Setting tag sliver-openvswitch-2.2.90-1

[sliver-openvswitch.git] / lib / coverage.h

diff --git a/lib/coverage.h b/lib/coverage.h
index 3d1a115..0b41b00 100644 (file)
--- a/lib/coverage.h
+++ b/lib/coverage.h
@@ -29,17 +29,36 @@
 
 #include "ovs-thread.h"
 #include "vlog.h"
+#include "compiler.h"
+
+/* Makes coverage_run run every 5000 ms (5 seconds).
+ * If this value is redefined, the new value must
+ * divide 60000 (1 minute). */
+#define COVERAGE_RUN_INTERVAL    5000
+BUILD_ASSERT_DECL(60000 % COVERAGE_RUN_INTERVAL == 0);
+
+#define COVERAGE_CLEAR_INTERVAL  1000
+BUILD_ASSERT_DECL(COVERAGE_RUN_INTERVAL % COVERAGE_CLEAR_INTERVAL == 0);
+
+/* Defines the moving average array length. */
+#define MIN_AVG_LEN (60000/COVERAGE_RUN_INTERVAL)
+#define HR_AVG_LEN  60
 
 /* A coverage counter. */
 struct coverage_counter {
     const char *const name;            /* Textual name. */
     unsigned int (*const count)(void); /* Gets, zeros this thread's count. */
     unsigned long long int total;      /* Total count. */
+    unsigned long long int last_total;
+    /* The moving average arrays. */
+    unsigned int min[MIN_AVG_LEN];
+    unsigned int hr[HR_AVG_LEN];
 };
 
+void coverage_counter_register(struct coverage_counter*);
+
 /* Defines COUNTER.  There must be exactly one such definition at file scope
  * within a program. */
-#if USE_LINKER_SECTIONS
 #define COVERAGE_DEFINE(COUNTER)                                        \
         DEFINE_STATIC_PER_THREAD_DATA(unsigned int,                     \
                                       counter_##COUNTER, 0);            \
@@ -56,20 +75,10 @@ struct coverage_counter {
         }                                                               \
         extern struct coverage_counter counter_##COUNTER;               \
         struct coverage_counter counter_##COUNTER                       \
-            = { #COUNTER, COUNTER##_count, 0 };                         \
-        extern struct coverage_counter *counter_ptr_##COUNTER;          \
-        struct coverage_counter *counter_ptr_##COUNTER                  \
-            __attribute__((section("coverage"))) = &counter_##COUNTER
-#else
-#define COVERAGE_DEFINE(COUNTER)                                        \
-        DECLARE_EXTERN_PER_THREAD_DATA(unsigned int,                    \
-                                       counter_##COUNTER);              \
-        static inline void COUNTER##_add(unsigned int n)                \
-        {                                                               \
-            *counter_##COUNTER##_get() += n;                            \
-        }                                                               \
-        extern struct coverage_counter counter_##COUNTER
-#endif
+            = { #COUNTER, COUNTER##_count, 0, 0, {0}, {0} };            \
+        OVS_CONSTRUCTOR(COUNTER##_init) {                               \
+            coverage_counter_register(&counter_##COUNTER);              \
+        }
 
 /* Adds 1 to COUNTER. */
 #define COVERAGE_INC(COUNTER) COVERAGE_ADD(COUNTER, 1)
@@ -80,6 +89,7 @@ struct coverage_counter {
 void coverage_init(void);
 void coverage_log(void);
 void coverage_clear(void);
+void coverage_run(void);
 
 /* Implementation detail. */
 #define COVERAGE_DEFINE__(COUNTER)                              \