rand: add 64-bit tausworthe variant with a 2^258 cycle

[fio.git] / verify.h

diff --git a/verify.h b/verify.h
index 3e52f9c1872974599c0e541955caacc83a12d3b5..d4d6012b0ec35e6632e4e341881cbd3cd5f87d82 100644 (file)
--- a/verify.h
+++ b/verify.h
@@ -88,10 +88,22 @@ extern void fio_verify_init(struct thread_data *td);
 extern int verify_async_init(struct thread_data *);
 extern void verify_async_exit(struct thread_data *);
 
-struct thread_rand_state {
+struct thread_rand32_state {
        uint32_t s[4];
 };
 
+struct thread_rand64_state {
+       uint64_t s[6];
+};
+
+struct thread_rand_state {
+       uint64_t use64;
+       union {
+               struct thread_rand32_state state32;
+               struct thread_rand64_state state64;
+       };
+};
+
 /*
  * For dumping current write state
  */
@@ -105,12 +117,23 @@ struct thread_io_list {
        uint64_t offsets[0];
 };
 
+struct thread_io_list_v1 {
+       uint64_t no_comps;
+       uint64_t depth;
+       uint64_t numberio;
+       uint64_t index;
+       struct thread_rand32_state rand;
+       uint8_t name[64];
+       uint64_t offsets[0];
+};
+
 struct all_io_list {
        uint64_t threads;
        struct thread_io_list state[0];
 };
 
-#define VSTATE_HDR_VERSION     0x01
+#define VSTATE_HDR_VERSION_V1  0x01
+#define VSTATE_HDR_VERSION     0x02
 
 struct verify_state_hdr {
        uint64_t version;
@@ -125,12 +148,18 @@ extern void verify_save_state(void);
 extern int verify_load_state(struct thread_data *, const char *);
 extern void verify_free_state(struct thread_data *);
 extern int verify_state_should_stop(struct thread_data *, struct io_u *);
-extern void verify_convert_assign_state(struct thread_data *, struct thread_io_list *);
-extern int verify_state_hdr(struct verify_state_hdr *, struct thread_io_list *);
+extern void verify_convert_assign_state(struct thread_data *, void *, int);
+extern int verify_state_hdr(struct verify_state_hdr *, struct thread_io_list *,
+                               int *);
+
+static inline size_t __thread_io_list_sz(uint64_t depth)
+{
+       return sizeof(struct thread_io_list) + depth * sizeof(uint64_t);
+}
 
 static inline size_t thread_io_list_sz(struct thread_io_list *s)
 {
-       return sizeof(*s) + le64_to_cpu(s->depth) * sizeof(uint64_t);
+       return __thread_io_list_sz(le64_to_cpu(s->depth));
 }
 
 static inline struct thread_io_list *io_list_next(struct thread_io_list *s)
@@ -138,10 +167,12 @@ static inline struct thread_io_list *io_list_next(struct thread_io_list *s)
        return (void *) s + thread_io_list_sz(s);
 }
 
-static inline void verify_state_gen_name(char *out, const char *name,
-                                        const char *prefix, int num)
+static inline void verify_state_gen_name(char *out, size_t size,
+                                        const char *name, const char *prefix,
+                                        int num)
 {
-       sprintf(out, "%s-%s-%d-verify.state", prefix, name, num);
+       snprintf(out, size, "%s-%s-%d-verify.state", prefix, name, num);
+       out[size - 1] = '\0';
 }
 
 #endif