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path: root/src/tools/perftool/cpeldump.c
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/*
 * Copyright (c) 2015 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
  Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus

  Permission is hereby granted, free of charge, to any person obtaining
  a copy of this software and associated documentation files (the
  "Software"), to deal in the Software without restriction, including
  without limitation the rights to use, copy, modify, merge, publish,
  distribute, sublicense, and/or sell copies of the Software, and to
  permit persons to whom the Software is furnished to do so, subject to
  the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#ifndef included_clib_vec_bootstrap_h
#define included_clib_vec_bootstrap_h

/** \file
    Vector bootstrap header file
*/

/* Bootstrap include so that #include <vppinfra/mem.h> can include e.g.
   <vppinfra/mheap.h> which depends on <vppinfra/vec.h>. */

/** \brief vector header structure

   Bookkeeping header preceding vector elements in memory.
   User header information may preceed standard vec header.
   If you change u32 len -> u64 len, single vectors can
   exceed 2**32 elements. Clib heaps are vectors. */

typedef struct
{
  u32 len; /**< Number of elements in vector (NOT its allocated length). */
  u8 numa_id; /**< NUMA id */
  u8 vpad[3]; /**< pad to 8 bytes */
  u8 vector_data[0];  /**< Vector data . */
} vec_header_t;

#define VEC_NUMA_UNSPECIFIED (0xFF)

/** \brief Find the vector header

    Given the user's pointer to a vector, find the corresponding
    vector header

    @param v pointer to a vector
    @return pointer to the vector's vector_header_t
*/
#define _vec_find(v)	((vec_header_t *) (v) - 1)

#define _vec_round_size(s)
/* 
 *------------------------------------------------------------------
 * Copyright (c) 2006-2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <stdio.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <ctype.h>
#include <vppinfra/clib.h>
#include <vppinfra/vec.h>
#include <vppinfra/hash.h>
#include <vppinfra/mem.h>
#include <pwd.h>
#include <stdarg.h>
#include <time.h>
#include "cpel.h"

char *time_format = "%.03d:%.02d:%.02d:%.03d:%.03d ";
static char version[] = "cpeldump 2.0";

#define USEC_PER_MS 1000LL
#define USEC_PER_SECOND (1000*USEC_PER_MS)
#define USEC_PER_MINUTE (60*USEC_PER_SECOND)
#define USEC_PER_HOUR (60*USEC_PER_MINUTE)

uword *the_strtab_hash; /* (name, base-VA) hash of all string tables */
uword *the_evtdef_hash; /* (event-id, event-definition) hash */
uword *the_trackdef_hash; /* (track-id, track-definition) hash */

int widest_name_format=5;
int widest_track_format=5;

typedef struct bound_event_ {
    u32 event_code;
    u8  *event_str;
    u8  *datum_str;
    u32  is_strtab_ref;
} bound_event_t;

bound_event_t *bound_events;

typedef struct bound_track_ {
    u32 track;
    u8  *track_str;
} bound_track_t;

bound_track_t *bound_tracks;

void fatal(char *s)
{
    fprintf(stderr, "%s", s);
    exit(1);
}

typedef enum {
    PASS1=1,
    PASS2=2,
} pass_t;

typedef struct {
    int (*pass1)(cpel_section_header_t *, int, FILE *);
    int (*pass2)(cpel_section_header_t *, int, FILE *);
} section_processor_t;

int bad_section(cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    fprintf(ofp, "Bad (type 0) section, skipped...\n");
    return(0);
}

int noop_pass(cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    return(0);
}

int strtab_pass1(cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    uword *p;
    u8 *strtab_data_area = (u8 *)(sh+1);
    
    /* Multiple string tables with the same name are Bad... */
    p = hash_get_mem(the_strtab_hash, strtab_data_area);
    if (p) {
        fprintf(ofp, "Duplicate string table name %s", strtab_data_area);
    }
    /*
     * Looks funny, but we really do want key = first string in the
     * table, value = address(first string in the table) 
     */
    hash_set_mem(the_strtab_hash, strtab_data_area, strtab_data_area);
    if (verbose) {
        fprintf(stderr, "String Table %s\n", strtab_data_area);
    }
    return(0);
}

int evtdef_pass1(cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    int i, nevents;
    event_definition_section_header_t *edh;
    event_definition_t *ep;
    u8 *this_strtab;
    u32 event_code;
    uword *p;
    bound_event_t *bp;
    int thislen;

    edh = (event_definition_section_header_t *)(sh+1);
    nevents = ntohl(edh->number_of_event_definitions);
    
    if (verbose) {
        fprintf(stderr, "Event Definition Section: %d definitions\n",
                nevents);
    }

    p = hash_get_mem(the_strtab_hash, edh->string_table_name);
    if (!p) {
        fprintf(ofp, "Fatal: couldn't find string table\n");
        return(1);
    }
    this_strtab = (u8 *)p[0];

    ep = (event_definition_t *)(edh+1);
    
    for (i = 0; i < nevents; i++) {
        event_code = ntohl(ep->event);
        p = hash_get(the_evtdef_hash, event_code);
        if (p) {
            fprintf(ofp, "Event %d redefined, retain first definition\n",
                    event_code);
            continue;
        }
        vec_add2(bound_events, bp, 1);
        bp->event_code = event_code;
        bp->event_str = this_strtab + ntohl(ep->event_format);
        bp->datum_str = this_strtab + ntohl(ep->datum_format);
        bp->is_strtab_ref = 0;
        /* Decide if the datum format is a %s format => strtab reference */
        {
            int j;
            int seen_percent=0;

            for (j = 0; j < strlen((char *)bp->datum_str); j++) {
                if (bp->datum_str[j] == '%'){
                    seen_percent=1;
                    continue;
                }
                if (seen_percent && bp->datum_str[j] == 's') {
                    bp->is_strtab_ref = 1;
                }
            }
        }
        
        hash_set(the_evtdef_hash, event_code, bp - bound_events);

        thislen = strlen((char *)bp->event_str);
        if (thislen > widest_name_format)
            widest_name_format = thislen;

        ep++;
    }
    return (0);
}

int trackdef_pass1(cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    int i, nevents;
    track_definition_section_header_t *tdh;
    track_definition_t *tp;
    u8 *this_strtab;
    u32 track_code;
    uword *p;
    bound_track_t *btp;
    int thislen;

    tdh = (track_definition_section_header_t *)(sh+1);
    nevents = ntohl(tdh->number_of_track_definitions);
    
    if (verbose) {
        fprintf(stderr, "Track Definition Section: %d definitions\n",
                nevents);
    }

    p = hash_get_mem(the_strtab_hash, tdh->string_table_name);
    if (!p) {
        fprintf(ofp, "Fatal: couldn't find string table\n");
        return(1);
    }
    this_strtab = (u8 *)p[0];

    tp = (track_definition_t *)(tdh+1);
    
    for (i = 0; i < nevents; i++) {
        track_code = ntohl(tp->track);
        p = hash_get(the_trackdef_hash, track_code);
        if (p) {
            fprintf(ofp, "track %d redefined, retain first definition\n",
                    track_code);
            continue;
        }
        vec_add2(bound_tracks, btp, 1);
        btp->track = track_code;
        btp->track_str = this_strtab + ntohl(tp->track_format);
        hash_set(the_trackdef_hash, track_code, btp - bound_tracks);

        thislen = strlen((char *)btp->track_str);
        if (thislen > widest_track_format)
            widest_track_format = thislen;
        tp++;
    }
    return (0);
}

int unsupported_pass (cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    if (verbose) {
        fprintf(stderr, "Unsupported type %d section\n",
                ntohl(sh->section_type));
    }
    return(0);
}

int event_pass2(cpel_section_header_t *sh, int verbose, FILE *ofp)
{
    event_section_header_t *eh;
    f64 ticks_per_us;
    u32 event_code, track_code;
    u64 starttime = 0xFFFFFFFFFFFFFFFFULL;
    int nevents;
    int i;
    uword *p;
    event_entry_t *ep;
    u64 now;
    u64 delta;
    u32 hours, minutes, seconds, msec, usec;
    u32 time0, time1;
    double d;
    bound_event_t *bp;
    bound_event_t generic_event;
    bound_track_t *tp=0;
    bound_track_t generic_track;
    u32 last_track_code;
    u8 *s, *evtpad, *trackpad;
    u8 *this_strtab;

    generic_event.event_str = (u8 *)"%d";
    generic_event.datum_str = (u8 *)"0x%08x";
    generic_event.is_strtab_ref = 0;

    generic_track.track_str = (u8 *)"%d";
    last_track_code = 0xdeadbeef;

    eh = (event_section_header_t *)(sh+1);
    nevents = ntohl(eh->number_of_events);
    ticks_per_us = ((double)ntohl(eh->clock_ticks_per_second)) / 1e6;

    if (verbose) {
        fprintf(stderr, "Event section: %d events, %.3f ticks_per_us\n", 
                nevents, ticks_per_us);
    }

    ep = (event_entry_t *)(eh+1);

    p = hash_get_mem(the_strtab_hash, eh->string_table_name);
    if (!p) {
        fprintf(ofp, "Fatal: couldn't find string table\n");
        return(1);
    }
    this_strtab = (u8 *)p[0];

    evtpad = format(0, "%%-%ds ", widest_name_format);
    vec_add1(evtpad, 0);
    trackpad = format(0, "%%-%ds ", widest_track_format);
    vec_add1(trackpad, 0);

    for (i = 0; i < nevents; i++) {
        time0 = ntohl (ep->time[0]);
        time1 = ntohl (ep->time[1]);

        now = (((u64) time0)<<32) | time1;
        
        /* Convert from bus ticks to usec */
        d = now;
        d /= ticks_per_us;

        now = d;

        if (starttime == 0xFFFFFFFFFFFFFFFFULL)
            starttime = now;
        
        delta = now - starttime;

        /* Delta = time since first event, in usec */

        hours = delta / USEC_PER_HOUR;
        if (hours) 
            delta -= ((u64) hours * USEC_PER_HOUR);
        minutes = delta / USEC_PER_MINUTE;
        if (minutes)
            delta -= ((u64) minutes * USEC_PER_MINUTE);
        seconds = delta / USEC_PER_SECOND;
        if (seconds)
            delta -= ((u64) seconds * USEC_PER_SECOND);
        msec = delta / USEC_PER_MS;
        if (msec)
            delta -= ((u64) msec * USEC_PER_MS);

        usec = delta;

        /* Output the timestamp */
        fprintf(ofp, time_format, hours, minutes, seconds, msec, usec);

        /* output the track */
        track_code = ntohl(ep->track);

        if (track_code != last_track_code) {
            p = hash_get(the_trackdef_hash, track_code);
            if (p) {
                tp = &bound_tracks[p[0]];
            } else {
                tp = &generic_track;
            }
        }
        s = format(0, (char *)tp->track_str, track_code);
        vec_add1(s, 0);
        fprintf(ofp, (char *)trackpad, s);
        vec_free(s);

        /* output the event and datum */
        if (0 && verbose) {
            fprintf(stderr, "raw event code %d, raw event datum 0x%x\n",
                    ntohl(ep->event_code), ntohl(ep->event_datum));
        }

        event_code = ntohl(ep->event_code);
        p = hash_get(the_evtdef_hash, event_code);
        if (p) {
            bp = &bound_events[p[0]];
        } else {
            bp = &generic_event;
        }
        s = format(0, (char *)bp->event_str, ntohl(ep->event_code));
        vec_add1(s, 0);
        fprintf(ofp, (char *)evtpad, s);
        vec_free(s);
        if (bp->is_strtab_ref) {
            fprintf(ofp, (char *) bp->datum_str, 
                    &this_strtab[ntohl(ep->event_datum)]);
        } else {
            fprintf(ofp, (char *) bp->datum_str, ntohl(ep->event_datum));
        }
        fputs("\n", ofp);
        ep++;
    }
    vec_free(evtpad);
    vec_free(trackpad);
    return(0);
}

/* 
 * Note: If necessary, add passes / columns to this table to 
 * handle section order dependencies.
 */

section_processor_t processors[CPEL_NUM_SECTION_TYPES+1] =
{
    {bad_section,	noop_pass}, 		/* type 0 -- f**ked */
    {strtab_pass1, 	noop_pass}, 		/* type 1 -- STRTAB */
    {unsupported_pass,  noop_pass}, 		/* type 2 -- SYMTAB */
    {evtdef_pass1,      noop_pass},             /* type 3 -- EVTDEF */
    {trackdef_pass1,    noop_pass},		/* type 4 -- TRACKDEF */
    {noop_pass,         event_pass2},           /* type 5 -- EVENTS */
};


int process_section(cpel_section_header_t *sh, int verbose, FILE *ofp,
                    pass_t pass)
{
    u32 type;
    type = ntohl(sh->section_type);
    int rv;
    int (*fp)(cpel_section_header_t *, int, FILE *);

    if (type > CPEL_NUM_SECTION_TYPES) {
        fprintf(stderr, "Unknown section type %d\n", type);
        return(1);
    }
    switch(pass) {
    case PASS1:
        fp = processors[type].pass1;
        break;

    case PASS2:
        fp = processors[type].pass2;
        break;
        
    default:
        fprintf(stderr, "Unknown pass %d\n", pass);
        return(1);
    }

    rv = (*fp)(sh, verbose, ofp);

    return(rv);
}

int cpel_dump_file_header(cpel_file_header_t *fh, int verbose, FILE *ofp)
{
    time_t file_time;

    if (verbose) {
        fprintf(stderr, "CPEL file: %s-endian, version %d\n",
                ((fh->endian_version & CPEL_FILE_LITTLE_ENDIAN) ? 
                 "little" : "big"), 
                fh->endian_version & CPEL_FILE_VERSION_MASK);
        
        file_time = ntohl(fh->file_date);
        
        fprintf(stderr, "File created %s", ctime(&file_time));
        fprintf(stderr, "File has %d sections\n", 
                ntohs(fh->nsections));
    }

    return(0);
}


int cpel_dump(u8 *cpel, int verbose, FILE *ofp)
{
    cpel_file_header_t *fh;
    cpel_section_header_t *sh;
    u16 nsections;
    u32 section_size;
    int i;

    /* First, the file header */
    fh = (cpel_file_header_t *)cpel;
    if (fh->endian_version != CPEL_FILE_VERSION) {
        if (fh->endian_version & CPEL_FILE_LITTLE_ENDIAN) {
            fprintf(stderr, "Little endian data format not supported\n");
            return(1);
        }
        fprintf(stderr, "Unsupported file version 0x%x\n", 
                fh->endian_version);
        return(1);
    }
    cpel_dump_file_header(fh, verbose, ofp);
    nsections = ntohs(fh->nsections);

    /*
     * Take two passes through the file. PASS1 builds
     * data structures, PASS2 actually dumps the file.
     * Just in case the sections are in an unobvious order.
     */
    sh = (cpel_section_header_t *)(fh+1);
    for (i = 0; i < nsections; i++) {
        section_size = ntohl(sh->data_length);

        if(verbose) {
            fprintf(stderr, 
                    "Section type %d, size %d\n", ntohl(sh->section_type),
                    section_size);
        }

        if(process_section(sh, verbose, ofp, PASS1))
            return(1);

        sh++;
        sh = (cpel_section_header_t *)(((u8 *)sh)+section_size);
    }

    sh = (cpel_section_header_t *)(fh+1);
    for (i = 0; i < nsections; i++) {
        if(process_section(sh, verbose, ofp, PASS2))
            return(1);
        section_size = ntohl(sh->data_length);
        sh++;
        sh = (cpel_section_header_t *)(((u8 *)sh)+section_size);
    }
    return(0);
}


char *mapfile (char *file)
{
    struct stat statb;
    char *rv;
    int maphfile;
    size_t mapfsize;
    
    maphfile = open (file, O_RDONLY);

    if (maphfile < 0)
    {
        fprintf (stderr, "Couldn't read %s, skipping it...\n", file);
        return (NULL);
    }

    if (fstat (maphfile, &statb) < 0)
    {
        fprintf (stderr, "Couldn't get size of %s, skipping it...\n", file);
        return (NULL);
    }

    /* Don't try to mmap directories, FIFOs, semaphores, etc. */
    if (! (statb.st_mode & S_IFREG)) {
        fprintf (stderr, "%s is not a regular file, skipping it...\n", file);
        return (NULL);
    }

    mapfsize = statb.st_size;

    if (mapfsize < 3)
    {
        fprintf (stderr, "%s zero-length, skipping it...\n", file);
        close (maphfile);
        return (NULL);
    }

    rv = mmap (0, mapfsize, PROT_READ, MAP_SHARED, maphfile, 0);

    if (rv == 0)
    {
        fprintf (stderr, "%s problem mapping, I quit...\n", file);
        exit (-1);
    }
    close (maphfile);
    return (rv);
}

/*
 * main 
 */
int main (int argc, char **argv)
{
    char *cpel_file = 0;
    char *outputfile = 0;
    FILE *ofp;
    char *cpel;
    int verbose=0;
    int curarg=1;

    while (curarg < argc) {
        if (!strncmp(argv[curarg], "--input-file", 3)) {
            curarg++;
            if (curarg < argc) {
                cpel_file = argv[curarg];
                curarg++;
                continue;
            }
            fatal("Missing filename after --input-file\n");
        }
        if (!strncmp(argv[curarg], "--output-file", 3)) {
            curarg ++;
            if (curarg < argc) {
                outputfile = argv[curarg];
                curarg ++;
                continue;
            }
            fatal("Missing filename after --output-file\n");
        }
        if (!strncmp(argv[curarg], "--verbose", 3)) {
            curarg++;
            verbose = 1;
            continue;
        }

    usage:
        fprintf(stderr, 
          "cpeldump --input-file <filename> [--output-file <filename>]\n");
        fprintf(stderr, "%s\n", version);
        exit(1);
    }

    if (cpel_file == 0)
        goto usage;

    clib_mem_init (0, ((uword)3<<30));

    cpel = mapfile(cpel_file);
    if (cpel == 0) {
        fprintf(stderr, "Couldn't map %s...\n", cpel_file);
        exit(1);
    }

    if (!outputfile) {
        ofp = fdopen(1, "w");
        if (ofp == NULL) {
            fprintf(stderr, "Couldn't fdopen(1)?\n");
            exit(1);
        }
    } else {
        ofp = fopen(outputfile, "w");
        if (ofp == NULL) {
            fprintf(stderr, "Couldn't create %s...\n", outputfile);
            exit(1);
        }
    }

    the_strtab_hash = hash_create_string (0, sizeof (uword));
    the_evtdef_hash = hash_create (0, sizeof (uword));
    the_trackdef_hash = hash_create (0, sizeof (uword));

#ifdef TEST_TRACK_INFO
    {
        bound_track_t *btp;
        vec_add2(bound_tracks, btp, 1);
        btp->track = 0;
        btp->track_str = "cpu %d";
        hash_set(the_trackdef_hash, 0, btp - bound_tracks);
        hash_set(the_trackdef_hash, 1, btp - bound_tracks);
    }
#endif

    if (cpel_dump((u8 *)cpel, verbose, ofp)) {
        if (outputfile)
            unlink(outputfile);
    }

    fclose(ofp);
    return(0);
}