darshan-logutils.c 22.4 KB
Newer Older
1
2
3
4
5
/*
 *  (C) 2009 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

6
7
#include <stdio.h>
#include <string.h>
8
#include <assert.h>
9
#include <stdlib.h>
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
#include "darshan-logutils.h"

/* isn't there a clever c way to avoid this? */
char *darshan_names[] = {
    "CP_INDEP_OPENS",
    "CP_COLL_OPENS",               /* count of MPI collective opens */
    "CP_INDEP_READS",              /* count of independent MPI reads */
    "CP_INDEP_WRITES",             /* count of independent MPI writes */
    "CP_COLL_READS",               /* count of collective MPI reads */
    "CP_COLL_WRITES",              /* count of collective MPI writes */
    "CP_SPLIT_READS",              /* count of split collective MPI reads */
    "CP_SPLIT_WRITES",             /* count of split collective MPI writes */
    "CP_NB_READS",                 /* count of nonblocking MPI reads */
    "CP_NB_WRITES",                /* count of nonblocking MPI writes */
    "CP_SYNCS",                    /* count of MPI_File_sync */
    "CP_POSIX_READS",              /* count of posix reads */
    "CP_POSIX_WRITES",             /* count of posix writes */
    "CP_POSIX_OPENS",              /* count of posix opens */
    "CP_POSIX_SEEKS",              /* count of posix seeks */
    "CP_POSIX_STATS",              /* count of posix stat/lstat/fstats */
    "CP_POSIX_MMAPS",              /* count of posix mmaps */
    "CP_POSIX_FREADS",
    "CP_POSIX_FWRITES",
    "CP_POSIX_FOPENS",
    "CP_POSIX_FSEEKS",
    "CP_POSIX_FSYNCS",
    "CP_POSIX_FDSYNCS",
37
38
39
    "CP_INDEP_NC_OPENS",
    "CP_COLL_NC_OPENS",
    "CP_HDF5_OPENS",
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
    "CP_COMBINER_NAMED",           /* count of each MPI datatype category */
    "CP_COMBINER_DUP",
    "CP_COMBINER_CONTIGUOUS",
    "CP_COMBINER_VECTOR",
    "CP_COMBINER_HVECTOR_INTEGER",
    "CP_COMBINER_HVECTOR",
    "CP_COMBINER_INDEXED",
    "CP_COMBINER_HINDEXED_INTEGER",
    "CP_COMBINER_HINDEXED",
    "CP_COMBINER_INDEXED_BLOCK",
    "CP_COMBINER_STRUCT_INTEGER",
    "CP_COMBINER_STRUCT",
    "CP_COMBINER_SUBARRAY",
    "CP_COMBINER_DARRAY",
    "CP_COMBINER_F90_REAL",
    "CP_COMBINER_F90_COMPLEX",
    "CP_COMBINER_F90_INTEGER",
    "CP_COMBINER_RESIZED",
    "CP_HINTS",                     /* count of MPI hints used */
    "CP_VIEWS",                     /* count of MPI set view calls */
    "CP_MODE",                      /* mode of file */
    "CP_BYTES_READ",                /* total bytes read */
    "CP_BYTES_WRITTEN",             /* total bytes written */
    "CP_MAX_BYTE_READ",             /* highest offset byte read */
    "CP_MAX_BYTE_WRITTEN",          /* highest offset byte written */
    "CP_CONSEC_READS",              /* count of consecutive reads */
    "CP_CONSEC_WRITES",             /* count of consecutive writes */
    "CP_SEQ_READS",                 /* count of sequential reads */
    "CP_SEQ_WRITES",                /* count of sequential writes */
    "CP_RW_SWITCHES",
    "CP_MEM_NOT_ALIGNED",           /* count of accesses not mem aligned */
    "CP_MEM_ALIGNMENT",             /* mem alignment in bytes */
    "CP_FILE_NOT_ALIGNED",          /* count of accesses not file aligned */
    "CP_FILE_ALIGNMENT",            /* file alignment in bytes */
74
75
    "CP_MAX_READ_TIME_SIZE",
    "CP_MAX_WRITE_TIME_SIZE",
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
    "CP_SIZE_READ_0_100",           /* count of posix read size ranges */
    "CP_SIZE_READ_100_1K",
    "CP_SIZE_READ_1K_10K",
    "CP_SIZE_READ_10K_100K",
    "CP_SIZE_READ_100K_1M",
    "CP_SIZE_READ_1M_4M",
    "CP_SIZE_READ_4M_10M",
    "CP_SIZE_READ_10M_100M",
    "CP_SIZE_READ_100M_1G",
    "CP_SIZE_READ_1G_PLUS",
    "CP_SIZE_WRITE_0_100",          /* count of posix write size ranges */
    "CP_SIZE_WRITE_100_1K",
    "CP_SIZE_WRITE_1K_10K",
    "CP_SIZE_WRITE_10K_100K",
    "CP_SIZE_WRITE_100K_1M",
    "CP_SIZE_WRITE_1M_4M",
    "CP_SIZE_WRITE_4M_10M",
    "CP_SIZE_WRITE_10M_100M",
    "CP_SIZE_WRITE_100M_1G",
    "CP_SIZE_WRITE_1G_PLUS",
    "CP_SIZE_READ_AGG_0_100",       /* count of MPI read size ranges */
    "CP_SIZE_READ_AGG_100_1K",
    "CP_SIZE_READ_AGG_1K_10K",
    "CP_SIZE_READ_AGG_10K_100K",
    "CP_SIZE_READ_AGG_100K_1M",
    "CP_SIZE_READ_AGG_1M_4M",
    "CP_SIZE_READ_AGG_4M_10M",
    "CP_SIZE_READ_AGG_10M_100M",
    "CP_SIZE_READ_AGG_100M_1G",
    "CP_SIZE_READ_AGG_1G_PLUS",
    "CP_SIZE_WRITE_AGG_0_100",      /* count of MPI write size ranges */
    "CP_SIZE_WRITE_AGG_100_1K",
    "CP_SIZE_WRITE_AGG_1K_10K",
    "CP_SIZE_WRITE_AGG_10K_100K",
    "CP_SIZE_WRITE_AGG_100K_1M",
    "CP_SIZE_WRITE_AGG_1M_4M",
    "CP_SIZE_WRITE_AGG_4M_10M",
    "CP_SIZE_WRITE_AGG_10M_100M",
    "CP_SIZE_WRITE_AGG_100M_1G",
    "CP_SIZE_WRITE_AGG_1G_PLUS",
    "CP_EXTENT_READ_0_100",          /* count of MPI read extent ranges */
    "CP_EXTENT_READ_100_1K",
    "CP_EXTENT_READ_1K_10K",
    "CP_EXTENT_READ_10K_100K",
    "CP_EXTENT_READ_100K_1M",
    "CP_EXTENT_READ_1M_4M",
    "CP_EXTENT_READ_4M_10M",
    "CP_EXTENT_READ_10M_100M",
    "CP_EXTENT_READ_100M_1G",
    "CP_EXTENT_READ_1G_PLUS",
    "CP_EXTENT_WRITE_0_100",         /* count of MPI write extent ranges */
    "CP_EXTENT_WRITE_100_1K",
    "CP_EXTENT_WRITE_1K_10K",
    "CP_EXTENT_WRITE_10K_100K",
    "CP_EXTENT_WRITE_100K_1M",
    "CP_EXTENT_WRITE_1M_4M",
    "CP_EXTENT_WRITE_4M_10M",
    "CP_EXTENT_WRITE_10M_100M",
    "CP_EXTENT_WRITE_100M_1G",
    "CP_EXTENT_WRITE_1G_PLUS",
    "CP_STRIDE1_STRIDE",             /* the four most frequently appearing strides */
    "CP_STRIDE2_STRIDE",
    "CP_STRIDE3_STRIDE",
    "CP_STRIDE4_STRIDE",
    "CP_STRIDE1_COUNT",              /* count of each of the most frequent strides */
    "CP_STRIDE2_COUNT",
    "CP_STRIDE3_COUNT",
    "CP_STRIDE4_COUNT",
    "CP_ACCESS1_ACCESS",
    "CP_ACCESS2_ACCESS",
    "CP_ACCESS3_ACCESS",
    "CP_ACCESS4_ACCESS",
    "CP_ACCESS1_COUNT",
    "CP_ACCESS2_COUNT",
    "CP_ACCESS3_COUNT",
    "CP_ACCESS4_COUNT",
152
    "CP_DEVICE",
153
    "CP_SIZE_AT_OPEN",
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

    "CP_NUM_INDICES"
};

/* isn't there a clever c way to avoid this? */
char *darshan_f_names[] = {
    "CP_F_OPEN_TIMESTAMP",        /* timestamp of first open */
    "CP_F_READ_START_TIMESTAMP",  /* timestamp of first read */
    "CP_F_WRITE_START_TIMESTAMP", /* timestamp of first write */
    "CP_F_CLOSE_TIMESTAMP",       /* timestamp of last close */
    "CP_F_READ_END_TIMESTAMP",    /* timestamp of last read */
    "CP_F_WRITE_END_TIMESTAMP",   /* timestamp of last write */
    "CP_F_POSIX_READ_TIME",       /* cumulative posix read time */
    "CP_F_POSIX_WRITE_TIME",      /* cumulative posix write time */
    "CP_F_POSIX_META_TIME",       /* cumulative posix meta time */
    "CP_F_MPI_META_TIME",         /* cumulative mpi-io metadata time */
    "CP_F_MPI_READ_TIME",         /* cumulative mpi-io read time */
    "CP_F_MPI_WRITE_TIME",        /* cumulative mpi-io write time */
172
173
    "CP_F_MAX_READ_TIME",
    "CP_F_MAX_WRITE_TIME",
174
175
176
    "CP_F_NUM_INDICES",
};

177
/*******************************
178
179
180
181
 * version 1.22 to 1.23 differences
 *
 * - added:
 *   - CP_DEVICE
182
 *   - CP_SIZE_AT_OPEN
183
 * - changed params:
184
185
 *   - CP_FILE_RECORD_SIZE: 1240 to 1248
 *   - CP_NUM_INDICES: 138 to 140
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
 */
#define CP_NUM_INDICES_1_22 138
struct darshan_file_1_22
{
    uint64_t hash;
    int rank;
    int64_t counters[CP_NUM_INDICES_1_22];
    double fcounters[CP_F_NUM_INDICES];
    char name_suffix[CP_NAME_SUFFIX_LEN+1];
};

static void shift_missing_1_22(struct darshan_file* file);


/*******************************
 * version 1.21 to 1.23 differences 
202
203
204
205
206
207
 * - added:
 *   - CP_INDEP_NC_OPENS
 *   - CP_COLL_NC_OPENS
 *   - CP_HDF5_OPENS
 *   - CP_MAX_READ_TIME_SIZE
 *   - CP_MAX_WRITE_TIME_SIZE
208
 *   - CP_DEVICE
209
 *   - CP_SIZE_AT_OPEN
210
211
212
 *   - CP_F_MAX_READ_TIME
 *   - CP_F_MAX_WRITE_TIME
 * - changed params:
213
214
 *   - CP_FILE_RECORD_SIZE: 1184 to 1248
 *   - CP_NUM_INDICES: 133 to 140
215
 *   - CP_F_NUM_INDICES: 12 to 14
216
 * - so 60 bytes worth of new indices are the only difference
217
218
219
220
221
222
223
224
225
226
227
228
229
230
 */
#define CP_NUM_INDICES_1_21 133
#define CP_F_NUM_INDICES_1_21 12
struct darshan_file_1_21
{
    uint64_t hash;
    int rank;
    int64_t counters[CP_NUM_INDICES_1_21];
    double fcounters[CP_F_NUM_INDICES_1_21];
    char name_suffix[CP_NAME_SUFFIX_LEN+1];
};

static void shift_missing_1_21(struct darshan_file* file);

231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
/* function pointers so that we can switch functions depending on what file
 * version is detected
 */
int (*getjob_internal)(darshan_fd file, struct darshan_job *job);
int (*getfile_internal)(darshan_fd fd, 
    struct darshan_job *job, 
    struct darshan_file *file);

static int getjob_internal_200(darshan_fd file, struct darshan_job *job);
static int getfile_internal_200(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file);
static int getjob_internal_124(darshan_fd file, struct darshan_job *job);
static int getfile_internal_124(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file);
static int getfile_internal_122(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file);
static int getfile_internal_121(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file);

250
/* a rather crude API for accessing raw binary darshan files */
251
darshan_fd darshan_log_open(const char *name)
252
{
253
254
255
256
257
258
259
260
261
262
263
264
265
    darshan_fd tmp_fd = malloc(sizeof(*tmp_fd));
    if(!tmp_fd)
        return(NULL);

    memset(tmp_fd, 0, sizeof(*tmp_fd));

    tmp_fd->gzf = gzopen(name, "r");
    if(!tmp_fd->gzf)
    {
        free(tmp_fd);
        tmp_fd = NULL;
    }
    return tmp_fd;
266
267
}

268
/* darshan_log_getjob()
269
270
271
 *
 * returns 0 on success, -1 on failure
 */
272
int darshan_log_getjob(darshan_fd file, struct darshan_job *job)
273
274
{
    int ret;
275

276
    gzseek(file->gzf, 0, SEEK_SET);
277

278
279
280
281
282
    /* read version number first so we know how to digest the rest of the
     * file
     */
    ret = gzread(file->gzf, file->version, 10);
    if(ret < 10)
283
    {
284
        fprintf(stderr, "Error: invalid log file (failed to read version).\n");
285
286
287
        return(-1);
    }

288
    if(strcmp(file->version, "2.00") == 0)
289
    {
290
291
        getjob_internal = getjob_internal_200;
        getfile_internal = getfile_internal_200;
292
    }
293
    else if(strcmp(file->version, "1.24") == 0)
294
    {
295
296
        getjob_internal = getjob_internal_124;
        getfile_internal = getfile_internal_124;
297
    }
298
    else if(strcmp(file->version, "1.23") == 0)
299
    {
300
301
302
        /* same as 1.24, except that mnt points may be incorrect */
        getjob_internal = getjob_internal_124;
        getfile_internal = getfile_internal_124;
303
    }
304
    else if(strcmp(file->version, "1.22") == 0)
305
    {
306
307
        getjob_internal = getjob_internal_124;
        getfile_internal = getfile_internal_122;
308
    }
309
    else if(strcmp(file->version, "1.21") == 0)
310
    {
311
312
        getjob_internal = getjob_internal_124;
        getfile_internal = getfile_internal_122;
313
314
    }
    else
315
    {
316
317
318
        fprintf(stderr, "Error: incompatible darshan file.\n");
        fprintf(stderr, "Error: expected version %s, but got %s\n", 
                CP_VERSION, file->version);
319
        return(-1);
320
321
    }

322
323
324
    ret = getjob_internal(file, job);
    return(ret);
}
325

326
327
328
329
330
331
332
/* darshan_log_getfile()
 *
 * return 1 if file record found, 0 on eof, and -1 on error
 */
int darshan_log_getfile(darshan_fd fd, struct darshan_job *job, struct darshan_file *file)
{
    int ret;
333

334
335
336
    ret = getfile_internal(fd, job, file);

    return(ret);
337
338
}

339
340
341
342
343
344
/* darshan_log_getmounts()
 * 
 * retrieves mount table information from the log.  Note that devs, mnt_pts,
 * and fs_types are arrays that will be allocated by the function and must
 * be freed by the caller.  count will indicate the size of the arrays
 */
345
int darshan_log_getmounts(darshan_fd fd, int64_t** devs, char*** mnt_pts, char***
346
347
348
349
350
351
352
    fs_types, int* count, int *flag)
{
    int ret;
    char* pos;
    int array_index = 0;
    char buf[CP_EXE_LEN+1];

353
    gzseek(fd->gzf, sizeof(struct darshan_job), SEEK_SET);
354

355
    ret = gzread(fd->gzf, buf, (CP_EXE_LEN + 1));
356
357
358
359
360
    if (ret < (CP_EXE_LEN + 1))
    {
        perror("gzread");
        return(-1);
    }
361
    if (gzeof(fd->gzf))
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
        *flag = 1;
    else
        *flag = 0;

    /* count entries */
    *count = 0;
    pos = buf;
    while((pos = strchr(pos, '\n')) != NULL)
    {
        pos++;
        (*count)++;
    }

    if(*count == 0)
    {
        /* no mount entries present */
        return(0);
    }

    /* allocate output arrays */
382
    *devs = malloc((*count)*sizeof(int64_t));
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
    assert(*devs);
    *mnt_pts = malloc((*count)*sizeof(char*));
    assert(*mnt_pts);
    *fs_types = malloc((*count)*sizeof(char*));
    assert(*fs_types);
    
    /* work backwards through the table and parse each line (except for
     * first, which holds command line information)
     */
    while((pos = strrchr(buf, '\n')) != NULL)
    {
        /* overestimate string lengths */
        (*mnt_pts)[array_index] = malloc(CP_EXE_LEN);
        assert((*mnt_pts)[array_index]);
        (*fs_types)[array_index] = malloc(CP_EXE_LEN);
        assert((*fs_types)[array_index]);
        
400
401
#if SIZEOF_LONG_INT == 4
        ret = sscanf(++pos, "%lld\t%s\t%s", &(*devs)[array_index],
402
            (*fs_types)[array_index], (*mnt_pts)[array_index]);
403
404
405
406
407
408
409
#elif SIZEOF_LONG_INT == 8
        ret = sscanf(++pos, "%ld\t%s\t%s", &(*devs)[array_index],
            (*fs_types)[array_index], (*mnt_pts)[array_index]);
#else
#  error Unexpected sizeof(long int)
#endif

410
411
412
413
414
415
416
417
418
419
420
421
422
423
        if(ret != 3)
        {
            fprintf(stderr, "Error: poorly formatted mount table in log file.\n");
            return(-1);
        }
        pos--;
        *pos = '\0';
        array_index++;
    }
   
    return (0);
}


424
int darshan_log_getexe(darshan_fd fd, char *buf, int *flag)
425
426
{
    int ret;
427
    char* newline;
428

429
    gzseek(fd->gzf, sizeof(struct darshan_job), SEEK_SET);
430

431
    ret = gzread(fd->gzf, buf, (CP_EXE_LEN + 1));
432
433
434
435
436
    if (ret < (CP_EXE_LEN + 1))
    {
        perror("gzread");
        return(-1);
    }
437
    if (gzeof(fd->gzf))
438
439
440
441
        *flag = 1;
    else
        *flag = 0;

442
443
444
445
446
447
448
449
    /* this call is only supposed to return the exe string, but starting in
     * log format 1.23 there could be a table of mount entry information
     * after the exe.  Look for newline character and truncate there.
     */
    newline = strchr(buf, '\n');
    if(newline)
        *newline = '\0';

450
451
452
    return (0);
}

453
void darshan_log_close(darshan_fd file)
454
{
455
456
    gzclose(file->gzf);
    free(file);
457
458
}

459
460
461
462
463
464
/* darshan_log_print_version_warnings()
 *
 * Print summary of any problems with the detected log format
 */
void darshan_log_print_version_warnings(struct darshan_job *job)
{
465
466
467
468
469
470
    if(strcmp(job->version_string, "2.00") == 0)
    {
        /* current version */
        return;
    }
 
471
    if(strcmp(job->version_string, "1.24") == 0)
472
473
474
    {
        return;
    }
475
    
476
477
478
    if(strcmp(job->version_string, "1.23") == 0)
    {
        printf("# WARNING: version 1.23 log format may have incorrect mount point mappings for files with rank > 0\n");
479
        return;
480
481
    }

482
483
484
485
    if(strcmp(job->version_string, "1.22") == 0)
    {
        printf("# WARNING: version 1.22 log format does not support the following parameters:\n");
        printf("#   CP_DEVICE\n");
486
487
488
        printf("#   CP_SIZE_AT_OPEN\n");
        printf("# It does not record mounted file systems, mount points, or fs types.\n");
        printf("# It also attributes syncs to cumulative metadata time, rather than cumulative write time.\n");
489
490
        return;
    }
491
492
493
494
495
496
497
498
499

    if(strcmp(job->version_string, "1.21") == 0)
    {
        printf("# WARNING: version 1.21 log format does not support the following parameters:\n");
        printf("#   CP_INDEP_NC_OPENS\n");
        printf("#   CP_COLL_NC_OPENS\n");
        printf("#   CP_HDF5_OPENS\n");
        printf("#   CP_MAX_READ_TIME_SIZE\n");
        printf("#   CP_MAX_WRITE_TIME_SIZE\n");
500
        printf("#   CP_DEVICE\n");
501
        printf("#   CP_SIZE_AT_OPEN\n");
502
503
        printf("#   CP_F_MAX_READ_TIME\n");
        printf("#   CP_F_MAX_WRITE_TIME\n");
504
        printf("# It also does not record mounted file systems, mount points, or fs types.\n");
505
        printf("# It also attributes syncs to cumulative metadata time, rather than cumulative write time.\n");
506
        printf("#\n");
507
508
509
510
511
512
513
514
        return;
    }

    fprintf(stderr, "Error: version %s not supported by parser.\n",
        job->version_string);
    return;
}

515
516
517
518
/* shift_missing_1_21()
 *
 * translates indices to account for counters that weren't present in log
 * format 1.21
519
 */
520
521
522
523
524
525
526
527
528
static void shift_missing_1_21(struct darshan_file* file)
{
    int c_index = 0;
    int missing_counters[] = {
        CP_INDEP_NC_OPENS,
        CP_COLL_NC_OPENS,
        CP_HDF5_OPENS,
        CP_MAX_READ_TIME_SIZE,
        CP_MAX_WRITE_TIME_SIZE,
529
        CP_DEVICE,
530
        CP_SIZE_AT_OPEN,
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
        -1};
    int missing_f_counters[] = {
        CP_F_MAX_READ_TIME,
        CP_F_MAX_WRITE_TIME,
        -1};

    c_index = 0;
    while(missing_counters[c_index] != -1)
    {
        int missing_counter = missing_counters[c_index];
        c_index++;
        if(missing_counter < (CP_NUM_INDICES - 1))
        {
            /* shift down */
            memmove(&file->counters[missing_counter+1],
                &file->counters[missing_counter],
                (CP_NUM_INDICES-missing_counter-1)*sizeof(int64_t));
        }
        /* zero out missing counter */
        file->counters[missing_counter] = 0;
    }

    c_index = 0;
    while(missing_f_counters[c_index] != -1)
    {
        int missing_counter = missing_f_counters[c_index];
        c_index++;
        if(missing_counter < (CP_F_NUM_INDICES - 1))
        {
            /* shift down */
            memmove(&file->fcounters[missing_counter+1],
                &file->fcounters[missing_counter],
                (CP_F_NUM_INDICES-missing_counter-1)*sizeof(double));
        }
        /* zero out missing counter */
        file->fcounters[missing_counter] = 0;
    }

    return;
}
571
572
573
574
575
576
577
578
579
580
581

/* shift_missing_1_22()
 *
 * translates indices to account for counters that weren't present in log
 * format 1.22
 */
static void shift_missing_1_22(struct darshan_file* file)
{
    int c_index = 0;
    int missing_counters[] = {
        CP_DEVICE,
582
        CP_SIZE_AT_OPEN,
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
        -1};

    c_index = 0;
    while(missing_counters[c_index] != -1)
    {
        int missing_counter = missing_counters[c_index];
        c_index++;
        if(missing_counter < (CP_NUM_INDICES - 1))
        {
            /* shift down */
            memmove(&file->counters[missing_counter+1],
                &file->counters[missing_counter],
                (CP_NUM_INDICES-missing_counter-1)*sizeof(int64_t));
        }
        /* zero out missing counter */
        file->counters[missing_counter] = 0;
    }

    return;
}
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765

static int getjob_internal_200(darshan_fd file, struct darshan_job *job)
{
    int ret;

    gzseek(file->gzf, 0, SEEK_SET);

    ret = gzread(file->gzf, job, sizeof(*job));
    if (ret < sizeof(*job))
    {
        if(gzeof(file->gzf))
        {
            fprintf(stderr, "Error: invalid log file (too short).\n");
        }
        perror("darshan_job_init");
        return(-1);
    }

    if(job->magic_nr == CP_MAGIC_NR)
    {
        /* no byte swapping needed, this file is in host format already */
        file->swap_flag = 0;
        return(0);
    }

    /* try byte swapping */
    DARSHAN_BSWAP64(&job->magic_nr);
    if(job->magic_nr == CP_MAGIC_NR)
    {
        file->swap_flag = 1;
        DARSHAN_BSWAP64(&job->uid);
        DARSHAN_BSWAP64(&job->start_time);
        DARSHAN_BSWAP64(&job->end_time);
        DARSHAN_BSWAP64(&job->nprocs);
        return(0);
    }

    /* otherwise this file is just broken */
    fprintf(stderr, "Error: bad magic number in darshan file.\n");
    return(-1);
}

static int getfile_internal_200(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file)
{
    int ret;
    const char* err_string;
    struct darshan_file_1_21 file_1_21;
    struct darshan_file_1_22 file_1_22;
    int i;
    
    if(gztell(fd->gzf) < CP_JOB_RECORD_SIZE)
        gzseek(fd->gzf, CP_JOB_RECORD_SIZE, SEEK_SET);

    /* reset file record, so that diff compares against a zero'd out record
     * if file is missing
     */
    memset(file, 0, sizeof(&file));

    ret = gzread(fd->gzf, file, sizeof(*file));
    if(ret == sizeof(*file))
    {
        /* got exactly one, correct size record */
        if(fd->swap_flag)
        {
            /* swap bytes if necessary */
            DARSHAN_BSWAP64(&file->hash);
            DARSHAN_BSWAP64(&file->rank);
            for(i=0; i<CP_NUM_INDICES; i++)
                DARSHAN_BSWAP64(&file->counters[i]);
            for(i=0; i<CP_F_NUM_INDICES; i++)
                DARSHAN_BSWAP64(&file->fcounters[i]);
        }
        return(1);
    }


    if(ret > 0)
    {
        /* got a short read */
        fprintf(stderr, "Error: invalid file record (too small)\n");
        return(-1);
    }

    if(ret == 0 && gzeof(fd->gzf))
    {
        /* hit end of file */
        return(0);
    }

    /* all other errors */
    err_string = gzerror(fd->gzf, &ret);
    fprintf(stderr, "Error: %s\n", err_string);
    return(-1);
}

static int getjob_internal_124(darshan_fd fd, struct darshan_job *job)
{
    return(-1);
}

static int getfile_internal_124(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file)
{

    return(-1);
}

static int getfile_internal_122(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file)
{
#if 0
    else if(strcmp(job->version_string, "1.22") == 0)
    {
        ret = gzread(fd->gzf, &file_1_22, sizeof(file_1_22));
        if(ret == sizeof(file_1_22))
        {
            /* convert to new file record structure */
            file->hash = file_1_22.hash;
            file->rank = file_1_22.rank;
            strcpy(file->name_suffix, file_1_22.name_suffix);
            memcpy(file->counters, file_1_22.counters,
                (CP_NUM_INDICES_1_22*sizeof(int64_t)));
            memcpy(file->fcounters, file_1_22.fcounters,
                (CP_F_NUM_INDICES*sizeof(double)));
            shift_missing_1_22(file);

            /* got exactly one, correct size record */
            return(1);
        }
    }
#endif
    return(-1);
}

static int getfile_internal_121(darshan_fd fd, struct darshan_job *job, 
    struct darshan_file *file)
{   
#if 0
    if(strcmp(job->version_string, "1.21") == 0)
    {
        ret = gzread(fd->gzf, &file_1_21, sizeof(file_1_21));
        if(ret == sizeof(file_1_21))
        {
            /* convert to new file record structure */
            file->hash = file_1_21.hash;
            file->rank = file_1_21.rank;
            strcpy(file->name_suffix, file_1_21.name_suffix);
            memcpy(file->counters, file_1_21.counters,
                (CP_NUM_INDICES_1_21*sizeof(int64_t)));
            memcpy(file->fcounters, file_1_21.fcounters,
                (CP_F_NUM_INDICES_1_21*sizeof(double)));
            shift_missing_1_21(file);

            /* got exactly one, correct size record */
            return(1);
        }
    }
#endif
    return(-1);
}