SoW-2020-0002: Trace Hit Counters

[deliverable/lttng-ust.git] / libcounter / counter.h

diff --git a/libcounter/counter.h b/libcounter/counter.h
index e325fc870f6b08e6f0a947ee82687b60e168d7af..ef66b2e81b52d0a4c93c5f330be08fe9a1301f63 100644 (file)
--- a/libcounter/counter.h
+++ b/libcounter/counter.h
@@ -1,33 +1,16 @@
 /*
- * lttng/counter.h
- *
- * LTTng Counters API
+ * SPDX-License-Identifier: MIT
  *
  * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * LTTng Counters API
  */
 
 #ifndef _LTTNG_COUNTER_H
 #define _LTTNG_COUNTER_H
 
 #include <stdint.h>
+#include <stdbool.h>
 #include <lttng/ust-config.h>
 #include "counter-types.h"
 #include "helper.h"
@@ -55,6 +38,12 @@ int lttng_counter_get_global_shm(struct lib_counter *counter, int *fd, size_t *l
 LTTNG_HIDDEN
 int lttng_counter_get_cpu_shm(struct lib_counter *counter, int cpu, int *fd, size_t *len);
 
+/*
+ * Has counter received all expected shm ?
+ */
+LTTNG_HIDDEN
+bool lttng_counter_ready(struct lib_counter *counter);
+
 LTTNG_HIDDEN
 int lttng_counter_read(const struct lib_counter_config *config,
                       struct lib_counter *counter,