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/*
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*
* Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _DT_STATE_H
#define _DT_STATE_H
/*
* DTrace 'state' BPF map.
*
* The keys are uint32_t values corresponding to dt_state_elem_t values.
* The values are uint32_t values.
*/
#define DT_STATE_KEY_TYPE uint32_t
#define DT_STATE_VAL_TYPE uint32_t
typedef enum dt_state_elem {
DT_STATE_ACTIVITY = 0, /* activity state of the session */
DT_STATE_BEGANON, /* cpu BEGIN probe executed on */
DT_STATE_ENDEDON, /* cpu END probe executed on */
DT_STATE_SPEC_DROPS, /* speculation buffer drops */
DT_STATE_SPEC_BUSY, /* all speculation buffers are busy */
DT_STATE_SPEC_UNAVAIL, /* no available speculation buffer */
DT_STATE_DYNVAR_DROPS, /* dynamic variable drops */
DT_STATE_NUM_ELEMS
} dt_state_elem_t;
/*
* DTrace activity state
*/
typedef enum dt_activity {
DT_ACTIVITY_INACTIVE = 0, /* tracing not started */
DT_ACTIVITY_ACTIVE, /* tracing in progress */
DT_ACTIVITY_DRAINING, /* tracing being stopped */
DT_ACTIVITY_STOPPED /* tracing stopped */
} dt_activity_t;
#ifndef __BPF__
# include "dt_bpf.h"
# include "dt_impl.h"
static inline uint32_t
dt_state_get(dtrace_hdl_t *dtp, uint32_t key)
{
uint32_t val = 0;
dt_bpf_map_lookup(dtp->dt_stmap_fd, &key, &val);
return val;
}
static inline void
dt_state_set(dtrace_hdl_t *dtp, uint32_t key, uint32_t val)
{
dt_bpf_map_update(dtp->dt_stmap_fd, &key, &val);
}
# define dt_state_get_activity(dtp) \
((dt_activity_t)dt_state_get(dtp, DT_STATE_ACTIVITY))
# define dt_state_set_activity(dtp, act) \
dt_state_set(dtp, DT_STATE_ACTIVITY, (uint32_t)(act))
# define dt_state_get_beganon(dtp) dt_state_get(dtp, DT_STATE_BEGANON)
# define dt_state_get_endedon(dtp) dt_state_get(dtp, DT_STATE_ENDEDON)
#endif
#endif /* _DT_STATE_H */
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