Adding upstream version 0.6.0.upstream/0.6.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 134 insertions, 0 deletions

diff --git a/include/ck_hs.h b/include/ck_hs.h
new file mode 100644
index 0000000..b3eb046
--- /dev/null
+++ b/include/ck_hs.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2012-2015 Samy Al Bahra.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef CK_HS_H
+#define CK_HS_H
+
+#include <ck_cc.h>
+#include <ck_malloc.h>
+#include <ck_md.h>
+#include <ck_pr.h>
+#include <ck_stdint.h>
+#include <ck_stdbool.h>
+#include <ck_stddef.h>
+
+/*
+ * Indicates a single-writer many-reader workload. Mutually
+ * exclusive with CK_HS_MODE_MPMC
+ */
+#define CK_HS_MODE_SPMC		1
+
+/*
+ * Indicates that values to be stored are not pointers but
+ * values. Allows for full precision. Mutually exclusive
+ * with CK_HS_MODE_OBJECT.
+ */
+#define CK_HS_MODE_DIRECT	2
+
+/*
+ * Indicates that the values to be stored are pointers.
+ * Allows for space optimizations in the presence of pointer
+ * packing. Mutually exclusive with CK_HS_MODE_DIRECT.
+ */
+#define CK_HS_MODE_OBJECT	8
+
+/*
+ * Indicates a delete-heavy workload. This will reduce the
+ * need for garbage collection at the cost of approximately
+ * 12% to 20% increased memory usage.
+ */
+#define CK_HS_MODE_DELETE	16
+
+/* Currently unsupported. */
+#define CK_HS_MODE_MPMC    (void)
+
+/*
+ * Hash callback function.
+ */
+typedef unsigned long ck_hs_hash_cb_t(const void *, unsigned long);
+
+/*
+ * Returns pointer to object if objects are equivalent.
+ */
+typedef bool ck_hs_compare_cb_t(const void *, const void *);
+
+#if defined(CK_MD_POINTER_PACK_ENABLE) && defined(CK_MD_VMA_BITS)
+#define CK_HS_PP
+#define CK_HS_KEY_MASK ((1U << ((sizeof(void *) * 8) - CK_MD_VMA_BITS)) - 1)
+#endif
+
+struct ck_hs_map;
+struct ck_hs {
+	struct ck_malloc *m;
+	struct ck_hs_map *map;
+	unsigned int mode;
+	unsigned long seed;
+	ck_hs_hash_cb_t *hf;
+	ck_hs_compare_cb_t *compare;
+};
+typedef struct ck_hs ck_hs_t;
+
+struct ck_hs_stat {
+	unsigned long tombstones;
+	unsigned long n_entries;
+	unsigned int probe_maximum;
+};
+
+struct ck_hs_iterator {
+	void **cursor;
+	unsigned long offset;
+};
+typedef struct ck_hs_iterator ck_hs_iterator_t;
+
+#define CK_HS_ITERATOR_INITIALIZER { NULL, 0 }
+
+/* Convenience wrapper to table hash function. */
+#define CK_HS_HASH(T, F, K) F((K), (T)->seed)
+
+typedef void *ck_hs_apply_fn_t(void *, void *);
+bool ck_hs_apply(ck_hs_t *, unsigned long, const void *, ck_hs_apply_fn_t *, void *);
+void ck_hs_iterator_init(ck_hs_iterator_t *);
+bool ck_hs_next(ck_hs_t *, ck_hs_iterator_t *, void **);
+bool ck_hs_move(ck_hs_t *, ck_hs_t *, ck_hs_hash_cb_t *,
+    ck_hs_compare_cb_t *, struct ck_malloc *);
+bool ck_hs_init(ck_hs_t *, unsigned int, ck_hs_hash_cb_t *,
+    ck_hs_compare_cb_t *, struct ck_malloc *, unsigned long, unsigned long);
+void ck_hs_destroy(ck_hs_t *);
+void *ck_hs_get(ck_hs_t *, unsigned long, const void *);
+bool ck_hs_put(ck_hs_t *, unsigned long, const void *);
+bool ck_hs_put_unique(ck_hs_t *, unsigned long, const void *);
+bool ck_hs_set(ck_hs_t *, unsigned long, const void *, void **);
+bool ck_hs_fas(ck_hs_t *, unsigned long, const void *, void **);
+void *ck_hs_remove(ck_hs_t *, unsigned long, const void *);
+bool ck_hs_grow(ck_hs_t *, unsigned long);
+bool ck_hs_rebuild(ck_hs_t *);
+bool ck_hs_gc(ck_hs_t *, unsigned long, unsigned long);
+unsigned long ck_hs_count(ck_hs_t *);
+bool ck_hs_reset(ck_hs_t *);
+bool ck_hs_reset_size(ck_hs_t *, unsigned long);
+void ck_hs_stat(ck_hs_t *, struct ck_hs_stat *);
+
+#endif /* CK_HS_H */