#ifndef included_stat_client_h
#define included_stat_client_h
+#define STAT_VERSION_MAJOR 1
+#define STAT_VERSION_MINOR 2
+
#include <stdint.h>
-#include <vpp/stats/stat_segment.h>
+#include <unistd.h>
#include <vlib/counter_types.h>
+#include <time.h>
+#include <stdbool.h>
+#include <vlib/stats/shared.h>
-typedef struct
-{
- uint64_t current_epoch;
- stat_segment_shared_header_t *shared_header;
- stat_segment_directory_entry_t *directory_vector;
- ssize_t memory_size;
-} stat_client_main_t;
+/* 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
{
char *name;
stat_directory_type_t type;
+ bool via_symlink;
union
{
double scalar_value;
- uint64_t error_value;
+ counter_t *error_vector;
counter_t **simple_counter_vec;
vlib_counter_t **combined_counter_vec;
+ uint8_t **name_vector;
};
} stat_segment_data_t;
+typedef struct
+{
+ uint64_t current_epoch;
+ vlib_stats_shared_header_t *shared_header;
+ vlib_stats_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 (char *socket_name, stat_client_main_t * sm);
-int stat_segment_connect (char *socket_name);
+int stat_segment_connect_r (const char *socket_name, stat_client_main_t * sm);
+int stat_segment_connect (const char *socket_name);
void stat_segment_disconnect_r (stat_client_main_t * sm);
void stat_segment_disconnect (void);
-uint8_t **stat_segment_string_vector (uint8_t ** string_vector, char *string);
+uint8_t **stat_segment_string_vector (uint8_t ** string_vector,
+ const char *string);
int stat_segment_vec_len (void *vec);
void stat_segment_vec_free (void *vec);
uint32_t *stat_segment_ls_r (uint8_t ** patterns, stat_client_main_t * sm);
double stat_segment_heartbeat_r (stat_client_main_t * sm);
double stat_segment_heartbeat (void);
+char *stat_segment_index_to_name_r (uint32_t index, stat_client_main_t * sm);
char *stat_segment_index_to_name (uint32_t index);
+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)
+{
+ char *csh = (char *) sm->shared_header;
+ char *p = csh + ((char *) data - (char *) sm->shared_header->base);
+ if (p > csh && p + sizeof (p) < csh + sm->memory_size)
+ return (void *) p;
+ return 0;
+}
+
+/*
+ * 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)
+{
+ vlib_stats_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 = (vlib_stats_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;
+}
+
+/*
+ * set maximum number of nano seconds to wait for in_progress state
+ * this function can be called directly by module using shared stat
+ * segment
+ */
+static inline void
+stat_segment_set_timeout (uint64_t timeout)
+{
+ stat_client_main_t *sm = &stat_client_main;
+ stat_segment_set_timeout_nsec (sm, timeout);
+}
+
+
+static inline bool
+stat_segment_access_end (stat_segment_access_t * sa, stat_client_main_t * sm)
+{
+ vlib_stats_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 */