddress] [-c config] [-C cachesize] [-I icachesize] [-B blockcachesize]\n");
threadexitsall("usage");
}
fmtinstall('V', vtscorefmt);
fmtinstall('H', encodefmt);
fmtinstall('F', vtfcallfmt);
if(config == nil)
config = "venti.conf";
if(initarenasum() < 0)
fprint(2, "warning: can't initialize arena summing process: %r");
if(initventi(config) < 0)
sysfatal("can't init server: %r");
if(mem == 0xffffffffUL)
mem = 1 * 1024 * 1024;
fprint(2, "initialize %d bytes of lump cache for %d lumps\n",
mem, mem / (8 * 1024));
initlumpcache(mem, mem / (8 * 1024));
icmem = u64log2(icmem / (sizeof(IEntry)+sizeof(IEntry*)) / ICacheDepth);
if(icmem < 4)
icmem = 4;
fprint(2, "initialize %d bytes of index cache for %d index entries\n",
(sizeof(IEntry)+sizeof(IEntry*)) * (1 << icmem) * ICacheDepth,
(1 << icmem) * ICacheDepth);
initicache(icmem, ICacheDepth);
/*
* need a block for every arena and every process
*/
minbcmem = maxblocksize *
(mainindex->narenas + mainindex->nsects*4 + 16);
if(bcmem < minbcmem)
bcmem = minbcmem;
fprint(2, "initialize %d bytes of disk block cache\n", bcmem);
initdcache(bcmem);
fprint(2, "sync arenas and index...\n");
if(syncindex(mainindex, 1) < 0)
sysfatal("can't sync server: %r");
if(queuewrites){
fprint(2, "initialize write queue...\n");
if(initlumpqueues(mainindex->nsects) < 0){
fprint(2, "can't initialize lump queues,"
" disabling write queueing: %r");
queuewrites = 0;
}
}
if(haddr){
fprint(2, "starting http server at %s\n", haddr);
if(httpdinit(haddr) < 0)
fprint(2, "warning: can't start http server: %r");
}
ventiserver(vaddr);
threadexitsall(0);
}
static void
vtrerror(VtReq *r, char *error)
{
r->rx.type = VtRerror;
r->rx.error = estrdup(error);
}
static void
ventiserver(char *addr)
{
Packet *p;
VtReq *r;
VtSrv *s;
char err[ERRMAX];
s = vtlisten(addr);
if(s == nil)
sysfatal("can't announce %s: %r", addr);
while((r = vtgetreq(s)) != nil){
r->rx.type = r->tx.type+1;
// print("req (arenas[0]=%p sects[0]=%p) %F\n",
// mainindex->arenas[0], mainindex->sects[0], &r->tx);
switch(r->tx.type){
default:
vtrerror(r, "unknown request");
break;
case VtTread:
if((r->rx.data = readlump(r->tx.score, r->tx.dtype, r->tx.count)) == nil){
rerrstr(err, sizeof err);
vtrerror(r, err);
}
break;
case VtTwrite:
p = r->tx.data;
r->tx.data = nil;
if(writelump(p, r->rx.score, r->tx.dtype, 0) < 0){
rerrstr(err, sizeof err);
vtrerror(r, err);
}
break;
case VtTsync:
flushqueue();
flushdcache();
break;
}
vtrespond(r);
}
}
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