64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/* $Header$ */
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static int bs;
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static char *bp;
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static char *bufp;
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static int sc;
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static int bufs;
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monitor(lowpc, highpc, buffer, bufsize, nfunc)
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int (*lowpc)(), (*highpc)();
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char *buffer;
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{
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long scale;
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if (lowpc == 0) {
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int fd;
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profil((char *) 0, 0, 0, 0);
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if ((fd = creat("mon.out", 0666)) < 0 || !bp) return;
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write(fd, bp, (int) bs);
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close(fd);
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return;
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}
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bs = bufsize << 1;
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bp = buffer;
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*(char **) buffer = (char *) lowpc;
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buffer += sizeof(char *);
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*(char **) buffer = (char *) highpc;
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buffer += sizeof(char *);
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*(int *) buffer = nfunc;
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buffer += sizeof(int);
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buffer += (sizeof (char *) + sizeof(long)) * nfunc;
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bufsize -= ((sizeof (char *) + sizeof(long)) * nfunc + 2 * sizeof(char *) + sizeof(int)) >> 1;
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if (bufsize < 0) return;
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scale = ((char *) highpc - (char *) lowpc) >> 1;
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if (bufsize < scale)
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scale = ((long) bufsize << 15) / scale;
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else scale = 0x8000;
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bufp = buffer;
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sc = scale << 1;
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bufs = bufsize << 1;
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profil(buffer, bufs, lowpc, sc);
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}
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moncontrol(mode)
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{
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profil(bufp, bufs, *(char **) bp, !mode ? 0 : sc);
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}
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#define NCOUNTS 300
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monstartup(lowpc, highpc)
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int (*lowpc)(), (*highpc)();
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{
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int sz = (((char *) highpc - (char *) lowpc + 7) & ~7);
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char *s, *sbrk();
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sz += NCOUNTS * (sizeof(long) + sizeof(char *)) + 2 * sizeof(char *) + sizeof(int);
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s = sbrk(sz);
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if ((int) s == -1) return;
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monitor(lowpc, highpc, s, sz >> 1, NCOUNTS);
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}
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