blob: 58aca3c2c81ba162809d7af4dc91008799359093 [file] [log] [blame]
/*
* This file contains the ini and command liner parser. It will create
* and initialize the specified jobs.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "fio.h"
/*
* The default options
*/
#define DEF_BS (4096)
#define DEF_TIMEOUT (0)
#define DEF_RATE_CYCLE (1000)
#define DEF_ODIRECT (1)
#define DEF_IO_ENGINE (FIO_SYNCIO)
#define DEF_IO_ENGINE_NAME "sync"
#define DEF_SEQUENTIAL (1)
#define DEF_RAND_REPEAT (1)
#define DEF_OVERWRITE (1)
#define DEF_CREATE (1)
#define DEF_INVALIDATE (1)
#define DEF_SYNCIO (0)
#define DEF_RANDSEED (0xb1899bedUL)
#define DEF_BWAVGTIME (500)
#define DEF_CREATE_SER (1)
#define DEF_CREATE_FSYNC (1)
#define DEF_LOOPS (1)
#define DEF_VERIFY (0)
#define DEF_STONEWALL (0)
#define DEF_NUMJOBS (1)
#define DEF_USE_THREAD (0)
#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
#define DEF_ZONE_SIZE (0)
#define DEF_ZONE_SKIP (0)
#define DEF_RWMIX_CYCLE (500)
#define DEF_RWMIX_READ (50)
#define DEF_NICE (0)
static int def_timeout = DEF_TIMEOUT;
static char fio_version_string[] = "fio 1.5";
static char **ini_file;
static int max_jobs = MAX_JOBS;
struct thread_data def_thread;
struct thread_data *threads = NULL;
int rate_quit = 0;
int write_lat_log = 0;
int write_bw_log = 0;
int exitall_on_terminate = 0;
int terse_output = 0;
unsigned long long mlock_size = 0;
FILE *f_out = NULL;
FILE *f_err = NULL;
/*
* Return a free job structure.
*/
static struct thread_data *get_new_job(int global, struct thread_data *parent)
{
struct thread_data *td;
if (global)
return &def_thread;
if (thread_number >= max_jobs)
return NULL;
td = &threads[thread_number++];
*td = *parent;
td->name[0] = '\0';
td->fd = -1;
td->thread_number = thread_number;
return td;
}
static void put_job(struct thread_data *td)
{
memset(&threads[td->thread_number - 1], 0, sizeof(*td));
thread_number--;
}
/*
* Adds a job to the list of things todo. Sanitizes the various options
* to make sure we don't have conflicts, and initializes various
* members of td.
*/
static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
{
char *ddir_str[] = { "read", "write", "randread", "randwrite",
"rw", NULL, "randrw" };
struct stat sb;
int numjobs, ddir;
#ifndef FIO_HAVE_LIBAIO
if (td->io_engine == FIO_LIBAIO) {
log_err("Linux libaio not available\n");
return 1;
}
#endif
#ifndef FIO_HAVE_POSIXAIO
if (td->io_engine == FIO_POSIXAIO) {
log_err("posix aio not available\n");
return 1;
}
#endif
/*
* the def_thread is just for options, it's not a real job
*/
if (td == &def_thread)
return 0;
/*
* Set default io engine, if none set
*/
if (!td->io_ops) {
td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
if (!td->io_ops) {
log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
return 1;
}
}
if (td->io_ops->flags & FIO_SYNCIO)
td->iodepth = 1;
else {
if (!td->iodepth)
td->iodepth = 1;
}
/*
* only really works for sequential io for now
*/
if (td->zone_size && !td->sequential)
td->zone_size = 0;
/*
* Reads can do overwrites, we always need to pre-create the file
*/
if (td_read(td) || td_rw(td))
td->overwrite = 1;
td->filetype = FIO_TYPE_FILE;
if (!stat(jobname, &sb)) {
if (S_ISBLK(sb.st_mode))
td->filetype = FIO_TYPE_BD;
else if (S_ISCHR(sb.st_mode))
td->filetype = FIO_TYPE_CHAR;
}
if (td->filetype == FIO_TYPE_FILE) {
char tmp[PATH_MAX];
if (td->directory && td->directory[0] != '\0')
sprintf(tmp, "%s/%s.%d", td->directory, jobname, td->thread_number);
else
sprintf(tmp, "%s.%d", jobname, td->thread_number);
td->file_name = strdup(tmp);
} else
td->file_name = strdup(jobname);
fio_sem_init(&td->mutex, 0);
td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
if (td->min_bs == -1U)
td->min_bs = td->bs;
if (td->max_bs == -1U)
td->max_bs = td->bs;
if (td_read(td) && !td_rw(td))
td->verify = 0;
if (td->stonewall && td->thread_number > 1)
groupid++;
td->groupid = groupid;
if (setup_rate(td))
goto err;
if (write_lat_log) {
setup_log(&td->slat_log);
setup_log(&td->clat_log);
}
if (write_bw_log)
setup_log(&td->bw_log);
if (td->name[0] == '\0')
snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
if (!terse_output) {
if (!job_add_num) {
if (td->io_ops->flags & FIO_CPUIO)
fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
else
fprintf(f_out, "%s: (g=%d): rw=%s, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->name, td->groupid, ddir_str[ddir], td->odirect, td->min_bs, td->max_bs, td->rate, td->io_ops->name, td->iodepth);
} else if (job_add_num == 1)
fprintf(f_out, "...\n");
}
/*
* recurse add identical jobs, clear numjobs and stonewall options
* as they don't apply to sub-jobs
*/
numjobs = td->numjobs;
while (--numjobs) {
struct thread_data *td_new = get_new_job(0, td);
if (!td_new)
goto err;
td_new->numjobs = 1;
td_new->stonewall = 0;
job_add_num = numjobs - 1;
if (add_job(td_new, jobname, job_add_num))
goto err;
}
return 0;
err:
put_job(td);
return -1;
}
/*
* Initialize the various random states we need (random io, block size ranges,
* read/write mix, etc).
*/
int init_random_state(struct thread_data *td)
{
unsigned long seeds[4];
int fd, num_maps, blocks;
fd = open("/dev/urandom", O_RDONLY);
if (fd == -1) {
td_verror(td, errno);
return 1;
}
if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
td_verror(td, EIO);
close(fd);
return 1;
}
close(fd);
os_random_seed(seeds[0], &td->bsrange_state);
os_random_seed(seeds[1], &td->verify_state);
os_random_seed(seeds[2], &td->rwmix_state);
if (td->sequential)
return 0;
if (td->rand_repeatable)
seeds[3] = DEF_RANDSEED;
blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
num_maps = blocks / BLOCKS_PER_MAP;
td->file_map = malloc(num_maps * sizeof(long));
td->num_maps = num_maps;
memset(td->file_map, 0, num_maps * sizeof(long));
os_random_seed(seeds[3], &td->random_state);
return 0;
}
static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
{
#ifdef FIO_HAVE_CPU_AFFINITY
unsigned int i;
CPU_ZERO(&cpumask);
for (i = 0; i < sizeof(int) * 8; i++) {
if ((1 << i) & cpu)
CPU_SET(i, &cpumask);
}
#endif
}
static unsigned long get_mult_time(char c)
{
switch (c) {
case 'm':
case 'M':
return 60;
case 'h':
case 'H':
return 60 * 60;
case 'd':
case 'D':
return 24 * 60 * 60;
default:
return 1;
}
}
static unsigned long get_mult_bytes(char c)
{
switch (c) {
case 'k':
case 'K':
return 1024;
case 'm':
case 'M':
return 1024 * 1024;
case 'g':
case 'G':
return 1024 * 1024 * 1024;
default:
return 1;
}
}
/*
* convert string after '=' into decimal value, noting any size suffix
*/
static int str_to_decimal(char *p, unsigned long long *val, int kilo)
{
char *str;
int len;
str = strchr(p, '=');
if (!str)
return 1;
str++;
len = strlen(str);
*val = strtoul(str, NULL, 10);
if (*val == ULONG_MAX && errno == ERANGE)
return 1;
if (kilo)
*val *= get_mult_bytes(str[len - 1]);
else
*val *= get_mult_time(str[len - 1]);
return 0;
}
static int check_str_bytes(char *p, char *name, unsigned long long *val)
{
if (strncmp(p, name, strlen(name) - 1))
return 1;
return str_to_decimal(p, val, 1);
}
static int check_str_time(char *p, char *name, unsigned long long *val)
{
if (strncmp(p, name, strlen(name) - 1))
return 1;
return str_to_decimal(p, val, 0);
}
static void strip_blank_front(char **p)
{
char *s = *p;
while (isspace(*s))
s++;
}
static void strip_blank_end(char *p)
{
char *s = p + strlen(p) - 1;
while (isspace(*s) || iscntrl(*s))
s--;
*(s + 1) = '\0';
}
typedef int (str_cb_fn)(struct thread_data *, char *);
static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
{
char *s;
if (strncmp(p, name, strlen(name)))
return 1;
s = strstr(p, name);
if (!s)
return 1;
s = strchr(s, '=');
if (!s)
return 1;
s++;
strip_blank_front(&s);
return cb(td, s);
}
static int check_strstore(char *p, char *name, char *dest)
{
char *s;
if (strncmp(p, name, strlen(name)))
return 1;
s = strstr(p, name);
if (!s)
return 1;
s = strchr(p, '=');
if (!s)
return 1;
s++;
strip_blank_front(&s);
strcpy(dest, s);
return 0;
}
static int __check_range_bytes(char *str, unsigned long *val)
{
char suffix;
if (sscanf(str, "%lu%c", val, &suffix) == 2) {
*val *= get_mult_bytes(suffix);
return 0;
}
if (sscanf(str, "%lu", val) == 1)
return 0;
return 1;
}
static int check_range_bytes(char *p, char *name, unsigned long *s,
unsigned long *e)
{
char option[128];
char *str, *p1, *p2;
if (strncmp(p, name, strlen(name)))
return 1;
strcpy(option, p);
p = option;
str = strstr(p, name);
if (!str)
return 1;
p += strlen(name);
str = strchr(p, '=');
if (!str)
return 1;
/*
* 'p' now holds whatever is after the '=' sign
*/
p1 = str + 1;
/*
* terminate p1 at the '-' sign
*/
p = strchr(p1, '-');
if (!p)
return 1;
p2 = p + 1;
*p = '\0';
if (!__check_range_bytes(p1, s) && !__check_range_bytes(p2, e))
return 0;
return 1;
}
static int check_int(char *p, char *name, unsigned int *val)
{
char *str;
if (strncmp(p, name, strlen(name)))
return 1;
str = strstr(p, name);
if (!str)
return 1;
str = strchr(p, '=');
if (!str)
return 1;
str++;
if (sscanf(str, "%u", val) == 1)
return 0;
return 1;
}
static int check_strset(char *p, char *name)
{
return strncmp(p, name, strlen(name));
}
static int is_empty_or_comment(char *line)
{
unsigned int i;
for (i = 0; i < strlen(line); i++) {
if (line[i] == ';')
return 1;
if (!isspace(line[i]) && !iscntrl(line[i]))
return 0;
}
return 1;
}
static int str_rw_cb(struct thread_data *td, char *mem)
{
if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
td->ddir = DDIR_READ;
td->sequential = 1;
return 0;
} else if (!strncmp(mem, "randread", 8)) {
td->ddir = DDIR_READ;
td->sequential = 0;
return 0;
} else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
td->ddir = DDIR_WRITE;
td->sequential = 1;
return 0;
} else if (!strncmp(mem, "randwrite", 9)) {
td->ddir = DDIR_WRITE;
td->sequential = 0;
return 0;
} else if (!strncmp(mem, "rw", 2)) {
td->ddir = 0;
td->iomix = 1;
td->sequential = 1;
return 0;
} else if (!strncmp(mem, "randrw", 6)) {
td->ddir = 0;
td->iomix = 1;
td->sequential = 0;
return 0;
}
log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
return 1;
}
static int str_verify_cb(struct thread_data *td, char *mem)
{
if (!strncmp(mem, "0", 1)) {
td->verify = VERIFY_NONE;
return 0;
} else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
td->verify = VERIFY_MD5;
return 0;
} else if (!strncmp(mem, "crc32", 5)) {
td->verify = VERIFY_CRC32;
return 0;
}
log_err("fio: verify types: md5, crc32\n");
return 1;
}
static int str_mem_cb(struct thread_data *td, char *mem)
{
if (!strncmp(mem, "malloc", 6)) {
td->mem_type = MEM_MALLOC;
return 0;
} else if (!strncmp(mem, "shm", 3)) {
td->mem_type = MEM_SHM;
return 0;
} else if (!strncmp(mem, "mmap", 4)) {
td->mem_type = MEM_MMAP;
return 0;
}
log_err("fio: mem type: malloc, shm, mmap\n");
return 1;
}
static int str_ioengine_cb(struct thread_data *td, char *str)
{
td->io_ops = load_ioengine(td, str);
if (td->io_ops)
return 0;
log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
return 1;
}
/*
* This is our [ini] type file parser.
*/
int parse_jobs_ini(char *file, int stonewall_flag)
{
unsigned int prioclass, prio, cpu, global, il;
unsigned long long ull;
unsigned long ul1, ul2;
struct thread_data *td;
char *string, *name, *tmpbuf;
fpos_t off;
FILE *f;
char *p;
int ret = 0, stonewall;
f = fopen(file, "r");
if (!f) {
perror("fopen job file");
return 1;
}
string = malloc(4096);
name = malloc(256);
tmpbuf = malloc(4096);
stonewall = stonewall_flag;
while ((p = fgets(string, 4096, f)) != NULL) {
if (ret)
break;
if (is_empty_or_comment(p))
continue;
if (sscanf(p, "[%s]", name) != 1)
continue;
global = !strncmp(name, "global", 6);
name[strlen(name) - 1] = '\0';
td = get_new_job(global, &def_thread);
if (!td) {
ret = 1;
break;
}
/*
* Seperate multiple job files by a stonewall
*/
if (!global && stonewall) {
td->stonewall = stonewall;
stonewall = 0;
}
fgetpos(f, &off);
while ((p = fgets(string, 4096, f)) != NULL) {
if (is_empty_or_comment(p))
continue;
if (strstr(p, "["))
break;
strip_blank_front(&p);
strip_blank_end(p);
if (!check_int(p, "prio", &prio)) {
#ifndef FIO_HAVE_IOPRIO
log_err("io priorities not available\n");
ret = 1;
break;
#endif
td->ioprio |= prio;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "prioclass", &prioclass)) {
#ifndef FIO_HAVE_IOPRIO
log_err("io priorities not available\n");
ret = 1;
break;
#else
td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
fgetpos(f, &off);
continue;
#endif
}
if (!check_int(p, "direct", &il)) {
td->odirect = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "rand_repeatable", &il)) {
td->rand_repeatable = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "rate", &td->rate)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "ratemin", &td->ratemin)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "ratecycle", &td->ratecycle)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "cpuload", &td->cpuload)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "cpuchunks", &td->cpucycle)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "thinktime", &td->thinktime)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "cpumask", &cpu)) {
#ifndef FIO_HAVE_CPU_AFFINITY
log_err("cpu affinity not available\n");
ret = 1;
break;
#endif
fill_cpu_mask(td->cpumask, cpu);
fgetpos(f, &off);
continue;
}
if (!check_int(p, "fsync", &td->fsync_blocks)) {
fgetpos(f, &off);
td->end_fsync = 1;
continue;
}
if (!check_int(p, "startdelay", &td->start_delay)) {
fgetpos(f, &off);
continue;
}
if (!check_str_time(p, "timeout", &ull)) {
td->timeout = ull;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "invalidate", &il)) {
td->invalidate_cache = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "iodepth", &td->iodepth)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "sync", &il)) {
td->sync_io = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "create_serialize", &il)) {
td->create_serialize = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "create_fsync", &il)) {
td->create_fsync = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "end_fsync", &il)) {
td->end_fsync = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "loops", &td->loops)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "numjobs", &td->numjobs)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "overwrite", &il)) {
td->overwrite = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
fgetpos(f, &off);
continue;
}
if (!check_int(p, "rwmixread", &il)) {
if (il > 100)
il = 100;
td->rwmixread = il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "rwmixwrite", &il)) {
if (il > 100)
il = 100;
td->rwmixread = 100 - il;
fgetpos(f, &off);
continue;
}
if (!check_int(p, "nice", &td->nice)) {
fgetpos(f, &off);
continue;
}
if (!check_range_bytes(p, "bsrange", &ul1, &ul2)) {
if (ul1 > ul2) {
td->max_bs = ul1;
td->min_bs = ul2;
} else {
td->max_bs = ul2;
td->min_bs = ul1;
}
fgetpos(f, &off);
continue;
}
if (!check_str_bytes(p, "bs", &ull)) {
td->bs = ull;
fgetpos(f, &off);
continue;
}
if (!check_str_bytes(p, "size", &td->file_size)) {
fgetpos(f, &off);
continue;
}
if (!check_str_bytes(p, "offset", &td->file_offset)) {
fgetpos(f, &off);
continue;
}
if (!check_str_bytes(p, "zonesize", &td->zone_size)) {
fgetpos(f, &off);
continue;
}
if (!check_str_bytes(p, "zoneskip", &td->zone_skip)) {
fgetpos(f, &off);
continue;
}
if (!check_str_bytes(p, "lockmem", &mlock_size)) {
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "directory", tmpbuf)) {
td->directory = strdup(tmpbuf);
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "name", tmpbuf)) {
snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
fgetpos(f, &off);
continue;
}
if (!check_str(p, "mem", str_mem_cb, td)) {
fgetpos(f, &off);
continue;
}
if (!check_str(p, "verify", str_verify_cb, td)) {
fgetpos(f, &off);
continue;
}
if (!check_str(p, "rw", str_rw_cb, td)) {
fgetpos(f, &off);
continue;
}
if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
fgetpos(f, &off);
continue;
}
if (!check_strset(p, "create")) {
td->create_file = 1;
fgetpos(f, &off);
continue;
}
if (!check_strset(p, "exitall")) {
exitall_on_terminate = 1;
fgetpos(f, &off);
continue;
}
if (!check_strset(p, "stonewall")) {
td->stonewall = 1;
fgetpos(f, &off);
continue;
}
if (!check_strset(p, "thread")) {
td->use_thread = 1;
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "iolog", tmpbuf)) {
if (td->write_iolog) {
log_err("fio: read iolog overrides given write_iolog\n");
free(td->iolog_file);
td->write_iolog = 0;
}
td->iolog_file = strdup(tmpbuf);
td->read_iolog = 1;
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "write_iolog", tmpbuf)) {
if (!td->read_iolog) {
td->iolog_file = strdup(tmpbuf);
td->write_iolog = 1;
} else
log_err("fio: read iolog overrides given write_iolog\n");
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "exec_prerun", tmpbuf)) {
td->exec_prerun = strdup(tmpbuf);
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "exec_postrun", tmpbuf)) {
td->exec_postrun = strdup(tmpbuf);
fgetpos(f, &off);
continue;
}
if (!check_strstore(p, "ioscheduler", tmpbuf)) {
#ifndef FIO_HAVE_IOSCHED_SWITCH
log_err("io scheduler switching not available\n");
ret = 1;
break;
#else
td->ioscheduler = strdup(tmpbuf);
fgetpos(f, &off);
continue;
#endif
}
/*
* Don't break here, continue parsing options so we
* dump all the bad ones. Makes trial/error fixups
* easier on the user.
*/
printf("Client%d: bad option %s\n",td->thread_number,p);
ret = 1;
}
if (!ret) {
fsetpos(f, &off);
ret = add_job(td, name, 0);
}
if (ret)
break;
}
free(string);
free(name);
free(tmpbuf);
fclose(f);
return ret;
}
static int fill_def_thread(void)
{
memset(&def_thread, 0, sizeof(def_thread));
if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
perror("sched_getaffinity");
return 1;
}
/*
* fill globals
*/
def_thread.ddir = DDIR_READ;
def_thread.iomix = 0;
def_thread.bs = DEF_BS;
def_thread.min_bs = -1;
def_thread.max_bs = -1;
def_thread.odirect = DEF_ODIRECT;
def_thread.ratecycle = DEF_RATE_CYCLE;
def_thread.sequential = DEF_SEQUENTIAL;
def_thread.timeout = def_timeout;
def_thread.create_file = DEF_CREATE;
def_thread.overwrite = DEF_OVERWRITE;
def_thread.invalidate_cache = DEF_INVALIDATE;
def_thread.sync_io = DEF_SYNCIO;
def_thread.mem_type = MEM_MALLOC;
def_thread.bw_avg_time = DEF_BWAVGTIME;
def_thread.create_serialize = DEF_CREATE_SER;
def_thread.create_fsync = DEF_CREATE_FSYNC;
def_thread.loops = DEF_LOOPS;
def_thread.verify = DEF_VERIFY;
def_thread.stonewall = DEF_STONEWALL;
def_thread.numjobs = DEF_NUMJOBS;
def_thread.use_thread = DEF_USE_THREAD;
def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
def_thread.rwmixread = DEF_RWMIX_READ;
def_thread.nice = DEF_NICE;
def_thread.rand_repeatable = DEF_RAND_REPEAT;
#ifdef FIO_HAVE_DISK_UTIL
def_thread.do_disk_util = 1;
#endif
return 0;
}
static void usage(char *name)
{
printf("%s\n", fio_version_string);
printf("\t-o Write output to file\n");
printf("\t-t Runtime in seconds\n");
printf("\t-l Generate per-job latency logs\n");
printf("\t-w Generate per-job bandwidth logs\n");
printf("\t-m Minimal (terse) output\n");
printf("\t-v Print version info and exit\n");
}
static int parse_cmd_line(int argc, char *argv[])
{
int c, idx = 1, ini_idx = 0;
while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
switch (c) {
case 't':
def_timeout = atoi(optarg);
idx = optind;
break;
case 'l':
write_lat_log = 1;
idx = optind;
break;
case 'w':
write_bw_log = 1;
idx = optind;
break;
case 'o':
f_out = fopen(optarg, "w+");
if (!f_out) {
perror("fopen output");
exit(1);
}
f_err = f_out;
idx = optind;
break;
case 'm':
terse_output = 1;
idx = optind;
break;
case 'h':
usage(argv[0]);
exit(0);
case 'v':
printf("%s\n", fio_version_string);
exit(0);
}
}
while (idx < argc) {
ini_idx++;
ini_file = realloc(ini_file, ini_idx * sizeof(char *));
ini_file[ini_idx - 1] = strdup(argv[idx]);
idx++;
}
if (!f_out) {
f_out = stdout;
f_err = stderr;
}
return ini_idx;
}
static void free_shm(void)
{
struct shmid_ds sbuf;
if (threads) {
shmdt((void *) threads);
threads = NULL;
shmctl(shm_id, IPC_RMID, &sbuf);
}
}
/*
* The thread area is shared between the main process and the job
* threads/processes. So setup a shared memory segment that will hold
* all the job info.
*/
static int setup_thread_area(void)
{
/*
* 1024 is too much on some machines, scale max_jobs if
* we get a failure that looks like too large a shm segment
*/
do {
size_t size = max_jobs * sizeof(struct thread_data);
shm_id = shmget(0, size, IPC_CREAT | 0600);
if (shm_id != -1)
break;
if (errno != EINVAL) {
perror("shmget");
break;
}
max_jobs >>= 1;
} while (max_jobs);
if (shm_id == -1)
return 1;
threads = shmat(shm_id, NULL, 0);
if (threads == (void *) -1) {
perror("shmat");
return 1;
}
atexit(free_shm);
return 0;
}
int parse_options(int argc, char *argv[])
{
int job_files, i;
if (setup_thread_area())
return 1;
if (fill_def_thread())
return 1;
job_files = parse_cmd_line(argc, argv);
if (!job_files) {
log_err("Need job file(s)\n");
usage(argv[0]);
return 1;
}
for (i = 0; i < job_files; i++) {
if (fill_def_thread())
return 1;
if (parse_jobs_ini(ini_file[i], i))
return 1;
free(ini_file[i]);
}
free(ini_file);
return 0;
}