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disable logging

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This commit is contained in:
rsc 2005-02-14 19:33:42 +00:00
parent 8ee6ad4d96
commit 5ddc97fc3e
4 changed files with 58 additions and 26 deletions
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40
src/libventi/log.c
View file

@ -2,8 +2,11 @@
#include <libc.h>
#include <venti.h>
int ventilogging;
#define log not_the_log_library_call
static char Eremoved[] = "[removed]";
enum
{ /* defaults */
LogChunkSize = 8192,
@ -35,6 +38,9 @@ vtlogopen(char *name, uint size)
char *p;
VtLog *l, *last;
if(!ventilogging)
return nil;
h = hash(name)%nelem(vl.hash);
qlock(&vl.lk);
last = nil;
@ -65,6 +71,7 @@ vtlogopen(char *name, uint size)
p = (char*)(l->chunk+nc);
for(i=0; i<nc; i++){
l->chunk[i].p = p;
l->chunk[i].wp = p;
p += LogChunkSize;
l->chunk[i].ep = p;
}
@ -74,6 +81,7 @@ vtlogopen(char *name, uint size)
/* insert */
l->next = vl.hash[h];
vl.hash[h] = l;
l->ref++;
l->ref++;
qunlock(&vl.lk);
@ -87,9 +95,11 @@ vtlogclose(VtLog *l)
return;
qlock(&vl.lk);
if(--l->ref == 0)
if(--l->ref == 0){
/* must not be in hash table */
assert(l->name == Eremoved);
free(l);
else
}else
assert(l->ref > 0);
qunlock(&vl.lk);
}
@ -109,6 +119,8 @@ vtlogremove(char *name)
last->next = l->next;
else
vl.hash[h] = l->next;
l->name = Eremoved;
l->next = nil;
qunlock(&vl.lk);
vtlogclose(l);
return;
@ -116,16 +128,35 @@ vtlogremove(char *name)
qunlock(&vl.lk);
}
static int
timefmt(Fmt *fmt)
{
static uvlong t0;
uvlong t;
if(t0 == 0)
t0 = nsec();
t = nsec()-t0;
return fmtprint(fmt, "T+%d.%04d", (uint)(t/1000000000), (uint)(t%1000000000)/100000);
}
void
vtlogvprint(VtLog *l, char *fmt, va_list arg)
{
int n;
char *p;
VtLogChunk *c;
static int first = 1;
if(l == nil)
return;
if(first){
fmtinstall('T', timefmt);
first = 0;
}
qlock(&l->lk);
c = l->w;
n = c->ep - c->wp;
@ -160,8 +191,10 @@ vtlog(char *name, char *fmt, ...)
{
VtLog *l;
va_list arg;
l = vtlogopen(name, LogSize);
if(l == nil)
return;
va_start(arg, fmt);
vtlogvprint(l, fmt, arg);
va_end(arg);
@ -183,6 +216,5 @@ vtlogdump(int fd, VtLog *l)
c = l->chunk;
write(fd, c->p, c->wp-c->p);
}
vtlogclose(l);
}