Add a real semaphore implemtation

[fio.git] / fio.h

diff --git a/fio.h b/fio.h
index 1b933ca137c43632eeb98c620b2fbc47f711a2bd..12cf3c9a686b4a389cacd4da13736d0a0d0d8bf8 100644 (file)
--- a/fio.h
+++ b/fio.h
@@ -17,6 +17,7 @@
 #include "crc32.h"
 #include "arch.h"
 #include "os.h"
+#include "mutex.h"
 
 #ifdef FIO_HAVE_SYSLET
 #include "syslet.h"
@@ -212,10 +213,8 @@ enum fio_filetype {
 enum fio_ioengine_flags {
        FIO_SYNCIO      = 1 << 0,       /* io engine has synchronous ->queue */
        FIO_CPUIO       = 1 << 1,       /* cpu burner, doesn't do real io */
-       FIO_MMAPIO      = 1 << 2,       /* uses memory mapped io */
-       FIO_RAWIO       = 1 << 3,       /* some sort of direct/raw io */
-       FIO_DISKLESSIO  = 1 << 4,       /* no disk involved */
-       FIO_SELFOPEN    = 1 << 5,       /* opens its own devices */
+       FIO_RAWIO       = 1 << 2,       /* some sort of direct/raw io */
+       FIO_DISKLESSIO  = 1 << 3,       /* no disk involved */
 };
 
 /*
@@ -246,6 +245,7 @@ struct fio_file {
        unsigned int last_free_lookup;
 
        unsigned int unlink;
+       unsigned int open;
 };
 
 /*
@@ -261,6 +261,7 @@ struct thread_stat {
        int groupid;
        pid_t pid;
        char *description;
+       int members;
 
        struct io_log *slat_log;
        struct io_log *clat_log;
@@ -380,6 +381,7 @@ struct thread_data {
        unsigned int nice;
        unsigned int file_service_type;
        unsigned int group_reporting;
+       unsigned int open_files;
 
        char *read_iolog_file;
        char *write_iolog_file;
@@ -430,7 +432,7 @@ struct thread_data {
        unsigned long long io_bytes[2];
        unsigned long long this_io_bytes[2];
        unsigned long long zone_bytes;
-       volatile int mutex;
+       struct fio_sem *mutex;
 
        /*
         * State for random io, a bitmap of blocks done vs not done
@@ -633,9 +635,9 @@ extern int __must_check init_random_state(struct thread_data *);
 extern void close_files(struct thread_data *);
 extern int __must_check setup_files(struct thread_data *);
 extern int __must_check open_files(struct thread_data *);
-extern int open_file(struct thread_data *, struct fio_file *, int, int);
-extern void close_file(struct thread_data *, struct fio_file *);
 extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
+extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
+extern void generic_close_file(struct thread_data *, struct fio_file *);
 
 /*
  * ETA/status stuff
@@ -699,30 +701,8 @@ extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
 extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
 extern int __must_check td_io_getevents(struct thread_data *, int, int, struct timespec *);
 extern int __must_check td_io_commit(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 *sem, int val)
-{
-       *sem = val;
-}
-
-static inline void fio_sem_down(volatile int *sem)
-{
-       while (*sem == 0)
-               usleep(10000);
-
-       (*sem)--;
-}
-
-static inline void fio_sem_up(volatile int *sem)
-{
-       (*sem)++;
-}
+extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
+extern void td_io_close_file(struct thread_data *, struct fio_file *);
 
 /*
  * If logging output to a file, stderr should go to both stderr and f_err
@@ -750,12 +730,13 @@ struct ioengine_ops {
        struct io_u *(*event)(struct thread_data *, int);
        int (*cancel)(struct thread_data *, struct io_u *);
        void (*cleanup)(struct thread_data *);
+       int (*open_file)(struct thread_data *, struct fio_file *);
+       void (*close_file)(struct thread_data *, struct fio_file *);
        void *data;
        void *dlhandle;
-       unsigned long priv;
 };
 
-#define FIO_IOOPS_VERSION      5
+#define FIO_IOOPS_VERSION      6
 
 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
 extern void register_ioengine(struct ioengine_ops *);
@@ -772,7 +753,7 @@ extern void close_ioengine(struct thread_data *);
 #define for_each_td(td, i)     \
        for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
 #define for_each_file(td, f, i)        \
-       for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)
+       for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->open_files; (i)++, (f)++)
 
 #define fio_assert(td, cond)   do {    \
        if (!(cond)) {                  \