X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=lib%2Frand.h;h=089837dbf0267c326dc4b355782558c24080abf1;hb=477bd5ab362b65fe9c7749735236e6ed0d4346f8;hp=02e68585420b942fb7805375308a2f1d77ef91c8;hpb=7d9fb455aadc0c0363489591775496f27f4a560a;p=fio.git

diff --git a/lib/rand.h b/lib/rand.h
index 02e68585..089837db 100644
--- a/lib/rand.h
+++ b/lib/rand.h
@@ -1,11 +1,19 @@
 #ifndef FIO_RAND_H
 #define FIO_RAND_H
 
+#define FRAND_MAX	(-1U)
+
 struct frand_state {
 	unsigned int s1, s2, s3;
 };
 
-extern struct frand_state __fio_rand_state;
+static inline void frand_copy(struct frand_state *dst,
+			      struct frand_state *src)
+{
+	dst->s1 = src->s1;
+	dst->s2 = src->s2;
+	dst->s3 = src->s3;
+}
 
 static inline unsigned int __rand(struct frand_state *state)
 {
@@ -19,7 +27,11 @@ static inline unsigned int __rand(struct frand_state *state)
 }
 
 extern void init_rand(struct frand_state *);
+extern void init_rand_seed(struct frand_state *, unsigned int seed);
 extern void __fill_random_buf(void *buf, unsigned int len, unsigned long seed);
-extern unsigned long fill_random_buf(void *buf, unsigned int len);
+extern unsigned long fill_random_buf(struct frand_state *, void *buf, unsigned int len);
+extern void __fill_random_buf_percentage(unsigned long, void *, unsigned int, unsigned int, unsigned int, char *, unsigned int);
+extern unsigned long fill_random_buf_percentage(struct frand_state *, void *, unsigned int, unsigned int, unsigned int, char *, unsigned int);
+extern void fill_pattern(void *p, unsigned int len, char *pattern, unsigned int pattern_bytes);
 
 #endif