ref: a920c765f2b4130590fb5971a50690b21664957a
dir: /appl/lib/profile.b/
implement Profile;
include "sys.m";
sys: Sys;
include "draw.m";
include "bufio.m";
bufio: Bufio;
Iobuf: import bufio;
include "workdir.m";
workdir: Workdir;
include "debug.m";
debug: Debug;
Sym: import debug;
include "dis.m";
dism: Dis;
include "profile.m";
# merge common code
PROF: con "/prof";
CTL: con "ctl";
NAME: con "name";
MPATH: con "path";
HISTOGRAM: con "histogram";
inited: int;
modl: string;
lasterr: string;
bspath := array[] of
{
("/dis/", "/appl/cmd/"),
("/dis/", "/appl/"),
};
error(s: string)
{
lasterr = sys->sprint("%s: %r", s);
}
error0(s: string)
{
lasterr = s;
}
cleare()
{
lasterr = nil;
}
lasterror(): string
{
return lasterr;
}
init(): int
{
cleare();
sys = load Sys Sys->PATH;
bufio = load Bufio Bufio->PATH;
debug = load Debug Debug->PATH;
if(debug == nil){
error("cannot load Debug module");
return -1;
}
debug->init();
(ok, nil) := sys->stat(PROF + "/ctl");
if (ok == -1) {
if(sys->bind("#P", PROF, Sys->MREPL|Sys->MCREATE) < 0){
error(sys->sprint("cannot bind prof device to /prof"));
return -1;
}
}
inited = 1;
return 0;
}
end(): int
{
cleare();
inited = 0;
modl = nil;
if(write(mkpath(PROF, CTL), "end") < 0)
return -1;
return 0;
}
start(): int
{
cleare();
if(!inited && init() < 0)
return -1;
if(write(mkpath(PROF, CTL), "module " + modl) < 0)
return -1;
if(write(mkpath(PROF, CTL), "start") < 0)
return -1;
return 0;
}
cpstart(pid: int): int
{
cleare();
if(!inited && init() < 0)
return -1;
if(write(mkpath(PROF, CTL), "module " + modl) < 0)
return -1;
if(write(mkpath(PROF, CTL), "startcp " + string pid) < 0)
return -1;
return 0;
}
memstart(m: int): int
{
cleare();
if(!inited && init() < 0)
return -1;
if(modl != nil && write(mkpath(PROF, CTL), "module " + modl) < 0)
return -1;
start := "startmp";
if(m == 0)
m = MAIN|HEAP|IMAGE;
if(m&MAIN)
start += "1";
if(m&HEAP)
start += "2";
if(m&IMAGE)
start += "3";
if(write(mkpath(PROF, CTL), start) < 0)
return -1;
return 0;
}
stop(): int
{
cleare();
if(!inited && init() < 0)
return -1;
if(write(mkpath(PROF, CTL), "stop") < 0)
return -1;
return 0;
}
sample(i: int): int
{
cleare();
if(i <= 0){
error0(sys->sprint("bad sample rate %d", i));
return -1;
}
if(write(mkpath(PROF, CTL), "interval " + string i) < 0)
return -1;
return 0;
}
profile(m: string): int
{
cleare();
modl = m + " " + modl;
return 0;
}
stats(): Prof
{
mp: Modprof;
p: Prof;
mpl: list of Modprof;
cleare();
fd := sys->open(PROF, Sys->OREAD);
if(fd == nil){
error(sys->sprint("cannot open %s for reading", PROF));
return (nil, 0, nil);
}
total := 0;
for(;;){
(nr, d) := sys->dirread(fd);
if(nr <= 0)
break;
for(i := 0; i < nr; i++){
if(d[i].name == CTL)
continue;
dn := mkpath(PROF, d[i].name);
mp.name = read(mkpath(dn, NAME));
mp.path = read(mkpath(dn, MPATH));
fdh := sys->open(mkpath(dn, HISTOGRAM), Sys->OREAD);
if(fdh == nil)
continue;
(mp.srcpath, mp.linetab, mp.funtab, mp.total) = tprofile(fdh, mp.path);
if((sp := getb(mp.path)) != nil)
mp.srcpath = sp;
if(mp.total != 0){
mpl = mp :: mpl;
total += mp.total;
}
}
}
p.mods = mpl;
p.total = total;
return p;
}
cpstats(rec: int, v: int): Prof
{
m: string;
mp: Modprof;
p: Prof;
mpl: list of Modprof;
cleare();
fd := sys->open(PROF, Sys->OREAD);
if(fd == nil){
error(sys->sprint("cannot open %s for reading", PROF));
return (nil, 0, nil);
}
total := 0;
for(;;){
(nr, d) := sys->dirread(fd);
if(nr <= 0)
break;
for(i:=0; i<nr; i++){
if(d[i].name == CTL)
continue;
dn := mkpath(PROF, d[i].name);
mp.name = read(mkpath(dn, NAME));
mp.path = read(mkpath(dn, MPATH));
fdh := sys->open(mkpath(dn, HISTOGRAM), Sys->OREAD);
if(fdh == nil)
continue;
(m, mp.srcpath, mp.rawtab, mp.linetab, mp.rngtab, mp.total, mp.coverage) = cprofile(fdh, mp.path, rec, v);
if(mp.name == nil)
mp.name = m;
if((sp := getb(mp.path)) != nil)
mp.srcpath = sp;
if(len mp.rawtab > 0){
mpl = mp :: mpl;
total += mp.total;
}
}
}
p.mods = mpl;
p.total = total;
return p;
}
cpfstats(v: int): Prof
{
mp: Modprof;
p: Prof;
mpl: list of Modprof;
cleare();
total := 0;
(nil, l) := sys->tokenize(modl, " ");
for( ; l != nil; l = tl l){
s := hd l;
suf := suff(s);
if(suf == nil)
s += ".dis";
else
s = repsuff(s, "."+suf, ".dis");
if(!exists(s) && s[0] != '/' && s[0:2] != "./")
s = "/dis/"+s;
mp.path = s;
(mp.name, mp.srcpath, mp.rawtab, mp.linetab, mp.rngtab, mp.total, mp.coverage) = cprofile(nil, mp.path, 1, v);
if((sp := getb(mp.path)) != nil)
mp.srcpath = sp;
if(len mp.rawtab > 0){
mpl = mp :: mpl;
total += mp.total;
}
}
p.mods = mpl;
p.total = total;
return p;
}
memstats(): Prof
{
mp: Modprof;
p: Prof;
mpl: list of Modprof;
cleare();
fd := sys->open(PROF, Sys->OREAD);
if(fd == nil){
error(sys->sprint("cannot open %s for reading", PROF));
return (nil, 0, nil);
}
total := totale := 0;
for(;;){
(nr, d) := sys->dirread(fd);
if(nr <= 0)
break;
for(i:=0; i<nr; i++){
if(d[i].name == CTL)
continue;
dn := mkpath(PROF, d[i].name);
mp.name = read(mkpath(dn, NAME));
mp.path = read(mkpath(dn, MPATH));
fdh := sys->open(mkpath(dn, HISTOGRAM), Sys->OREAD);
if(fdh == nil)
continue;
mp.totals = array[1] of int;
(mp.srcpath, mp.linetab, mp.funtab, mp.total, mp.totals[0]) = mprofile(fdh, mp.path);
if((sp := getb(mp.path)) != nil)
mp.srcpath = sp;
if(mp.total != 0 || mp.totals[0] != 0){
mpl = mp :: mpl;
total += mp.total;
totale += mp.totals[0];
}
}
}
p.mods = mpl;
p.total = total;
p.totals = array[1] of int;
p.totals[0] = totale;
return p;
}
tprofile(fd: ref Sys->FD, dis: string): (string, array of int, array of Funprof, int)
{
sbl := findsbl(dis);
if(sbl == nil){
error0(sys->sprint("cannot locate symbol table file for %s", dis));
return (nil, nil, nil, 0);
}
(sym, err) := debug->sym(sbl);
if(sym == nil){
error0(sys->sprint("bad symbol table file: %s", err));
return (nil, nil, nil, 0);
}
nlines := 0;
nl := len sym.src;
for(i := 0; i < nl; i++){
if((l := sym.src[i].stop.line) > nlines)
nlines = l;
}
name := sym.src[0].start.file;
line := array[nlines+1] of int;
for(i = 0; i <= nlines; i++)
line[i] = 0;
nf := len sym.fns;
fun := array[nf] of Funprof;
for(i = 0; i < nf; i++){
fun[i].name = sym.fns[i].name;
# src seems to be always nil
# fun[i].file = sym.fns[i].src.start.file;
# fun[i].line = (sym.fns[i].src.start.line+sym.fns[i].src.stop.line)/2;
src := sym.pctosrc(sym.fns[i].offset);
if(src != nil)
fun[i].line = src.start.line;
else
fun[i].line = 0;
fun[i].count = 0;
}
buf := array[32] of byte;
# pc := 0;
tot := 0;
fi := 0;
# for(i=0; i < nl; i++) sys->print("%d -> %d\n", i, sym.pctosrc(i).start.line);
while((m := sys->read(fd, buf, len buf)) > 0){
(nw, lw) := sys->tokenize(string buf[0:m], " ");
if(nw != 2){
error0("bad histogram data");
return (nil, nil, nil, 0);
}
pc := int hd lw;
f := int hd tl lw;
rpc := pc-1;
src := sym.pctosrc(rpc);
if(src == nil)
continue;
l1 := src.start.line;
l2 := src.stop.line;
if(l1 == 0 || l2 == 0)
continue;
if((nl = l2-l1+1) == 1)
line[l1] += f;
else{
q := f/nl;
r := f-q*nl;
for(i = l1; i <= l2; i++)
line[i] += q+(r-->0);
}
if(fi < nf){
if(rpc >= sym.fns[fi].offset && rpc < sym.fns[fi].stoppc)
fun[fi].count += f;
else{
while(fi < nf && rpc >= sym.fns[fi].stoppc)
fi++;
# fi++;
if(fi >= nf && f != 0)
error0(sys->sprint("bad fn index"));
if(fi < nf)
fun[fi].count += f;
}
}
tot += f;
# sys->print("pc %d count %d l1 %d l2 %d\n", rpc, f, l1, l2);
}
return (name, line, fun, tot);
}
cprofile(fd: ref Sys->FD, dis: string, rec: int, v: int): (string, string, array of (int, int), array of int, array of ref Range, int, int)
{
freq := v&FREQUENCY;
sbl := findsbl(dis);
if(sbl == nil){
error0(sys->sprint("cannot locate symbol table file for %s", dis));
return (nil, nil, nil, nil, nil, 0, 0);
}
(sym, err) := debug->sym(sbl);
if(sym == nil){
error0(sys->sprint("bad symbol table file: %s", err));
return (nil, nil, nil, nil, nil, 0, 0);
}
nlines := 0;
nl := len sym.src;
for(i := 0; i < nl; i++){
if((l := sym.src[i].start.line) > nlines)
nlines = l;
if((l = sym.src[i].stop.line) > nlines)
nlines = l;
}
name := sym.src[0].start.file;
line := array[nlines+1] of int;
for(i = 0; i <= nlines; i++){
if(freq)
line[i] = -1;
else
line[i] = 0;
}
rng := array[nlines+1] of ref Range;
for(i = 0; i < nl; i++)
cover(i, -1, sym, line, rng, freq);
buf := array[32] of byte;
nr := 0;
r := array[1024] of (int, int);
while((m := sys->read(fd, buf, len buf)) > 0){
(nw, lw) := sys->tokenize(string buf[0:m], " ");
if(nw != 2){
error0("bad histogram data");
return (nil, nil, nil, nil, nil, 0, 0);
}
(r, nr) = add(r, nr, int hd lw, int hd tl lw);
}
r = clip(r, nr);
if(rec){
wt := nr > 0;
prf := repsuff(sbl, ".sbl", ".prf");
if(exists(prf)){
if(stamp(sbl) > stamp(prf)){
error0(sys->sprint("%s later than %s", sbl, prf));
return (nil, nil, nil, nil, nil, 0, 0);
}
r = mergeprof(r, readprof(prf));
nr = len r;
}
if(wt && writeprof(prf, r) < 0){
error0(sys->sprint("cannot write profile file %s", prf));
return (nil, nil, nil, nil, nil, 0, 0);
}
}
tot := 0;
lpc := 0;
dise := dist := 0;
for(i = 0; i < nr; i++){
(pc, f) := r[i];
for( ; lpc < pc; lpc++){
cover(lpc, 0, sym, line, rng, freq);
dist++;
}
cover(pc, f, sym, line, rng, freq);
dist++;
if(f != 0)
dise++;
tot += f;
lpc = pc+1;
}
for( ; lpc < nl; lpc++){
cover(lpc, 0, sym, line, rng, freq);
dist++;
}
if(dist == 0)
dist = 1;
return (sym.name, name, r, line, rng, tot, (100*dise)/dist);
}
show(p: Prof, v: int): int
{
i: int;
cleare();
tot := p.total;
if(tot == 0)
return 0;
verbose := v&VERBOSE;
fullhdr := v&FULLHDR;
for(ml := p.mods; ml != nil; ml = tl ml){
mp := hd ml;
if(mp.total == 0)
continue;
if((b := getb(mp.path)) == nil)
continue;
sys->print("\nModule: %s(%s)\n\n", mp.name, mp.path);
line := mp.linetab;
if(v&FUNCTION){
fun := mp.funtab;
nf := len fun;
for(i = 0; i < nf; i++)
if(verbose || fun[i].count != 0){
if(fullhdr)
sys->print("%s:", b);
sys->print("%d\t%.2f\t%s()\n", fun[i].line, 100.0*(real fun[i].count)/(real tot), fun[i].name);
}
sys->print("\n**** module sampling points %d ****\n\n", mp.total);
if(v&LINE)
sys->print("\n");
}
if(v&LINE){
bio := bufio->open(b, Bufio->OREAD);
if(bio == nil){
error(sys->sprint("cannot open %s for reading", b));
continue;
}
i = 1;
ll := len line;
while((s := bio.gets('\n')) != nil){
f := 0;
if(i < ll)
f = line[i];
if(verbose || f != 0){
if(fullhdr)
sys->print("%s:", b);
sys->print("%d\t%.2f\t%s", i, 100.0*(real f)/(real tot), s);
}
i++;
}
sys->print("\n**** module sampling points %d ****\n\n", mp.total);
}
}
if(p.mods != nil && tl p.mods != nil)
sys->print("\n**** total sampling points %d ****\n\n", p.total);
return 0;
}
cpshow(p: Prof, v: int): int
{
i: int;
cleare();
tot := p.total;
fullhdr := v&FULLHDR;
freq := v&FREQUENCY;
for(ml := p.mods; ml != nil; ml = tl ml){
mp := hd ml;
if((b := getb(mp.path)) == nil)
continue;
sys->print("\nModule: %s(%s)", mp.name, mp.path);
sys->print("\t%d%% coverage\n\n", mp.coverage);
if(mp.coverage == 100 && !freq)
continue;
line := mp.linetab;
rng := mp.rngtab;
bio := bufio->open(b, Bufio->OREAD);
if(bio == nil){
error(sys->sprint("cannot open %s for reading", b));
continue;
}
i = 1;
ll := len line;
while((s := bio.gets('\n')) != nil){
f := 0;
if(i < ll)
f = line[i];
if(fullhdr)
sys->print("%s:", b);
sys->print("%d\t", i);
if(rng != nil && i < ll && (r := rng[i]) != nil && multirng(r)){
for( ; r != nil; r = r.n){
sys->print("%s", trans(r.f, freq));
if(r.n != nil)
sys->print("|");
}
}
else
sys->print("%s", trans(f, freq));
sys->print("\t%s", s);
i++;
}
sys->print("\n**** module dis instructions %d ****\n\n", mp.total);
}
if(p.mods != nil && tl p.mods != nil)
sys->print("\n**** total number dis instructions %d ****\n\n", p.total);
return 0;
}
coverage(p: Prof, v: int): Coverage
{
i: int;
clist: Coverage;
cleare();
freq := v&FREQUENCY;
for(ml := p.mods; ml != nil; ml = tl ml){
mp := hd ml;
if((b := getb(mp.path)) == nil)
continue;
line := mp.linetab;
rng := mp.rngtab;
bio := bufio->open(b, Bufio->OREAD);
if(bio == nil){
error(sys->sprint("cannot open %s for reading", b));
continue;
}
i = 1;
ll := len line;
llist: list of (list of (int, int, int), string);
while((s := bio.gets('\n')) != nil){
f := 0;
if(i < ll)
f = line[i];
rlist: list of (int, int, int);
if(rng != nil && i < ll && (r := rng[i]) != nil){
for( ; r != nil; r = r.n){
if(r.u == ∞)
r.u = len s - 1;
if(freq){
if(r.f > 0)
rlist = (r.l, r.u, r.f) :: rlist;
}
else{
if(r.f&NEX)
rlist = (r.l, r.u, (r.f&EXE)==EXE) :: rlist;
}
}
}
else{
if(freq){
if(f > 0)
rlist = (0, len s - 1, f) :: rlist;
}
else{
if(f&NEX)
rlist = (0, len s - 1, (f&EXE)==EXE) :: nil;
}
}
llist = (rlist, s) :: llist;
i++;
}
if(freq)
n := mp.total;
else
n = mp.coverage;
clist = (b, n, rev(llist)) :: clist;
}
return clist;
}
∞: con 1<<30;
DIS: con 1;
EXE: con 2;
NEX: con 4;
cover(pc: int, f: int, sym: ref Debug->Sym, line: array of int, rng: array of ref Range, freq: int)
{
v: int;
src := sym.pctosrc(pc);
if(src == nil)
return;
l1 := src.start.line;
l2 := src.stop.line;
if(l1 == 0 || l2 == 0)
return;
c1 := src.start.pos;
c2 := src.stop.pos;
if(freq){
v = 0;
if(f > 0)
v = f;
}
else{
v = DIS;
if(f > 0)
v = EXE;
else if(f == 0)
v = NEX;
}
for(i := l1; i <= l2; i++){
r1 := 0;
r2 := ∞;
if(i == l1)
r1 = c1;
if(i == l2)
r2 = c2;
if(rng != nil)
rng[i] = mrgrng(addrng(rng[i], r1, r2, v, freq));
if(freq){
if(v > line[i])
line[i] = v;
}
else
line[i] |= v;
# if(i==123) sys->print("%d %d-%d %d %d\n", i, r1, r2, v, pc);
}
}
arng(c1: int, c2: int, f: int, tr: ref Range, lr: ref Range, r: ref Range): ref Range
{
nr := ref Range(c1, c2, f, tr);
if(lr == nil)
r = nr;
else
lr.n = nr;
return r;
}
addrng(r: ref Range, c1: int, c2: int, f: int, freq: int): ref Range
{
lr: ref Range;
if(c1 > c2)
return r;
for(tr := r; tr != nil; tr = tr.n){
r1 := tr.l;
r2 := tr.u;
if(c1 < r1){
if(c2 < r1)
return arng(c1, c2, f, tr, lr, r);
else if(c2 <= r2){
r = addrng(r, c1, r1-1, f, freq);
return addrng(r, r1, c2, f, freq);
}
else{
r = addrng(r, c1, r1-1, f, freq);
r = addrng(r, r1, r2, f, freq);
return addrng(r, r2+1, c2, f, freq);
}
}
else if(c1 <= r2){
if(c2 <= r2){
v := tr.f;
tr.l = c1;
tr.u = c2;
if(freq){
if(f > tr.f)
tr.f = f;
}
else
tr.f |= f;
r = addrng(r, r1, c1-1, v, freq);
return addrng(r, c2+1, r2, v, freq);
}
else{
r = addrng(r, c1, r2, f, freq);
return addrng(r, r2+1, c2, f, freq);
}
}
lr = tr;
}
return arng(c1, c2, f, nil, lr, r);
}
mrgrng(r: ref Range): ref Range
{
lr: ref Range;
for(tr := r; tr != nil; tr = tr.n){
if(lr != nil && lr.u >= tr.l)
sys->print("ERROR %d %d\n", lr.u, tr.l);
if(lr != nil && lr.f == tr.f && lr.u+1 == tr.l){
lr.u = tr.u;
lr.n = tr.n;
}
else
lr = tr;
}
return r;
}
multirng(r: ref Range): int
{
f := r.f;
for(tr := r; tr != nil; tr = tr.n)
if(tr.f != f)
return 1;
return 0;
}
add(r: array of (int, int), nr: int, pc: int, f: int): (array of (int, int), int)
{
l := len r;
if(nr == l){
s := array[2*l] of (int, int);
s[0:] = r[0: nr];
r = s;
}
r[nr++] = (pc, f);
return (r, nr);
}
clip(r: array of (int, int), nr: int): array of (int, int)
{
l := len r;
if(nr < l){
s := array[nr] of (int, int);
s[0:] = r[0: nr];
r = s;
}
return r;
}
readprof(f: string): array of (int, int)
{
b := bufio->open(f, Bufio->OREAD);
if(b == nil)
return nil;
nr := 0;
r := array[1024] of (int, int);
while((buf := b.gets('\n')) != nil){
(nw, lw) := sys->tokenize(buf, " ");
if(nw != 2){
error0("bad raw data");
return nil;
}
(r, nr) = add(r, nr, int hd lw, int hd tl lw);
}
r = clip(r, nr);
return r;
}
mergeprof(r1, r2: array of (int, int)): array of (int, int)
{
nr := 0;
r := array[1024] of (int, int);
l1 := len r1;
l2 := len r2;
for((i, j) := (0, 0); i < l1 || j < l2; ){
if(i < l1)
(pc1, f1) := r1[i];
else
pc1 = ∞;
if(j < l2)
(pc2, f2) := r2[j];
else
pc2 = ∞;
if(pc1 < pc2){
(r, nr) = add(r, nr, pc1, f1);
i++;
}
else if(pc1 > pc2){
(r, nr) = add(r, nr, pc2, f2);
j++;
}
else{
(r, nr) = add(r, nr, pc1, f1+f2);
i++;
j++;
}
}
r = clip(r, nr);
return r;
}
writeprof(f: string, r: array of (int, int)): int
{
fd := sys->create(f, Sys->OWRITE, 8r664);
if(fd == nil)
return -1;
l := len r;
for(i := 0; i < l; i++){
(pc, fr) := r[i];
sys->fprint(fd, "%d %d\n", pc, fr);
}
return 0;
}
trans(f: int, freq: int): string
{
if(freq)
return transf(f);
else
return transc(f);
}
transf(f: int): string
{
if(f < 0)
return " ";
return string f;
}
transc(f: int): string
{
c := "";
case(f){
0 => c = " ";
DIS|EXE => c = "+";
DIS|NEX => c = "-";
DIS|EXE|NEX => c = "?";
* =>
error(sys->sprint("bad code %d\n", f));
}
return c;
}
getb(dis: string): string
{
b := findb(dis);
if(b == nil){
error0(sys->sprint("cannot locate source file for %s\n", dis));
return nil;
}
if(stamp(b) > stamp(dis)){
error0(sys->sprint("%s later than %s", b, dis));
return nil;
}
return b;
}
mkpath(d: string, f: string): string
{
return d+"/"+f;
}
suff(s: string): string
{
(n, l) := sys->tokenize(s, ".");
if(n > 1){
while(tl l != nil)
l = tl l;
return hd l;
}
return nil;
}
repsuff(s: string, old: string, new: string): string
{
lo := len old;
ls := len s;
if(lo <= ls && s[ls-lo:ls] == old)
return s[0:ls-lo]+new;
return s;
}
read(f: string): string
{
if((fd := sys->open(f, Sys->OREAD)) == nil){
error(sys->sprint("cannot open %s for reading", f));
return nil;
}
buf := array[128] of byte;
n := sys->read(fd, buf, len buf);
return string buf[0:n];
}
write(f: string, s: string): int
{
if((fd := sys->open(f, Sys->OWRITE)) == nil){
error(sys->sprint("cannot open %s for writing", f));
return -1;
}
b := array of byte s;
if((n := sys->write(fd, b, len b)) != len b){
error(sys->sprint("cannot write %s to file %s", s, f));
return -1;
}
return 0;
}
exists(f: string): int
{
return sys->open(f, Sys->OREAD) != nil;
}
stamp(f: string): int
{
(ok, d) := sys->stat(f);
if(ok < 0)
return 0;
return d.mtime;
}
findb(dis: string): string
{
if(dism == nil){
dism = load Dis Dis->PATH;
if(dism != nil)
dism->init();
}
if(dism != nil && (b := dism->src(dis)) != nil && exists(b))
return b;
return findfile(repsuff(dis, ".dis", ".b"));
}
findsbl(dis: string): string
{
b := findb(dis);
if(b != nil){
sbl := repsuff(b, ".b", ".sbl");
if(exists(sbl))
return sbl;
return findfile(sbl);
}
return findfile(repsuff(dis, ".dis", ".sbl"));
}
findfile(s: string): string
{
if(exists(s))
return s;
if(s != nil && s[0] != '/'){
if(workdir == nil)
workdir = load Workdir Workdir->PATH;
if(workdir == nil){
error("cannot load Workdir module");
return nil;
}
s = workdir->init() + "/" + s;
}
(d, f) := split(s, '/');
(fp, nil) := split(f, '.');
if(fp != nil)
fp = fp[0: len fp - 1];
for(k := 0; k < 2; k++){
if(k == 0)
str := s;
else
str = d;
ls := len str;
for(i := 0; i < len bspath; i++){
(dis, src) := bspath[i];
ld := len dis;
if(ls >= ld && str[:ld] == dis){
if(k == 0)
ns := src + str[ld:];
else
ns = src + str[ld:] + fp + "/" + f;
if(exists(ns))
return ns;
}
}
}
return nil;
}
split(s: string, c: int): (string, string)
{
for(i := len s - 1; i >= 0; --i)
if(s[i] == c)
break;
return (s[0:i+1], s[i+1:]);
}
rev(llist: list of (list of (int, int, int), string)): list of (list of (int, int, int), string)
{
r: list of (list of (int, int, int), string);
for(l := llist; l != nil; l = tl l)
r = hd l :: r;
return r;
}
mprofile(fd: ref Sys->FD, dis: string): (string, array of int, array of Funprof, int, int)
{
sbl := findsbl(dis);
if(sbl == nil){
error0(sys->sprint("cannot locate symbol table file for %s", dis));
return (nil, nil, nil, 0, 0);
}
(sym, err) := debug->sym(sbl);
if(sym == nil){
error0(sys->sprint("bad symbol table file: %s", err));
return (nil, nil, nil, 0, 0);
}
nlines := 0;
nl := len sym.src;
for(i := 0; i < nl; i++){
if((l := sym.src[i].stop.line) > nlines)
nlines = l;
}
name := sym.src[0].start.file;
nl0 := 2*(nlines+1);
line := array[nl0] of int;
for(i = 0; i < nl0; i++)
line[i] = 0;
nf := len sym.fns;
fun := array[nf] of Funprof;
for(i = 0; i < nf; i++){
fun[i].name = sym.fns[i].name;
# src seems to be always nil
# fun[i].file = sym.fns[i].src.start.file;
# fun[i].line = (sym.fns[i].src.start.line+sym.fns[i].src.stop.line)/2;
src := sym.pctosrc(sym.fns[i].offset);
if(src != nil)
fun[i].line = src.start.line;
else
fun[i].line = 0;
fun[i].count = fun[i].counte = 0;
}
buf := array[32] of byte;
# pc := 0;
ktot := ktot1 := 0;
fi := 0;
# for(i=0; i < nl; i++) sys->print("%d -> %d\n", i, sym.pctosrc(i).start.line);
while((m := sys->read(fd, buf, len buf)) > 0){
(nw, lw) := sys->tokenize(string buf[0:m], " ");
if(nw != 2){
error0("bad histogram data");
return (nil, nil, nil, 0, 0);
}
pc := int hd lw;
f := int hd tl lw;
if(pc == 0){
ktot = f;
continue;
}
if(pc == 1){
ktot1 = f;
continue;
}
pc -= 2;
t := pc&1;
pc /= 2;
rpc := pc-1;
src := sym.pctosrc(rpc);
if(src == nil)
continue;
l1 := src.start.line;
l2 := src.stop.line;
if(l1 == 0 || l2 == 0)
continue;
if((nl = l2-l1+1) == 1)
line[2*l1+t] += f;
else{
q := f/nl;
r := f-q*nl;
for(i = l1; i <= l2; i++)
line[2*i+t] += q+(r-->0);
}
if(fi < nf){
if(rpc >= sym.fns[fi].offset && rpc < sym.fns[fi].stoppc){
if(t)
fun[fi].counte += f;
else
fun[fi].count += f;
}
else{
while(fi < nf && rpc >= sym.fns[fi].stoppc)
fi++;
# fi++;
if(fi >= nf && f != 0)
error0(sys->sprint("bad fn index"));
if(fi < nf){
if(t)
fun[fi].counte += f;
else
fun[fi].count += f;
}
}
}
# sys->print("pc %d count %d l1 %d l2 %d\n", rpc, f, l1, l2);
}
return (name, line, fun, ktot, ktot1);
}
memshow(p: Prof, v: int): int
{
i: int;
cleare();
tot := p.total;
if(p.total == 0 && p.totals[0] == 0)
return 0;
verbose := v&VERBOSE;
fullhdr := v&FULLHDR;
for(ml := p.mods; ml != nil; ml = tl ml){
mp := hd ml;
if(mp.total == 0 && mp.totals[0] == 0)
continue;
if((b := getb(mp.path)) == nil)
continue;
sys->print("\nModule: %s(%s)\n\n", mp.name, mp.path);
line := mp.linetab;
if(v&LINE){
bio := bufio->open(b, Bufio->OREAD);
if(bio == nil){
error(sys->sprint("cannot open %s for reading", b));
continue;
}
i = 1;
ll := len line/2;
while((s := bio.gets('\n')) != nil){
f := g := 0;
if(i < ll){
f = line[2*i];
g = line[2*i+1];
}
if(verbose || f != 0 || g != 0){
if(fullhdr)
sys->print("%s:", b);
sys->print("%d\t%d\t%d\t%s", i, f, g, s);
}
i++;
}
if(v&(FUNCTION|MODULE))
sys->print("\n");
}
if(v&FUNCTION){
fun := mp.funtab;
nf := len fun;
for(i = 0; i < nf; i++)
if(verbose || fun[i].count != 0 || fun[i].counte != 0){
if(fullhdr)
sys->print("%s:", b);
sys->print("%d\t%d\t%d\t%s()\n", fun[i].line, fun[i].count, fun[i].counte, fun[i].name);
}
if(v&MODULE)
sys->print("\n");
}
if(v&MODULE)
sys->print("Module totals\t%d\t%d\n\n", mp.total, mp.totals[0]);
}
if(p.mods != nil && tl p.mods != nil)
sys->print("Grand totals\t%d\t%d\n\n", p.total, p.totals[0]);
return 0;
}