mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-12-13 21:51:09 +00:00
475 lines
12 KiB
C
475 lines
12 KiB
C
#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* bprint [ -c | -Idir... | -f | -b | -n ] [ file... ]
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* annotate listings of files with prof.out data
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*/
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#define NDIRS (sizeof dirs/sizeof dirs[0] - 1)
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#define NEW(p,a) ((p) = alloc(sizeof *(p)))
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#define newarray(m,n,a) alloc((m)*(n))
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#define NELEMS(a) ((int)(sizeof (a)/sizeof ((a)[0])))
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#define MAXTOKEN 64
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struct count { /* count data: */
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int x, y; /* source coordinate */
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int count; /* associated execution count */
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};
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char *progname;
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int number;
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char *dirs[20];
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int fcount;
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struct file { /* per-file prof.out data: */
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struct file *link; /* link to next file */
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char *name; /* file name */
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int size; /* size of counts[] */
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int count; /* counts[0..count-1] hold valid data */
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struct count *counts; /* count data */
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struct func { /* function data: */
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struct func *link; /* link to next function */
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char *name; /* function name */
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struct count count; /* total number of calls */
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struct caller { /* caller data: */
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struct caller *link; /* link to next caller */
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char *name; /* caller's name */
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char *file; /* call site: file, x, y */
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int x, y;
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int count; /* number of calls from this site */
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} *callers;
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} *funcs; /* list of functions */
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} *filelist;
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FILE *fp;
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extern int process(char *);
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extern int findfunc(char *, char *);
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extern int findcount(char *, int, int);
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void *alloc(unsigned);
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char *string(char *);
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int process(char *);
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void emitdata(char *);
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void printfile(struct file *, int);
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void printfuncs(struct file *, int);
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/* alloc - allocate n bytes or die */
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void *alloc(unsigned n) {
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void *new = malloc(n);
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assert(new);
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return new;
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}
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/* emitdata - write prof.out data to file */
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void emitdata(char *file) {
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FILE *fp;
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if (fp = fopen(file, "w")) {
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struct file *p;
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for (p = filelist; p; p = p->link) {
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int i;
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struct func *q;
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struct caller *r;
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fprintf(fp, "1\n%s\n", p->name);
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for (i = 0, q = p->funcs; q; i++, q = q->link)
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if (r = q->callers)
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for (i--; r; r = r->link)
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i++;
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fprintf(fp, "%d\n", i);
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for (q = p->funcs; q; q = q->link)
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if (q->count.count == 0 || !q->callers)
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fprintf(fp, "%s 1 %d %d %d ? ? 0 0\n", q->name, q->count.x,
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q->count.y, q->count.count);
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else
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for (r = q->callers; r; r = r->link)
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fprintf(fp, "%s 1 %d %d %d %s %s %d %d\n", q->name, q->count.x,
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q->count.y, r->count, r->name, r->file, r->x, r->y);
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fprintf(fp, "%d\n", p->count);
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for (i = 0; i < p->count; i++)
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fprintf(fp, "1 %d %d %d\n", p->counts[i].x,
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p->counts[i].y, p->counts[i].count);
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}
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fclose(fp);
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} else
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fprintf(stderr, "%s: can't create `%s'\n", progname, file);
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}
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/* openfile - open name for reading, searching -I directories */
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FILE *openfile(char *name) {
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int i;
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FILE *fp;
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if (*name != '/')
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for (i = 0; dirs[i]; i++) {
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char buf[200];
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sprintf(buf, "%s/%s", dirs[i], name);
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if (fp = fopen(buf, "r"))
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return fp;
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}
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return fopen(name, "r");
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}
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/* printfile - print annotated listing for p */
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void printfile(struct file *p, int nf) {
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int lineno;
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FILE *fp;
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char *s, buf[512];
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struct count *u = p->counts, *r, *uend;
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if (u == 0 || p->count <= 0)
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return;
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uend = &p->counts[p->count];
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if ((fp = openfile(p->name)) == NULL) {
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fprintf(stderr, "%s: can't open `%s'\n", progname, p->name);
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return;
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}
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if (nf)
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printf("%s%s:\n\n", nf == 1 ? "" : "\f", p->name);
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for (lineno = 1; fgets(buf, sizeof buf, fp); lineno++) {
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if (number)
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printf("%d\t", lineno);
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while (u < uend && u->y < lineno)
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u++;
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for (s = buf; *s; ) {
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char *t = s + 1;
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while (u < uend && u->y == lineno && u->x < s - buf)
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u++;
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if (isalnum(*s) || *s == '_')
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while (isalnum(*t) || *t == '_')
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t++;
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while (u < uend && u->y == lineno && u->x < t - buf) {
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printf("<%d>", u->count);
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for (r = u++; u < uend && u->x == r->x && u->y == r->y && u->count == r->count; u++)
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;
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}
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while (s < t)
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putchar(*s++);
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}
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if (*s)
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printf("%s", s);
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}
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fclose(fp);
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}
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/* printfuncs - summarize data for functions in p */
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void printfuncs(struct file *p, int nf) {
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struct func *q;
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if (nf)
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printf("%s:\n", p->name);
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for (q = p->funcs; q; q = q->link)
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if (fcount <= 1 || q->count.count == 0 || !q->callers)
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printf("%d\t%s\n", q->count.count, q->name);
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else {
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struct caller *r;
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for (r = q->callers; r; r = r->link)
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printf("%d\t%s\tfrom %s\tin %s:%d.%d\n", r->count, q->name, r->name,
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r->file, r->y, r->x + 1);
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}
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}
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/* string - save a copy of str, if necessary */
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char *string(char *str) {
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static struct string { struct string *link; char str[1]; } *list;
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struct string *p;
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for (p = list; p; p = p->link)
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if (strcmp(p->str, str) == 0)
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return p->str;
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p = (struct string *)alloc(strlen(str) + sizeof *p);
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strcpy(p->str, str);
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p->link = list;
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list = p;
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return p->str;
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}
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/* acaller - add caller and site (file,x,y) to callee's callers list */
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static void acaller(char *caller, char *file, int x, int y, int count, struct func *callee) {
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struct caller *q;
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assert(callee);
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for (q = callee->callers; q && (caller != q->name
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|| file != q->file || x != q->x || y != q->y); q = q->link)
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;
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if (!q) {
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struct caller **r;
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NEW(q, PERM);
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q->name = caller;
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q->file = file;
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q->x = x;
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q->y = y;
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q->count = 0;
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for (r = &callee->callers; *r && (strcmp(q->name, (*r)->name) > 0
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|| strcmp(q->file, (*r)->file) > 0 || q->y > (*r)->y || q->y > (*r)->y); r = &(*r)->link)
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;
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q->link = *r;
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*r = q;
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}
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q->count += count;
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}
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/* compare - return <0, 0, >0 if a<b, a==b, a>b, resp. */
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static int compare(struct count *a, struct count *b) {
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if (a->y == b->y)
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return a->x - b->x;
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return a->y - b->y;
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}
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/* findfile - return file name's file list entry, or 0 */
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static struct file *findfile(char *name) {
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struct file *p;
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for (p = filelist; p; p = p->link)
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if (p->name == name)
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return p;
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return 0;
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}
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/* afunction - add function name and its data to file's function list */
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static struct func *afunction(char *name, char *file, int x, int y, int count) {
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struct file *p = findfile(file);
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struct func *q;
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assert(p);
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for (q = p->funcs; q && name != q->name; q = q->link)
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;
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if (!q) {
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struct func **r;
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NEW(q, PERM);
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q->name = name;
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q->count.x = x;
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q->count.y = y;
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q->count.count = 0;
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q->callers = 0;
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for (r = &p->funcs; *r && compare(&q->count, &(*r)->count) > 0; r = &(*r)->link)
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;
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q->link = *r;
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*r = q;
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}
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q->count.count += count;
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return q;
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}
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/* apoint - append execution point i to file's data */
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static void apoint(int i, char *file, int x, int y, int count) {
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struct file *p = findfile(file);
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assert(p);
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if (i >= p->size) {
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int j;
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if (p->size == 0) {
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p->size = i >= 200 ? 2*i : 200;
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p->counts = newarray(p->size, sizeof *p->counts, PERM);
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} else {
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struct count *new;
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p->size = 2*i;
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new = newarray(p->size, sizeof *new, PERM);
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for (j = 0; j < p->count; j++)
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new[j] = p->counts[j];
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p->counts = new;
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}
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for (j = p->count; j < p->size; j++) {
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static struct count z;
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p->counts[j] = z;
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}
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}
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p->counts[i].x = x;
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p->counts[i].y = y;
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p->counts[i].count += count;
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if (i >= p->count)
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p->count = i + 1;
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}
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/* findcount - return count associated with (file,x,y) or -1 */
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int findcount(char *file, int x, int y) {
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static struct file *cursor;
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if (cursor == 0 || cursor->name != file)
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cursor = findfile(file);
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if (cursor) {
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int l, u;
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struct count *c = cursor->counts;
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for (l = 0, u = cursor->count - 1; l <= u; ) {
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int k = (l + u)/2;
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if (c[k].y > y || c[k].y == y && c[k].x > x)
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u = k - 1;
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else if (c[k].y < y || c[k].y == y && c[k].x < x)
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l = k + 1;
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else
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return c[k].count;
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}
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}
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return -1;
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}
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/* findfunc - return count associated with function name in file or -1 */
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int findfunc(char *name, char *file) {
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static struct file *cursor;
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if (cursor == 0 || cursor->name != file)
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cursor = findfile(file);
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if (cursor) {
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struct func *p;
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for (p = cursor->funcs; p; p = p->link)
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if (p->name == name)
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return p->count.count;
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}
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return -1;
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}
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/* getd - read a nonnegative number */
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static int getd(void) {
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int c, n = 0;
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while ((c = getc(fp)) != EOF && (c == ' ' || c == '\n' || c == '\t'))
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;
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if (c >= '0' && c <= '9') {
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do
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n = 10*n + (c - '0');
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while ((c = getc(fp)) >= '0' && c <= '9');
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return n;
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}
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return -1;
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}
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/* getstr - read a string */
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static char *getstr(void) {
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int c;
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char buf[MAXTOKEN], *s = buf;
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while ((c = getc(fp)) != EOF && c != ' ' && c != '\n' && c != '\t')
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if (s - buf < (int)sizeof buf - 2)
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*s++ = c;
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*s = 0;
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return s == buf ? (char *)0 : string(buf);
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}
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/* gather - read prof.out data from fd */
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static int gather(void) {
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int i, nfiles, nfuncs, npoints;
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char *files[64];
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if ((nfiles = getd()) < 0)
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return 0;
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assert(nfiles < NELEMS(files));
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for (i = 0; i < nfiles; i++) {
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if ((files[i] = getstr()) == 0)
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return -1;
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if (!findfile(files[i])) {
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struct file *new;
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NEW(new, PERM);
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new->name = files[i];
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new->size = new->count = 0;
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new->counts = 0;
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new->funcs = 0;
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new->link = filelist;
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filelist = new;
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}
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}
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if ((nfuncs = getd()) < 0)
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return -1;
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for (i = 0; i < nfuncs; i++) {
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struct func *q;
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char *name, *file;
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int f, x, y, count;
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if ((name = getstr()) == 0 || (f = getd()) <= 0
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|| (x = getd()) < 0 || (y = getd()) < 0 || (count = getd()) < 0)
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return -1;
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q = afunction(name, files[f-1], x, y, count);
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if ((name = getstr()) == 0 || (file = getstr()) == 0
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|| (x = getd()) < 0 || (y = getd()) < 0)
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return -1;
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if (*name != '?')
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acaller(name, file, x, y, count, q);
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}
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if ((npoints = getd()) < 0)
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return -1;
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for (i = 0; i < npoints; i++) {
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int f, x, y, count;
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if ((f = getd()) < 0 || (x = getd()) < 0 || (y = getd()) < 0
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|| (count = getd()) < 0)
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return -1;
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if (f)
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apoint(i, files[f-1], x, y, count);
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}
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return 1;
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}
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/* process - read prof.out data from file */
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int process(char *file) {
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int more;
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if ((fp = fopen(file, "r")) != NULL) {
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struct file *p;
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while ((more = gather()) > 0)
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;
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fclose(fp);
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if (more < 0)
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return more;
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for (p = filelist; p; p = p->link)
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qsort(p->counts, p->count, sizeof *p->counts,
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(int (*)(const void *, const void *))
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compare);
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return 1;
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}
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return 0;
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}
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int main(int argc, char *argv[]) {
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int i;
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struct file *p;
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void (*f)(struct file *, int) = printfile;
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progname = argv[0];
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if ((i = process("prof.out")) <= 0) {
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fprintf(stderr, "%s: can't %s `%s'\n", progname,
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i == 0 ? "open" : "interpret", "prof.out");
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exit(1);
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}
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for (i = 1; i < argc && *argv[i] == '-'; i++)
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if (strcmp(argv[i], "-c") == 0) {
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emitdata("prof.out");
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exit(0);
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} else if (strcmp(argv[i], "-b") == 0)
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f = printfile;
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else if (strcmp(argv[i], "-f") == 0) {
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fcount++;
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f = printfuncs;
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} else if (strcmp(argv[i], "-n") == 0)
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number++;
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else if (strncmp(argv[i], "-I", 2) == 0) {
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int j;
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for (j = 0; j < NDIRS && dirs[j]; j++)
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;
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if (j < NDIRS)
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dirs[j] = &argv[i][2];
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else
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fprintf(stderr, "%s: too many -I options\n", progname);
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} else {
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fprintf(stderr, "usage: %s [ -c | -b | -n | -f | -Idir... ] [ file... ]\n", progname);
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exit(1);
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}
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for (p = filelist; p; p = p->link)
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qsort(p->counts, p->count, sizeof *p->counts,
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(int (*)(const void *, const void *))compare);
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if (i < argc) {
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int nf = i < argc - 1 ? 1 : 0;
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for ( ; i < argc; i++, nf ? nf++ : 0)
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if (p = findfile(string(argv[i])))
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(*f)(p, nf);
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else
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fprintf(stderr, "%s: no data for `%s'\n", progname, argv[i]);
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} else {
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int nf = filelist && filelist->link ? 1 : 0;
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for (p = filelist; p; p = p->link, nf ? nf++ : 0)
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(*f)(p, nf);
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}
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return 0;
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}
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