steadystate: add free helper

[fio.git] / steadystate.h

diff --git a/steadystate.h b/steadystate.h
index 31e5c3fc42f27ff67ca6a06771e2f9fca0f0c41a..9fd88ee8cec4c2bad0c61e8c68e73b03d9358be5 100644 (file)
--- a/steadystate.h
+++ b/steadystate.h
@@ -1,10 +1,71 @@
 #ifndef FIO_STEADYSTATE_H
 #define FIO_STEADYSTATE_H
 
+#include "stat.h"
+#include "thread_options.h"
+#include "lib/ieee754.h"
+
+extern void steadystate_free(struct thread_data *);
 extern void steadystate_check(void);
 extern void steadystate_setup(void);
-extern void steadystate_alloc(struct thread_data *);
-extern bool steadystate_deviation(unsigned long, unsigned long, struct thread_data *);
-extern bool steadystate_slope(unsigned long, unsigned long, struct thread_data *);
-#endif
+extern int td_steadystate_init(struct thread_data *);
+extern uint64_t steadystate_bw_mean(struct thread_stat *);
+extern uint64_t steadystate_iops_mean(struct thread_stat *);
+
+extern bool steadystate_enabled;
+
+struct steadystate_data {
+       double limit;
+       unsigned long long dur;
+       unsigned long long ramp_time;
+
+       uint32_t state;
+
+       unsigned int head;
+       unsigned int tail;
+       uint64_t *iops_data;
+       uint64_t *bw_data;
+
+       double slope;
+       double deviation;
+       double criterion;
 
+       uint64_t sum_y;
+       uint64_t sum_x;
+       uint64_t sum_x_sq;
+       uint64_t sum_xy;
+       uint64_t oldest_y;
+
+       struct timespec prev_time;
+       uint64_t prev_iops;
+       uint64_t prev_bytes;
+};
+
+enum {
+       __FIO_SS_IOPS = 0,
+       __FIO_SS_BW,
+       __FIO_SS_SLOPE,
+       __FIO_SS_ATTAINED,
+       __FIO_SS_RAMP_OVER,
+       __FIO_SS_DATA,
+       __FIO_SS_PCT,
+       __FIO_SS_BUFFER_FULL,
+};
+
+enum {
+       FIO_SS_IOPS             = 1 << __FIO_SS_IOPS,
+       FIO_SS_BW               = 1 << __FIO_SS_BW,
+       FIO_SS_SLOPE            = 1 << __FIO_SS_SLOPE,
+       FIO_SS_ATTAINED         = 1 << __FIO_SS_ATTAINED,
+       FIO_SS_RAMP_OVER        = 1 << __FIO_SS_RAMP_OVER,
+       FIO_SS_DATA             = 1 << __FIO_SS_DATA,
+       FIO_SS_PCT              = 1 << __FIO_SS_PCT,
+       FIO_SS_BUFFER_FULL      = 1 << __FIO_SS_BUFFER_FULL,
+
+       FIO_SS_IOPS_SLOPE       = FIO_SS_IOPS | FIO_SS_SLOPE,
+       FIO_SS_BW_SLOPE         = FIO_SS_BW | FIO_SS_SLOPE,
+};
+
+#define STEADYSTATE_MSEC       1000
+
+#endif