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authorBaptiste Daroussin <bapt@FreeBSD.org>2016-12-25 05:44:01 +0300
committerBaptiste Daroussin <bapt@FreeBSD.org>2016-12-25 05:44:01 +0300
commitbc4e83f2fa591205b9eb41fd6c3497d4b1f26430 (patch)
tree369aad3d196ae7e491a5b59d1ae107633e7eb7e4 /external
parent8ed0abee41f3aef46ec9625ad926c236f4565def (diff)
Use khash instead of uthash, it is a bit faster and consumer less memory
Diffstat (limited to 'external')
-rw-r--r--external/klib/khash.h627
-rw-r--r--external/uthash/uthash.h958
2 files changed, 627 insertions, 958 deletions
diff --git a/external/klib/khash.h b/external/klib/khash.h
new file mode 100644
index 00000000..e44f3288
--- /dev/null
+++ b/external/klib/khash.h
@@ -0,0 +1,627 @@
+/* The MIT License
+
+ Copyright (c) 2008, 2009, 2011 by Attractive Chaos <attractor@live.co.uk>
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+*/
+
+/*
+ An example:
+
+#include "khash.h"
+KHASH_MAP_INIT_INT(32, char)
+int main() {
+ int ret, is_missing;
+ khiter_t k;
+ khash_t(32) *h = kh_init(32);
+ k = kh_put(32, h, 5, &ret);
+ kh_value(h, k) = 10;
+ k = kh_get(32, h, 10);
+ is_missing = (k == kh_end(h));
+ k = kh_get(32, h, 5);
+ kh_del(32, h, k);
+ for (k = kh_begin(h); k != kh_end(h); ++k)
+ if (kh_exist(h, k)) kh_value(h, k) = 1;
+ kh_destroy(32, h);
+ return 0;
+}
+*/
+
+/*
+ 2013-05-02 (0.2.8):
+
+ * Use quadratic probing. When the capacity is power of 2, stepping function
+ i*(i+1)/2 guarantees to traverse each bucket. It is better than double
+ hashing on cache performance and is more robust than linear probing.
+
+ In theory, double hashing should be more robust than quadratic probing.
+ However, my implementation is probably not for large hash tables, because
+ the second hash function is closely tied to the first hash function,
+ which reduce the effectiveness of double hashing.
+
+ Reference: http://research.cs.vt.edu/AVresearch/hashing/quadratic.php
+
+ 2011-12-29 (0.2.7):
+
+ * Minor code clean up; no actual effect.
+
+ 2011-09-16 (0.2.6):
+
+ * The capacity is a power of 2. This seems to dramatically improve the
+ speed for simple keys. Thank Zilong Tan for the suggestion. Reference:
+
+ - http://code.google.com/p/ulib/
+ - http://nothings.org/computer/judy/
+
+ * Allow to optionally use linear probing which usually has better
+ performance for random input. Double hashing is still the default as it
+ is more robust to certain non-random input.
+
+ * Added Wang's integer hash function (not used by default). This hash
+ function is more robust to certain non-random input.
+
+ 2011-02-14 (0.2.5):
+
+ * Allow to declare global functions.
+
+ 2009-09-26 (0.2.4):
+
+ * Improve portability
+
+ 2008-09-19 (0.2.3):
+
+ * Corrected the example
+ * Improved interfaces
+
+ 2008-09-11 (0.2.2):
+
+ * Improved speed a little in kh_put()
+
+ 2008-09-10 (0.2.1):
+
+ * Added kh_clear()
+ * Fixed a compiling error
+
+ 2008-09-02 (0.2.0):
+
+ * Changed to token concatenation which increases flexibility.
+
+ 2008-08-31 (0.1.2):
+
+ * Fixed a bug in kh_get(), which has not been tested previously.
+
+ 2008-08-31 (0.1.1):
+
+ * Added destructor
+*/
+
+
+#ifndef __AC_KHASH_H
+#define __AC_KHASH_H
+
+/*!
+ @header
+
+ Generic hash table library.
+ */
+
+#define AC_VERSION_KHASH_H "0.2.8"
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+/* compiler specific configuration */
+
+#if UINT_MAX == 0xffffffffu
+typedef unsigned int khint32_t;
+#elif ULONG_MAX == 0xffffffffu
+typedef unsigned long khint32_t;
+#endif
+
+#if ULONG_MAX == ULLONG_MAX
+typedef unsigned long khint64_t;
+#else
+typedef unsigned long long khint64_t;
+#endif
+
+#ifndef kh_inline
+#ifdef _MSC_VER
+#define kh_inline __inline
+#else
+#define kh_inline inline
+#endif
+#endif /* kh_inline */
+
+#ifndef klib_unused
+#if (defined __clang__ && __clang_major__ >= 3) || (defined __GNUC__ && __GNUC__ >= 3)
+#define klib_unused __attribute__ ((__unused__))
+#else
+#define klib_unused
+#endif
+#endif /* klib_unused */
+
+typedef khint32_t khint_t;
+typedef khint_t khiter_t;
+
+#define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2)
+#define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1)
+#define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3)
+#define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1)))
+#define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1)))
+#define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1)))
+#define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1))
+
+#define __ac_fsize(m) ((m) < 16? 1 : (m)>>4)
+
+#ifndef kroundup32
+#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
+#endif
+
+#ifndef kcalloc
+#define kcalloc(N,Z) calloc(N,Z)
+#endif
+#ifndef kmalloc
+#define kmalloc(Z) malloc(Z)
+#endif
+#ifndef krealloc
+#define krealloc(P,Z) realloc(P,Z)
+#endif
+#ifndef kfree
+#define kfree(P) free(P)
+#endif
+
+static const double __ac_HASH_UPPER = 0.77;
+
+#define __KHASH_TYPE(name, khkey_t, khval_t) \
+ typedef struct kh_##name##_s { \
+ khint_t n_buckets, size, n_occupied, upper_bound; \
+ khint32_t *flags; \
+ khkey_t *keys; \
+ khval_t *vals; \
+ } kh_##name##_t;
+
+#define __KHASH_PROTOTYPES(name, khkey_t, khval_t) \
+ extern kh_##name##_t *kh_init_##name(void); \
+ extern void kh_destroy_##name(kh_##name##_t *h); \
+ extern void kh_clear_##name(kh_##name##_t *h); \
+ extern khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key); \
+ extern int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets); \
+ extern khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret); \
+ extern void kh_del_##name(kh_##name##_t *h, khint_t x);
+
+#define __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
+ SCOPE kh_##name##_t *kh_init_##name(void) { \
+ return (kh_##name##_t*)kcalloc(1, sizeof(kh_##name##_t)); \
+ } \
+ SCOPE void kh_destroy_##name(kh_##name##_t *h) \
+ { \
+ if (h) { \
+ kfree((void *)h->keys); kfree(h->flags); \
+ kfree((void *)h->vals); \
+ kfree(h); \
+ } \
+ } \
+ SCOPE void kh_clear_##name(kh_##name##_t *h) \
+ { \
+ if (h && h->flags) { \
+ memset(h->flags, 0xaa, __ac_fsize(h->n_buckets) * sizeof(khint32_t)); \
+ h->size = h->n_occupied = 0; \
+ } \
+ } \
+ SCOPE khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key) \
+ { \
+ if (h->n_buckets) { \
+ khint_t k, i, last, mask, step = 0; \
+ mask = h->n_buckets - 1; \
+ k = __hash_func(key); i = k & mask; \
+ last = i; \
+ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
+ i = (i + (++step)) & mask; \
+ if (i == last) return h->n_buckets; \
+ } \
+ return __ac_iseither(h->flags, i)? h->n_buckets : i; \
+ } else return 0; \
+ } \
+ SCOPE int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \
+ { /* This function uses 0.25*n_buckets bytes of working space instead of [sizeof(key_t+val_t)+.25]*n_buckets. */ \
+ khint32_t *new_flags = 0; \
+ khint_t j = 1; \
+ { \
+ kroundup32(new_n_buckets); \
+ if (new_n_buckets < 4) new_n_buckets = 4; \
+ if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; /* requested size is too small */ \
+ else { /* hash table size to be changed (shrink or expand); rehash */ \
+ new_flags = (khint32_t*)kmalloc(__ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
+ if (!new_flags) return -1; \
+ memset(new_flags, 0xaa, __ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
+ if (h->n_buckets < new_n_buckets) { /* expand */ \
+ khkey_t *new_keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
+ if (!new_keys) { kfree(new_flags); return -1; } \
+ h->keys = new_keys; \
+ if (kh_is_map) { \
+ khval_t *new_vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
+ if (!new_vals) { kfree(new_flags); return -1; } \
+ h->vals = new_vals; \
+ } \
+ } /* otherwise shrink */ \
+ } \
+ } \
+ if (j) { /* rehashing is needed */ \
+ for (j = 0; j != h->n_buckets; ++j) { \
+ if (__ac_iseither(h->flags, j) == 0) { \
+ khkey_t key = h->keys[j]; \
+ khval_t val; \
+ khint_t new_mask; \
+ new_mask = new_n_buckets - 1; \
+ if (kh_is_map) val = h->vals[j]; \
+ __ac_set_isdel_true(h->flags, j); \
+ while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \
+ khint_t k, i, step = 0; \
+ k = __hash_func(key); \
+ i = k & new_mask; \
+ while (!__ac_isempty(new_flags, i)) i = (i + (++step)) & new_mask; \
+ __ac_set_isempty_false(new_flags, i); \
+ if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { /* kick out the existing element */ \
+ { khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \
+ if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \
+ __ac_set_isdel_true(h->flags, i); /* mark it as deleted in the old hash table */ \
+ } else { /* write the element and jump out of the loop */ \
+ h->keys[i] = key; \
+ if (kh_is_map) h->vals[i] = val; \
+ break; \
+ } \
+ } \
+ } \
+ } \
+ if (h->n_buckets > new_n_buckets) { /* shrink the hash table */ \
+ h->keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
+ if (kh_is_map) h->vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
+ } \
+ kfree(h->flags); /* free the working space */ \
+ h->flags = new_flags; \
+ h->n_buckets = new_n_buckets; \
+ h->n_occupied = h->size; \
+ h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \
+ } \
+ return 0; \
+ } \
+ SCOPE khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \
+ { \
+ khint_t x; \
+ if (h->n_occupied >= h->upper_bound) { /* update the hash table */ \
+ if (h->n_buckets > (h->size<<1)) { \
+ if (kh_resize_##name(h, h->n_buckets - 1) < 0) { /* clear "deleted" elements */ \
+ *ret = -1; return h->n_buckets; \
+ } \
+ } else if (kh_resize_##name(h, h->n_buckets + 1) < 0) { /* expand the hash table */ \
+ *ret = -1; return h->n_buckets; \
+ } \
+ } /* TODO: to implement automatically shrinking; resize() already support shrinking */ \
+ { \
+ khint_t k, i, site, last, mask = h->n_buckets - 1, step = 0; \
+ x = site = h->n_buckets; k = __hash_func(key); i = k & mask; \
+ if (__ac_isempty(h->flags, i)) x = i; /* for speed up */ \
+ else { \
+ last = i; \
+ while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
+ if (__ac_isdel(h->flags, i)) site = i; \
+ i = (i + (++step)) & mask; \
+ if (i == last) { x = site; break; } \
+ } \
+ if (x == h->n_buckets) { \
+ if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \
+ else x = i; \
+ } \
+ } \
+ } \
+ if (__ac_isempty(h->flags, x)) { /* not present at all */ \
+ h->keys[x] = key; \
+ __ac_set_isboth_false(h->flags, x); \
+ ++h->size; ++h->n_occupied; \
+ *ret = 1; \
+ } else if (__ac_isdel(h->flags, x)) { /* deleted */ \
+ h->keys[x] = key; \
+ __ac_set_isboth_false(h->flags, x); \
+ ++h->size; \
+ *ret = 2; \
+ } else *ret = 0; /* Don't touch h->keys[x] if present and not deleted */ \
+ return x; \
+ } \
+ SCOPE void kh_del_##name(kh_##name##_t *h, khint_t x) \
+ { \
+ if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \
+ __ac_set_isdel_true(h->flags, x); \
+ --h->size; \
+ } \
+ }
+
+#define KHASH_DECLARE(name, khkey_t, khval_t) \
+ __KHASH_TYPE(name, khkey_t, khval_t) \
+ __KHASH_PROTOTYPES(name, khkey_t, khval_t)
+
+#define KHASH_INIT2(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
+ __KHASH_TYPE(name, khkey_t, khval_t) \
+ __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
+
+#define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
+ KHASH_INIT2(name, static kh_inline klib_unused, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
+
+/* --- BEGIN OF HASH FUNCTIONS --- */
+
+/*! @function
+ @abstract Integer hash function
+ @param key The integer [khint32_t]
+ @return The hash value [khint_t]
+ */
+#define kh_int_hash_func(key) (khint32_t)(key)
+/*! @function
+ @abstract Integer comparison function
+ */
+#define kh_int_hash_equal(a, b) ((a) == (b))
+/*! @function
+ @abstract 64-bit integer hash function
+ @param key The integer [khint64_t]
+ @return The hash value [khint_t]
+ */
+#define kh_int64_hash_func(key) (khint32_t)((key)>>33^(key)^(key)<<11)
+/*! @function
+ @abstract 64-bit integer comparison function
+ */
+#define kh_int64_hash_equal(a, b) ((a) == (b))
+/*! @function
+ @abstract const char* hash function
+ @param s Pointer to a null terminated string
+ @return The hash value
+ */
+static kh_inline khint_t __ac_X31_hash_string(const char *s)
+{
+ khint_t h = (khint_t)*s;
+ if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s;
+ return h;
+}
+/*! @function
+ @abstract Another interface to const char* hash function
+ @param key Pointer to a null terminated string [const char*]
+ @return The hash value [khint_t]
+ */
+#define kh_str_hash_func(key) __ac_X31_hash_string(key)
+/*! @function
+ @abstract Const char* comparison function
+ */
+#define kh_str_hash_equal(a, b) (strcmp(a, b) == 0)
+
+static kh_inline khint_t __ac_Wang_hash(khint_t key)
+{
+ key += ~(key << 15);
+ key ^= (key >> 10);
+ key += (key << 3);
+ key ^= (key >> 6);
+ key += ~(key << 11);
+ key ^= (key >> 16);
+ return key;
+}
+#define kh_int_hash_func2(key) __ac_Wang_hash((khint_t)key)
+
+/* --- END OF HASH FUNCTIONS --- */
+
+/* Other convenient macros... */
+
+/*!
+ @abstract Type of the hash table.
+ @param name Name of the hash table [symbol]
+ */
+#define khash_t(name) kh_##name##_t
+
+/*! @function
+ @abstract Initiate a hash table.
+ @param name Name of the hash table [symbol]
+ @return Pointer to the hash table [khash_t(name)*]
+ */
+#define kh_init(name) kh_init_##name()
+
+/*! @function
+ @abstract Destroy a hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ */
+#define kh_destroy(name, h) kh_destroy_##name(h)
+
+/*! @function
+ @abstract Reset a hash table without deallocating memory.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ */
+#define kh_clear(name, h) kh_clear_##name(h)
+
+/*! @function
+ @abstract Resize a hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param s New size [khint_t]
+ */
+#define kh_resize(name, h, s) kh_resize_##name(h, s)
+
+/*! @function
+ @abstract Insert a key to the hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param k Key [type of keys]
+ @param r Extra return code: -1 if the operation failed;
+ 0 if the key is present in the hash table;
+ 1 if the bucket is empty (never used); 2 if the element in
+ the bucket has been deleted [int*]
+ @return Iterator to the inserted element [khint_t]
+ */
+#define kh_put(name, h, k, r) kh_put_##name(h, k, r)
+
+/*! @function
+ @abstract Retrieve a key from the hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param k Key [type of keys]
+ @return Iterator to the found element, or kh_end(h) if the element is absent [khint_t]
+ */
+#define kh_get(name, h, k) kh_get_##name(h, k)
+
+/*! @function
+ @abstract Remove a key from the hash table.
+ @param name Name of the hash table [symbol]
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param k Iterator to the element to be deleted [khint_t]
+ */
+#define kh_del(name, h, k) kh_del_##name(h, k)
+
+/*! @function
+ @abstract Test whether a bucket contains data.
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param x Iterator to the bucket [khint_t]
+ @return 1 if containing data; 0 otherwise [int]
+ */
+#define kh_exist(h, x) (!__ac_iseither((h)->flags, (x)))
+
+/*! @function
+ @abstract Get key given an iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param x Iterator to the bucket [khint_t]
+ @return Key [type of keys]
+ */
+#define kh_key(h, x) ((h)->keys[x])
+
+/*! @function
+ @abstract Get value given an iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param x Iterator to the bucket [khint_t]
+ @return Value [type of values]
+ @discussion For hash sets, calling this results in segfault.
+ */
+#define kh_val(h, x) ((h)->vals[x])
+
+/*! @function
+ @abstract Alias of kh_val()
+ */
+#define kh_value(h, x) ((h)->vals[x])
+
+/*! @function
+ @abstract Get the start iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return The start iterator [khint_t]
+ */
+#define kh_begin(h) (khint_t)(0)
+
+/*! @function
+ @abstract Get the end iterator
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return The end iterator [khint_t]
+ */
+#define kh_end(h) ((h)->n_buckets)
+
+/*! @function
+ @abstract Get the number of elements in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return Number of elements in the hash table [khint_t]
+ */
+#define kh_size(h) ((h)->size)
+
+/*! @function
+ @abstract Get the number of buckets in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @return Number of buckets in the hash table [khint_t]
+ */
+#define kh_n_buckets(h) ((h)->n_buckets)
+
+/*! @function
+ @abstract Iterate over the entries in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param kvar Variable to which key will be assigned
+ @param vvar Variable to which value will be assigned
+ @param code Block of code to execute
+ */
+#define kh_foreach(h, kvar, vvar, code) { khint_t __i; \
+ for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
+ if (!kh_exist(h,__i)) continue; \
+ (kvar) = kh_key(h,__i); \
+ (vvar) = kh_val(h,__i); \
+ code; \
+ } }
+
+/*! @function
+ @abstract Iterate over the values in the hash table
+ @param h Pointer to the hash table [khash_t(name)*]
+ @param vvar Variable to which value will be assigned
+ @param code Block of code to execute
+ */
+#define kh_foreach_value(h, vvar, code) { khint_t __i; \
+ for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
+ if (!kh_exist(h,__i)) continue; \
+ (vvar) = kh_val(h,__i); \
+ code; \
+ } }
+
+/* More conenient interfaces */
+
+/*! @function
+ @abstract Instantiate a hash set containing integer keys
+ @param name Name of the hash table [symbol]
+ */
+#define KHASH_SET_INIT_INT(name) \
+ KHASH_INIT(name, khint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing integer keys
+ @param name Name of the hash table [symbol]
+ @param khval_t Type of values [type]
+ */
+#define KHASH_MAP_INIT_INT(name, khval_t) \
+ KHASH_INIT(name, khint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing 64-bit integer keys
+ @param name Name of the hash table [symbol]
+ */
+#define KHASH_SET_INIT_INT64(name) \
+ KHASH_INIT(name, khint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing 64-bit integer keys
+ @param name Name of the hash table [symbol]
+ @param khval_t Type of values [type]
+ */
+#define KHASH_MAP_INIT_INT64(name, khval_t) \
+ KHASH_INIT(name, khint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal)
+
+typedef const char *kh_cstr_t;
+/*! @function
+ @abstract Instantiate a hash map containing const char* keys
+ @param name Name of the hash table [symbol]
+ */
+#define KHASH_SET_INIT_STR(name) \
+ KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal)
+
+/*! @function
+ @abstract Instantiate a hash map containing const char* keys
+ @param name Name of the hash table [symbol]
+ @param khval_t Type of values [type]
+ */
+#define KHASH_MAP_INIT_STR(name, khval_t) \
+ KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
+
+#endif /* __AC_KHASH_H */
diff --git a/external/uthash/uthash.h b/external/uthash/uthash.h
deleted file mode 100644
index 7205c67e..00000000
--- a/external/uthash/uthash.h
+++ /dev/null
@@ -1,958 +0,0 @@
-/*
-Copyright (c) 2003-2014, Troy D. Hanson http://troydhanson.github.com/uthash/
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
-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 UTHASH_H
-#define UTHASH_H
-
-#include <string.h> /* memcmp,strlen */
-#include <stddef.h> /* ptrdiff_t */
-#include <stdlib.h> /* exit() */
-
-/* These macros use decltype or the earlier __typeof GNU extension.
- As decltype is only available in newer compilers (VS2010 or gcc 4.3+
- when compiling c++ source) this code uses whatever method is needed
- or, for VS2008 where neither is available, uses casting workarounds. */
-#if defined(_MSC_VER) /* MS compiler */
-#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */
-#define DECLTYPE(x) (decltype(x))
-#else /* VS2008 or older (or VS2010 in C mode) */
-#define NO_DECLTYPE
-#define DECLTYPE(x)
-#endif
-#elif defined(__BORLANDC__) || defined(__LCC__) || defined(__WATCOMC__)
-#define NO_DECLTYPE
-#define DECLTYPE(x)
-#else /* GNU, Sun and other compilers */
-#define DECLTYPE(x) (__typeof(x))
-#endif
-
-#ifdef NO_DECLTYPE
-#define DECLTYPE_ASSIGN(dst,src) \
-do { \
- char **_da_dst = (char**)(&(dst)); \
- *_da_dst = (char*)(src); \
-} while(0)
-#else
-#define DECLTYPE_ASSIGN(dst,src) \
-do { \
- (dst) = DECLTYPE(dst)(src); \
-} while(0)
-#endif
-
-/* a number of the hash function use uint32_t which isn't defined on Pre VS2010 */
-#if defined (_WIN32)
-#if defined(_MSC_VER) && _MSC_VER >= 1600
-#include <stdint.h>
-#elif defined(__WATCOMC__)
-#include <stdint.h>
-#else
-typedef unsigned int uint32_t;
-typedef unsigned char uint8_t;
-#endif
-#else
-#include <stdint.h>
-#endif
-
-#define UTHASH_VERSION 1.9.9
-
-#ifndef uthash_fatal
-#define uthash_fatal(msg) exit(-1) /* fatal error (out of memory,etc) */
-#endif
-#ifndef uthash_malloc
-#define uthash_malloc(sz) malloc(sz) /* malloc fcn */
-#endif
-#ifndef uthash_free
-#define uthash_free(ptr,sz) free(ptr) /* free fcn */
-#endif
-
-#ifndef uthash_noexpand_fyi
-#define uthash_noexpand_fyi(tbl) /* can be defined to log noexpand */
-#endif
-#ifndef uthash_expand_fyi
-#define uthash_expand_fyi(tbl) /* can be defined to log expands */
-#endif
-
-/* initial number of buckets */
-#define HASH_INITIAL_NUM_BUCKETS 32 /* initial number of buckets */
-#define HASH_INITIAL_NUM_BUCKETS_LOG2 5 /* lg2 of initial number of buckets */
-#define HASH_BKT_CAPACITY_THRESH 10 /* expand when bucket count reaches */
-
-/* calculate the element whose hash handle address is hhe */
-#define ELMT_FROM_HH(tbl,hhp) ((void*)(((char*)(hhp)) - ((tbl)->hho)))
-
-#define HASH_FIND(hh,head,keyptr,keylen,out) \
-do { \
- unsigned _hf_bkt,_hf_hashv; \
- out=NULL; \
- if (head) { \
- HASH_FCN(keyptr,keylen, (head)->hh.tbl->num_buckets, _hf_hashv, _hf_bkt); \
- if (HASH_BLOOM_TEST((head)->hh.tbl, _hf_hashv)) { \
- HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[ _hf_bkt ], \
- keyptr,keylen,out); \
- } \
- } \
-} while (0)
-
-#ifdef HASH_BLOOM
-#define HASH_BLOOM_BITLEN (1ULL << HASH_BLOOM)
-#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN/8) + ((HASH_BLOOM_BITLEN%8) ? 1:0)
-#define HASH_BLOOM_MAKE(tbl) \
-do { \
- (tbl)->bloom_nbits = HASH_BLOOM; \
- (tbl)->bloom_bv = (uint8_t*)uthash_malloc(HASH_BLOOM_BYTELEN); \
- if (!((tbl)->bloom_bv)) { uthash_fatal( "out of memory"); } \
- memset((tbl)->bloom_bv, 0, HASH_BLOOM_BYTELEN); \
- (tbl)->bloom_sig = HASH_BLOOM_SIGNATURE; \
-} while (0)
-
-#define HASH_BLOOM_FREE(tbl) \
-do { \
- uthash_free((tbl)->bloom_bv, HASH_BLOOM_BYTELEN); \
-} while (0)
-
-#define HASH_BLOOM_BITSET(bv,idx) (bv[(idx)/8] |= (1U << ((idx)%8)))
-#define HASH_BLOOM_BITTEST(bv,idx) (bv[(idx)/8] & (1U << ((idx)%8)))
-
-#define HASH_BLOOM_ADD(tbl,hashv) \
- HASH_BLOOM_BITSET((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))
-
-#define HASH_BLOOM_TEST(tbl,hashv) \
- HASH_BLOOM_BITTEST((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))
-
-#else
-#define HASH_BLOOM_MAKE(tbl)
-#define HASH_BLOOM_FREE(tbl)
-#define HASH_BLOOM_ADD(tbl,hashv)
-#define HASH_BLOOM_TEST(tbl,hashv) (1)
-#define HASH_BLOOM_BYTELEN 0
-#endif
-
-#define HASH_MAKE_TABLE(hh,head) \
-do { \
- (head)->hh.tbl = (UT_hash_table*)uthash_malloc( \
- sizeof(UT_hash_table)); \
- if (!((head)->hh.tbl)) { uthash_fatal( "out of memory"); } \
- memset((head)->hh.tbl, 0, sizeof(UT_hash_table)); \
- (head)->hh.tbl->tail = &((head)->hh); \
- (head)->hh.tbl->num_buckets = HASH_INITIAL_NUM_BUCKETS; \
- (head)->hh.tbl->log2_num_buckets = HASH_INITIAL_NUM_BUCKETS_LOG2; \
- (head)->hh.tbl->hho = (char*)(&(head)->hh) - (char*)(head); \
- (head)->hh.tbl->buckets = (UT_hash_bucket*)uthash_malloc( \
- HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket)); \
- if (! (head)->hh.tbl->buckets) { uthash_fatal( "out of memory"); } \
- memset((head)->hh.tbl->buckets, 0, \
- HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket)); \
- HASH_BLOOM_MAKE((head)->hh.tbl); \
- (head)->hh.tbl->signature = HASH_SIGNATURE; \
-} while(0)
-
-#define HASH_ADD(hh,head,fieldname,keylen_in,add) \
- HASH_ADD_KEYPTR(hh,head,&((add)->fieldname),keylen_in,add)
-
-#define HASH_REPLACE(hh,head,fieldname,keylen_in,add,replaced) \
-do { \
- replaced=NULL; \
- HASH_FIND(hh,head,&((add)->fieldname),keylen_in,replaced); \
- if (replaced!=NULL) { \
- HASH_DELETE(hh,head,replaced); \
- }; \
- HASH_ADD(hh,head,fieldname,keylen_in,add); \
-} while(0)
-
-#define HASH_ADD_KEYPTR(hh,head,keyptr,keylen_in,add) \
-do { \
- unsigned _ha_bkt; \
- (add)->hh.next = NULL; \
- (add)->hh.key = (char*)(keyptr); \
- (add)->hh.keylen = (unsigned)(keylen_in); \
- if (!(head)) { \
- head = (add); \
- (head)->hh.prev = NULL; \
- HASH_MAKE_TABLE(hh,head); \
- } else { \
- (head)->hh.tbl->tail->next = (add); \
- (add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail); \
- (head)->hh.tbl->tail = &((add)->hh); \
- } \
- (head)->hh.tbl->num_items++; \
- (add)->hh.tbl = (head)->hh.tbl; \
- HASH_FCN(keyptr,keylen_in, (head)->hh.tbl->num_buckets, \
- (add)->hh.hashv, _ha_bkt); \
- HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt],&(add)->hh); \
- HASH_BLOOM_ADD((head)->hh.tbl,(add)->hh.hashv); \
- HASH_EMIT_KEY(hh,head,keyptr,keylen_in); \
- HASH_FSCK(hh,head); \
-} while(0)
-
-#define HASH_TO_BKT( hashv, num_bkts, bkt ) \
-do { \
- bkt = ((hashv) & ((num_bkts) - 1)); \
-} while(0)
-
-/* delete "delptr" from the hash table.
- * "the usual" patch-up process for the app-order doubly-linked-list.
- * The use of _hd_hh_del below deserves special explanation.
- * These used to be expressed using (delptr) but that led to a bug
- * if someone used the same symbol for the head and deletee, like
- * HASH_DELETE(hh,users,users);
- * We want that to work, but by changing the head (users) below
- * we were forfeiting our ability to further refer to the deletee (users)
- * in the patch-up process. Solution: use scratch space to
- * copy the deletee pointer, then the latter references are via that
- * scratch pointer rather than through the repointed (users) symbol.
- */
-#define HASH_DELETE(hh,head,delptr) \
-do { \
- unsigned _hd_bkt; \
- struct UT_hash_handle *_hd_hh_del; \
- if ( ((delptr)->hh.prev == NULL) && ((delptr)->hh.next == NULL) ) { \
- uthash_free((head)->hh.tbl->buckets, \
- (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \
- HASH_BLOOM_FREE((head)->hh.tbl); \
- uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
- head = NULL; \
- } else { \
- _hd_hh_del = &((delptr)->hh); \
- if ((delptr) == ELMT_FROM_HH((head)->hh.tbl,(head)->hh.tbl->tail)) { \
- (head)->hh.tbl->tail = \
- (UT_hash_handle*)((ptrdiff_t)((delptr)->hh.prev) + \
- (head)->hh.tbl->hho); \
- } \
- if ((delptr)->hh.prev) { \
- ((UT_hash_handle*)((ptrdiff_t)((delptr)->hh.prev) + \
- (head)->hh.tbl->hho))->next = (delptr)->hh.next; \
- } else { \
- DECLTYPE_ASSIGN(head,(delptr)->hh.next); \
- } \
- if (_hd_hh_del->next) { \
- ((UT_hash_handle*)((ptrdiff_t)_hd_hh_del->next + \
- (head)->hh.tbl->hho))->prev = \
- _hd_hh_del->prev; \
- } \
- HASH_TO_BKT( _hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt); \
- HASH_DEL_IN_BKT(hh,(head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del); \
- (head)->hh.tbl->num_items--; \
- } \
- HASH_FSCK(hh,head); \
-} while (0)
-
-
-/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */
-#define HASH_FIND_STR(head,findstr,out) \
- HASH_FIND(hh,head,findstr,strlen(findstr),out)
-#define HASH_ADD_STR(head,strfield,add) \
- HASH_ADD(hh,head,strfield[0],strlen(add->strfield),add)
-#define HASH_REPLACE_STR(head,strfield,add,replaced) \
- HASH_REPLACE(hh,head,strfield[0],strlen(add->strfield),add,replaced)
-#define HASH_FIND_INT(head,findint,out) \
- HASH_FIND(hh,head,findint,sizeof(int),out)
-#define HASH_ADD_INT(head,intfield,add) \
- HASH_ADD(hh,head,intfield,sizeof(int),add)
-#define HASH_REPLACE_INT(head,intfield,add,replaced) \
- HASH_REPLACE(hh,head,intfield,sizeof(int),add,replaced)
-#define HASH_FIND_PTR(head,findptr,out) \
- HASH_FIND(hh,head,findptr,sizeof(void *),out)
-#define HASH_ADD_PTR(head,ptrfield,add) \
- HASH_ADD(hh,head,ptrfield,sizeof(void *),add)
-#define HASH_REPLACE_PTR(head,ptrfield,add,replaced) \
- HASH_REPLACE(hh,head,ptrfield,sizeof(void *),add,replaced)
-#define HASH_DEL(head,delptr) \
- HASH_DELETE(hh,head,delptr)
-
-/* HASH_FSCK checks hash integrity on every add/delete when HASH_DEBUG is defined.
- * This is for uthash developer only; it compiles away if HASH_DEBUG isn't defined.
- */
-#ifdef HASH_DEBUG
-#define HASH_OOPS(...) do { fprintf(stderr,__VA_ARGS__); exit(-1); } while (0)
-#define HASH_FSCK(hh,head) \
-do { \
- unsigned _bkt_i; \
- unsigned _count, _bkt_count; \
- char *_prev; \
- struct UT_hash_handle *_thh; \
- if (head) { \
- _count = 0; \
- for( _bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; _bkt_i++) { \
- _bkt_count = 0; \
- _thh = (head)->hh.tbl->buckets[_bkt_i].hh_head; \
- _prev = NULL; \
- while (_thh) { \
- if (_prev != (char*)(_thh->hh_prev)) { \
- HASH_OOPS("invalid hh_prev %p, actual %p\n", \
- _thh->hh_prev, _prev ); \
- } \
- _bkt_count++; \
- _prev = (char*)(_thh); \
- _thh = _thh->hh_next; \
- } \
- _count += _bkt_count; \
- if ((head)->hh.tbl->buckets[_bkt_i].count != _bkt_count) { \
- HASH_OOPS("invalid bucket count %d, actual %d\n", \
- (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count); \
- } \
- } \
- if (_count != (head)->hh.tbl->num_items) { \
- HASH_OOPS("invalid hh item count %d, actual %d\n", \
- (head)->hh.tbl->num_items, _count ); \
- } \
- /* traverse hh in app order; check next/prev integrity, count */ \
- _count = 0; \
- _prev = NULL; \
- _thh = &(head)->hh; \
- while (_thh) { \
- _count++; \
- if (_prev !=(char*)(_thh->prev)) { \
- HASH_OOPS("invalid prev %p, actual %p\n", \
- _thh->prev, _prev ); \
- } \
- _prev = (char*)ELMT_FROM_HH((head)->hh.tbl, _thh); \
- _thh = ( _thh->next ? (UT_hash_handle*)((char*)(_thh->next) + \
- (head)->hh.tbl->hho) : NULL ); \
- } \
- if (_count != (head)->hh.tbl->num_items) { \
- HASH_OOPS("invalid app item count %d, actual %d\n", \
- (head)->hh.tbl->num_items, _count ); \
- } \
- } \
-} while (0)
-#else
-#define HASH_FSCK(hh,head)
-#endif
-
-/* When compiled with -DHASH_EMIT_KEYS, length-prefixed keys are emitted to
- * the descriptor to which this macro is defined for tuning the hash function.
- * The app can #include <unistd.h> to get the prototype for write(2). */
-#ifdef HASH_EMIT_KEYS
-#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen) \
-do { \
- unsigned _klen = fieldlen; \
- write(HASH_EMIT_KEYS, &_klen, sizeof(_klen)); \
- write(HASH_EMIT_KEYS, keyptr, fieldlen); \
-} while (0)
-#else
-#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)
-#endif
-
-/* default to Jenkin's hash unless overridden e.g. DHASH_FUNCTION=HASH_SAX */
-#ifdef HASH_FUNCTION
-#define HASH_FCN HASH_FUNCTION
-#else
-#define HASH_FCN HASH_JEN
-#endif
-
-/* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */
-#define HASH_BER(key,keylen,num_bkts,hashv,bkt) \
-do { \
- unsigned _hb_keylen=keylen; \
- char *_hb_key=(char*)(key); \
- (hashv) = 0; \
- while (_hb_keylen--) { (hashv) = (((hashv) << 5) + (hashv)) + *_hb_key++; } \
- bkt = (hashv) & (num_bkts-1); \
-} while (0)
-
-
-/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at
- * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */
-#define HASH_SAX(key,keylen,num_bkts,hashv,bkt) \
-do { \
- unsigned _sx_i; \
- char *_hs_key=(char*)(key); \
- hashv = 0; \
- for(_sx_i=0; _sx_i < keylen; _sx_i++) \
- hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i]; \
- bkt = hashv & (num_bkts-1); \
-} while (0)
-/* FNV-1a variation */
-#define HASH_FNV(key,keylen,num_bkts,hashv,bkt) \
-do { \
- unsigned _fn_i; \
- char *_hf_key=(char*)(key); \
- hashv = 2166136261UL; \
- for(_fn_i=0; _fn_i < keylen; _fn_i++) \
- hashv = hashv ^ _hf_key[_fn_i]; \
- hashv = hashv * 16777619; \
- bkt = hashv & (num_bkts-1); \
-} while(0)
-
-#define HASH_OAT(key,keylen,num_bkts,hashv,bkt) \
-do { \
- unsigned _ho_i; \
- char *_ho_key=(char*)(key); \
- hashv = 0; \
- for(_ho_i=0; _ho_i < keylen; _ho_i++) { \
- hashv += _ho_key[_ho_i]; \
- hashv += (hashv << 10); \
- hashv ^= (hashv >> 6); \
- } \
- hashv += (hashv << 3); \
- hashv ^= (hashv >> 11); \
- hashv += (hashv << 15); \
- bkt = hashv & (num_bkts-1); \
-} while(0)
-
-#define HASH_JEN_MIX(a,b,c) \
-do { \
- a -= b; a -= c; a ^= ( c >> 13 ); \
- b -= c; b -= a; b ^= ( a << 8 ); \
- c -= a; c -= b; c ^= ( b >> 13 ); \
- a -= b; a -= c; a ^= ( c >> 12 ); \
- b -= c; b -= a; b ^= ( a << 16 ); \
- c -= a; c -= b; c ^= ( b >> 5 ); \
- a -= b; a -= c; a ^= ( c >> 3 ); \
- b -= c; b -= a; b ^= ( a << 10 ); \
- c -= a; c -= b; c ^= ( b >> 15 ); \
-} while (0)
-
-#define HASH_JEN(key,keylen,num_bkts,hashv,bkt) \
-do { \
- unsigned _hj_i,_hj_j,_hj_k; \
- unsigned char *_hj_key=(unsigned char*)(key); \
- hashv = 0xfeedbeef; \
- _hj_i = _hj_j = 0x9e3779b9; \
- _hj_k = (unsigned)(keylen); \
- while (_hj_k >= 12) { \
- _hj_i += (_hj_key[0] + ( (unsigned)_hj_key[1] << 8 ) \
- + ( (unsigned)_hj_key[2] << 16 ) \
- + ( (unsigned)_hj_key[3] << 24 ) ); \
- _hj_j += (_hj_key[4] + ( (unsigned)_hj_key[5] << 8 ) \
- + ( (unsigned)_hj_key[6] << 16 ) \
- + ( (unsigned)_hj_key[7] << 24 ) ); \
- hashv += (_hj_key[8] + ( (unsigned)_hj_key[9] << 8 ) \
- + ( (unsigned)_hj_key[10] << 16 ) \
- + ( (unsigned)_hj_key[11] << 24 ) ); \
- \
- HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
- \
- _hj_key += 12; \
- _hj_k -= 12; \
- } \
- hashv += keylen; \
- switch ( _hj_k ) { \
- case 11: hashv += ( (unsigned)_hj_key[10] << 24 ); \
- case 10: hashv += ( (unsigned)_hj_key[9] << 16 ); \
- case 9: hashv += ( (unsigned)_hj_key[8] << 8 ); \
- case 8: _hj_j += ( (unsigned)_hj_key[7] << 24 ); \
- case 7: _hj_j += ( (unsigned)_hj_key[6] << 16 ); \
- case 6: _hj_j += ( (unsigned)_hj_key[5] << 8 ); \
- case 5: _hj_j += _hj_key[4]; \
- case 4: _hj_i += ( (unsigned)_hj_key[3] << 24 ); \
- case 3: _hj_i += ( (unsigned)_hj_key[2] << 16 ); \
- case 2: _hj_i += ( (unsigned)_hj_key[1] << 8 ); \
- case 1: _hj_i += _hj_key[0]; \
- } \
- HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
- bkt = hashv & (num_bkts-1); \
-} while(0)
-
-/* The Paul Hsieh hash function */
-#undef get16bits
-#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \
- || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__)
-#define get16bits(d) (*((const uint16_t *) (d)))
-#endif
-
-#if !defined (get16bits)
-#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8) \
- +(uint32_t)(((const uint8_t *)(d))[0]) )
-#endif
-#define HASH_SFH(key,keylen,num_bkts,hashv,bkt) \
-do { \
- unsigned char *_sfh_key=(unsigned char*)(key); \
- uint32_t _sfh_tmp, _sfh_len = keylen; \
- \
- int _sfh_rem = _sfh_len & 3; \
- _sfh_len >>= 2; \
- hashv = 0xcafebabe; \
- \
- /* Main loop */ \
- for (;_sfh_len > 0; _sfh_len--) { \
- hashv += get16bits (_sfh_key); \
- _sfh_tmp = (uint32_t)(get16bits (_sfh_key+2)) << 11 ^ hashv; \
- hashv = (hashv << 16) ^ _sfh_tmp; \
- _sfh_key += 2*sizeof (uint16_t); \
- hashv += hashv >> 11; \
- } \
- \
- /* Handle end cases */ \
- switch (_sfh_rem) { \
- case 3: hashv += get16bits (_sfh_key); \
- hashv ^= hashv << 16; \
- hashv ^= (uint32_t)(_sfh_key[sizeof (uint16_t)] << 18); \
- hashv += hashv >> 11; \
- break; \
- case 2: hashv += get16bits (_sfh_key); \
- hashv ^= hashv << 11; \
- hashv += hashv >> 17; \
- break; \
- case 1: hashv += *_sfh_key; \
- hashv ^= hashv << 10; \
- hashv += hashv >> 1; \
- } \
- \
- /* Force "avalanching" of final 127 bits */ \
- hashv ^= hashv << 3; \
- hashv += hashv >> 5; \
- hashv ^= hashv << 4; \
- hashv += hashv >> 17; \
- hashv ^= hashv << 25; \
- hashv += hashv >> 6; \
- bkt = hashv & (num_bkts-1); \
-} while(0)
-
-#ifdef HASH_USING_NO_STRICT_ALIASING
-/* The MurmurHash exploits some CPU's (x86,x86_64) tolerance for unaligned reads.
- * For other types of CPU's (e.g. Sparc) an unaligned read causes a bus error.
- * MurmurHash uses the faster approach only on CPU's where we know it's safe.
- *
- * Note the preprocessor built-in defines can be emitted using:
- *
- * gcc -m64 -dM -E - < /dev/null (on gcc)
- * cc -## a.c (where a.c is a simple test file) (Sun Studio)
- */
-#if (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86))
-#define MUR_GETBLOCK(p,i) p[i]
-#else /* non intel */
-#define MUR_PLUS0_ALIGNED(p) (((unsigned long)p & 0x3) == 0)
-#define MUR_PLUS1_ALIGNED(p) (((unsigned long)p & 0x3) == 1)
-#define MUR_PLUS2_ALIGNED(p) (((unsigned long)p & 0x3) == 2)
-#define MUR_PLUS3_ALIGNED(p) (((unsigned long)p & 0x3) == 3)
-#define WP(p) ((uint32_t*)((unsigned long)(p) & ~3UL))
-#if (defined(__BIG_ENDIAN__) || defined(SPARC) || defined(__ppc__) || defined(__ppc64__))
-#define MUR_THREE_ONE(p) ((((*WP(p))&0x00ffffff) << 8) | (((*(WP(p)+1))&0xff000000) >> 24))
-#define MUR_TWO_TWO(p) ((((*WP(p))&0x0000ffff) <<16) | (((*(WP(p)+1))&0xffff0000) >> 16))
-#define MUR_ONE_THREE(p) ((((*WP(p))&0x000000ff) <<24) | (((*(WP(p)+1))&0xffffff00) >> 8))
-#else /* assume little endian non-intel */
-#define MUR_THREE_ONE(p) ((((*WP(p))&0xffffff00) >> 8) | (((*(WP(p)+1))&0x000000ff) << 24))
-#define MUR_TWO_TWO(p) ((((*WP(p))&0xffff0000) >>16) | (((*(WP(p)+1))&0x0000ffff) << 16))
-#define MUR_ONE_THREE(p) ((((*WP(p))&0xff000000) >>24) | (((*(WP(p)+1))&0x00ffffff) << 8))
-#endif
-#define MUR_GETBLOCK(p,i) (MUR_PLUS0_ALIGNED(p) ? ((p)[i]) : \
- (MUR_PLUS1_ALIGNED(p) ? MUR_THREE_ONE(p) : \
- (MUR_PLUS2_ALIGNED(p) ? MUR_TWO_TWO(p) : \
- MUR_ONE_THREE(p))))
-#endif
-#define MUR_ROTL32(x,r) (((x) << (r)) | ((x) >> (32 - (r))))
-#define MUR_FMIX(_h) \
-do { \
- _h ^= _h >> 16; \
- _h *= 0x85ebca6b; \
- _h ^= _h >> 13; \
- _h *= 0xc2b2ae35l; \
- _h ^= _h >> 16; \
-} while(0)
-
-#define HASH_MUR(key,keylen,num_bkts,hashv,bkt) \
-do { \
- const uint8_t *_mur_data = (const uint8_t*)(key); \
- const int _mur_nblocks = (keylen) / 4; \
- uint32_t _mur_h1 = 0xf88D5353; \
- uint32_t _mur_c1 = 0xcc9e2d51; \
- uint32_t _mur_c2 = 0x1b873593; \
- uint32_t _mur_k1 = 0; \
- const uint8_t *_mur_tail; \
- const uint32_t *_mur_blocks = (const uint32_t*)(_mur_data+_mur_nblocks*4); \
- int _mur_i; \
- for(_mur_i = -_mur_nblocks; _mur_i; _mur_i++) { \
- _mur_k1 = MUR_GETBLOCK(_mur_blocks,_mur_i); \
- _mur_k1 *= _mur_c1; \
- _mur_k1 = MUR_ROTL32(_mur_k1,15); \
- _mur_k1 *= _mur_c2; \
- \
- _mur_h1 ^= _mur_k1; \
- _mur_h1 = MUR_ROTL32(_mur_h1,13); \
- _mur_h1 = _mur_h1*5+0xe6546b64; \
- } \
- _mur_tail = (const uint8_t*)(_mur_data + _mur_nblocks*4); \
- _mur_k1=0; \
- switch((keylen) & 3) { \
- case 3: _mur_k1 ^= _mur_tail[2] << 16; \
- case 2: _mur_k1 ^= _mur_tail[1] << 8; \
- case 1: _mur_k1 ^= _mur_tail[0]; \
- _mur_k1 *= _mur_c1; \
- _mur_k1 = MUR_ROTL32(_mur_k1,15); \
- _mur_k1 *= _mur_c2; \
- _mur_h1 ^= _mur_k1; \
- } \
- _mur_h1 ^= (keylen); \
- MUR_FMIX(_mur_h1); \
- hashv = _mur_h1; \
- bkt = hashv & (num_bkts-1); \
-} while(0)
-#endif /* HASH_USING_NO_STRICT_ALIASING */
-
-/* key comparison function; return 0 if keys equal */
-#define HASH_KEYCMP(a,b,len) memcmp(a,b,len)
-
-/* iterate over items in a known bucket to find desired item */
-#define HASH_FIND_IN_BKT(tbl,hh,head,keyptr,keylen_in,out) \
-do { \
- if (head.hh_head) DECLTYPE_ASSIGN(out,ELMT_FROM_HH(tbl,head.hh_head)); \
- else out=NULL; \
- while (out) { \
- if ((out)->hh.keylen == keylen_in) { \
- if ((HASH_KEYCMP((out)->hh.key,keyptr,keylen_in)) == 0) break; \
- } \
- if ((out)->hh.hh_next) DECLTYPE_ASSIGN(out,ELMT_FROM_HH(tbl,(out)->hh.hh_next)); \
- else out = NULL; \
- } \
-} while(0)
-
-/* add an item to a bucket */
-#define HASH_ADD_TO_BKT(head,addhh) \
-do { \
- head.count++; \
- (addhh)->hh_next = head.hh_head; \
- (addhh)->hh_prev = NULL; \
- if (head.hh_head) { (head).hh_head->hh_prev = (addhh); } \
- (head).hh_head=addhh; \
- if (head.count >= ((head.expand_mult+1) * HASH_BKT_CAPACITY_THRESH) \
- && (addhh)->tbl->noexpand != 1) { \
- HASH_EXPAND_BUCKETS((addhh)->tbl); \
- } \
-} while(0)
-
-/* remove an item from a given bucket */
-#define HASH_DEL_IN_BKT(hh,head,hh_del) \
- (head).count--; \
- if ((head).hh_head == hh_del) { \
- (head).hh_head = hh_del->hh_next; \
- } \
- if (hh_del->hh_prev) { \
- hh_del->hh_prev->hh_next = hh_del->hh_next; \
- } \
- if (hh_del->hh_next) { \
- hh_del->hh_next->hh_prev = hh_del->hh_prev; \
- }
-
-/* Bucket expansion has the effect of doubling the number of buckets
- * and redistributing the items into the new buckets. Ideally the
- * items will distribute more or less evenly into the new buckets
- * (the extent to which this is true is a measure of the quality of
- * the hash function as it applies to the key domain).
- *
- * With the items distributed into more buckets, the chain length
- * (item count) in each bucket is reduced. Thus by expanding buckets
- * the hash keeps a bound on the chain length. This bounded chain
- * length is the essence of how a hash provides constant time lookup.
- *
- * The calculation of tbl->ideal_chain_maxlen below deserves some
- * explanation. First, keep in mind that we're calculating the ideal
- * maximum chain length based on the *new* (doubled) bucket count.
- * In fractions this is just n/b (n=number of items,b=new num buckets).
- * Since the ideal chain length is an integer, we want to calculate
- * ceil(n/b). We don't depend on floating point arithmetic in this
- * hash, so to calculate ceil(n/b) with integers we could write
- *
- * ceil(n/b) = (n/b) + ((n%b)?1:0)
- *
- * and in fact a previous version of this hash did just that.
- * But now we have improved things a bit by recognizing that b is
- * always a power of two. We keep its base 2 log handy (call it lb),
- * so now we can write this with a bit shift and logical AND:
- *
- * ceil(n/b) = (n>>lb) + ( (n & (b-1)) ? 1:0)
- *
- */
-#define HASH_EXPAND_BUCKETS(tbl) \
-do { \
- unsigned _he_bkt; \
- unsigned _he_bkt_i; \
- struct UT_hash_handle *_he_thh, *_he_hh_nxt; \
- UT_hash_bucket *_he_new_buckets, *_he_newbkt; \
- _he_new_buckets = (UT_hash_bucket*)uthash_malloc( \
- 2 * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
- if (!_he_new_buckets) { uthash_fatal( "out of memory"); } \
- memset(_he_new_buckets, 0, \
- 2 * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
- tbl->ideal_chain_maxlen = \
- (tbl->num_items >> (tbl->log2_num_buckets+1)) + \
- ((tbl->num_items & ((tbl->num_buckets*2)-1)) ? 1 : 0); \
- tbl->nonideal_items = 0; \
- for(_he_bkt_i = 0; _he_bkt_i < tbl->num_buckets; _he_bkt_i++) \
- { \
- _he_thh = tbl->buckets[ _he_bkt_i ].hh_head; \
- while (_he_thh) { \
- _he_hh_nxt = _he_thh->hh_next; \
- HASH_TO_BKT( _he_thh->hashv, tbl->num_buckets*2, _he_bkt); \
- _he_newbkt = &(_he_new_buckets[ _he_bkt ]); \
- if (++(_he_newbkt->count) > tbl->ideal_chain_maxlen) { \
- tbl->nonideal_items++; \
- _he_newbkt->expand_mult = _he_newbkt->count / \
- tbl->ideal_chain_maxlen; \
- } \
- _he_thh->hh_prev = NULL; \
- _he_thh->hh_next = _he_newbkt->hh_head; \
- if (_he_newbkt->hh_head) _he_newbkt->hh_head->hh_prev = \
- _he_thh; \
- _he_newbkt->hh_head = _he_thh; \
- _he_thh = _he_hh_nxt; \
- } \
- } \
- uthash_free( tbl->buckets, tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \
- tbl->num_buckets *= 2; \
- tbl->log2_num_buckets++; \
- tbl->buckets = _he_new_buckets; \
- tbl->ineff_expands = (tbl->nonideal_items > (tbl->num_items >> 1)) ? \
- (tbl->ineff_expands+1) : 0; \
- if (tbl->ineff_expands > 1) { \
- tbl->noexpand=1; \
- uthash_noexpand_fyi(tbl); \
- } \
- uthash_expand_fyi(tbl); \
-} while(0)
-
-
-/* This is an adaptation of Simon Tatham's O(n log(n)) mergesort */
-/* Note that HASH_SORT assumes the hash handle name to be hh.
- * HASH_SRT was added to allow the hash handle name to be passed in. */
-#define HASH_SORT(head,cmpfcn) HASH_SRT(hh,head,cmpfcn)
-#define HASH_SRT(hh,head,cmpfcn) \
-do { \
- unsigned _hs_i; \
- unsigned _hs_looping,_hs_nmerges,_hs_insize,_hs_psize,_hs_qsize; \
- struct UT_hash_handle *_hs_p, *_hs_q, *_hs_e, *_hs_list, *_hs_tail; \
- if (head) { \
- _hs_insize = 1; \
- _hs_looping = 1; \
- _hs_list = &((head)->hh); \
- while (_hs_looping) { \
- _hs_p = _hs_list; \
- _hs_list = NULL; \
- _hs_tail = NULL; \
- _hs_nmerges = 0; \
- while (_hs_p) { \
- _hs_nmerges++; \
- _hs_q = _hs_p; \
- _hs_psize = 0; \
- for ( _hs_i = 0; _hs_i < _hs_insize; _hs_i++ ) { \
- _hs_psize++; \
- _hs_q = (UT_hash_handle*)((_hs_q->next) ? \
- ((void*)((char*)(_hs_q->next) + \
- (head)->hh.tbl->hho)) : NULL); \
- if (! (_hs_q) ) break; \
- } \
- _hs_qsize = _hs_insize; \
- while ((_hs_psize > 0) || ((_hs_qsize > 0) && _hs_q )) { \
- if (_hs_psize == 0) { \
- _hs_e = _hs_q; \
- _hs_q = (UT_hash_handle*)((_hs_q->next) ? \
- ((void*)((char*)(_hs_q->next) + \
- (head)->hh.tbl->hho)) : NULL); \
- _hs_qsize--; \
- } else if ( (_hs_qsize == 0) || !(_hs_q) ) { \
- _hs_e = _hs_p; \
- if (_hs_p){ \
- _hs_p = (UT_hash_handle*)((_hs_p->next) ? \
- ((void*)((char*)(_hs_p->next) + \
- (head)->hh.tbl->hho)) : NULL); \
- } \
- _hs_psize--; \
- } else if (( \
- cmpfcn(DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl,_hs_p)), \
- DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl,_hs_q))) \
- ) <= 0) { \
- _hs_e = _hs_p; \
- if (_hs_p){ \
- _hs_p = (UT_hash_handle*)((_hs_p->next) ? \
- ((void*)((char*)(_hs_p->next) + \
- (head)->hh.tbl->hho)) : NULL); \
- } \
- _hs_psize--; \
- } else { \
- _hs_e = _hs_q; \
- _hs_q = (UT_hash_handle*)((_hs_q->next) ? \
- ((void*)((char*)(_hs_q->next) + \
- (head)->hh.tbl->hho)) : NULL); \
- _hs_qsize--; \
- } \
- if ( _hs_tail ) { \
- _hs_tail->next = ((_hs_e) ? \
- ELMT_FROM_HH((head)->hh.tbl,_hs_e) : NULL); \
- } else { \
- _hs_list = _hs_e; \
- } \
- if (_hs_e) { \
- _hs_e->prev = ((_hs_tail) ? \
- ELMT_FROM_HH((head)->hh.tbl,_hs_tail) : NULL); \
- } \
- _hs_tail = _hs_e; \
- } \
- _hs_p = _hs_q; \
- } \
- if (_hs_tail){ \
- _hs_tail->next = NULL; \
- } \
- if ( _hs_nmerges <= 1 ) { \
- _hs_looping=0; \
- (head)->hh.tbl->tail = _hs_tail; \
- DECLTYPE_ASSIGN(head,ELMT_FROM_HH((head)->hh.tbl, _hs_list)); \
- } \
- _hs_insize *= 2; \
- } \
- HASH_FSCK(hh,head); \
- } \
-} while (0)
-
-/* This function selects items from one hash into another hash.
- * The end result is that the selected items have dual presence
- * in both hashes. There is no copy of the items made; rather
- * they are added into the new hash through a secondary hash
- * hash handle that must be present in the structure. */
-#define HASH_SELECT(hh_dst, dst, hh_src, src, cond) \
-do { \
- unsigned _src_bkt, _dst_bkt; \
- void *_last_elt=NULL, *_elt; \
- UT_hash_handle *_src_hh, *_dst_hh, *_last_elt_hh=NULL; \
- ptrdiff_t _dst_hho = ((char*)(&(dst)->hh_dst) - (char*)(dst)); \
- if (src) { \
- for(_src_bkt=0; _src_bkt < (src)->hh_src.tbl->num_buckets; _src_bkt++) { \
- for(_src_hh = (src)->hh_src.tbl->buckets[_src_bkt].hh_head; \
- _src_hh; \
- _src_hh = _src_hh->hh_next) { \
- _elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh); \
- if (cond(_elt)) { \
- _dst_hh = (UT_hash_handle*)(((char*)_elt) + _dst_hho); \
- _dst_hh->key = _src_hh->key; \
- _dst_hh->keylen = _src_hh->keylen; \
- _dst_hh->hashv = _src_hh->hashv; \
- _dst_hh->prev = _last_elt; \
- _dst_hh->next = NULL; \
- if (_last_elt_hh) { _last_elt_hh->next = _elt; } \
- if (!dst) { \
- DECLTYPE_ASSIGN(dst,_elt); \
- HASH_MAKE_TABLE(hh_dst,dst); \
- } else { \
- _dst_hh->tbl = (dst)->hh_dst.tbl; \
- } \
- HASH_TO_BKT(_dst_hh->hashv, _dst_hh->tbl->num_buckets, _dst_bkt); \
- HASH_ADD_TO_BKT(_dst_hh->tbl->buckets[_dst_bkt],_dst_hh); \
- (dst)->hh_dst.tbl->num_items++; \
- _last_elt = _elt; \
- _last_elt_hh = _dst_hh; \
- } \
- } \
- } \
- } \
- HASH_FSCK(hh_dst,dst); \
-} while (0)
-
-#define HASH_CLEAR(hh,head) \
-do { \
- if (head) { \
- uthash_free((head)->hh.tbl->buckets, \
- (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket)); \
- HASH_BLOOM_FREE((head)->hh.tbl); \
- uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
- (head)=NULL; \
- } \
-} while(0)
-
-#define HASH_OVERHEAD(hh,head) \
- (size_t)((((head)->hh.tbl->num_items * sizeof(UT_hash_handle)) + \
- ((head)->hh.tbl->num_buckets * sizeof(UT_hash_bucket)) + \
- (sizeof(UT_hash_table)) + \
- (HASH_BLOOM_BYTELEN)))
-
-#ifdef NO_DECLTYPE
-#define HASH_ITER(hh,head,el,tmp) \
-for((el)=(head), (*(char**)(&(tmp)))=(char*)((head)?(head)->hh.next:NULL); \
- el; (el)=(tmp),(*(char**)(&(tmp)))=(char*)((tmp)?(tmp)->hh.next:NULL))
-#else
-#define HASH_ITER(hh,head,el,tmp) \
-for((el)=(head),(tmp)=DECLTYPE(el)((head)?(head)->hh.next:NULL); \
- el; (el)=(tmp),(tmp)=DECLTYPE(el)((tmp)?(tmp)->hh.next:NULL))
-#endif
-
-/* obtain a count of items in the hash */
-#define HASH_COUNT(head) HASH_CNT(hh,head)
-#define HASH_CNT(hh,head) ((head)?((head)->hh.tbl->num_items):0)
-
-typedef struct UT_hash_bucket {
- struct UT_hash_handle *hh_head;
- unsigned count;
-
- /* expand_mult is normally set to 0. In this situation, the max chain length
- * threshold is enforced at its default value, HASH_BKT_CAPACITY_THRESH. (If
- * the bucket's chain exceeds this length, bucket expansion is triggered).
- * However, setting expand_mult to a non-zero value delays bucket expansion
- * (that would be triggered by additions to this particular bucket)
- * until its chain length reaches a *multiple* of HASH_BKT_CAPACITY_THRESH.
- * (The multiplier is simply expand_mult+1). The whole idea of this
- * multiplier is to reduce bucket expansions, since they are expensive, in
- * situations where we know that a particular bucket tends to be overused.
- * It is better to let its chain length grow to a longer yet-still-bounded
- * value, than to do an O(n) bucket expansion too often.
- */
- unsigned expand_mult;
-
-} UT_hash_bucket;
-
-/* random signature used only to find hash tables in external analysis */
-#define HASH_SIGNATURE 0xa0111fe1
-#define HASH_BLOOM_SIGNATURE 0xb12220f2
-
-typedef struct UT_hash_table {
- UT_hash_bucket *buckets;
- unsigned num_buckets, log2_num_buckets;
- unsigned num_items;
- struct UT_hash_handle *tail; /* tail hh in app order, for fast append */
- ptrdiff_t hho; /* hash handle offset (byte pos of hash handle in element */
-
- /* in an ideal situation (all buckets used equally), no bucket would have
- * more than ceil(#items/#buckets) items. that's the ideal chain length. */
- unsigned ideal_chain_maxlen;
-
- /* nonideal_items is the number of items in the hash whose chain position
- * exceeds the ideal chain maxlen. these items pay the penalty for an uneven
- * hash distribution; reaching them in a chain traversal takes >ideal steps */
- unsigned nonideal_items;
-
- /* ineffective expands occur when a bucket doubling was performed, but
- * afterward, more than half the items in the hash had nonideal chain
- * positions. If this happens on two consecutive expansions we inhibit any
- * further expansion, as it's not helping; this happens when the hash
- * function isn't a good fit for the key domain. When expansion is inhibited
- * the hash will still work, albeit no longer in constant time. */
- unsigned ineff_expands, noexpand;
-
- uint32_t signature; /* used only to find hash tables in external analysis */
-#ifdef HASH_BLOOM
- uint32_t bloom_sig; /* used only to test bloom exists in external analysis */
- uint8_t *bloom_bv;
- char bloom_nbits;
-#endif
-
-} UT_hash_table;
-
-typedef struct UT_hash_handle {
- struct UT_hash_table *tbl;
- void *prev; /* prev element in app order */
- void *next; /* next element in app order */
- struct UT_hash_handle *hh_prev; /* previous hh in bucket order */
- struct UT_hash_handle *hh_next; /* next hh in bucket order */
- void *key; /* ptr to enclosing struct's key */
- unsigned keylen; /* enclosing struct's key len */
- unsigned hashv; /* result of hash-fcn(key) */
-} UT_hash_handle;
-
-#endif /* UTHASH_H */