ref: 9861f1a92b373a16939fd6f3c167e5dad9f253d3
dir: /sys/src/cmd/spin/msc_tcl.c/
/***** spin: msc_tcl.c *****/
/*
* This file is part of the public release of Spin. It is subject to the
* terms in the LICENSE file that is included in this source directory.
* Tool documentation is available at http://spinroot.com
*/
#include <stdlib.h>
#include "spin.h"
#include "version.h"
#define MW 500 /* page width */
#define RH 100 /* right margin */
#define WW 80 /* distance between process lines */
#define HH 12 /* vertical distance between steps */
#define LW 2 /* line width of message arrows */
#define RVC "darkred" /* rendezvous arrows */
#define MPC "darkblue" /* asynchronous message passing arrow */
#define GRC "lightgrey" /* grid lines */
static int MH = 600; /* anticipated page-length */
static FILE *pfd;
static char **I; /* initial procs */
static int *D,*R; /* maps between depth (stepnr) and ldepth (msc-step) */
static short *M; /* x location of each box at index y */
static short *T; /* y index of match for each box at index y */
static char **L; /* text labels */
static int ProcLine[256]; /* active processes */
static int UsedLine[256]; /* process line has at least one entry */
static int ldepth = 1;
static int maxx, TotSteps = 2*4096; /* max nr of steps for simulation output */
static float Scaler = (float) 1.0;
static int xscale = 2;
static int yscale = 1;
static int no_box;
extern int ntrail, s_trail, pno, depth;
extern Symbol *oFname;
extern void putpostlude(void);
static void putpages(void);
static void
psline(int x0, int y0, int x1, int y1, char *color)
{ char *side = "last";
if (x0 == x1) /* gridline */
{ fprintf(pfd, ".c create line %d %d %d %d -fill %s -tags grid -width 1 \n",
xscale*(x0+1)*WW-20, yscale*y0+20,
xscale*(x1+1)*WW-20, yscale*y1+20, color);
fprintf(pfd, ".c lower grid\n");
} else
{ int xm = xscale*(x0+1)*WW + (xscale*(x1 - x0)*WW)/2 - 20; /* mid x */
if (y1 - y0 <= HH+20)
{ y1 = y0+20; /* close enough to horizontal - looks better */
}
fprintf(pfd, ".c create line %d %d %d %d -fill %s -tags mesg -width %d\n",
xscale*(x0+1)*WW-20, yscale*y0+20+10,
xm, yscale*y0+20+10, color, LW);
if (y1 != y0+20)
{ fprintf(pfd, ".c create line %d %d %d %d -fill %s -tags mesg -width %d\n",
xm, yscale*y0+20+10,
xm, yscale*y1+20-10, color, LW);
}
fprintf(pfd, ".c create line %d %d %d %d -fill %s -width %d ",
xm, yscale*y1+20-10,
xscale*(x1+1)*WW-20, yscale*y1+20-10, color, LW);
if (strcmp(color, RVC) == 0)
{ side = "both";
}
fprintf(pfd, "-arrow %s -arrowshape {5 5 5} -tags mesg\n", side);
fprintf(pfd, ".c raise mesg\n");
}
}
static void
colbox(int ix, int iy, int w, int h_unused, char *color)
{ int x = ix*WW;
int y = iy*HH;
if (ix < 0 || ix > 255)
{ fatal("msc_tcl: unexpected\n", (char *) 0);
}
if (ProcLine[ix] < iy)
{ /* if (ProcLine[ix] > 0) */
{ psline(ix-1, ProcLine[ix]*HH+HH+4,
ix-1, iy*HH-HH, GRC);
}
fprintf(pfd, "# ProcLine[%d] from %d to %d (Used %d nobox %d)\n",
ix, ProcLine[ix], iy, UsedLine[ix], no_box);
ProcLine[ix] = iy;
} else
{ fprintf(pfd, "# ProcLine[%d] stays at %d (Used %d nobox %d)\n",
ix, ProcLine[ix], UsedLine[ix], no_box);
}
if (UsedLine[ix])
{ no_box = 2;
}
if (strcmp(color, "black") == 0)
{ if (no_box == 0) /* shadow */
{ fprintf(pfd, ".c create rectangle %d %d %d %d -fill black\n",
xscale*x-(xscale*4*w/3)-20+4, (yscale*y-10)+20+2,
xscale*x+(xscale*4*w/3)-20, (yscale*y+10)+20+2);
}
} else
{ if (no_box == 0) /* box with outline */
{ fprintf(pfd, ".c create rectangle %d %d %d %d -fill ivory\n",
xscale*x-(xscale*4*w/3)-20, (yscale*y-10)+20,
xscale*x+(xscale*4*w/3)-20, (yscale*y+10)+20);
UsedLine[ix]++;
} else /* no outline */
{ fprintf(pfd, ".c create rectangle %d %d %d %d -fill white -width 0\n",
xscale*x-(xscale*4*w/3)-20, (yscale*y-10)+20,
xscale*x+(xscale*4*w/3)-20, (yscale*y+10)+20);
} }
if (no_box > 0)
{ no_box--;
}
}
static void
stepnumber(int i)
{ int y = (yscale*i*HH) + 20;
fprintf(pfd, ".c create text %d %d -fill #eef -text \"%d\"\n",
-10+(xscale*WW)/2, y, i);
/* horizontal dashed grid line */
fprintf(pfd, ".c create line %d %d %d %d -fill #eef -dash {6 4}\n",
-20+WW*xscale, y, (maxx+1)*WW*xscale-20, y);
}
static void
spitbox(int ix, int y, char *s)
{ float bw; /* box width */
char d[256], *t, *z;
int a, i, x = ix+1;
char *color = "black";
if (y > 0)
{ stepnumber(y);
}
bw = (float)1.8*(float)strlen(s); /* guess at default font width */
colbox(x, y, (int) (bw+1.0), 5, "black");
if (s[0] == '~')
{ switch (s[1]) {
default :
case 'R': color = "red"; break;
case 'B': color = "blue"; break;
case 'G': color = "green"; break;
}
s += 2;
} else if (strchr(s, '!'))
{ color = "ivory";
} else if (strchr(s, '?'))
{ color = "azure";
} else
{ color = "pink";
if (sscanf(s, "%d:%250s", &a, d) == 2
&& a >= 0 && a < TotSteps)
{ if (!I[a] || strlen(I[a]) <= strlen(s))
{ I[a] = (char *) emalloc((int) strlen(s)+1);
}
strcpy(I[a], s);
} }
colbox(x, y, (int) bw, 4, color);
z = t = (char *) emalloc(2*strlen(s)+1);
for (i = 0; i < (int) strlen(s); i++)
{ if (s[i] == '\n')
{ continue;
}
if (s[i] == '[' || s[i] == ']')
{ *t++ = '\\';
}
*t++ = s[i];
}
fprintf(pfd, ".c create text %d %d -text \"%s\"\n",
xscale*x*WW-20, yscale*y*HH+20, z);
}
static void
putpages(void)
{ int i, lasti=0; float nmh;
if (maxx*xscale*WW > MW-RH/2)
{ Scaler = (float) (MW-RH/2) / (float) (maxx*xscale*WW);
nmh = (float) MH; nmh /= Scaler; MH = (int) nmh;
fprintf(pfd, "# Scaler %f, MH %d\n", Scaler, MH);
}
if (ldepth >= TotSteps)
{ ldepth = TotSteps-1;
}
/* W: (maxx+2)*xscale*WW */
/* H: ldepth*HH*yscale+50 */
fprintf(pfd, "wm title . \"scenario\"\n");
fprintf(pfd, "wm geometry . %dx600+650+100\n", (maxx+2)*xscale*WW);
fprintf(pfd, "canvas .c -width 800 -height 800 \\\n");
fprintf(pfd, " -scrollregion {0c -1c 30c 100c} \\\n");
fprintf(pfd, " -xscrollcommand \".hscroll set\" \\\n");
fprintf(pfd, " -yscrollcommand \".vscroll set\" \\\n");
fprintf(pfd, " -bg white -relief raised -bd 2\n");
fprintf(pfd, "scrollbar .vscroll -relief sunken ");
fprintf(pfd, " -command \".c yview\"\n");
fprintf(pfd, "scrollbar .hscroll -relief sunken -orient horiz ");
fprintf(pfd, " -command \".c xview\"\n");
fprintf(pfd, "pack append . \\\n");
fprintf(pfd, " .vscroll {right filly} \\\n");
fprintf(pfd, " .hscroll {bottom fillx} \\\n");
fprintf(pfd, " .c {top expand fill}\n");
fprintf(pfd, ".c yview moveto 0\n");
for (i = TotSteps-1; i >= 0; i--)
{ if (I[i])
{ spitbox(i, -1, I[i]);
} }
for (i = 0; i <= ldepth; i++)
{ if (!M[i] && !L[i])
{ continue; /* no box */
}
if (T[i] > 0) /* arrow */
{ if (T[i] == i) /* rv handshake */
{ psline( M[lasti], lasti*HH,
M[i], i*HH, RVC);
} else
{ psline( M[i], i*HH,
M[T[i]], T[i]*HH, MPC);
} }
if (L[i])
{ spitbox(M[i], i, L[i]);
lasti = i;
} }
}
static void
putbox(int x)
{
if (ldepth >= TotSteps)
{ fprintf(stderr, "max length of %d steps exceeded - ps file truncated\n",
TotSteps);
putpostlude();
}
M[ldepth] = x;
if (x > maxx)
{ maxx = x;
fprintf(pfd, "# maxx %d\n", x);
}
}
/* functions called externally: */
extern int WhatSeed(void);
void
putpostlude(void)
{ char cmd[512];
putpages();
fprintf(pfd, ".c lower grid\n");
fprintf(pfd, ".c raise mesg\n");
fclose(pfd);
fprintf(stderr, "seed used: -n%d\n", WhatSeed());
sprintf(cmd, "wish -f %s.tcl &", oFname?oFname->name:"msc");
fprintf(stderr, "%s\n", cmd);
(void) unlink("pan.pre");
exit (system(cmd));
}
void
putprelude(void)
{ char snap[256]; FILE *fd;
sprintf(snap, "%s.tcl", oFname?oFname->name:"msc");
if (!(pfd = fopen(snap, MFLAGS)))
{ fatal("cannot create file '%s'", snap);
}
if (s_trail)
{ if (ntrail)
sprintf(snap, "%s%d.trail", oFname?oFname->name:"msc", ntrail);
else
sprintf(snap, "%s.trail", oFname?oFname->name:"msc");
if (!(fd = fopen(snap, "r")))
{ snap[strlen(snap)-2] = '\0';
if (!(fd = fopen(snap, "r")))
fatal("cannot open trail file", (char *) 0);
}
TotSteps = 1;
while (fgets(snap, 256, fd)) TotSteps++;
fclose(fd);
}
TotSteps *= 2;
R = (int *) emalloc(TotSteps * sizeof(int));
D = (int *) emalloc(TotSteps * sizeof(int));
M = (short *) emalloc(TotSteps * sizeof(short));
T = (short *) emalloc(TotSteps * sizeof(short));
L = (char **) emalloc(TotSteps * sizeof(char *));
I = (char **) emalloc(TotSteps * sizeof(char *));
}
void
putarrow(int from, int to)
{
/* from rv if from == to */
/* which means that D[from] == D[to] */
/* which means that T[x] == x */
if (from < TotSteps
&& to < TotSteps
&& D[from] < TotSteps)
{ T[D[from]] = D[to];
}
}
void
pstext(int x, char *s)
{ char *tmp = emalloc((int) strlen(s)+1);
strcpy(tmp, s);
if (depth == 0)
{ I[x] = tmp;
} else
{ if (depth >= TotSteps || ldepth >= TotSteps)
{ fprintf(stderr, "spin: error: max nr of %d steps exceeded\n",
TotSteps);
fatal("use -uN to limit steps", (char *) 0);
}
putbox(x);
D[depth] = ldepth;
R[ldepth] = depth;
L[ldepth] = tmp;
ldepth += 2;
}
}
void
dotag(FILE *fd, char *s)
{ extern int columns, notabs; extern RunList *X;
int i = (!strncmp(s, "MSC: ", 5))?5:0;
int pid = s_trail ? pno : (X?X->pid:0);
if (columns == 2)
{ pstext(pid, &s[i]);
} else
{ if (!notabs)
{ printf(" ");
for (i = 0; i <= pid; i++)
{ printf(" ");
} }
fprintf(fd, "%s", s);
fflush(fd);
}
}