1 files changed, 102 insertions, 0 deletions
diff --git a/database/engine/rrdenginelib.h b/database/engine/rrdenginelib.h
new file mode 100644
index 0000000..6b1a15f
--- /dev/null
+++ b/database/engine/rrdenginelib.h
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDENGINELIB_H
+#define NETDATA_RRDENGINELIB_H
+
+#include "libnetdata/libnetdata.h"
+
+/* Forward declarations */
+struct rrdeng_page_descr;
+struct rrdengine_instance;
+
+#define STR_HELPER(x) #x
+#define STR(x) STR_HELPER(x)
+
+#define BITS_PER_ULONG (sizeof(unsigned long) * 8)
+
+#define ALIGN_BYTES_FLOOR(x) (((x) / RRDENG_BLOCK_SIZE) * RRDENG_BLOCK_SIZE)
+#define ALIGN_BYTES_CEILING(x) ((((x) + RRDENG_BLOCK_SIZE - 1) / RRDENG_BLOCK_SIZE) * RRDENG_BLOCK_SIZE)
+
+#define ROUND_USEC_TO_SEC(x) (((x) + USEC_PER_SEC / 2 - 1) / USEC_PER_SEC)
+
+typedef uintptr_t rrdeng_stats_t;
+
+#ifdef __ATOMIC_RELAXED
+#define rrd_atomic_fetch_add(p, n) __atomic_fetch_add(p, n, __ATOMIC_RELAXED)
+#define rrd_atomic_add_fetch(p, n) __atomic_add_fetch(p, n, __ATOMIC_RELAXED)
+#else
+#define rrd_atomic_fetch_add(p, n) __sync_fetch_and_add(p, n)
+#define rrd_atomic_add_fetch(p, n) __sync_add_and_fetch(p, n)
+#endif
+
+#define rrd_stat_atomic_add(p, n) rrd_atomic_fetch_add(p, n)
+
+/* returns -1 if it didn't find the first cleared bit, the position otherwise. Starts from LSB. */
+static inline int find_first_zero(unsigned x)
+{
+    return ffs((int)(~x)) - 1;
+}
+
+/* Starts from LSB. */
+static inline uint8_t check_bit(unsigned x, size_t pos)
+{
+    return !!(x & (1 << pos));
+}
+
+/* Starts from LSB. val is 0 or 1 */
+static inline void modify_bit(unsigned *x, unsigned pos, uint8_t val)
+{
+    switch(val) {
+    case 0:
+        *x &= ~(1U << pos);
+        break;
+    case 1:
+        *x |= 1U << pos;
+        break;
+    default:
+        error("modify_bit() called with invalid argument.");
+        break;
+    }
+}
+
+#define RRDENG_PATH_MAX (4096)
+
+/* returns old *ptr value */
+static inline unsigned long ulong_compare_and_swap(volatile unsigned long *ptr,
+                                                   unsigned long oldval, unsigned long newval)
+{
+    return __sync_val_compare_and_swap(ptr, oldval, newval);
+}
+
+#ifndef O_DIRECT
+/* Workaround for OS X */
+#define O_DIRECT (0)
+#endif
+
+static inline int crc32cmp(void *crcp, uLong crc)
+{
+    return (*(uint32_t *)crcp != crc);
+}
+
+static inline void crc32set(void *crcp, uLong crc)
+{
+    *(uint32_t *)crcp = crc;
+}
+
+void print_page_cache_descr(struct rrdeng_page_descr *descr, const char *msg, bool log_debug);
+void print_page_descr(struct rrdeng_page_descr *descr);
+int check_file_properties(uv_file file, uint64_t *file_size, size_t min_size);
+int open_file_for_io(char *path, int flags, uv_file *file, int direct);
+static inline int open_file_direct_io(char *path, int flags, uv_file *file)
+{
+    return open_file_for_io(path, flags, file, 1);
+}
+static inline int open_file_buffered_io(char *path, int flags, uv_file *file)
+{
+    return open_file_for_io(path, flags, file, 0);
+}
+char *get_rrdeng_statistics(struct rrdengine_instance *ctx, char *str, size_t size);
+int compute_multidb_diskspace();
+int is_legacy_child(const char *machine_guid);
+
+#endif /* NETDATA_RRDENGINELIB_H */