Prepare Open vSwitch 1.1.2 release.

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

diff --git a/lib/coverage.h b/lib/coverage.h
index 98b6a85..d816fb6 100644 (file)
--- a/lib/coverage.h
+++ b/lib/coverage.h
@@ -1,17 +1,17 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
  *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
  *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 #ifndef COVERAGE_H
@@ -36,23 +36,30 @@ struct coverage_counter {
     unsigned long long int total; /* Total count over all epochs. */
 };
 
-/* Increments the counter with the given NAME.  Coverage counters need not be
- * declared explicitly, but when you add the first coverage counter to a given
- * file, you must also add that file to COVERAGE_FILES in lib/automake.mk. */
-#define COVERAGE_INC(NAME)                              \
-    do {                                                \
-        extern struct coverage_counter NAME##_count;    \
-        NAME##_count.count++;                           \
-    } while (0)
-
-/* Adds AMOUNT to the coverage counter with the given NAME. */
-#define COVERAGE_ADD(NAME, AMOUNT)                      \
-    do {                                                \
-        extern struct coverage_counter NAME##_count;    \
-        NAME##_count.count += AMOUNT;                   \
-    } while (0)
-
-void coverage_log(enum vlog_level);
+/* Defines COUNTER.  There must be exactly one such definition at file scope
+ * within a program. */
+#if USE_LINKER_SECTIONS
+#define COVERAGE_DEFINE(COUNTER)                                        \
+        COVERAGE_DEFINE__(COUNTER);                                     \
+        struct coverage_counter *counter_ptr_##COUNTER                  \
+            __attribute__((section("coverage"))) = &counter_##COUNTER
+#else
+#define COVERAGE_DEFINE(MODULE) \
+        extern struct coverage_counter counter_##MODULE
+#endif
+
+/* Adds 1 to COUNTER. */
+#define COVERAGE_INC(COUNTER) counter_##COUNTER.count++;
+
+/* Adds AMOUNT to COUNTER. */
+#define COVERAGE_ADD(COUNTER, AMOUNT) counter_##COUNTER.count += (AMOUNT);
+
+void coverage_init(void);
+void coverage_log(enum vlog_level, bool suppress_dups);
 void coverage_clear(void);
 
+/* Implementation detail. */
+#define COVERAGE_DEFINE__(COUNTER)                              \
+        struct coverage_counter counter_##COUNTER = { #COUNTER, 0, 0 }
+
 #endif /* coverage.h */