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/* $Id: vmtrace.c,v 1.1.1.1 2004/12/23 04:04:28 ellson Exp $ $Revision: 1.1.1.1 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#include "vmhdr.h"
/* Turn on tracing for regions
**
** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
*/
static int Trfile = -1;
static char Trbuf[128];
#if __STD_C
static char *trstrcpy(char *to, char *from, int endc)
#else
static char *trstrcpy(to, from, endc)
char *to;
char *from;
int endc;
#endif
{
reg int n;
n = strlen(from);
memcpy(to, from, n);
to += n;
if ((*to = endc))
to += 1;
return to;
}
/* convert a long value to an ascii representation */
#if __STD_C
static char *tritoa(Vmulong_t v, int type)
#else
static char *tritoa(v, type)
Vmulong_t v; /* value to convert */
int type; /* =0 base-16, >0: unsigned base-10, <0: signed base-10 */
#endif
{
char *s;
s = &Trbuf[sizeof(Trbuf) - 1];
*s-- = '\0';
if (type == 0) { /* base-16 */
reg char *digit = "0123456789abcdef";
do {
*s-- = digit[v & 0xf];
v >>= 4;
} while (v);
*s-- = 'x';
*s-- = '0';
} else if (type > 0) { /* unsigned base-10 */
do {
*s-- = (char) ('0' + (v % 10));
v /= 10;
} while (v);
} else { /* signed base-10 */
int sign = ((long) v < 0);
if (sign)
v = (Vmulong_t) (-((long) v));
do {
*s-- = (char) ('0' + (v % 10));
v /= 10;
} while (v);
if (sign)
*s-- = '-';
}
return s + 1;
}
/* generate a trace of some call */
#if __STD_C
static void trtrace(Vmalloc_t * vm,
Vmuchar_t * oldaddr, Vmuchar_t * newaddr, size_t size,
size_t align)
#else
static void trtrace(vm, oldaddr, newaddr, size, align)
Vmalloc_t *vm; /* region call was made from */
Vmuchar_t *oldaddr; /* old data address */
Vmuchar_t *newaddr; /* new data address */
size_t size; /* size of piece */
size_t align; /* alignment */
#endif
{
char buf[1024], *bufp, *endbuf;
reg Vmdata_t *vd = vm->data;
reg char *file = NIL(char *);
reg int line = 0;
int type;
#define SLOP 32
if (oldaddr == (Vmuchar_t *) (-1)) { /* printing busy blocks */
type = 0;
oldaddr = NIL(Vmuchar_t *);
} else {
type = vd->mode & VM_METHODS;
VMFILELINE(vm, file, line);
}
if (Trfile < 0)
return;
bufp = buf;
endbuf = buf + sizeof(buf);
bufp = trstrcpy(bufp, tritoa(oldaddr ? VLONG(oldaddr) : 0L, 0), ':');
bufp = trstrcpy(bufp, tritoa(newaddr ? VLONG(newaddr) : 0L, 0), ':');
bufp = trstrcpy(bufp, tritoa((Vmulong_t) size, 1), ':');
bufp = trstrcpy(bufp, tritoa((Vmulong_t) align, 1), ':');
bufp = trstrcpy(bufp, tritoa(VLONG(vm), 0), ':');
if (type & VM_MTBEST)
bufp = trstrcpy(bufp, "best", ':');
else if (type & VM_MTLAST)
bufp = trstrcpy(bufp, "last", ':');
else if (type & VM_MTPOOL)
bufp = trstrcpy(bufp, "pool", ':');
else if (type & VM_MTPROFILE)
bufp = trstrcpy(bufp, "profile", ':');
else if (type & VM_MTDEBUG)
bufp = trstrcpy(bufp, "debug", ':');
else
bufp = trstrcpy(bufp, "busy", ':');
if (file && file[0] && line > 0
&& (bufp + strlen(file) + SLOP) < endbuf) {
bufp = trstrcpy(bufp, file, ',');
bufp = trstrcpy(bufp, tritoa((Vmulong_t) line, 1), ':');
}
*bufp++ = '\n';
*bufp = '\0';
write(Trfile, buf, (bufp - buf));
}
#if __STD_C
int vmtrace(int file)
#else
int vmtrace(file)
int file;
#endif
{
int fd;
_Vmstrcpy = trstrcpy;
_Vmitoa = tritoa;
_Vmtrace = trtrace;
fd = Trfile;
Trfile = file;
return fd;
}
#if __STD_C
int vmtrbusy(Vmalloc_t * vm)
#else
int vmtrbusy(vm)
Vmalloc_t *vm;
#endif
{
Seg_t *seg;
Vmdata_t *vd = vm->data;
if (Trfile < 0
|| !(vd->mode & (VM_MTBEST | VM_MTDEBUG | VM_MTPROFILE)))
return -1;
for (seg = vd->seg; seg; seg = seg->next) {
Block_t *b, *endb;
Vmuchar_t *data;
size_t s;
for (b = SEGBLOCK(seg), endb = BLOCK(seg->baddr); b < endb;) {
if (ISJUNK(SIZE(b)) || !ISBUSY(SIZE(b)))
continue;
data = DATA(b);
if (vd->mode & VM_MTDEBUG) {
data = DB2DEBUG(data);
s = DBSIZE(data);
} else if (vd->mode & VM_MTPROFILE)
s = PFSIZE(data);
else
s = SIZE(b) & ~BITS;
trtrace(vm, (Vmuchar_t *) (-1), data, s, 0);
b = (Block_t *) ((Vmuchar_t *) DATA(b) + (SIZE(b) & ~BITS));
}
}
return 0;
}
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