ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc
dir: /sys/src/cmd/flambe.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include <bio.h>
#include <mach.h>
typedef struct Data Data;
struct Data
{
ushort down;
ushort right;
ulong pc;
ulong count;
uvlong time;
uint rec;
};
enum { Datasz = 2+2+4+4+8 };
Data* data;
long ndata;
uvlong cyclefreq;
void
syms(char *cout)
{
Fhdr f;
int fd;
if((fd = open(cout, 0)) < 0)
sysfatal("%r");
if(!crackhdr(fd, &f))
sysfatal("can't read text file header: %r");
if(f.type == FNONE)
sysfatal("text file not an a.out");
if(syminit(fd, &f) < 0)
sysfatal("syminit: %r");
close(fd);
}
#define GET2(p) (u16int)(p)[1] | (u16int)(p)[0]<<8
#define GET4(p) (u32int)(p)[3] | (u32int)(p)[2]<<8 | (u32int)(p)[1]<<16 | (u32int)(p)[0]<<24
#define GET8(p) (u64int)(p)[7] | (u64int)(p)[6]<<8 | (u64int)(p)[5]<<16 | (u64int)(p)[4]<<24 | \
(u64int)(p)[3]<<32 | (u64int)(p)[2]<<40 | (u64int)(p)[1]<<48 | (u64int)(p)[0]<<56
void
datas(char *dout)
{
int fd;
Dir *d;
int i;
uchar hdr[3+1+8], *buf, *p;
if((fd = open(dout, 0)) < 0){
perror(dout);
exits("open");
}
d = dirfstat(fd);
if(d == nil){
perror(dout);
exits("stat");
}
d->length -= sizeof hdr;
ndata = d->length/Datasz;
data = malloc(ndata*sizeof(Data));
buf = malloc(d->length);
if(buf == 0 || data == 0)
sysfatal("malloc");
if(read(fd, hdr, sizeof hdr) != sizeof hdr)
sysfatal("read data header: %r");
if(memcmp(hdr, "pr\x0f", 3) != 0)
sysfatal("bad magic");
cyclefreq = GET8(hdr+4);
if(readn(fd, buf, d->length) != d->length)
sysfatal("data file read: %r");
for(p = buf, i = 0; i < ndata; i++){
data[i].down = GET2(p); p += 2;
data[i].right = GET2(p); p += 2;
data[i].pc = GET4(p); p += 4;
data[i].count = GET4(p); p += 4;
data[i].time = GET8(p); p += 8;
}
free(buf);
free(d);
close(fd);
}
char*
name(ulong pc)
{
Symbol s;
static char buf[16];
if (findsym(pc, CTEXT, &s))
return(s.name);
snprint(buf, sizeof(buf), "#%lux", pc);
return buf;
}
int rowh;
Image **cols;
int ncols;
uvlong total;
Rectangle *clicks;
void
gencols(void)
{
int i, h;
ulong col, step;
h = Dy(screen->r) / rowh + 1;
if(ncols == h)
return;
for(i = 0; i < ncols; i++)
freeimage(cols[i]);
free(cols);
ncols = h;
cols = malloc(sizeof(Image*)*ncols);
col = DRed;
step = (0xFF/ncols)<<16;
for(i = 0; i < ncols; i++){
cols[i] = allocimagemix(display, DWhite, col);
col += step;
}
}
Image*
colfor(int h)
{
if(h % 2 == 0)
h += (ncols/3);
return cols[h % ncols];
}
void
onhover(int i)
{
Rectangle r;
char buf[128];
r = screen->r;
r.max.y = r.min.y + (font->height+2)*2;
draw(screen, r, display->white, nil, ZP);
string(screen, r.min, display->black, ZP, font, name(data[i].pc));
r.min.y += font->height + 1;
snprint(buf, sizeof buf, "Time: %.8f(s), Calls: %lud", (double)data[i].time/cyclefreq, data[i].count);
string(screen, r.min, display->black, ZP, font, buf);
flushimage(display, 1);
}
void
graph(int i, int x, int h)
{
Rectangle r, r2;
if(i >= ndata)
sysfatal("corrupted profile data");
r.min = (Point){x, screen->r.max.y - rowh*h};
r.max = (Point){
x + ((double)data[i].time * Dx(screen->r)) / total,
r.min.y + rowh
};
clicks[i] = r;
if(Dx(r) > 6){
draw(screen, r, colfor(h), nil, ZP);
r2 = r;
r2.min.x = r2.max.x - 2;
draw(screen, r2, display->black, nil, ZP);
screen->clipr = r;
r2.min = r.min;
r2.min.x += 4;
string(screen, r2.min, display->black, ZP, font, name(data[i].pc));
screen->clipr = screen->r;
}
if(data[i].right != 0xFFFF)
graph(data[i].right, r.max.x, h);
if(data[i].down != 0xFFFF)
graph(data[i].down, x, h + 1);
}
void
redraw(int i)
{
total = data[i].time;
memset(clicks, 0, ndata * sizeof(Rectangle));
gencols();
draw(screen, screen->r, display->white, nil, ZP);
graph(i, screen->r.min.x, 1);
flushimage(display, 1);
}
enum
{
Ckey,
Cmouse,
Cresize,
Numchan,
};
void
usage(void)
{
fprint(2, "%s: $O.out prof\n", argv0);
exits("usage");
}
/* syminit has a Biobuf on the stack */
mainstacksize = 64*1024;
void
threadmain(int argc, char **argv)
{
Mousectl *mctl;
Keyboardctl *kctl;
Mouse m;
Rune r;
vlong t;
int i;
Alt a[Numchan+1] = {
[Ckey] = {nil, &r, CHANRCV},
[Cmouse] = {nil, &m, CHANRCV },
[Cresize] = {nil, nil, CHANRCV},
{nil, nil, CHANEND},
};
ARGBEGIN{
default:
usage();
break;
}ARGEND;
if(argc != 2)
usage();
syms(argv[0]);
datas(argv[1]);
for(int i = 1; i < ndata; i++){
if((t = data[i].time) < 0)
data[i].time = t + data[0].time;
}
if(initdraw(nil, nil, "flambe") < 0)
sysfatal("initdraw: %r");
if((kctl = initkeyboard(nil)) == nil)
sysfatal("initkeyboard: %r");
a[Ckey].c = kctl->c;
if((mctl = initmouse(nil, screen)) == nil)
sysfatal("initmouse: %r");
a[Cmouse].c = mctl->c;
a[Cresize].c = mctl->resizec;
rowh = font->height + 2;
clicks = malloc(sizeof(Rectangle)*ndata);
redraw(1);
for(;;)
switch(alt(a)){
case Ckey:
switch(r){
case Kesc:
redraw(1);
break;
case Kdel:
case 'q':
threadexitsall(nil);
default:
break;
}
break;
case Cmouse:
if(m.buttons == 4 || m.buttons == 16){
redraw(1);
break;
}
for(i = 0; i < ndata; i++){
if(!ptinrect(m.xy, clicks[i]))
continue;
switch(m.buttons){
case 0:
onhover(i);
break;
case 1: case 8:
redraw(i);
break;
}
break;
}
break;
case Cresize:
getwindow(display, Refnone);
redraw(1);
break;
}
}