#include <pthread.h>
#include <sys/time.h>
#include <sys/resource.h>
-#include <semaphore.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
+#include <unistd.h>
#include "list.h"
#include "md5.h"
unsigned long long agg[2];
};
+enum fio_ddir {
+ DDIR_READ = 0,
+ DDIR_WRITE,
+};
+
+/*
+ * What type of allocation to use for io buffers
+ */
+enum fio_memtype {
+ MEM_MALLOC = 0, /* ordinary malloc */
+ MEM_SHM, /* use shared memory segments */
+ MEM_MMAP, /* use anonynomous mmap */
+};
+
+/*
+ * The type of object we are working on
+ */
+enum fio_filetype {
+ FIO_TYPE_FILE = 1,
+ FIO_TYPE_BD,
+ FIO_TYPE_CHAR,
+};
+
+enum fio_iotype {
+ FIO_SYNCIO = 1 << 0,
+ FIO_MMAPIO = 1 << 1 | FIO_SYNCIO,
+ FIO_LIBAIO = 1 << 2,
+ FIO_POSIXAIO = 1 << 3,
+ FIO_SGIO = 1 << 4,
+ FIO_SPLICEIO = 1 << 5 | FIO_SYNCIO,
+};
+
+/*
+ * This describes a single thread/process executing a fio job.
+ */
struct thread_data {
- char name[64];
- char file_name[256];
+ char name[32];
+ char *file_name;
char *directory;
char verror[80];
pthread_t thread;
int thread_number;
int groupid;
- int filetype;
+ enum fio_filetype filetype;
int error;
int fd;
void *mmap;
size_t orig_buffer_size;
volatile int terminate;
volatile int runstate;
- volatile int old_runstate;
- unsigned int ddir;
+ enum fio_ddir ddir;
unsigned int iomix;
unsigned int ioprio;
- unsigned int sequential;
+
+ unsigned char sequential;
+ unsigned char odirect;
+ unsigned char create_file;
+ unsigned char invalidate_cache;
+ unsigned char create_serialize;
+ unsigned char create_fsync;
+ unsigned char end_fsync;
+ unsigned char sync_io;
+ unsigned char verify;
+ unsigned char use_thread;
+ unsigned char do_disk_util;
+ unsigned char override_sync;
+
unsigned int bs;
unsigned int min_bs;
unsigned int max_bs;
- unsigned int odirect;
unsigned int thinktime;
unsigned int fsync_blocks;
unsigned int start_delay;
unsigned int timeout;
- unsigned int io_engine;
- unsigned int create_file;
+ enum fio_iotype io_engine;
unsigned int overwrite;
- unsigned int invalidate_cache;
unsigned int bw_avg_time;
- unsigned int create_serialize;
- unsigned int create_fsync;
- unsigned int end_fsync;
unsigned int loops;
unsigned long long file_size;
unsigned long long real_file_size;
unsigned long long file_offset;
unsigned long long zone_size;
unsigned long long zone_skip;
- unsigned int sync_io;
- unsigned int mem_type;
- unsigned int verify;
+ enum fio_memtype mem_type;
unsigned int stonewall;
unsigned int numjobs;
- unsigned int use_thread;
unsigned int iodepth;
os_cpu_mask_t cpumask;
unsigned int jobnum;
FILE *iolog_f;
char *sysfs_root;
-
char *ioscheduler;
os_random_state_t bsrange_state;
int shm_id;
+ /*
+ * IO engine hooks, contains everything needed to submit an io_u
+ * to any of the available IO engines.
+ */
void *io_data;
char io_engine_name[16];
int (*io_prep)(struct thread_data *, struct io_u *);
void (*io_cleanup)(struct thread_data *);
int (*io_sync)(struct thread_data *);
+ /*
+ * Current IO depth and list of free and busy io_u's.
+ */
unsigned int cur_depth;
struct list_head io_u_freelist;
struct list_head io_u_busylist;
+ /*
+ * Rate state
+ */
unsigned int rate;
unsigned int ratemin;
unsigned int ratecycle;
unsigned long long zone_bytes;
unsigned long long this_io_bytes[2];
unsigned long long last_pos;
- sem_t mutex;
+ volatile int mutex;
+ /*
+ * State for random io, a bitmap of blocks done vs not done
+ */
os_random_state_t random_state;
unsigned long *file_map;
unsigned int num_maps;
struct timeval start; /* start of this loop */
struct timeval epoch; /* time job was started */
+ /*
+ * fio system usage accounting
+ */
struct rusage ru_start;
struct rusage ru_end;
unsigned long usr_time;
unsigned long sys_time;
unsigned long ctx;
- unsigned int do_disk_util;
- unsigned int override_sync;
-
+ /*
+ * read/write mixed workload state
+ */
os_random_state_t rwmix_state;
struct timeval rwmix_switch;
- int rwmix_ddir;
+ enum fio_ddir rwmix_ddir;
/*
* Pre-run and post-run shell
char *exec_prerun;
char *exec_postrun;
+ /*
+ * IO historic logs
+ */
struct list_head io_hist_list;
struct list_head io_log_list;
};
extern int thread_number;
extern int shm_id;
extern int groupid;
+extern FILE *f_out;
+extern FILE *f_err;
extern struct thread_data *threads;
-enum {
- DDIR_READ = 0,
- DDIR_WRITE,
-};
-
-/*
- * What type of allocation to use for io buffers
- */
-enum {
- MEM_MALLOC, /* ordinary malloc */
- MEM_SHM, /* use shared memory segments */
- MEM_MMAP, /* use anonynomous mmap */
-};
-
-/*
- * The type of object we are working on
- */
-enum {
- FIO_TYPE_FILE = 1,
- FIO_TYPE_BD,
- FIO_TYPE_CHAR,
-};
-
-enum {
- FIO_SYNCIO = 1 << 0,
- FIO_MMAPIO = 1 << 1 | FIO_SYNCIO,
- FIO_LIBAIO = 1 << 2,
- FIO_POSIXAIO = 1 << 3,
- FIO_SGIO = 1 << 4,
- FIO_SPLICEIO = 1 << 5 | FIO_SYNCIO,
-};
-
#define td_read(td) ((td)->ddir == DDIR_READ)
#define td_write(td) ((td)->ddir == DDIR_WRITE)
#define td_rw(td) ((td)->iomix != 0)
extern int parse_options(int, char **);
extern int init_random_state(struct thread_data *);
+/*
+ * This is a pretty crappy semaphore implementation, but with the use that fio
+ * has (just signalling start/go conditions), it doesn't have to be better.
+ * Naturally this would not work for any type of contended semaphore or
+ * for real locking.
+ */
+static inline void fio_sem_init(volatile int volatile *sem, int val)
+{
+ *sem = val;
+}
+
+static inline void fio_sem_down(volatile int volatile *sem)
+{
+ while (*sem == 0)
+ usleep(10000);
+
+ (*sem)--;
+}
+
+static inline void fio_sem_up(volatile int volatile *sem)
+{
+ (*sem)++;
+}
+
#endif
projects / fio.git / blobdiff