1 files changed, 61 insertions, 0 deletions
diff --git a/aclk/mqtt_websockets/c_rhash/c_rhash.h b/aclk/mqtt_websockets/c_rhash/c_rhash.h
new file mode 100644
index 0000000000..37addd1616
--- /dev/null
+++ b/aclk/mqtt_websockets/c_rhash/c_rhash.h
@@ -0,0 +1,61 @@
+// Copyright: SPDX-License-Identifier:  GPL-3.0-only
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#ifndef DEFAULT_BIN_COUNT
+    #define DEFAULT_BIN_COUNT 1000
+#endif
+
+#define ITEMTYPE_UNSET      (0x0)
+#define ITEMTYPE_STRING     (0x1)
+#define ITEMTYPE_UINT8      (0x2)
+#define ITEMTYPE_UINT64     (0x3)
+#define ITEMTYPE_OPAQUE_PTR (0x4)
+
+typedef struct c_rhash_s *c_rhash;
+
+c_rhash c_rhash_new(size_t bin_count);
+
+void c_rhash_destroy(c_rhash hash);
+
+// # Insert
+// ## Insert where key is string
+int c_rhash_insert_str_ptr(c_rhash hash, const char *key, void *value);
+int c_rhash_insert_str_uint8(c_rhash hash, const char *key, uint8_t value);
+// ## Insert where key is uint64
+int c_rhash_insert_uint64_ptr(c_rhash hash, uint64_t key, void *value);
+
+// # Get
+// ## Get where key is string
+int c_rhash_get_ptr_by_str(c_rhash hash, const char *key, void **ret_val);
+int c_rhash_get_uint8_by_str(c_rhash hash, const char *key, uint8_t *ret_val);
+// ## Get where key is uint64
+int c_rhash_get_ptr_by_uint64(c_rhash hash, uint64_t key, void **ret_val);
+
+typedef struct {
+    size_t bin;
+    struct bin_item *item;
+    int initialized;
+} c_rhash_iter_t;
+
+#define C_RHASH_ITER_T_INITIALIZER { .bin = 0, .item = NULL, .initialized = 0 }
+
+#define c_rhash_iter_t_initialize(p_iter) memset(p_iter, 0, sizeof(c_rhash_iter_t))
+
+/* 
+ * goes trough whole hash map and returns every
+ * type uint64 key present/stored
+ * 
+ * it is not necessary to finish iterating and iterator can be reinitialized
+ * there are no guarantees on the order in which the keys will come
+ * behavior here is implementation dependent and can change any time
+ * 
+ * returns:
+ *     0 for every key and stores the key in *key
+ *     1 on error or when all keys of this type has been already iterated over
+ */
+int c_rhash_iter_uint64_keys(c_rhash hash, c_rhash_iter_t *iter, uint64_t *key);
+
+int c_rhash_iter_str_keys(c_rhash hash, c_rhash_iter_t *iter, const char **key);