113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
#ifndef SHEREDOM_HASHMAP_H_INCLUDED
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#define SHEREDOM_HASHMAP_H_INCLUDED
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#if defined(_MSC_VER)
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// Workaround a bug in the MSVC runtime where it uses __cplusplus when not
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// defined.
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#pragma warning(push, 0)
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#pragma warning(disable : 4668)
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include "nng/nng.h"
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#include "nng/supplemental/util/platform.h"
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#if (defined(_MSC_VER) && defined(__AVX__)) || \
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(!defined(_MSC_VER) && defined(__SSE4_2__))
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#define HASHMAP_SSE42
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#endif
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#if defined(HASHMAP_SSE42)
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#include <nmmintrin.h>
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#endif
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#if defined(_MSC_VER)
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#pragma warning(pop)
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#endif
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#if defined(_MSC_VER)
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#pragma warning(push)
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/* Stop MSVC complaining about unreferenced functions */
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#pragma warning(disable : 4505)
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/* Stop MSVC complaining about not inlining functions */
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#pragma warning(disable : 4710)
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/* Stop MSVC complaining about inlining functions! */
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#pragma warning(disable : 4711)
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#elif defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunused-function"
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#endif
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#if defined(_MSC_VER)
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#define HASHMAP_USED
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#elif defined(__GNUC__)
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#define HASHMAP_USED __attribute__((used))
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#else
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#define HASHMAP_USED
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#endif
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typedef struct hashmap_s hashmap_s;
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/* We need to keep keys and values. */
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struct hashmap_element_s {
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const char *key;
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unsigned key_len;
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int in_use;
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uint32_t data;
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};
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/* A hashmap has some maximum size and current size, as well as the data to
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* hold. */
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struct hashmap_s {
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unsigned table_size;
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unsigned size;
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struct hashmap_element_s *data;
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};
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#define HASHMAP_MAX_CHAIN_LENGTH (8)
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#if defined(__cplusplus)
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extern "C" {
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#endif
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int nano_hashmap_create(const unsigned initial_size,
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struct hashmap_s * out_hashmap) HASHMAP_USED;
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int nano_hashmap_put(struct hashmap_s * hashmap, const char *const key,
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const unsigned len, uint32_t value) HASHMAP_USED;
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uint32_t nano_hashmap_get(const struct hashmap_s *const hashmap,
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const char *const key,
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const unsigned len) HASHMAP_USED;
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int nano_hashmap_remove(struct hashmap_s * m, const char *const key,
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const unsigned len);
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void nano_hashmap_destroy(struct hashmap_s * m);
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#if defined(__cplusplus)
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}
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#endif
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#if defined(__cplusplus)
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#define HASHMAP_CAST(type, x) static_cast<type>(x)
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#define HASHMAP_PTR_CAST(type, x) reinterpret_cast<type>(x)
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#define HASHMAP_NULL NULL
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#else
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#define HASHMAP_CAST(type, x) ((type)x)
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#define HASHMAP_PTR_CAST(type, x) ((type)x)
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#define HASHMAP_NULL 0
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#endif
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#if defined(_MSC_VER)
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#pragma warning(pop)
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#elif defined(__clang__)
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#pragma clang diagnostic pop
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#endif
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#endif |