Implement libcounter

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

diff --git a/libcounter/shm_types.h b/libcounter/shm_types.h
new file mode 100644 (file)
index 0000000..2086a83
--- /dev/null
+++ b/libcounter/shm_types.h
@@ -0,0 +1,54 @@
+#ifndef _LIBCOUNTER_SHM_TYPES_H
+#define _LIBCOUNTER_SHM_TYPES_H
+
+/*
+ * libcounter/shm_types.h
+ *
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+#include <limits.h>
+#include "shm_internal.h"
+
+enum lttng_counter_shm_object_type {
+       LTTNG_COUNTER_SHM_OBJECT_SHM,
+       LTTNG_COUNTER_SHM_OBJECT_MEM,
+};
+
+struct lttng_counter_shm_object {
+       enum lttng_counter_shm_object_type type;
+       size_t index;   /* within the object table */
+       int shm_fd;     /* shm fd */
+       char *memory_map;
+       size_t memory_map_size;
+       uint64_t allocated_len;
+       int shm_fd_ownership;
+};
+
+struct lttng_counter_shm_object_table {
+       size_t size;
+       size_t allocated_len;
+       struct lttng_counter_shm_object objects[];
+};
+
+struct lttng_counter_shm_handle {
+       struct lttng_counter_shm_object_table *table;
+};
+
+#endif /* _LIBCOUNTER_SHM_TYPES_H */