stats: expose symlink to stats client

[vpp.git] / src / vpp-api / client / stat_client.h

diff --git a/src/vpp-api/client/stat_client.h b/src/vpp-api/client/stat_client.h
index 052d969..d9671c6 100644 (file)
--- a/src/vpp-api/client/stat_client.h
+++ b/src/vpp-api/client/stat_client.h
@@ -25,7 +25,7 @@
 #include <vlib/counter_types.h>
 #include <time.h>
 #include <stdbool.h>
-#include <vpp/stats/stat_segment_shared.h>
+#include <vlib/stats/shared.h>
 
 /* Default socket to exchange segment fd */
 /* TODO: Get from runtime directory */
@@ -36,6 +36,7 @@ typedef struct
 {
   char *name;
   stat_directory_type_t type;
+  bool via_symlink;
   union
   {
     double scalar_value;
@@ -49,8 +50,8 @@ typedef struct
 typedef struct
 {
   uint64_t current_epoch;
-  stat_segment_shared_header_t *shared_header;
-  stat_segment_directory_entry_t *directory_vector;
+  vlib_stats_shared_header_t *shared_header;
+  vlib_stats_entry_t *directory_vector;
   ssize_t memory_size;
   uint64_t timeout;
 } stat_client_main_t;
@@ -90,9 +91,6 @@ typedef struct
   uint64_t epoch;
 } stat_segment_access_t;
 
-/*
- * Returns 0 on success, -1 on failure (timeout)
- */
 static inline uint64_t
 _time_now_nsec (void)
 {
@@ -101,11 +99,24 @@ _time_now_nsec (void)
   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)
 {
-  stat_segment_shared_header_t *shared_header = sm->shared_header;
+  vlib_stats_shared_header_t *shared_header = sm->shared_header;
   uint64_t max_time;
 
   sa->epoch = shared_header->epoch;
@@ -120,9 +131,8 @@ stat_segment_access_start (stat_segment_access_t * sa,
       while (shared_header->in_progress != 0)
        ;
     }
-  sm->directory_vector = (stat_segment_directory_entry_t *)
-    stat_segment_pointer (sm->shared_header,
-                         sm->shared_header->directory_offset);
+  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;
@@ -137,17 +147,29 @@ 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)
 {
-  stat_segment_shared_header_t *shared_header = sm->shared_header;
+  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 */
 
 /*