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[xemacs-hg @ 2003-02-13 09:57:04 by ben] profile updates profile.c: Major reworking. Keep track of new information -- total function timing (includes descendants), GC usage, total GC usage (includes descendants). New functions to be called appropriately from eval.c, alloc.c to keep track of this information. Keep track of when we're actually in a function vs. in its profile, for more accurate timing counts. Track profile overhead separately. Create new mechanism for specifying "internal sections" that are tracked just like regular Lisp functions and even appear in the backtrace if `backtrace-with-internal-sections' is non-nil (t by default for error-checking builds). Add some KKCC information for the straight (non-Elisp) hash table used by profile, which contains Lisp objects in its keys -- but not used yet. Remove old ad-hoc methods for tracking garbage collection, redisplay (which was incorrect anyway when Lisp was called within these sections). Don't record any tick info when blocking under MS Windows, since the timer there is in real time rather than in process time. Make `start-profiling', `stop-profiling' interactive. Be consistent wrt. recursive functions and functions currently on the stack when starting or stopping -- together these make implementing the `total' values extremely difficult. When we start profiling, we act as if we just entered all the functions currently on the stack. Likewise when exiting. Create vars in_profile for tracking time spent inside of profiling, and profiling_lock for setting exclusive access to the main hash table when reading from it or modifying it. (protects against getting screwed up by the signal handle going off at the same time. profile.h: New file. Create macros for declaring internal profiling sections. lisp.h: Move profile-related stuff to profile.h. alloc.c: Keep track of total consing, for profile. Tell profile when we are consing. Use new profile-section method for noting garbage-collection. alloc.c: Abort if we attempt to call the allocator reentrantly. backtrace.h, eval.c: Add info for use by profile in the backtrace frame and transfer PUSH_BACKTRACE/POP_BACKTRACE from eval.c, for use with profile. elhash.c: Author comment. eval.c, lisp.h: New Lisp var `backtrace-with-internal-sections'. Set to t when error-checking is on. eval.c: When unwinding, eval.c: Report to profile when we are about-to-call and just-called wrt. a function. alloc.c, eval.c: Allow for "fake" backtrace frames, for internal sections (used by profile and `backtrace-with-internal-sections'. event-Xt.c, event-gtk.c, event-msw.c, event-tty.c: Record when we are actually blocking on an event, for profile's sake. event-stream.c: Record internal profiling sections for getting, dispatching events. extents.c: Record internal profiling sections for map_extents. hash.c, hash.h: Add pregrow_hash_table_if_necessary(). (Used in profile code since the signal handler is the main grower but can't allow a realloc(). We make sure, at critical points, that the table is large enough.) lread.c: Create internal profiling sections for `load' (which may be triggered internally by autoload, etc.). redisplay.c: Remove old profile_redisplay_flag. Use new macros to declare internal profiling section for redisplay. text.c: Use new macros to declare internal profiling sections for char-byte conversion and internal-external conversion. SEMI-UNRELATED CHANGES: ----------------------- text.c: Update the long comments.
author ben
date Thu, 13 Feb 2003 09:57:08 +0000
parents b39c14581166
children 49316578f12d
line wrap: on
line source

/*
Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)

Permission to use, copy, modify, and distribute this material 
for any purpose and without fee is hereby granted, provided 
that the above copyright notice and this permission notice 
appear in all copies, and that the name of Bellcore not be 
used in advertising or publicity pertaining to this 
material without the specific, prior written permission 
of an authorized representative of Bellcore.  BELLCORE 
MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY 
OF THIS MATERIAL FOR ANY PURPOSE.  IT IS PROVIDED "AS IS", 
WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
*/

#define NEWLINE_CHAR '\n'
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>

static void
output64chunk(int c1, int c2, int c3, int pads, FILE *outfile);

static signed char basis_64[] =
   "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

static signed char index_64[128] = {
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
    52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1,
    -1, 0, 1, 2,  3, 4, 5, 6,  7, 8, 9,10, 11,12,13,14,
    15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,
    -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
    41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1
};

#define char64(c)  (((c) < 0 || (c) > 127) ? -1 : index_64[(c)])

/*
char64(c)
char c;
{
    char *s = (char *) strchr(basis_64, c);
    if (s) return(s-basis_64);
    return(-1);
}
*/

/* the following gets a character, but fakes it properly into two chars if there's a newline character */
static int InNewline=0;

static int
nextcharin (FILE *infile, int PortableNewlines)
{
    int c;

#ifndef NEWLINE_CHAR
    return(getc(infile));
#else
    if (!PortableNewlines) return(getc(infile));
    if (InNewline) {
        InNewline = 0;
        return(10); /* LF */
    }
    c = getc(infile);
    if (c == NEWLINE_CHAR) {
        InNewline = 1;
        return(13); /* CR */
    }
    return(c);
#endif
}

static void
to64(FILE *infile, FILE *outfile, int PortableNewlines) 
{
    int c1, c2, c3, ct=0;
    InNewline = 0; /* always reset it */
    while ((c1 = nextcharin(infile, PortableNewlines)) != EOF) {
        c2 = nextcharin(infile, PortableNewlines);
        if (c2 == EOF) {
            output64chunk(c1, 0, 0, 2, outfile);
        } else {
            c3 = nextcharin(infile, PortableNewlines);
            if (c3 == EOF) {
                output64chunk(c1, c2, 0, 1, outfile);
            } else {
                output64chunk(c1, c2, c3, 0, outfile);
            }
        }
        ct += 4;
        if (ct > 71) {
            putc('\n', outfile);
            ct = 0;
        }
    }
    if (ct) putc('\n', outfile);
    fflush(outfile);
}

static void
output64chunk(int c1, int c2, int c3, int pads, FILE *outfile)
{
    putc(basis_64[c1>>2], outfile);
    putc(basis_64[((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)], outfile);
    if (pads == 2) {
        putc('=', outfile);
        putc('=', outfile);
    } else if (pads) {
        putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
        putc('=', outfile);
    } else {
        putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
        putc(basis_64[c3 & 0x3F], outfile);
    }
}

static int
PendingBoundary(char *s, char **Boundaries, int *BoundaryCt)
{
    int i, len;

    if (s[0] != '-' || s[1] != '-') return(0);


    for (i=0; i < *BoundaryCt; ++i) {
	len = strlen(Boundaries[i]);
        if (!strncmp(s, Boundaries[i], len)) {
            if (s[len] == '-' && s[len+1] == '-') *BoundaryCt = i;
            return(1);
        }
    }
    return(0);
}

/* If we're in portable newline mode, we have to convert CRLF to the 
    local newline convention on output */

static int CRpending = 0;

#ifdef NEWLINE_CHAR
static void
almostputc(int c, FILE *outfile, int PortableNewlines)
{
    if (CRpending) {
        if (c == 10) {
            putc(NEWLINE_CHAR, outfile);
            CRpending = 0;
        } else {
            putc(13, outfile);
	    if (c != 13) {
            	putc(c, outfile);
		CRpending = 0;
	    }
        }
    } else {
        if (PortableNewlines && c == 13) {
            CRpending = 1;
        } else {
            putc(c, outfile);
        }
    }
}
#else
static void
almostputc(int c, FILE *outfile, int PortableNewlines)
{
    putc(c, outfile);
}
#endif

static void
from64(FILE *infile, FILE *outfile,
       char **boundaries, int *boundaryct, int PortableNewlines) 
{
    int c1, c2, c3, c4;
    int newline = 1, DataDone = 0;

    /* always reinitialize */
    CRpending = 0;
    while ((c1 = getc(infile)) != EOF) {
        if (isspace(c1)) {
            if (c1 == '\n') {
                newline = 1;
            } else {
                newline = 0;
            }
            continue;
        }
        if (newline && boundaries && c1 == '-') {
            char Buf[200];
            /* a dash is NOT base 64, so all bets are off if NOT a boundary */
            ungetc(c1, infile);
            fgets(Buf, sizeof(Buf), infile);
            if (boundaries
                 && (Buf[0] == '-')
                 && (Buf[1] == '-')
                 && PendingBoundary(Buf, boundaries, boundaryct)) {
                return;
            }
            fprintf(stderr, "Ignoring unrecognized boundary line: %s\n", Buf);
            continue;
        }
        if (DataDone) continue;
        newline = 0;
        do {
            c2 = getc(infile);
        } while (c2 != EOF && isspace(c2));
        do {
            c3 = getc(infile);
        } while (c3 != EOF && isspace(c3));
        do {
            c4 = getc(infile);
        } while (c4 != EOF && isspace(c4));
        if (c2 == EOF || c3 == EOF || c4 == EOF) {
            fprintf(stderr, "Warning: base64 decoder saw premature EOF!\n");
            return;
        }
        if (c1 == '=' || c2 == '=') {
            DataDone=1;
            continue;
        }
        c1 = char64(c1);
        c2 = char64(c2);
        almostputc(((c1<<2) | ((c2&0x30)>>4)), outfile, PortableNewlines);
        if (c3 == '=') {
            DataDone = 1;
        } else {
            c3 = char64(c3);
            almostputc((((c2&0XF) << 4) | ((c3&0x3C) >> 2)), outfile, PortableNewlines);
            if (c4 == '=') {
                DataDone = 1;
            } else {
                c4 = char64(c4);
                almostputc((((c3&0x03) <<6) | c4), outfile, PortableNewlines);
            }
        }
    }
    if (CRpending) putc(13, outfile); /* Don't drop a lone trailing char 13 */
}

static signed char basis_hex[] = "0123456789ABCDEF";
static signed char index_hex[128] = {
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
     0, 1, 2, 3,  4, 5, 6, 7,  8, 9,-1,-1, -1,-1,-1,-1,
    -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1
};

/* The following version generated complaints on Solaris. */
/* #define hexchar(c)  (((c) < 0 || (c) > 127) ? -1 : index_hex[(c)])  */
/*  Since we're no longer ever calling it with anything signed, this should work: */
#define hexchar(c)  (((c) > 127) ? -1 : index_hex[(c)])

/*
hexchar(c)
char c;
{
    char *s;
    if (islower(c)) c = toupper(c);
    s = (char *) strchr(basis_hex, c);
    if (s) return(s-basis_hex);
    return(-1);
}
*/

static void
toqp(FILE *infile, FILE *outfile) 
{
    int c, ct=0, prevc=255;
    while ((c = getc(infile)) != EOF) {
        if ((c < 32 && (c != '\n' && c != '\t'))
             || (c == '=')
             || (c >= 127)
             /* Following line is to avoid single periods alone on lines,
               which messes up some dumb smtp implementations, sigh... */
             || (ct == 0 && c == '.')) {
            putc('=', outfile);
            putc(basis_hex[c>>4], outfile);
            putc(basis_hex[c&0xF], outfile);
            ct += 3;
            prevc = 'A'; /* close enough */
        } else if (c == '\n') {
            if (prevc == ' ' || prevc == '\t') {
                putc('=', outfile); /* soft & hard lines */
                putc(c, outfile);
            }
            putc(c, outfile);
            ct = 0;
            prevc = c;
        } else {
            if (c == 'F' && prevc == '\n') {
                /* HORRIBLE but clever hack suggested by MTR for sendmail-avoidance */
                c = getc(infile);
                if (c == 'r') {
                    c = getc(infile);
                    if (c == 'o') {
                        c = getc(infile);
                        if (c == 'm') {
                            c = getc(infile);
                            if (c == ' ') {
                                /* This is the case we are looking for */
                                fputs("=46rom", outfile);
                                ct += 6;
                            } else {
                                fputs("From", outfile);
                                ct += 4;
                            }
                        } else {
                            fputs("Fro", outfile);
                            ct += 3;
                        }
                    } else {
                        fputs("Fr", outfile);
                        ct += 2;
                    }
                } else {
                    putc('F', outfile);
                    ++ct;
                }
                ungetc(c, infile);
                prevc = 'x'; /* close enough -- printable */
            } else { /* END horrible hack */
                putc(c, outfile);
                ++ct;
                prevc = c;
            }
        }
        if (ct > 72) {
            putc('=', outfile);
            putc('\n', outfile);
            ct = 0;
            prevc = '\n';
        }
    }
    if (ct) {
        putc('=', outfile);
        putc('\n', outfile);
    }
}

static void
fromqp(FILE *infile, FILE *outfile, char **boundaries, int *boundaryct) 
{
    int c1, c2;
    int sawnewline = 1, neednewline = 0;
    /* The neednewline hack is necessary because the newline leading into 
      a multipart boundary is part of the boundary, not the data */

    while ((c1 = getc(infile)) != EOF) {
        if (sawnewline && boundaries && (c1 == '-')) {
            char Buf[200];
            unsigned char *s;

            ungetc(c1, infile);
            fgets(Buf, sizeof(Buf), infile);
            if (boundaries
                 && (Buf[0] == '-')
                 && (Buf[1] == '-')
                 && PendingBoundary(Buf, boundaries, boundaryct)) {
                return;
            }
            /* Not a boundary, now we must treat THIS line as q-p, sigh */
            if (neednewline) {
                putc('\n', outfile);
                neednewline = 0;
            }
            for (s=(unsigned char *) Buf; *s; ++s) {
                if (*s == '=') {
                    if (!*++s) break;
                    if (*s == '\n') {
                        /* ignore it */
                        sawnewline = 1;
                    } else {
                        c1 = hexchar(*s);
                        if (!*++s) break;
                        c2 = hexchar(*s);
                        putc(c1<<4 | c2, outfile);
                    }
                } else {
#ifdef WIN32_NATIVE
                    if (*s == '\n')
                        putc('\r', outfile);	/* insert CR for binary-mode write */
#endif
                    putc(*s, outfile);
                }
            }
        } else {
            if (neednewline) {
                putc('\n', outfile);
                neednewline = 0;
            }
            if (c1 == '=') {
                sawnewline = 0;
                c1 = getc(infile);
                if (c1 == '\n') {
                    /* ignore it */
                    sawnewline = 1;
                } else {
                    c2 = getc(infile);
                    c1 = hexchar(c1);
                    c2 = hexchar(c2);
                    putc(c1<<4 | c2, outfile);
                    if (c2 == '\n') sawnewline = 1;
                }
            } else {
                if (c1 == '\n') {
                    sawnewline = 1;
                    neednewline = 1;
                } else {
                    sawnewline = 0;
                    putc(c1, outfile);
                }
            }
        }
    }
    if (neednewline) {
        putc('\n', outfile);
        neednewline = 0;
    }    
}


/*
Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)

Permission to use, copy, modify, and distribute this material 
for any purpose and without fee is hereby granted, provided 
that the above copyright notice and this permission notice 
appear in all copies, and that the name of Bellcore not be 
used in advertising or publicity pertaining to this 
material without the specific, prior written permission 
of an authorized representative of Bellcore.  BELLCORE 
MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY 
OF THIS MATERIAL FOR ANY PURPOSE.  IT IS PROVIDED "AS IS", 
WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
*/
#ifdef WIN32_NATIVE
#include <io.h>
#include <fcntl.h>
#endif

#define BASE64 1
#define QP 2 /* quoted-printable */

int main(int argc, char *argv[])
{
    int encode = 1, which = BASE64, i, portablenewlines = 0;
    FILE *fp = stdin;
    FILE *fpo = stdout;

    for (i=1; i<argc; ++i) {
        if (argv[i][0] == '-') {
	    switch (argv[i][1]) {
		case 'o':
		    if (++i >= argc) {
			fprintf(stderr, "mimencode: -o requires a file name.\n");
			exit(-1);
		    }
		    fpo = fopen(argv[i], "w");
		    if (!fpo) {
			perror(argv[i]);
			exit(-1);
		    }
		    break;
                case 'u':
                    encode = 0;
                    break;
                case 'q':
                    which = QP;
                    break;
                case 'p':
                    portablenewlines = 1;
                    break;
                case 'b':
                    which = BASE64;
                    break;
		default:
                    fprintf(stderr,
                       "Usage: mmencode [-u] [-q] [-b] [-p] [-o outputfile] [file name]\n");
                    exit(-1);
            }
        } else {
#ifdef WIN32_NATIVE
            if (encode)
                fp = fopen(argv[i], "rb");
            else
            {
                fp = fopen(argv[i], "rt");
                setmode(fileno(fpo), O_BINARY);
            } /* else */
#else
            fp = fopen(argv[i], "r");
#endif /* WIN32_NATIVE */
            if (!fp) {
                perror(argv[i]);
                exit(-1);
            }
        }
    }
#ifdef WIN32_NATIVE
    if (fp == stdin) setmode(fileno(fp), O_BINARY);
#endif /* WIN32_NATIVE */
    if (which == BASE64) {
        if (encode) {
            to64(fp, fpo, portablenewlines);
        } else {
            from64(fp,fpo, (char **) NULL, (int *) 0, portablenewlines);
        }
    } else {
        if (encode) toqp(fp, fpo); else fromqp(fp, fpo, NULL, 0);
    }
    return(0);
}