darshan-posix.c 65.9 KB
Newer Older
1
/*
Shane Snyder's avatar
Shane Snyder committed
2
3
4
 * Copyright (C) 2015 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
5
6
 */

7
8
9
#define _XOPEN_SOURCE 500
#define _GNU_SOURCE

10
#include "darshan-runtime-config.h"
11
12
13
14
15
16
17
18
19
20
21
22
23
24
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/uio.h>
#include <sys/mman.h>
#include <search.h>
#include <assert.h>
25
#include <libgen.h>
Philip Carns's avatar
Philip Carns committed
26
#include <aio.h>
27
#include <pthread.h>
28

29
#include "uthash.h"
30
31
#include "utlist.h"

32
#include "darshan.h"
33
#include "darshan-dynamic.h"
34

35
#ifndef HAVE_OFF64_T
36
37
typedef int64_t off64_t;
#endif
38
39
40
#ifndef HAVE_AIOCB64
#define aiocb64 aiocb
#endif
41

42
43
DARSHAN_FORWARD_DECL(open, int, (const char *path, int flags, ...));
DARSHAN_FORWARD_DECL(open64, int, (const char *path, int flags, ...));
44
45
DARSHAN_FORWARD_DECL(creat, int, (const char* path, mode_t mode));
DARSHAN_FORWARD_DECL(creat64, int, (const char* path, mode_t mode));
46
47
DARSHAN_FORWARD_DECL(fopen, FILE*, (const char *path, const char *mode));
DARSHAN_FORWARD_DECL(fopen64, FILE*, (const char *path, const char *mode));
48
49
50
51
DARSHAN_FORWARD_DECL(mkstemp, int, (char *template));
DARSHAN_FORWARD_DECL(mkostemp, int, (char *template, int flags));
DARSHAN_FORWARD_DECL(mkstemps, int, (char *template, int suffixlen));
DARSHAN_FORWARD_DECL(mkostemps, int, (char *template, int suffixlen, int flags));
52
53
54
55
56
57
58
59
DARSHAN_FORWARD_DECL(read, ssize_t, (int fd, void *buf, size_t count));
DARSHAN_FORWARD_DECL(write, ssize_t, (int fd, const void *buf, size_t count));
DARSHAN_FORWARD_DECL(pread, ssize_t, (int fd, void *buf, size_t count, off_t offset));
DARSHAN_FORWARD_DECL(pwrite, ssize_t, (int fd, const void *buf, size_t count, off_t offset));
DARSHAN_FORWARD_DECL(pread64, ssize_t, (int fd, void *buf, size_t count, off64_t offset));
DARSHAN_FORWARD_DECL(pwrite64, ssize_t, (int fd, const void *buf, size_t count, off64_t offset));
DARSHAN_FORWARD_DECL(readv, ssize_t, (int fd, const struct iovec *iov, int iovcnt));
DARSHAN_FORWARD_DECL(writev, ssize_t, (int fd, const struct iovec *iov, int iovcnt));
60
61
62
63
64
DARSHAN_FORWARD_DECL(fread, size_t, (void *ptr, size_t size, size_t nmemb, FILE *stream));
DARSHAN_FORWARD_DECL(fwrite, size_t, (const void *ptr, size_t size, size_t nmemb, FILE *stream));
DARSHAN_FORWARD_DECL(lseek, off_t, (int fd, off_t offset, int whence));
DARSHAN_FORWARD_DECL(lseek64, off64_t, (int fd, off64_t offset, int whence));
DARSHAN_FORWARD_DECL(fseek, int, (FILE *stream, long offset, int whence));
65
66
67
68
69
70
DARSHAN_FORWARD_DECL(__xstat, int, (int vers, const char* path, struct stat *buf));
DARSHAN_FORWARD_DECL(__xstat64, int, (int vers, const char* path, struct stat64 *buf));
DARSHAN_FORWARD_DECL(__lxstat, int, (int vers, const char* path, struct stat *buf));
DARSHAN_FORWARD_DECL(__lxstat64, int, (int vers, const char* path, struct stat64 *buf));
DARSHAN_FORWARD_DECL(__fxstat, int, (int vers, int fd, struct stat *buf));
DARSHAN_FORWARD_DECL(__fxstat64, int, (int vers, int fd, struct stat64 *buf));
Shane Snyder's avatar
Shane Snyder committed
71
72
DARSHAN_FORWARD_DECL(mmap, void*, (void *addr, size_t length, int prot, int flags, int fd, off_t offset));
DARSHAN_FORWARD_DECL(mmap64, void*, (void *addr, size_t length, int prot, int flags, int fd, off64_t offset));
73
74
DARSHAN_FORWARD_DECL(fsync, int, (int fd));
DARSHAN_FORWARD_DECL(fdatasync, int, (int fd));
75
DARSHAN_FORWARD_DECL(close, int, (int fd));
76
DARSHAN_FORWARD_DECL(fclose, int, (FILE *fp));
77
78
79
80
81
82
83
84
DARSHAN_FORWARD_DECL(aio_read, int, (struct aiocb *aiocbp));
DARSHAN_FORWARD_DECL(aio_write, int, (struct aiocb *aiocbp));
DARSHAN_FORWARD_DECL(aio_read64, int, (struct aiocb64 *aiocbp));
DARSHAN_FORWARD_DECL(aio_write64, int, (struct aiocb64 *aiocbp));
DARSHAN_FORWARD_DECL(aio_return, ssize_t, (struct aiocb *aiocbp));
DARSHAN_FORWARD_DECL(aio_return64, ssize_t, (struct aiocb64 *aiocbp));
DARSHAN_FORWARD_DECL(lio_listio, int, (int mode, struct aiocb *const aiocb_list[], int nitems, struct sigevent *sevp));
DARSHAN_FORWARD_DECL(lio_listio64, int, (int mode, struct aiocb64 *const aiocb_list[], int nitems, struct sigevent *sevp));
85

86
87
88
89
90
91
92
93
/* struct to track information about aio operations in flight */
struct posix_aio_tracker
{
    double tm1;
    void *aiocbp;
    struct posix_aio_tracker* next;
};

94
95
96
97
98
99
/* The posix_file_runtime structure maintains necessary runtime metadata
 * for the POSIX file record (darshan_posix_file structure, defined in
 * darshan-posix-log-format.h) pointed to by 'file_record'. This metadata
 * assists with the instrumenting of specific statistics in the file record.
 * 'hlink' is a hash table link structure used to add/remove this record
 * from the hash table of POSIX file records for this process. 
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
 *
 * RATIONALE: the POSIX module needs to track some stateful, volatile 
 * information about each open file (like the current file offset, most recent 
 * access time, etc.) to aid in instrumentation, but this information can't be
 * stored in the darshan_posix_file struct because we don't want it to appear in
 * the final darshan log file.  We therefore associate a posix_file_runtime
 * struct with each darshan_posix_file struct in order to track this information.
  *
 * NOTE: There is a one-to-one mapping of posix_file_runtime structs to
 * darshan_posix_file structs.
 *
 * NOTE: The posix_file_runtime struct contains a pointer to a darshan_posix_file
 * struct (see the *file_record member) rather than simply embedding an entire
 * darshan_posix_file struct.  This is done so that all of the darshan_posix_file
 * structs can be kept contiguous in memory as a single array to simplify
 * reduction, compression, and storage.
116
 */
117
struct posix_file_runtime
118
{
119
    struct darshan_posix_file* file_record;
120
121
122
    int64_t offset;
    int64_t last_byte_read;
    int64_t last_byte_written;
Shane Snyder's avatar
Shane Snyder committed
123
    enum darshan_io_type last_io_type;
124
125
126
    double last_meta_end;
    double last_read_end;
    double last_write_end;
127
128
129
130
    void* access_root;
    int access_count;
    void* stride_root;
    int stride_count;
131
    struct posix_aio_tracker* aio_list;
132
    UT_hash_handle hlink;
133
};
134

135
136
137
138
139
140
141
142
143
144
145
/* The posix_file_runtime_ref structure is used to associate a POSIX
 * file descriptor with an already existing POSIX file record. This is
 * necessary as many POSIX I/O functions take only an input file descriptor,
 * but POSIX file records are indexed by their full file paths (i.e., darshan
 * record identifiers for POSIX files are created by hashing the file path).
 * In other words, this structure is necessary as it allows us to look up a
 * file record either by a pathname (posix_file_runtime) or by POSIX file
 * descriptor (posix_file_runtime_ref), depending on which parameters are
 * available. This structure includes another hash table link, since separate
 * hashes are maintained for posix_file_runtime structures and posix_file_runtime_ref
 * structures.
146
147
148
149
150
151
152
153
154
155
156
 *
 * RATIONALE: In theory the fd information could be included in the
 * posix_file_runtime struct rather than in a separate structure here.  The
 * reason we don't do that is because the same file could be opened multiple
 * times by a given process with different file descriptors and thus
 * simulataneously referenced using different file descriptors.  This practice is
 * not common, but we must support it.
 *
 * NOTE: there are potentially multiple posix_file_runtime_ref structures
 * referring to a single posix_file_runtime structure.  Most of the time there is
 * only one, however.
157
 */
158
struct posix_file_runtime_ref
159
{
160
    struct posix_file_runtime* file;
161
162
163
164
    int fd;
    UT_hash_handle hlink;
};

165
166
167
168
/* The posix_runtime structure maintains necessary state for storing
 * POSIX file records and for coordinating with darshan-core at 
 * shutdown time.
 */
169
170
struct posix_runtime
{
171
    struct posix_file_runtime* file_runtime_array;
172
    struct darshan_posix_file* file_record_array;
173
    int file_array_size;
174
    int file_array_ndx;
175
176
    struct posix_file_runtime* file_hash;
    struct posix_file_runtime_ref* fd_hash;
177
178
};

179
static struct posix_runtime *posix_runtime = NULL;
180
static pthread_mutex_t posix_runtime_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
Shane Snyder's avatar
Shane Snyder committed
181
static int instrumentation_disabled = 0;
182
static int my_rank = -1;
183
static int darshan_mem_alignment = 1;
184

185
186
187
188
189
static void posix_runtime_initialize(void);
static struct posix_file_runtime* posix_file_by_name(const char *name);
static struct posix_file_runtime* posix_file_by_name_setfd(const char* name, int fd);
static struct posix_file_runtime* posix_file_by_fd(int fd);
static void posix_file_close_fd(int fd);
190
191
static void posix_aio_tracker_add(int fd, void *aiocbp);
static struct posix_aio_tracker* posix_aio_tracker_del(int fd, void *aiocbp);
192
static int posix_record_compare(const void* a, const void* b);
193
194
static void posix_record_reduction_op(void* infile_v, void* inoutfile_v,
    int *len, MPI_Datatype *datatype);
195
196
197
static void posix_shared_record_variance(MPI_Comm mod_comm,
    struct darshan_posix_file *inrec_array, struct darshan_posix_file *outrec_array,
    int shared_rec_count);
198
199
200
201

static void posix_begin_shutdown(void);
static void posix_get_output_data(MPI_Comm mod_comm, darshan_record_id *shared_recs,
    int shared_rec_count, void **posix_buf, int *posix_buf_sz);
202
203
static void posix_shutdown(void);

204
205
#define POSIX_LOCK() pthread_mutex_lock(&posix_runtime_mutex)
#define POSIX_UNLOCK() pthread_mutex_unlock(&posix_runtime_mutex)
206

207
#define POSIX_RECORD_OPEN(__ret, __path, __mode, __stream_flag, __tm1, __tm2) do { \
208
    struct posix_file_runtime* file; \
209
210
211
    char* exclude; \
    int tmp_index = 0; \
    if(__ret < 0) break; \
212
    while((exclude = darshan_path_exclusions[tmp_index])) { \
213
214
215
216
217
        if(!(strncmp(exclude, __path, strlen(exclude)))) \
            break; \
        tmp_index++; \
    } \
    if(exclude) break; \
218
    file = posix_file_by_name_setfd(__path, __ret); \
219
    if(!file) break; \
220
    if(__mode) \
221
        file->file_record->counters[POSIX_MODE] = __mode; \
222
223
224
    file->offset = 0; \
    file->last_byte_written = 0; \
    file->last_byte_read = 0; \
225
    if(__stream_flag)\
226
        file->file_record->counters[POSIX_FOPENS] += 1; \
227
    else \
228
229
230
231
        file->file_record->counters[POSIX_OPENS] += 1; \
    if(file->file_record->fcounters[POSIX_F_OPEN_TIMESTAMP] == 0) \
        file->file_record->fcounters[POSIX_F_OPEN_TIMESTAMP] = __tm1; \
    DARSHAN_TIMER_INC_NO_OVERLAP(file->file_record->fcounters[POSIX_F_META_TIME], __tm1, __tm2, file->last_meta_end); \
232
233
234
} while(0)

#define POSIX_RECORD_READ(__ret, __fd, __pread_flag, __pread_offset, __aligned, __stream_flag, __tm1, __tm2) do{ \
235
    size_t stride; \
236
    int64_t this_offset; \
237
    struct posix_file_runtime* file; \
238
    int64_t file_alignment; \
239
240
241
242
    double __elapsed = __tm2-__tm1; \
    if(__ret < 0) break; \
    file = posix_file_by_fd(__fd); \
    if(!file) break; \
243
    if(__pread_flag) \
244
245
246
247
        this_offset = __pread_offset; \
    else \
        this_offset = file->offset; \
    if(this_offset > file->last_byte_read) \
248
        file->file_record->counters[POSIX_SEQ_READS] += 1;  \
249
    if(this_offset == (file->last_byte_read + 1)) \
250
        file->file_record->counters[POSIX_CONSEC_READS] += 1;  \
251
    if(this_offset > 0 && this_offset > file->last_byte_read \
252
253
254
        && file->last_byte_read != 0) \
        stride = this_offset - file->last_byte_read - 1; \
    else \
255
        stride = 0; \
256
257
    file->last_byte_read = this_offset + __ret - 1; \
    file->offset = this_offset + __ret; \
258
259
260
261
262
263
264
265
266
267
    if(file->file_record->counters[POSIX_MAX_BYTE_READ] < (this_offset + __ret - 1)) \
        file->file_record->counters[POSIX_MAX_BYTE_READ] = (this_offset + __ret - 1); \
    file->file_record->counters[POSIX_BYTES_READ] += __ret; \
    if(__stream_flag) \
        file->file_record->counters[POSIX_FREADS] += 1; \
    else \
        file->file_record->counters[POSIX_READS] += 1; \
    DARSHAN_BUCKET_INC(&(file->file_record->counters[POSIX_SIZE_READ_0_100]), __ret); \
    darshan_common_val_counter(&file->access_root, &file->access_count, __ret); \
    darshan_common_val_counter(&file->stride_root, &file->stride_count, stride); \
268
    if(!__aligned) \
269
270
        file->file_record->counters[POSIX_MEM_NOT_ALIGNED] += 1; \
    file_alignment = file->file_record->counters[POSIX_FILE_ALIGNMENT]; \
271
    if(file_alignment > 0 && (this_offset % file_alignment) != 0) \
272
        file->file_record->counters[POSIX_FILE_NOT_ALIGNED] += 1; \
Shane Snyder's avatar
Shane Snyder committed
273
    if(file->last_io_type == DARSHAN_IO_WRITE) \
274
        file->file_record->counters[POSIX_RW_SWITCHES] += 1; \
Shane Snyder's avatar
Shane Snyder committed
275
    file->last_io_type = DARSHAN_IO_READ; \
276
277
278
279
280
281
282
    if(file->file_record->fcounters[POSIX_F_READ_START_TIMESTAMP] == 0) \
        file->file_record->fcounters[POSIX_F_READ_START_TIMESTAMP] = __tm1; \
    file->file_record->fcounters[POSIX_F_READ_END_TIMESTAMP] = __tm2; \
    if(file->file_record->fcounters[POSIX_F_MAX_READ_TIME] < __elapsed) { \
        file->file_record->fcounters[POSIX_F_MAX_READ_TIME] = __elapsed; \
        file->file_record->counters[POSIX_MAX_READ_TIME_SIZE] = __ret; } \
    DARSHAN_TIMER_INC_NO_OVERLAP(file->file_record->fcounters[POSIX_F_READ_TIME], __tm1, __tm2, file->last_read_end); \
283
284
285
} while(0)

#define POSIX_RECORD_WRITE(__ret, __fd, __pwrite_flag, __pwrite_offset, __aligned, __stream_flag, __tm1, __tm2) do{ \
286
    size_t stride; \
287
    int64_t this_offset; \
288
    struct posix_file_runtime* file; \
289
    int64_t file_alignment; \
290
291
292
293
    double __elapsed = __tm2-__tm1; \
    if(__ret < 0) break; \
    file = posix_file_by_fd(__fd); \
    if(!file) break; \
294
    if(__pwrite_flag) \
295
296
297
298
        this_offset = __pwrite_offset; \
    else \
        this_offset = file->offset; \
    if(this_offset > file->last_byte_written) \
299
        file->file_record->counters[POSIX_SEQ_WRITES] += 1; \
300
    if(this_offset == (file->last_byte_written + 1)) \
301
        file->file_record->counters[POSIX_CONSEC_WRITES] += 1; \
302
    if(this_offset > 0 && this_offset > file->last_byte_written \
303
304
        && file->last_byte_written != 0) \
        stride = this_offset - file->last_byte_written - 1; \
305
    else \
306
        stride = 0; \
307
308
    file->last_byte_written = this_offset + __ret - 1; \
    file->offset = this_offset + __ret; \
309
310
311
    if(file->file_record->counters[POSIX_MAX_BYTE_WRITTEN] < (this_offset + __ret - 1)) \
        file->file_record->counters[POSIX_MAX_BYTE_WRITTEN] = (this_offset + __ret - 1); \
    file->file_record->counters[POSIX_BYTES_WRITTEN] += __ret; \
312
    if(__stream_flag) \
313
        file->file_record->counters[POSIX_FWRITES] += 1; \
314
    else \
315
316
317
318
        file->file_record->counters[POSIX_WRITES] += 1; \
    DARSHAN_BUCKET_INC(&(file->file_record->counters[POSIX_SIZE_WRITE_0_100]), __ret); \
    darshan_common_val_counter(&file->access_root, &file->access_count, __ret); \
    darshan_common_val_counter(&file->stride_root, &file->stride_count, stride); \
319
    if(!__aligned) \
320
321
        file->file_record->counters[POSIX_MEM_NOT_ALIGNED] += 1; \
    file_alignment = file->file_record->counters[POSIX_FILE_ALIGNMENT]; \
322
    if(file_alignment > 0 && (this_offset % file_alignment) != 0) \
323
        file->file_record->counters[POSIX_FILE_NOT_ALIGNED] += 1; \
Shane Snyder's avatar
Shane Snyder committed
324
    if(file->last_io_type == DARSHAN_IO_READ) \
325
        file->file_record->counters[POSIX_RW_SWITCHES] += 1; \
Shane Snyder's avatar
Shane Snyder committed
326
    file->last_io_type = DARSHAN_IO_WRITE; \
327
328
329
330
331
332
333
    if(file->file_record->fcounters[POSIX_F_WRITE_START_TIMESTAMP] == 0) \
        file->file_record->fcounters[POSIX_F_WRITE_START_TIMESTAMP] = __tm1; \
    file->file_record->fcounters[POSIX_F_WRITE_END_TIMESTAMP] = __tm2; \
    if(file->file_record->fcounters[POSIX_F_MAX_WRITE_TIME] < __elapsed) { \
        file->file_record->fcounters[POSIX_F_MAX_WRITE_TIME] = __elapsed; \
        file->file_record->counters[POSIX_MAX_WRITE_TIME_SIZE] = __ret; } \
    DARSHAN_TIMER_INC_NO_OVERLAP(file->file_record->fcounters[POSIX_F_WRITE_TIME], __tm1, __tm2, file->last_write_end); \
334
} while(0)
335

336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
#define POSIX_LOOKUP_RECORD_STAT(__path, __statbuf, __tm1, __tm2) do { \
    char* exclude; \
    int tmp_index = 0; \
    struct posix_file_runtime* file; \
    while((exclude = darshan_path_exclusions[tmp_index])) { \
        if(!(strncmp(exclude, __path, strlen(exclude)))) \
            break; \
        tmp_index++; \
    } \
    if(exclude) break; \
    file = posix_file_by_name(__path); \
    if(file) \
    { \
        POSIX_RECORD_STAT(file, __statbuf, __tm1, __tm2); \
    } \
} while(0)

#define POSIX_RECORD_STAT(__file, __statbuf, __tm1, __tm2) do { \
354
355
    DARSHAN_TIMER_INC_NO_OVERLAP((__file)->file_record->fcounters[POSIX_F_META_TIME], __tm1, __tm2, (__file)->last_meta_end); \
    (__file)->file_record->counters[POSIX_STATS] += 1; \
356
357
} while(0)

358
359
360
361
/**********************************************************
 *      Wrappers for POSIX I/O functions of interest      * 
 **********************************************************/

362
int DARSHAN_DECL(open)(const char *path, int flags, ...)
363
364
365
366
367
{
    int mode = 0;
    int ret;
    double tm1, tm2;

368
369
    MAP_OR_FAIL(open);

370
    if(flags & O_CREAT) 
371
372
373
374
375
376
    {
        va_list arg;
        va_start(arg, flags);
        mode = va_arg(arg, int);
        va_end(arg);

377
        tm1 = darshan_core_wtime();
378
        ret = __real_open(path, flags, mode);
379
        tm2 = darshan_core_wtime();
380
381
382
    }
    else
    {
383
        tm1 = darshan_core_wtime();
384
        ret = __real_open(path, flags);
385
        tm2 = darshan_core_wtime();
386
387
    }

388
389
    POSIX_LOCK();
    posix_runtime_initialize();
390
    POSIX_RECORD_OPEN(ret, path, mode, 0, tm1, tm2);
391
    POSIX_UNLOCK();
392
393
394
395

    return(ret);
}

Shane Snyder's avatar
Shane Snyder committed
396
397
398
399
400
401
int DARSHAN_DECL(open64)(const char *path, int flags, ...)
{
    int mode = 0;
    int ret;
    double tm1, tm2;

402
    MAP_OR_FAIL(open64);
Shane Snyder's avatar
Shane Snyder committed
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423

    if(flags & O_CREAT)
    {
        va_list arg;
        va_start(arg, flags);
        mode = va_arg(arg, int);
        va_end(arg);

        tm1 = darshan_core_wtime();
        ret = __real_open64(path, flags, mode);
        tm2 = darshan_core_wtime();
    }
    else
    {
        tm1 = darshan_core_wtime();
        ret = __real_open64(path, flags);
        tm2 = darshan_core_wtime();
    }

    POSIX_LOCK();
    posix_runtime_initialize();
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
    POSIX_RECORD_OPEN(ret, path, mode, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(creat)(const char* path, mode_t mode)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(creat);

    tm1 = darshan_core_wtime();
    ret = __real_creat(path, mode);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(ret, path, mode, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(creat64)(const char* path, mode_t mode)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(creat64);
Shane Snyder's avatar
Shane Snyder committed
455

456
457
458
459
460
461
    tm1 = darshan_core_wtime();
    ret = __real_creat64(path, mode);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
Shane Snyder's avatar
Shane Snyder committed
462
463
464
465
466
467
    POSIX_RECORD_OPEN(ret, path, mode, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
FILE* DARSHAN_DECL(fopen)(const char *path, const char *mode)
{
    FILE* ret;
    int fd;
    double tm1, tm2;

    MAP_OR_FAIL(fopen);

    tm1 = darshan_core_wtime();
    ret = __real_fopen(path, mode);
    tm2 = darshan_core_wtime();

    if(ret == NULL)
        fd = -1;
    else
        fd = fileno(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(fd, path, 0, 1, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

FILE* DARSHAN_DECL(fopen64)(const char *path, const char *mode)
{
    FILE* ret;
    int fd;
    double tm1, tm2;

    MAP_OR_FAIL(fopen64);

    tm1 = darshan_core_wtime();
    ret = __real_fopen64(path, mode);
    tm2 = darshan_core_wtime();

    if(ret == NULL)
        fd = -1;
    else
        fd = fileno(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(fd, path, 0, 1, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

518
519
520
521
522
523
524
525
526
527
528
529
530
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
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
int DARSHAN_DECL(mkstemp)(char* template)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(mkstemp);

    tm1 = darshan_core_wtime();
    ret = __real_mkstemp(template);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(ret, template, 0, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(mkostemp)(char* template, int flags)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(mkostemp);

    tm1 = darshan_core_wtime();
    ret = __real_mkostemp(template, flags);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(ret, template, 0, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(mkstemps)(char* template, int suffixlen)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(mkstemps);

    tm1 = darshan_core_wtime();
    ret = __real_mkstemps(template, suffixlen);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(ret, template, 0, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(mkostemps)(char* template, int suffixlen, int flags)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(mkostemps);

    tm1 = darshan_core_wtime();
    ret = __real_mkostemps(template, suffixlen, flags);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_OPEN(ret, template, 0, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

594
595
596
597
598
599
ssize_t DARSHAN_DECL(read)(int fd, void *buf, size_t count)
{
    ssize_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

Shane Snyder's avatar
Shane Snyder committed
600
    MAP_OR_FAIL(read);
601

602
    if((unsigned long)buf % darshan_mem_alignment == 0) aligned_flag = 1;
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623

    tm1 = darshan_core_wtime();
    ret = __real_read(fd, buf, count);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_READ(ret, fd, 0, 0, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(write)(int fd, const void *buf, size_t count)
{
    ssize_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(write);

624
    if((unsigned long)buf % darshan_mem_alignment == 0) aligned_flag = 1;
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645

    tm1 = darshan_core_wtime();
    ret = __real_write(fd, buf, count);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_WRITE(ret, fd, 0, 0, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(pread)(int fd, void *buf, size_t count, off_t offset)
{
    ssize_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(pread);

646
    if((unsigned long)buf % darshan_mem_alignment == 0) aligned_flag = 1;
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667

    tm1 = darshan_core_wtime();
    ret = __real_pread(fd, buf, count, offset);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_READ(ret, fd, 1, offset, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(pwrite)(int fd, const void *buf, size_t count, off_t offset)
{
    ssize_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(pwrite);

668
    if((unsigned long)buf % darshan_mem_alignment == 0) aligned_flag = 1;
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689

    tm1 = darshan_core_wtime();
    ret = __real_pwrite(fd, buf, count, offset);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_WRITE(ret, fd, 1, offset, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(pread64)(int fd, void *buf, size_t count, off64_t offset)
{
    ssize_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(pread64);

690
    if((unsigned long)buf % darshan_mem_alignment == 0) aligned_flag = 1;
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711

    tm1 = darshan_core_wtime();
    ret = __real_pread64(fd, buf, count, offset);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_READ(ret, fd, 1, offset, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(pwrite64)(int fd, const void *buf, size_t count, off64_t offset)
{
    ssize_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(pwrite64);

712
    if((unsigned long)buf % darshan_mem_alignment == 0) aligned_flag = 1;
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728

    tm1 = darshan_core_wtime();
    ret = __real_pwrite64(fd, buf, count, offset);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_RECORD_WRITE(ret, fd, 1, offset, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(readv)(int fd, const struct iovec *iov, int iovcnt)
{
    ssize_t ret;
729
    int aligned_flag = 1;
730
731
732
733
    int i;
    double tm1, tm2;

    MAP_OR_FAIL(readv);
734

735
736
737
738
    for(i=0; i<iovcnt; i++)
    {
        if(((unsigned long)iov[i].iov_base % darshan_mem_alignment) != 0)
            aligned_flag = 0;
739
    }
740
741
742
743
744
745

    tm1 = darshan_core_wtime();
    ret = __real_readv(fd, iov, iovcnt);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
746
    posix_runtime_initialize();
747
748
749
750
751
752
753
754
755
    POSIX_RECORD_READ(ret, fd, 0, 0, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(writev)(int fd, const struct iovec *iov, int iovcnt)
{
    ssize_t ret;
756
    int aligned_flag = 1;
757
758
759
760
    int i;
    double tm1, tm2;

    MAP_OR_FAIL(writev);
761

762
763
764
765
    for(i=0; i<iovcnt; i++)
    {
        if(((unsigned long)iov[i].iov_base % darshan_mem_alignment) != 0)
            aligned_flag = 0;
766
    }
767
768
769
770
771
772

    tm1 = darshan_core_wtime();
    ret = __real_writev(fd, iov, iovcnt);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
773
    posix_runtime_initialize();
774
775
776
777
778
779
    POSIX_RECORD_WRITE(ret, fd, 0, 0, aligned_flag, 0, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

780
781
782
783
784
785
786
787
size_t DARSHAN_DECL(fread)(void *ptr, size_t size, size_t nmemb, FILE *stream)
{
    size_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(fread);

788
    if((unsigned long)ptr % darshan_mem_alignment == 0) aligned_flag = 1;
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818

    tm1 = darshan_core_wtime();
    ret = __real_fread(ptr, size, nmemb, stream);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    if(ret > 0)
    {
        POSIX_RECORD_READ(size*ret, fileno(stream), 0, 0,
            aligned_flag, 1, tm1, tm2);
    }
    else
    {
        POSIX_RECORD_READ(ret, fileno(stream), 0, 0,
            aligned_flag, 1, tm1, tm2);
    }
    POSIX_UNLOCK();

    return(ret);
}

size_t DARSHAN_DECL(fwrite)(const void *ptr, size_t size, size_t nmemb, FILE *stream)
{
    size_t ret;
    int aligned_flag = 0;
    double tm1, tm2;

    MAP_OR_FAIL(fwrite);

819
    if((unsigned long)ptr % darshan_mem_alignment == 0) aligned_flag = 1;
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861

    tm1 = darshan_core_wtime();
    ret = __real_fwrite(ptr, size, nmemb, stream);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    if(ret > 0)
    {
        POSIX_RECORD_WRITE(size*ret, fileno(stream), 0, 0,
            aligned_flag, 1, tm1, tm2);
    }
    else
    {
        POSIX_RECORD_WRITE(ret, fileno(stream), 0, 0,
            aligned_flag, 1, tm1, tm2);
    }
    POSIX_UNLOCK();

    return(ret);
}

off_t DARSHAN_DECL(lseek)(int fd, off_t offset, int whence)
{
    off_t ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(lseek);

    tm1 = darshan_core_wtime();
    ret = __real_lseek(fd, offset, whence);
    tm2 = darshan_core_wtime();

    if(ret >= 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        file = posix_file_by_fd(fd);
        if(file)
        {
            file->offset = ret;
862
863
864
865
            DARSHAN_TIMER_INC_NO_OVERLAP(
                file->file_record->fcounters[POSIX_F_META_TIME],
                tm1, tm2, file->last_meta_end);
            file->file_record->counters[POSIX_SEEKS] += 1;
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
        }
        POSIX_UNLOCK();
    }

    return(ret);
}

off_t DARSHAN_DECL(lseek64)(int fd, off_t offset, int whence)
{
    off_t ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(lseek64);

    tm1 = darshan_core_wtime();
    ret = __real_lseek64(fd, offset, whence);
    tm2 = darshan_core_wtime();

    if(ret >= 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        file = posix_file_by_fd(fd);
        if(file)
        {
            file->offset = ret;
893
894
895
896
            DARSHAN_TIMER_INC_NO_OVERLAP(
                file->file_record->fcounters[POSIX_F_META_TIME],
                tm1, tm2, file->last_meta_end);
            file->file_record->counters[POSIX_SEEKS] += 1;
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
        }
        POSIX_UNLOCK();
    }

    return(ret);
}

int DARSHAN_DECL(fseek)(FILE *stream, long offset, int whence)
{
    int ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(fseek);

    tm1 = darshan_core_wtime();
    ret = __real_fseek(stream, offset, whence);
    tm2 = darshan_core_wtime();

    if(ret >= 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        file = posix_file_by_fd(fileno(stream));
        if(file)
        {
923
            file->offset = ftell(stream);
924
925
926
927
            DARSHAN_TIMER_INC_NO_OVERLAP(
                file->file_record->fcounters[POSIX_F_META_TIME],
                tm1, tm2, file->last_meta_end);
            file->file_record->counters[POSIX_FSEEKS] += 1;
928
929
930
931
932
933
934
        }
        POSIX_UNLOCK();
    }

    return(ret);
}

935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
int DARSHAN_DECL(__xstat)(int vers, const char *path, struct stat *buf)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(__xstat);

    tm1 = darshan_core_wtime();
    ret = __real___xstat(vers, path, buf);
    tm2 = darshan_core_wtime();

    if(ret < 0 || !S_ISREG(buf->st_mode))
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_LOOKUP_RECORD_STAT(path, buf, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(__xstat64)(int vers, const char *path, struct stat64 *buf)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(__xstat64);

    tm1 = darshan_core_wtime();
    ret = __real___xstat64(vers, path, buf);
    tm2 = darshan_core_wtime();

    if(ret < 0 || !S_ISREG(buf->st_mode))
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_LOOKUP_RECORD_STAT(path, buf, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(__lxstat)(int vers, const char *path, struct stat *buf)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(__lxstat);

    tm1 = darshan_core_wtime();
    ret = __real___lxstat(vers, path, buf);
    tm2 = darshan_core_wtime();

    if(ret < 0 || !S_ISREG(buf->st_mode))
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_LOOKUP_RECORD_STAT(path, buf, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(__lxstat64)(int vers, const char *path, struct stat64 *buf)
{
    int ret;
    double tm1, tm2;

    MAP_OR_FAIL(__lxstat64);

    tm1 = darshan_core_wtime();
    ret = __real___lxstat64(vers, path, buf);
    tm2 = darshan_core_wtime();

    if(ret < 0 || !S_ISREG(buf->st_mode))
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    POSIX_LOOKUP_RECORD_STAT(path, buf, tm1, tm2);
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(__fxstat)(int vers, int fd, struct stat *buf)
{
    int ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(__fxstat);

    tm1 = darshan_core_wtime();
    ret = __real___fxstat(vers, fd, buf);
    tm2 = darshan_core_wtime();

    if(ret < 0 || !S_ISREG(buf->st_mode))
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
        POSIX_RECORD_STAT(file, buf, tm1, tm2);
    }
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(__fxstat64)(int vers, int fd, struct stat64 *buf)
{
    int ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(__fxstat64);

    tm1 = darshan_core_wtime();
    ret = __real___fxstat64(vers, fd, buf);
    tm2 = darshan_core_wtime();

    if(ret < 0 || !S_ISREG(buf->st_mode))
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
        POSIX_RECORD_STAT(file, buf, tm1, tm2);
    }
    POSIX_UNLOCK();

    return(ret);
}

Shane Snyder's avatar
Shane Snyder committed
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
void* DARSHAN_DECL(mmap)(void *addr, size_t length, int prot, int flags,
    int fd, off_t offset)
{
    void* ret;
    struct posix_file_runtime* file;

    MAP_OR_FAIL(mmap);

    ret = __real_mmap(addr, length, prot, flags, fd, offset);
    if(ret == MAP_FAILED)
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
1094
        file->file_record->counters[POSIX_MMAPS] += 1;
Shane Snyder's avatar
Shane Snyder committed
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
    }
    POSIX_UNLOCK();

    return(ret);
}

void* DARSHAN_DECL(mmap64)(void *addr, size_t length, int prot, int flags,
    int fd, off64_t offset)
{
    void* ret;
    struct posix_file_runtime* file;

    MAP_OR_FAIL(mmap64);

    ret = __real_mmap64(addr, length, prot, flags, fd, offset);
    if(ret == MAP_FAILED)
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
1118
        file->file_record->counters[POSIX_MMAPS] += 1;
Shane Snyder's avatar
Shane Snyder committed
1119
1120
1121
1122
1123
1124
    }
    POSIX_UNLOCK();

    return(ret);
}

1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
int DARSHAN_DECL(fsync)(int fd)
{
    int ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(fsync);

    tm1 = darshan_core_wtime();
    ret = __real_fsync(fd);
    tm2 = darshan_core_wtime();

    if(ret < 0)
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
1145
1146
1147
1148
        DARSHAN_TIMER_INC_NO_OVERLAP(
            file->file_record->fcounters[POSIX_F_WRITE_TIME],
            tm1, tm2, file->last_write_end);
        file->file_record->counters[POSIX_FSYNCS] += 1;
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
    }
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(fdatasync)(int fd)
{
    int ret;
    struct posix_file_runtime* file;
    double tm1, tm2;

    MAP_OR_FAIL(fdatasync);

    tm1 = darshan_core_wtime();
    ret = __real_fdatasync(fd);
    tm2 = darshan_core_wtime();

    if(ret < 0)
        return(ret);

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
1175
1176
1177
1178
        DARSHAN_TIMER_INC_NO_OVERLAP(
            file->file_record->fcounters[POSIX_F_WRITE_TIME],
            tm1, tm2, file->last_write_end);
        file->file_record->counters[POSIX_FDSYNCS] += 1;
1179
1180
1181
1182
1183
1184
    }
    POSIX_UNLOCK();

    return(ret);
}

1185
1186
int DARSHAN_DECL(close)(int fd)
{
1187
    struct posix_file_runtime* file;
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
    double tm1, tm2;
    int ret;

    MAP_OR_FAIL(close);

    tm1 = darshan_core_wtime();
    ret = __real_close(fd);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
Shane Snyder's avatar
Shane Snyder committed
1199
1200
1201
    file = posix_file_by_fd(fd);
    if(file)
    {
1202
1203
        file->last_byte_written = 0;
        file->last_byte_read = 0;
1204
1205
1206
1207
1208
        file->file_record->fcounters[POSIX_F_CLOSE_TIMESTAMP] =
            darshan_core_wtime();
        DARSHAN_TIMER_INC_NO_OVERLAP(
            file->file_record->fcounters[POSIX_F_META_TIME],
            tm1, tm2, file->last_meta_end);
Shane Snyder's avatar
Shane Snyder committed
1209
1210
        posix_file_close_fd(fd);
    }
1211
1212
1213
1214
1215
    POSIX_UNLOCK();    

    return(ret);
}

1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
int DARSHAN_DECL(fclose)(FILE *fp)
{
    struct posix_file_runtime* file;
    int fd = fileno(fp);
    double tm1, tm2;
    int ret;

    MAP_OR_FAIL(fclose);

    tm1 = darshan_core_wtime();
    ret = __real_fclose(fp);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    file = posix_file_by_fd(fd);
    if(file)
    {
        file->last_byte_written = 0;
        file->last_byte_read = 0;
1236
1237
1238
1239
1240
        file->file_record->fcounters[POSIX_F_CLOSE_TIMESTAMP] =
            darshan_core_wtime();
        DARSHAN_TIMER_INC_NO_OVERLAP(
            file->file_record->fcounters[POSIX_F_META_TIME],
            tm1, tm2, file->last_meta_end);
1241
1242
1243
1244
1245
1246
1247
        posix_file_close_fd(fd);
    }
    POSIX_UNLOCK();

    return(ret);
}

1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
int DARSHAN_DECL(aio_read)(struct aiocb *aiocbp)
{
    int ret;

    MAP_OR_FAIL(aio_read);

    ret = __real_aio_read(aiocbp);
    if(ret == 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        posix_aio_tracker_add(aiocbp->aio_fildes, aiocbp);
        POSIX_UNLOCK();
    }

    return(ret);
}

int DARSHAN_DECL(aio_write)(struct aiocb *aiocbp)
{
    int ret;

    MAP_OR_FAIL(aio_write);

    ret = __real_aio_write(aiocbp);
    if(ret == 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        posix_aio_tracker_add(aiocbp->aio_fildes, aiocbp);
        POSIX_UNLOCK();
    }

    return(ret);
}

int DARSHAN_DECL(aio_read64)(struct aiocb64 *aiocbp)
{
    int ret;

    MAP_OR_FAIL(aio_read64);

    ret = __real_aio_read64(aiocbp);
    if(ret == 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        posix_aio_tracker_add(aiocbp->aio_fildes, aiocbp);
        POSIX_UNLOCK();
    }

    return(ret);
}

int DARSHAN_DECL(aio_write64)(struct aiocb64 *aiocbp)
{
    int ret;

    MAP_OR_FAIL(aio_write64);

    ret = __real_aio_write64(aiocbp);
    if(ret == 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        posix_aio_tracker_add(aiocbp->aio_fildes, aiocbp);
        POSIX_UNLOCK();
    }

    return(ret);
}

ssize_t DARSHAN_DECL(aio_return)(struct aiocb *aiocbp)
{
    int ret;
    double tm2;
    struct posix_aio_tracker *tmp;
    int aligned_flag = 0;

    MAP_OR_FAIL(aio_return);

    ret = __real_aio_return(aiocbp);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    tmp = posix_aio_tracker_del(aiocbp->aio_fildes, aiocbp);
    if (tmp)
    {
        if((unsigned long)aiocbp->aio_buf % darshan_mem_alignment == 0)
            aligned_flag = 1;
        if(aiocbp->aio_lio_opcode == LIO_WRITE)
        {
            POSIX_RECORD_WRITE(ret, aiocbp->aio_fildes,
                1, aiocbp->aio_offset, aligned_flag, 0,
                tmp->tm1, tm2);
        }
        else if(aiocbp->aio_lio_opcode == LIO_READ)
        {
            POSIX_RECORD_READ(ret, aiocbp->aio_fildes,
                1, aiocbp->aio_offset, aligned_flag, 0,
                tmp->tm1, tm2);
        }
        free(tmp);
    }
    POSIX_UNLOCK();

    return(ret);
}

ssize_t DARSHAN_DECL(aio_return64)(struct aiocb64 *aiocbp)
{
    int ret;
    double tm2;
    struct posix_aio_tracker *tmp;
    int aligned_flag = 0;

    MAP_OR_FAIL(aio_return64);

    ret = __real_aio_return64(aiocbp);
    tm2 = darshan_core_wtime();

    POSIX_LOCK();
    posix_runtime_initialize();
    tmp = posix_aio_tracker_del(aiocbp->aio_fildes, aiocbp);
    if (tmp)
    {
        if((unsigned long)aiocbp->aio_buf % darshan_mem_alignment == 0)
            aligned_flag = 1;
        if(aiocbp->aio_lio_opcode == LIO_WRITE)
        {
            POSIX_RECORD_WRITE(ret, aiocbp->aio_fildes,
                1, aiocbp->aio_offset, aligned_flag, 0,
                tmp->tm1, tm2);
        }
        else if(aiocbp->aio_lio_opcode == LIO_READ)
        {
            POSIX_RECORD_READ(ret, aiocbp->aio_fildes,
                1, aiocbp->aio_offset, aligned_flag, 0,
                tmp->tm1, tm2);
        }
        free(tmp);
    }
    POSIX_UNLOCK();

    return(ret);
}

int DARSHAN_DECL(lio_listio)(int mode, struct aiocb *const aiocb_list[],
    int nitems, struct sigevent *sevp)
{
    int ret;
    int i;

    MAP_OR_FAIL(lio_listio);

    ret = __real_lio_listio(mode, aiocb_list, nitems, sevp);
    if(ret == 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        for(i = 0; i < nitems; i++)
        {
            posix_aio_tracker_add(aiocb_list[i]->aio_fildes, aiocb_list[i]);
        }
        POSIX_UNLOCK();
    }

    return(ret);
}

int DARSHAN_DECL(lio_listio64)(int mode, struct aiocb64 *const aiocb_list[],
    int nitems, struct sigevent *sevp)
{
    int ret;
    int i;

    MAP_OR_FAIL(lio_listio64);

    ret = __real_lio_listio64(mode, aiocb_list, nitems, sevp);
    if(ret == 0)
    {
        POSIX_LOCK();
        posix_runtime_initialize();
        for(i = 0; i < nitems; i++)
        {
            posix_aio_tracker_add(aiocb_list[i]->aio_fildes, aiocb_list[i]);
        }
        POSIX_UNLOCK();
    }

    return(ret);
}

1442
1443
1444
/**********************************************************
 * Internal functions for manipulating POSIX module state *
 **********************************************************/
1445

1446
/* initialize internal POSIX module data structures and register with darshan-core */
1447
static void posix_runtime_initialize()
1448
{
1449
1450
1451
    int mem_limit;
    struct darshan_module_funcs posix_mod_fns =
    {
1452
        .begin_shutdown = &posix_begin_shutdown,
1453
        .get_output_data = &posix_get_output_data,
1454
        .shutdown = &posix_shutdown
1455
    };
1456

Shane Snyder's avatar
Shane Snyder committed
1457
1458
    /* don't do anything if already initialized or instrumenation is disabled */
    if(posix_runtime || instrumentation_disabled)
1459
        return;
1460

1461
1462
    /* register the posix module with darshan core */
    darshan_core_register_module(
1463
        DARSHAN_POSIX_MOD,
1464
        &posix_mod_fns,
1465
        &my_rank,
1466
1467
        &mem_limit,
        &darshan_mem_alignment);
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479

    /* return if no memory assigned by darshan core */
    if(mem_limit == 0)
        return;

    posix_runtime = malloc(sizeof(*posix_runtime));
    if(!posix_runtime)
        return;
    memset(posix_runtime, 0, sizeof(*posix_runtime));

    /* set maximum number of file records according to max memory limit */
    /* NOTE: maximum number of records is based on the size of a posix file record */
1480
    /* TODO: should we base memory usage off file record or total runtime structure sizes? */
1481
    posix_runtime->file_array_size = mem_limit / sizeof(struct darshan_posix_file);
1482
    posix_runtime->file_array_ndx = 0;
1483
1484

    /* allocate array of runtime file records */
1485
    posix_runtime->file_runtime_array = malloc(posix_runtime->file_array_size *
1486
                                               sizeof(struct posix_file_runtime));
1487
1488
1489
    posix_runtime->file_record_array = malloc(posix_runtime->file_array_size *
                                              sizeof(struct darshan_posix_file));
    if(!posix_runtime->file_runtime_array || !posix_runtime->file_record_array)
1490
1491
1492
1493
    {
        posix_runtime->file_array_size = 0;
        return;
    }
1494
    memset(posix_runtime->file_runtime_array, 0, posix_runtime->file_array_size *
1495
           sizeof(struct posix_file_runtime));
1496
1497
    memset(posix_runtime->file_record_array, 0, posix_runtime->file_array_size *
           sizeof(struct darshan_posix_file));
1498
1499
1500

    return;
}
1501

1502
/* get a POSIX file record for the given file path */
1503
static struct posix_file_runtime* posix_file_by_name(const char *name)
1504
{
1505
    struct posix_file_runtime *file = NULL;
1506
    char *newname = NULL;
1507
    darshan_record_id file_id;
1508
    int file_alignment;
1509
    int limit_flag;
1510

Shane Snyder's avatar
Shane Snyder committed
1511
    if(!posix_runtime || instrumentation_disabled)
1512
        return(NULL);
1513

1514
    newname = darshan_clean_file_path(name);
1515
    if(!newname)
1516
        newname = (char*)name;
1517

1518
1519
    limit_flag = (posix_runtime->file_array_ndx >= posix_runtime->file_array_size);

1520
    /* get a unique id for this file from darshan core */
Shane Snyder's avatar
Shane Snyder committed
1521
    darshan_core_register_record(
1522
1523
        (void*)newname,
        strlen(newname),
1524
        DARSHAN_POSIX_MOD,
1525
1526
        1,
        limit_flag,
1527
1528
        &file_id,
        &file_alignment);
1529

1530
1531
    /* the file record id is set to 0 if no memory is available for tracking
     * new records -- just fall through and ignore this record
1532
1533
1534
1535
1536
1537
1538
1539
     */
    if(file_id == 0)
    {
        if(newname != name)
            free(newname);
        return(NULL);
    }

1540
    /* search the hash table for this file record, and return if found */
1541
    HASH_FIND(hlink, posix_runtime->file_hash, &file_id, sizeof(darshan_record_id), file);
1542
    if(file)
1543
    {
1544
        if(newname != name)
1545
            free(newname);
1546
        return(file);
1547
1548
    }

1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
    /* no existing record, assign a new file record from the global array */
    file = &(posix_runtime->file_runtime_array[posix_runtime->file_array_ndx]);
    file->file_record = &(posix_runtime->file_record_array[posix_runtime->file_array_ndx]);
    file->file_record->f_id = file_id;
    file->file_record->rank = my_rank;
    file->file_record->counters[POSIX_MEM_ALIGNMENT] = darshan_mem_alignment;
    file->file_record->counters[POSIX_FILE_ALIGNMENT] = file_alignment;

    /* add new record to file hash table */
    HASH_ADD(hlink, posix_runtime->file_hash, file_record->f_id, sizeof(darshan_record_id), file);
    posix_runtime->file_array_ndx++;
1560
1561

    if(newname != name)
1562
        free(newname);
1563
1564
1565
    return(file);
}

1566
1567
1568
/* get a POSIX file record for the given file path, and also create a
 * reference structure using the returned file descriptor
 */
1569
static struct posix_file_runtime* posix_file_by_name_setfd(const char* name, int fd)
1570
{
1571
1572
    struct posix_file_runtime* file;
    struct posix_file_runtime_ref* ref;
1573

Shane Snyder's avatar
Shane Snyder committed
1574
    if(!posix_runtime || instrumentation_disabled)
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585