#include <stdint.h>
#include <unistd.h>
#include <vlib/counter_types.h>
-
-typedef enum
-{
- STAT_DIR_TYPE_ILLEGAL = 0,
- STAT_DIR_TYPE_SCALAR_INDEX,
- STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE,
- STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED,
- STAT_DIR_TYPE_ERROR_INDEX,
- STAT_DIR_TYPE_NAME_VECTOR,
-} stat_directory_type_t;
+#include <time.h>
+#include <stdbool.h>
+#include <vpp/stats/stat_segment_shared.h>
/* Default socket to exchange segment fd */
/* TODO: Get from runtime directory */
#define STAT_SEGMENT_SOCKET_FILE "/run/vpp/stats.sock"
#define STAT_SEGMENT_SOCKET_FILENAME "stats.sock"
-typedef struct stat_client_main_t stat_client_main_t;
-
typedef struct
{
char *name;
};
} stat_segment_data_t;
+typedef struct
+{
+ uint64_t current_epoch;
+ stat_segment_shared_header_t *shared_header;
+ stat_segment_directory_entry_t *directory_vector;
+ ssize_t memory_size;
+ uint64_t timeout;
+} stat_client_main_t;
+
+extern stat_client_main_t stat_client_main;
+
stat_client_main_t *stat_client_get (void);
void stat_client_free (stat_client_main_t * sm);
int stat_segment_connect_r (const char *socket_name, stat_client_main_t * sm);
uint64_t stat_segment_version (void);
uint64_t stat_segment_version_r (stat_client_main_t * sm);
+typedef struct
+{
+ uint64_t epoch;
+} stat_segment_access_t;
+
+static inline uint64_t
+_time_now_nsec (void)
+{
+ struct timespec ts;
+ clock_gettime (CLOCK_REALTIME, &ts);
+ return 1e9 * ts.tv_sec + ts.tv_nsec;
+}
+
+static inline void *
+stat_segment_adjust (stat_client_main_t * sm, void *data)
+{
+ return (void *) ((char *) sm->shared_header +
+ ((char *) data - (char *) sm->shared_header->base));
+}
+
+/*
+ * Returns 0 on success, -1 on failure (timeout)
+ */
+static inline int
+stat_segment_access_start (stat_segment_access_t * sa,
+ stat_client_main_t * sm)
+{
+ stat_segment_shared_header_t *shared_header = sm->shared_header;
+ uint64_t max_time;
+
+ sa->epoch = shared_header->epoch;
+ if (sm->timeout)
+ {
+ max_time = _time_now_nsec () + sm->timeout;
+ while (shared_header->in_progress != 0 && _time_now_nsec () < max_time)
+ ;
+ }
+ else
+ {
+ while (shared_header->in_progress != 0)
+ ;
+ }
+ sm->directory_vector =
+ (stat_segment_directory_entry_t *) stat_segment_adjust (sm,
+ (void *)
+ sm->shared_header->directory_vector);
+ if (sm->timeout)
+ return _time_now_nsec () < max_time ? 0 : -1;
+ return 0;
+}
+
+/*
+ * set maximum number of nano seconds to wait for in_progress state
+ */
+static inline void
+stat_segment_set_timeout_nsec (stat_client_main_t * sm, uint64_t timeout)
+{
+ sm->timeout = timeout;
+}
+
+static inline bool
+stat_segment_access_end (stat_segment_access_t * sa, stat_client_main_t * sm)
+{
+ stat_segment_shared_header_t *shared_header = sm->shared_header;
+
+ if (shared_header->epoch != sa->epoch || shared_header->in_progress)
+ return false;
+ return true;
+}
+
#endif /* included_stat_client_h */
/*