1 files changed, 84 insertions, 0 deletions
diff --git a/database/engine/rrdenginelib.h b/database/engine/rrdenginelib.h
new file mode 100644
index 00000000..bb6f072b
--- /dev/null
+++ b/database/engine/rrdenginelib.h
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDENGINELIB_H
+#define NETDATA_RRDENGINELIB_H
+
+#include "rrdengine.h"
+
+/* Forward declarations */
+struct rrdeng_page_cache_descr;
+
+#define STR_HELPER(x) #x
+#define STR(x) STR_HELPER(x)
+
+/* Taken from linux kernel */
+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+
+#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)
+
+typedef uintptr_t rrdeng_stats_t;
+
+#ifdef __ATOMIC_RELAXED
+#define rrd_stat_atomic_add(p, n) do {(void) __atomic_fetch_add(p, n, __ATOMIC_RELAXED);} while(0)
+#else
+#define rrd_stat_atomic_add(p, n) do {(void) __sync_fetch_and_add(p, n);} while(0)
+#endif
+
+#ifndef O_DIRECT
+/* Workaround for OS X */
+#define O_DIRECT (0)
+#endif
+
+struct completion {
+    uv_mutex_t mutex;
+    uv_cond_t cond;
+    volatile unsigned completed;
+};
+
+static inline void init_completion(struct completion *p)
+{
+    p->completed = 0;
+    assert(0 == uv_cond_init(&p->cond));
+    assert(0 == uv_mutex_init(&p->mutex));
+}
+
+static inline void destroy_completion(struct completion *p)
+{
+    uv_cond_destroy(&p->cond);
+    uv_mutex_destroy(&p->mutex);
+}
+
+static inline void wait_for_completion(struct completion *p)
+{
+    uv_mutex_lock(&p->mutex);
+    while (0 == p->completed) {
+        uv_cond_wait(&p->cond, &p->mutex);
+    }
+    assert(1 == p->completed);
+    uv_mutex_unlock(&p->mutex);
+}
+
+static inline void complete(struct completion *p)
+{
+    uv_mutex_lock(&p->mutex);
+    p->completed = 1;
+    uv_mutex_unlock(&p->mutex);
+    uv_cond_broadcast(&p->cond);
+}
+
+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;
+}
+
+extern void print_page_cache_descr(struct rrdeng_page_cache_descr *page_cache_descr);
+extern int check_file_properties(uv_file file, uint64_t *file_size, size_t min_size);
+extern char *get_rrdeng_statistics(struct rrdengine_instance *ctx, char *str, size_t size);
+
+#endif /* NETDATA_RRDENGINELIB_H */
+\ No newline at end of file