blob: 8bfd5bcf25ee5401ce7bbeaf29e1f1868cab3509 [file] [log] [blame]
/*
* Code related to writing an iolog of what a thread is doing, and to
* later read that back and replay
*/
#include <stdio.h>
#include <stdlib.h>
#include <libgen.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#ifdef CONFIG_ZLIB
#include <zlib.h>
#endif
#include "flist.h"
#include "fio.h"
#include "verify.h"
#include "trim.h"
#include "filelock.h"
#include "lib/tp.h"
static const char iolog_ver2[] = "fio version 2 iolog";
void queue_io_piece(struct thread_data *td, struct io_piece *ipo)
{
flist_add_tail(&ipo->list, &td->io_log_list);
td->total_io_size += ipo->len;
}
void log_io_u(struct thread_data *td, struct io_u *io_u)
{
const char *act[] = { "read", "write", "sync", "datasync",
"sync_file_range", "wait", "trim" };
assert(io_u->ddir <= 6);
if (!td->o.write_iolog_file)
return;
fprintf(td->iolog_f, "%s %s %llu %lu\n", io_u->file->file_name,
act[io_u->ddir], io_u->offset,
io_u->buflen);
}
void log_file(struct thread_data *td, struct fio_file *f,
enum file_log_act what)
{
const char *act[] = { "add", "open", "close" };
assert(what < 3);
if (!td->o.write_iolog_file)
return;
/*
* this happens on the pre-open/close done before the job starts
*/
if (!td->iolog_f)
return;
fprintf(td->iolog_f, "%s %s\n", f->file_name, act[what]);
}
static void iolog_delay(struct thread_data *td, unsigned long delay)
{
unsigned long usec = utime_since_now(&td->last_issue);
unsigned long this_delay;
if (delay < usec)
return;
delay -= usec;
/*
* less than 100 usec delay, just regard it as noise
*/
if (delay < 100)
return;
while (delay && !td->terminate) {
this_delay = delay;
if (this_delay > 500000)
this_delay = 500000;
usec_sleep(td, this_delay);
delay -= this_delay;
}
}
static int ipo_special(struct thread_data *td, struct io_piece *ipo)
{
struct fio_file *f;
int ret;
/*
* Not a special ipo
*/
if (ipo->ddir != DDIR_INVAL)
return 0;
f = td->files[ipo->fileno];
switch (ipo->file_action) {
case FIO_LOG_OPEN_FILE:
ret = td_io_open_file(td, f);
if (!ret)
break;
td_verror(td, ret, "iolog open file");
return -1;
case FIO_LOG_CLOSE_FILE:
td_io_close_file(td, f);
break;
case FIO_LOG_UNLINK_FILE:
unlink(f->file_name);
break;
default:
log_err("fio: bad file action %d\n", ipo->file_action);
break;
}
return 1;
}
int read_iolog_get(struct thread_data *td, struct io_u *io_u)
{
struct io_piece *ipo;
unsigned long elapsed;
while (!flist_empty(&td->io_log_list)) {
int ret;
ipo = flist_entry(td->io_log_list.next, struct io_piece, list);
flist_del(&ipo->list);
remove_trim_entry(td, ipo);
ret = ipo_special(td, ipo);
if (ret < 0) {
free(ipo);
break;
} else if (ret > 0) {
free(ipo);
continue;
}
io_u->ddir = ipo->ddir;
if (ipo->ddir != DDIR_WAIT) {
io_u->offset = ipo->offset;
io_u->buflen = ipo->len;
io_u->file = td->files[ipo->fileno];
get_file(io_u->file);
dprint(FD_IO, "iolog: get %llu/%lu/%s\n", io_u->offset,
io_u->buflen, io_u->file->file_name);
if (ipo->delay)
iolog_delay(td, ipo->delay);
} else {
elapsed = mtime_since_genesis();
if (ipo->delay > elapsed)
usec_sleep(td, (ipo->delay - elapsed) * 1000);
}
free(ipo);
if (io_u->ddir != DDIR_WAIT)
return 0;
}
td->done = 1;
return 1;
}
void prune_io_piece_log(struct thread_data *td)
{
struct io_piece *ipo;
struct rb_node *n;
while ((n = rb_first(&td->io_hist_tree)) != NULL) {
ipo = rb_entry(n, struct io_piece, rb_node);
rb_erase(n, &td->io_hist_tree);
remove_trim_entry(td, ipo);
td->io_hist_len--;
free(ipo);
}
while (!flist_empty(&td->io_hist_list)) {
ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
flist_del(&ipo->list);
remove_trim_entry(td, ipo);
td->io_hist_len--;
free(ipo);
}
}
/*
* log a successful write, so we can unwind the log for verify
*/
void log_io_piece(struct thread_data *td, struct io_u *io_u)
{
struct rb_node **p, *parent;
struct io_piece *ipo, *__ipo;
ipo = malloc(sizeof(struct io_piece));
init_ipo(ipo);
ipo->file = io_u->file;
ipo->offset = io_u->offset;
ipo->len = io_u->buflen;
ipo->numberio = io_u->numberio;
ipo->flags = IP_F_IN_FLIGHT;
io_u->ipo = ipo;
if (io_u_should_trim(td, io_u)) {
flist_add_tail(&ipo->trim_list, &td->trim_list);
td->trim_entries++;
}
/*
* We don't need to sort the entries, if:
*
* Sequential writes, or
* Random writes that lay out the file as it goes along
*
* For both these cases, just reading back data in the order we
* wrote it out is the fastest.
*
* One exception is if we don't have a random map AND we are doing
* verifies, in that case we need to check for duplicate blocks and
* drop the old one, which we rely on the rb insert/lookup for
* handling.
*/
if (((!td->o.verifysort) || !td_random(td) || !td->o.overwrite) &&
(file_randommap(td, ipo->file) || td->o.verify == VERIFY_NONE)) {
INIT_FLIST_HEAD(&ipo->list);
flist_add_tail(&ipo->list, &td->io_hist_list);
ipo->flags |= IP_F_ONLIST;
td->io_hist_len++;
return;
}
RB_CLEAR_NODE(&ipo->rb_node);
/*
* Sort the entry into the verification list
*/
restart:
p = &td->io_hist_tree.rb_node;
parent = NULL;
while (*p) {
parent = *p;
__ipo = rb_entry(parent, struct io_piece, rb_node);
if (ipo->file < __ipo->file)
p = &(*p)->rb_left;
else if (ipo->file > __ipo->file)
p = &(*p)->rb_right;
else if (ipo->offset < __ipo->offset)
p = &(*p)->rb_left;
else if (ipo->offset > __ipo->offset)
p = &(*p)->rb_right;
else {
dprint(FD_IO, "iolog: overlap %llu/%lu, %llu/%lu",
__ipo->offset, __ipo->len,
ipo->offset, ipo->len);
td->io_hist_len--;
rb_erase(parent, &td->io_hist_tree);
remove_trim_entry(td, __ipo);
free(__ipo);
goto restart;
}
}
rb_link_node(&ipo->rb_node, parent, p);
rb_insert_color(&ipo->rb_node, &td->io_hist_tree);
ipo->flags |= IP_F_ONRB;
td->io_hist_len++;
}
void unlog_io_piece(struct thread_data *td, struct io_u *io_u)
{
struct io_piece *ipo = io_u->ipo;
if (!ipo)
return;
if (ipo->flags & IP_F_ONRB)
rb_erase(&ipo->rb_node, &td->io_hist_tree);
else if (ipo->flags & IP_F_ONLIST)
flist_del(&ipo->list);
free(ipo);
io_u->ipo = NULL;
td->io_hist_len--;
}
void trim_io_piece(struct thread_data *td, struct io_u *io_u)
{
struct io_piece *ipo = io_u->ipo;
if (!ipo)
return;
ipo->len = io_u->xfer_buflen - io_u->resid;
}
void write_iolog_close(struct thread_data *td)
{
fflush(td->iolog_f);
fclose(td->iolog_f);
free(td->iolog_buf);
td->iolog_f = NULL;
td->iolog_buf = NULL;
}
/*
* Read version 2 iolog data. It is enhanced to include per-file logging,
* syncs, etc.
*/
static int read_iolog2(struct thread_data *td, FILE *f)
{
unsigned long long offset;
unsigned int bytes;
int reads, writes, waits, fileno = 0, file_action = 0; /* stupid gcc */
char *fname, *act;
char *str, *p;
enum fio_ddir rw;
free_release_files(td);
/*
* Read in the read iolog and store it, reuse the infrastructure
* for doing verifications.
*/
str = malloc(4096);
fname = malloc(256+16);
act = malloc(256+16);
reads = writes = waits = 0;
while ((p = fgets(str, 4096, f)) != NULL) {
struct io_piece *ipo;
int r;
r = sscanf(p, "%256s %256s %llu %u", fname, act, &offset,
&bytes);
if (r == 4) {
/*
* Check action first
*/
if (!strcmp(act, "wait"))
rw = DDIR_WAIT;
else if (!strcmp(act, "read"))
rw = DDIR_READ;
else if (!strcmp(act, "write"))
rw = DDIR_WRITE;
else if (!strcmp(act, "sync"))
rw = DDIR_SYNC;
else if (!strcmp(act, "datasync"))
rw = DDIR_DATASYNC;
else if (!strcmp(act, "trim"))
rw = DDIR_TRIM;
else {
log_err("fio: bad iolog file action: %s\n",
act);
continue;
}
fileno = get_fileno(td, fname);
} else if (r == 2) {
rw = DDIR_INVAL;
if (!strcmp(act, "add")) {
fileno = add_file(td, fname, 0, 1);
file_action = FIO_LOG_ADD_FILE;
continue;
} else if (!strcmp(act, "open")) {
fileno = get_fileno(td, fname);
file_action = FIO_LOG_OPEN_FILE;
} else if (!strcmp(act, "close")) {
fileno = get_fileno(td, fname);
file_action = FIO_LOG_CLOSE_FILE;
} else {
log_err("fio: bad iolog file action: %s\n",
act);
continue;
}
} else {
log_err("bad iolog2: %s", p);
continue;
}
if (rw == DDIR_READ)
reads++;
else if (rw == DDIR_WRITE) {
/*
* Don't add a write for ro mode
*/
if (read_only)
continue;
writes++;
} else if (rw == DDIR_WAIT) {
waits++;
} else if (rw == DDIR_INVAL) {
} else if (!ddir_sync(rw)) {
log_err("bad ddir: %d\n", rw);
continue;
}
/*
* Make note of file
*/
ipo = malloc(sizeof(*ipo));
init_ipo(ipo);
ipo->ddir = rw;
if (rw == DDIR_WAIT) {
ipo->delay = offset;
} else {
ipo->offset = offset;
ipo->len = bytes;
if (rw != DDIR_INVAL && bytes > td->o.max_bs[rw])
td->o.max_bs[rw] = bytes;
ipo->fileno = fileno;
ipo->file_action = file_action;
td->o.size += bytes;
}
queue_io_piece(td, ipo);
}
free(str);
free(act);
free(fname);
if (writes && read_only) {
log_err("fio: <%s> skips replay of %d writes due to"
" read-only\n", td->o.name, writes);
writes = 0;
}
if (!reads && !writes && !waits)
return 1;
else if (reads && !writes)
td->o.td_ddir = TD_DDIR_READ;
else if (!reads && writes)
td->o.td_ddir = TD_DDIR_WRITE;
else
td->o.td_ddir = TD_DDIR_RW;
return 0;
}
/*
* open iolog, check version, and call appropriate parser
*/
static int init_iolog_read(struct thread_data *td)
{
char buffer[256], *p;
FILE *f;
int ret;
f = fopen(td->o.read_iolog_file, "r");
if (!f) {
perror("fopen read iolog");
return 1;
}
p = fgets(buffer, sizeof(buffer), f);
if (!p) {
td_verror(td, errno, "iolog read");
log_err("fio: unable to read iolog\n");
fclose(f);
return 1;
}
/*
* version 2 of the iolog stores a specific string as the
* first line, check for that
*/
if (!strncmp(iolog_ver2, buffer, strlen(iolog_ver2)))
ret = read_iolog2(td, f);
else {
log_err("fio: iolog version 1 is no longer supported\n");
ret = 1;
}
fclose(f);
return ret;
}
/*
* Set up a log for storing io patterns.
*/
static int init_iolog_write(struct thread_data *td)
{
struct fio_file *ff;
FILE *f;
unsigned int i;
f = fopen(td->o.write_iolog_file, "a");
if (!f) {
perror("fopen write iolog");
return 1;
}
/*
* That's it for writing, setup a log buffer and we're done.
*/
td->iolog_f = f;
td->iolog_buf = malloc(8192);
setvbuf(f, td->iolog_buf, _IOFBF, 8192);
/*
* write our version line
*/
if (fprintf(f, "%s\n", iolog_ver2) < 0) {
perror("iolog init\n");
return 1;
}
/*
* add all known files
*/
for_each_file(td, ff, i)
log_file(td, ff, FIO_LOG_ADD_FILE);
return 0;
}
int init_iolog(struct thread_data *td)
{
int ret = 0;
if (td->o.read_iolog_file) {
int need_swap;
/*
* Check if it's a blktrace file and load that if possible.
* Otherwise assume it's a normal log file and load that.
*/
if (is_blktrace(td->o.read_iolog_file, &need_swap))
ret = load_blktrace(td, td->o.read_iolog_file, need_swap);
else
ret = init_iolog_read(td);
} else if (td->o.write_iolog_file)
ret = init_iolog_write(td);
if (ret)
td_verror(td, EINVAL, "failed initializing iolog");
return ret;
}
void setup_log(struct io_log **log, struct log_params *p,
const char *filename)
{
struct io_log *l = malloc(sizeof(*l));
memset(l, 0, sizeof(*l));
l->nr_samples = 0;
l->max_samples = 1024;
l->log_type = p->log_type;
l->log_offset = p->log_offset;
l->log_gz = p->log_gz;
l->log_gz_store = p->log_gz_store;
l->log = malloc(l->max_samples * log_entry_sz(l));
l->avg_msec = p->avg_msec;
l->filename = strdup(filename);
l->td = p->td;
if (l->log_offset)
l->log_ddir_mask = LOG_OFFSET_SAMPLE_BIT;
INIT_FLIST_HEAD(&l->chunk_list);
if (l->log_gz && !p->td)
l->log_gz = 0;
else if (l->log_gz) {
pthread_mutex_init(&l->chunk_lock, NULL);
p->td->flags |= TD_F_COMPRESS_LOG;
}
*log = l;
}
#ifdef CONFIG_SETVBUF
static void *set_file_buffer(FILE *f)
{
size_t size = 1048576;
void *buf;
buf = malloc(size);
setvbuf(f, buf, _IOFBF, size);
return buf;
}
static void clear_file_buffer(void *buf)
{
free(buf);
}
#else
static void *set_file_buffer(FILE *f)
{
return NULL;
}
static void clear_file_buffer(void *buf)
{
}
#endif
void free_log(struct io_log *log)
{
free(log->log);
free(log->filename);
free(log);
}
static void flush_samples(FILE *f, void *samples, uint64_t sample_size)
{
struct io_sample *s;
int log_offset;
uint64_t i, nr_samples;
if (!sample_size)
return;
s = __get_sample(samples, 0, 0);
log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0;
nr_samples = sample_size / __log_entry_sz(log_offset);
for (i = 0; i < nr_samples; i++) {
s = __get_sample(samples, log_offset, i);
if (!log_offset) {
fprintf(f, "%lu, %lu, %u, %u\n",
(unsigned long) s->time,
(unsigned long) s->val,
io_sample_ddir(s), s->bs);
} else {
struct io_sample_offset *so = (void *) s;
fprintf(f, "%lu, %lu, %u, %u, %llu\n",
(unsigned long) s->time,
(unsigned long) s->val,
io_sample_ddir(s), s->bs,
(unsigned long long) so->offset);
}
}
}
#ifdef CONFIG_ZLIB
struct iolog_flush_data {
struct tp_work work;
struct io_log *log;
void *samples;
uint64_t nr_samples;
};
struct iolog_compress {
struct flist_head list;
void *buf;
size_t len;
unsigned int seq;
};
#define GZ_CHUNK 131072
static struct iolog_compress *get_new_chunk(unsigned int seq)
{
struct iolog_compress *c;
c = malloc(sizeof(*c));
INIT_FLIST_HEAD(&c->list);
c->buf = malloc(GZ_CHUNK);
c->len = 0;
c->seq = seq;
return c;
}
static void free_chunk(struct iolog_compress *ic)
{
free(ic->buf);
free(ic);
}
static int z_stream_init(z_stream *stream, int gz_hdr)
{
int wbits = 15;
stream->zalloc = Z_NULL;
stream->zfree = Z_NULL;
stream->opaque = Z_NULL;
stream->next_in = Z_NULL;
if (gz_hdr)
wbits += 32;
if (inflateInit2(stream, wbits) != Z_OK)
return 1;
return 0;
}
struct flush_chunk_iter {
unsigned int seq;
void *buf;
size_t buf_size;
size_t buf_used;
size_t chunk_sz;
};
static void finish_chunk(z_stream *stream, FILE *f,
struct flush_chunk_iter *iter)
{
int ret;
ret = inflateEnd(stream);
if (ret != Z_OK)
log_err("fio: failed to end log inflation (%d)\n", ret);
flush_samples(f, iter->buf, iter->buf_used);
free(iter->buf);
iter->buf = NULL;
iter->buf_size = iter->buf_used = 0;
}
static int flush_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
z_stream *stream, struct flush_chunk_iter *iter)
{
if (ic->seq != iter->seq) {
if (iter->seq)
finish_chunk(stream, f, iter);
z_stream_init(stream, gz_hdr);
iter->seq = ic->seq;
}
stream->avail_in = ic->len;
stream->next_in = ic->buf;
if (!iter->buf_size) {
iter->buf_size = iter->chunk_sz;
iter->buf = malloc(iter->buf_size);
}
while (stream->avail_in) {
size_t this_out = iter->buf_size - iter->buf_used;
int err;
stream->avail_out = this_out;
stream->next_out = iter->buf + iter->buf_used;
err = inflate(stream, Z_NO_FLUSH);
if (err < 0) {
log_err("fio: failed inflating log: %d\n", err);
break;
}
iter->buf_used += this_out - stream->avail_out;
if (!stream->avail_out) {
iter->buf_size += iter->chunk_sz;
iter->buf = realloc(iter->buf, iter->buf_size);
continue;
}
if (err == Z_STREAM_END)
break;
}
return 0;
}
static void flush_gz_chunks(struct io_log *log, FILE *f)
{
struct flush_chunk_iter iter = { .chunk_sz = log->log_gz, };
struct flist_head *node;
z_stream stream;
while (!flist_empty(&log->chunk_list)) {
struct iolog_compress *ic;
node = log->chunk_list.next;
ic = flist_entry(node, struct iolog_compress, list);
flist_del(&ic->list);
if (log->log_gz_store)
fwrite(ic->buf, ic->len, 1, f);
else
flush_chunk(ic, log->log_gz_store, f, &stream, &iter);
free_chunk(ic);
}
if (iter.seq) {
finish_chunk(&stream, f, &iter);
free(iter.buf);
}
}
int iolog_file_inflate(const char *file)
{
struct flush_chunk_iter iter = { .chunk_sz = 64 * 1024 * 1024, };
struct iolog_compress ic;
z_stream stream;
struct stat sb;
ssize_t ret;
FILE *f;
f = fopen(file, "r");
if (!f) {
perror("fopen");
return 1;
}
if (stat(file, &sb) < 0) {
fclose(f);
perror("stat");
return 1;
}
ic.buf = malloc(sb.st_size);
ic.len = sb.st_size;
ic.seq = 1;
ret = fread(ic.buf, ic.len, 1, f);
if (ret < 0) {
perror("fread");
fclose(f);
return 1;
} else if (ret != 1) {
log_err("fio: short read on reading log\n");
fclose(f);
return 1;
}
fclose(f);
flush_chunk(&ic, 1, stdout, &stream, &iter);
if (iter.seq) {
finish_chunk(&stream, stdout, &iter);
free(iter.buf);
}
free(ic.buf);
return 0;
}
#else
static void flush_gz_chunks(struct io_log *log, FILE *f)
{
}
#endif
void flush_log(struct io_log *log)
{
void *buf;
FILE *f;
f = fopen(log->filename, "w");
if (!f) {
perror("fopen log");
return;
}
buf = set_file_buffer(f);
flush_gz_chunks(log, f);
flush_samples(f, log->log, log->nr_samples * log_entry_sz(log));
fclose(f);
clear_file_buffer(buf);
}
static int finish_log(struct thread_data *td, struct io_log *log, int trylock)
{
if (td->tp_data)
iolog_flush(log, 1);
if (trylock) {
if (fio_trylock_file(log->filename))
return 1;
} else
fio_lock_file(log->filename);
if (td->client_type == FIO_CLIENT_TYPE_GUI)
fio_send_iolog(td, log, log->filename);
else
flush_log(log);
fio_unlock_file(log->filename);
free_log(log);
return 0;
}
#ifdef CONFIG_ZLIB
static int gz_work(struct tp_work *work)
{
struct iolog_flush_data *data;
struct iolog_compress *c;
struct flist_head list;
unsigned int seq;
z_stream stream;
size_t total = 0;
int ret;
INIT_FLIST_HEAD(&list);
data = container_of(work, struct iolog_flush_data, work);
stream.zalloc = Z_NULL;
stream.zfree = Z_NULL;
stream.opaque = Z_NULL;
ret = deflateInit(&stream, Z_DEFAULT_COMPRESSION);
if (ret != Z_OK) {
log_err("fio: failed to init gz stream\n");
return 0;
}
seq = ++data->log->chunk_seq;
stream.next_in = (void *) data->samples;
stream.avail_in = data->nr_samples * log_entry_sz(data->log);
do {
c = get_new_chunk(seq);
stream.avail_out = GZ_CHUNK;
stream.next_out = c->buf;
ret = deflate(&stream, Z_NO_FLUSH);
if (ret < 0) {
log_err("fio: deflate log (%d)\n", ret);
break;
}
c->len = GZ_CHUNK - stream.avail_out;
flist_add_tail(&c->list, &list);
total += c->len;
} while (stream.avail_in);
stream.next_out = c->buf + c->len;
stream.avail_out = GZ_CHUNK - c->len;
ret = deflate(&stream, Z_FINISH);
if (ret == Z_STREAM_END)
c->len = GZ_CHUNK - stream.avail_out;
else {
do {
c = get_new_chunk(seq);
stream.avail_out = GZ_CHUNK;
stream.next_out = c->buf;
ret = deflate(&stream, Z_FINISH);
c->len = GZ_CHUNK - stream.avail_out;
flist_add_tail(&c->list, &list);
} while (ret != Z_STREAM_END);
}
ret = deflateEnd(&stream);
if (ret != Z_OK)
log_err("fio: deflateEnd %d\n", ret);
free(data->samples);
if (!flist_empty(&list)) {
pthread_mutex_lock(&data->log->chunk_lock);
flist_splice_tail(&list, &data->log->chunk_list);
pthread_mutex_unlock(&data->log->chunk_lock);
}
if (work->wait) {
work->done = 1;
pthread_cond_signal(&work->cv);
} else
free(data);
return 0;
}
int iolog_flush(struct io_log *log, int wait)
{
struct tp_data *tdat = log->td->tp_data;
struct iolog_flush_data *data;
size_t sample_size;
data = malloc(sizeof(*data));
if (!data)
return 1;
data->log = log;
sample_size = log->nr_samples * log_entry_sz(log);
data->samples = malloc(sample_size);
if (!data->samples) {
free(data);
return 1;
}
memcpy(data->samples, log->log, sample_size);
data->nr_samples = log->nr_samples;
data->work.fn = gz_work;
log->nr_samples = 0;
if (wait) {
pthread_mutex_init(&data->work.lock, NULL);
pthread_cond_init(&data->work.cv, NULL);
data->work.wait = 1;
} else
data->work.wait = 0;
tp_queue_work(tdat, &data->work);
if (wait) {
pthread_mutex_lock(&data->work.lock);
while (!data->work.done)
pthread_cond_wait(&data->work.cv, &data->work.lock);
pthread_mutex_unlock(&data->work.lock);
free(data);
}
return 0;
}
#else
int iolog_flush(struct io_log *log, int wait)
{
return 1;
}
#endif
static int write_iops_log(struct thread_data *td, int try)
{
struct io_log *log = td->iops_log;
if (!log)
return 0;
return finish_log(td, log, try);
}
static int write_slat_log(struct thread_data *td, int try)
{
struct io_log *log = td->slat_log;
if (!log)
return 0;
return finish_log(td, log, try);
}
static int write_clat_log(struct thread_data *td, int try)
{
struct io_log *log = td->clat_log;
if (!log)
return 0;
return finish_log(td, log, try);
}
static int write_lat_log(struct thread_data *td, int try)
{
struct io_log *log = td->lat_log;
if (!log)
return 0;
return finish_log(td, log, try);
}
static int write_bandw_log(struct thread_data *td, int try)
{
struct io_log *log = td->bw_log;
if (!log)
return 0;
return finish_log(td, log, try);
}
enum {
BW_LOG_MASK = 1,
LAT_LOG_MASK = 2,
SLAT_LOG_MASK = 4,
CLAT_LOG_MASK = 8,
IOPS_LOG_MASK = 16,
ALL_LOG_NR = 5,
};
struct log_type {
unsigned int mask;
int (*fn)(struct thread_data *, int);
};
static struct log_type log_types[] = {
{
.mask = BW_LOG_MASK,
.fn = write_bandw_log,
},
{
.mask = LAT_LOG_MASK,
.fn = write_lat_log,
},
{
.mask = SLAT_LOG_MASK,
.fn = write_slat_log,
},
{
.mask = CLAT_LOG_MASK,
.fn = write_clat_log,
},
{
.mask = IOPS_LOG_MASK,
.fn = write_iops_log,
},
};
void fio_writeout_logs(struct thread_data *td)
{
unsigned int log_mask = 0;
unsigned int log_left = ALL_LOG_NR;
int old_state, i;
old_state = td_bump_runstate(td, TD_FINISHING);
finalize_logs(td);
while (log_left) {
int prev_log_left = log_left;
for (i = 0; i < ALL_LOG_NR && log_left; i++) {
struct log_type *lt = &log_types[i];
int ret;
if (!(log_mask & lt->mask)) {
ret = lt->fn(td, log_left != 1);
if (!ret) {
log_left--;
log_mask |= lt->mask;
}
}
}
if (prev_log_left == log_left)
usleep(5000);
}
td_restore_runstate(td, old_state);
}