Implement libcounter

[deliverable/lttng-ust.git] / include / lttng / counter-config.h

diff --git a/include/lttng/counter-config.h b/include/lttng/counter-config.h
new file mode 100644 (file)
index 0000000..ebe1536
--- /dev/null
+++ b/include/lttng/counter-config.h
@@ -0,0 +1,57 @@
+/*
+ * lttng/counter-config.h
+ *
+ * LTTng Counters Configuration
+ *
+ * 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.
+ */
+
+#ifndef _LTTNG_COUNTER_CONFIG_H
+#define _LTTNG_COUNTER_CONFIG_H
+
+#include <stdint.h>
+
+enum lib_counter_config_alloc {
+       COUNTER_ALLOC_PER_CPU = (1 << 0),
+       COUNTER_ALLOC_GLOBAL  = (1 << 1),
+};
+
+enum lib_counter_config_sync {
+       COUNTER_SYNC_PER_CPU,
+       COUNTER_SYNC_GLOBAL,
+};
+
+struct lib_counter_config {
+       uint32_t alloc; /* enum lib_counter_config_alloc flags */
+       enum lib_counter_config_sync sync;
+       enum {
+               COUNTER_ARITHMETIC_MODULAR,
+               COUNTER_ARITHMETIC_SATURATE,    /* TODO */
+       } arithmetic;
+       enum {
+               COUNTER_SIZE_8_BIT      = 1,
+               COUNTER_SIZE_16_BIT     = 2,
+               COUNTER_SIZE_32_BIT     = 4,
+               COUNTER_SIZE_64_BIT     = 8,
+       } counter_size;
+};
+
+#endif /* _LTTNG_COUNTER_CONFIG_H */