pg: Add support for record/composite types

This is simply magical. \o/

Vendored in khashl.h. I wouldn't have used it if this were the only
place where I'd need a custom hash table, but it should come in handy
for other tasks as well, especially when I get to implementing an LRU
for prepared statement caching.

(Can all be done with Perl HV's, but they're less efficient and more
cumbersome for these tasks)
This commit is contained in:
Yorhel 2025-02-11 15:56:35 +01:00
parent 33fe0d98a8
commit 87d99e412b
5 changed files with 642 additions and 4 deletions

1
FU.xs
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@ -10,6 +10,7 @@
#include "perl.h" #include "perl.h"
#include "XSUB.h" #include "XSUB.h"
#include "c/khashl.h"
#include "c/common.c" #include "c/common.c"
#include "c/jsonfmt.c" #include "c/jsonfmt.c"
#include "c/jsonparse.c" #include "c/jsonparse.c"

482
c/khashl.h Normal file
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@ -0,0 +1,482 @@
/* The MIT License
Copyright (c) 2019- 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.
*/
#ifndef __AC_KHASHL_H
#define __AC_KHASHL_H
#define AC_VERSION_KHASHL_H "r30"
#include <stdlib.h>
#include <string.h>
#include <limits.h>
/************************************
* Compiler specific configurations *
************************************/
#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 */
#define KH_LOCAL static kh_inline klib_unused
typedef khint32_t khint_t;
typedef const char *kh_cstr_t;
/***********************
* Configurable macros *
***********************/
#ifndef kh_max_count /* set the max load factor */
#define kh_max_count(cap) (((cap)>>1) + ((cap)>>2)) /* default load factor: 75% */
#endif
#ifndef kh_packed /* pack the key-value struct */
#define kh_packed __attribute__ ((__packed__))
#endif
#if !defined(Kmalloc) || !defined(Kcalloc) || !defined(Krealloc) || !defined(Kfree)
#define Kmalloc(km, type, cnt) ((type*)malloc((cnt) * sizeof(type)))
#define Kcalloc(km, type, cnt) ((type*)calloc((cnt), sizeof(type)))
#define Krealloc(km, type, ptr, cnt) ((type*)realloc((ptr), (cnt) * sizeof(type)))
#define Kfree(km, ptr) free(ptr)
#endif
/****************************
* Simple private functions *
****************************/
#define __kh_used(flag, i) (flag[i>>5] >> (i&0x1fU) & 1U)
#define __kh_set_used(flag, i) (flag[i>>5] |= 1U<<(i&0x1fU))
#define __kh_set_unused(flag, i) (flag[i>>5] &= ~(1U<<(i&0x1fU)))
#define __kh_fsize(m) ((m) < 32? 1 : (m)>>5)
static kh_inline khint_t __kh_h2b(khint_t hash, khint_t bits) { return hash * 2654435769U >> (32 - bits); } /* Fibonacci hashing */
/*******************
* Hash table base *
*******************/
#define __KHASHL_TYPE(HType, khkey_t) \
typedef struct HType { \
void *km; \
khint_t bits, count; \
khint32_t *used; \
khkey_t *keys; \
} HType;
#define __KHASHL_PROTOTYPES(HType, prefix, khkey_t) \
extern HType *prefix##_init(void); \
extern HType *prefix##_init2(void *km); \
extern void prefix##_destroy(HType *h); \
extern void prefix##_clear(HType *h); \
extern khint_t prefix##_getp(const HType *h, const khkey_t *key); \
extern int prefix##_resize(HType *h, khint_t new_n_buckets); \
extern khint_t prefix##_putp(HType *h, const khkey_t *key, int *absent); \
extern void prefix##_del(HType *h, khint_t k);
#define __KHASHL_IMPL_BASIC(SCOPE, HType, prefix) \
SCOPE HType *prefix##_init2(void *km) { \
HType *h = Kcalloc(km, HType, 1); \
h->km = km; \
return h; \
} \
SCOPE HType *prefix##_init(void) { return prefix##_init2(0); } \
SCOPE void prefix##_destroy(HType *h) { \
if (!h) return; \
Kfree(h->km, (void*)h->keys); Kfree(h->km, h->used); \
Kfree(h->km, h); \
} \
SCOPE void prefix##_clear(HType *h) { \
if (h && h->used) { \
khint_t n_buckets = (khint_t)1U << h->bits; \
memset(h->used, 0, __kh_fsize(n_buckets) * sizeof(khint32_t)); \
h->count = 0; \
} \
}
#define __KHASHL_IMPL_GET(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
SCOPE khint_t prefix##_getp_core(const HType *h, const khkey_t *key, khint_t hash) { \
khint_t i, last, n_buckets, mask; \
if (h->keys == 0) return 0; \
n_buckets = (khint_t)1U << h->bits; \
mask = n_buckets - 1U; \
i = last = __kh_h2b(hash, h->bits); \
while (__kh_used(h->used, i) && !__hash_eq(h->keys[i], *key)) { \
i = (i + 1U) & mask; \
if (i == last) return n_buckets; \
} \
return !__kh_used(h->used, i)? n_buckets : i; \
} \
SCOPE khint_t prefix##_getp(const HType *h, const khkey_t *key) { return prefix##_getp_core(h, key, __hash_fn(*key)); } \
SCOPE khint_t prefix##_get(const HType *h, khkey_t key) { return prefix##_getp_core(h, &key, __hash_fn(key)); }
#define __KHASHL_IMPL_RESIZE(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
SCOPE int prefix##_resize(HType *h, khint_t new_n_buckets) { \
khint32_t *new_used = 0; \
khint_t j = 0, x = new_n_buckets, n_buckets, new_bits, new_mask; \
while ((x >>= 1) != 0) ++j; \
if (new_n_buckets & (new_n_buckets - 1)) ++j; \
new_bits = j > 2? j : 2; \
new_n_buckets = (khint_t)1U << new_bits; \
if (h->count > kh_max_count(new_n_buckets)) return 0; /* requested size is too small */ \
new_used = Kmalloc(h->km, khint32_t, __kh_fsize(new_n_buckets)); \
memset(new_used, 0, __kh_fsize(new_n_buckets) * sizeof(khint32_t)); \
if (!new_used) return -1; /* not enough memory */ \
n_buckets = h->keys? (khint_t)1U<<h->bits : 0U; \
if (n_buckets < new_n_buckets) { /* expand */ \
khkey_t *new_keys = Krealloc(h->km, khkey_t, h->keys, new_n_buckets); \
if (!new_keys) { Kfree(h->km, new_used); return -1; } \
h->keys = new_keys; \
} /* otherwise shrink */ \
new_mask = new_n_buckets - 1; \
for (j = 0; j != n_buckets; ++j) { \
khkey_t key; \
if (!__kh_used(h->used, j)) continue; \
key = h->keys[j]; \
__kh_set_unused(h->used, j); \
while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \
khint_t i; \
i = __kh_h2b(__hash_fn(key), new_bits); \
while (__kh_used(new_used, i)) i = (i + 1) & new_mask; \
__kh_set_used(new_used, i); \
if (i < n_buckets && __kh_used(h->used, i)) { /* kick out the existing element */ \
{ khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \
__kh_set_unused(h->used, i); /* mark it as deleted in the old hash table */ \
} else { /* write the element and jump out of the loop */ \
h->keys[i] = key; \
break; \
} \
} \
} \
if (n_buckets > new_n_buckets) /* shrink the hash table */ \
h->keys = Krealloc(h->km, khkey_t, (void*)h->keys, new_n_buckets); \
Kfree(h->km, h->used); /* free the working space */ \
h->used = new_used, h->bits = new_bits; \
return 0; \
}
#define __KHASHL_IMPL_PUT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
SCOPE khint_t prefix##_putp_core(HType *h, const khkey_t *key, khint_t hash, int *absent) { \
khint_t n_buckets, i, last, mask; \
n_buckets = h->keys? (khint_t)1U<<h->bits : 0U; \
*absent = -1; \
if (h->count >= kh_max_count(n_buckets)) { /* rehashing */ \
if (prefix##_resize(h, n_buckets + 1U) < 0) \
return n_buckets; \
n_buckets = (khint_t)1U<<h->bits; \
} /* TODO: to implement automatically shrinking; resize() already support shrinking */ \
mask = n_buckets - 1; \
i = last = __kh_h2b(hash, h->bits); \
while (__kh_used(h->used, i) && !__hash_eq(h->keys[i], *key)) { \
i = (i + 1U) & mask; \
if (i == last) break; \
} \
if (!__kh_used(h->used, i)) { /* not present at all */ \
h->keys[i] = *key; \
__kh_set_used(h->used, i); \
++h->count; \
*absent = 1; \
} else *absent = 0; /* Don't touch h->keys[i] if present */ \
return i; \
} \
SCOPE khint_t prefix##_putp(HType *h, const khkey_t *key, int *absent) { return prefix##_putp_core(h, key, __hash_fn(*key), absent); } \
SCOPE khint_t prefix##_put(HType *h, khkey_t key, int *absent) { return prefix##_putp_core(h, &key, __hash_fn(key), absent); }
#define __KHASHL_IMPL_DEL(SCOPE, HType, prefix, khkey_t, __hash_fn) \
SCOPE int prefix##_del(HType *h, khint_t i) { \
khint_t j = i, k, mask, n_buckets; \
if (h->keys == 0) return 0; \
n_buckets = (khint_t)1U<<h->bits; \
mask = n_buckets - 1U; \
while (1) { \
j = (j + 1U) & mask; \
if (j == i || !__kh_used(h->used, j)) break; /* j==i only when the table is completely full */ \
k = __kh_h2b(__hash_fn(h->keys[j]), h->bits); \
if ((j > i && (k <= i || k > j)) || (j < i && (k <= i && k > j))) \
h->keys[i] = h->keys[j], i = j; \
} \
__kh_set_unused(h->used, i); \
--h->count; \
return 1; \
}
#define KHASHL_DECLARE(HType, prefix, khkey_t) \
__KHASHL_TYPE(HType, khkey_t) \
__KHASHL_PROTOTYPES(HType, prefix, khkey_t)
#define KHASHL_INIT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
__KHASHL_TYPE(HType, khkey_t) \
__KHASHL_IMPL_BASIC(SCOPE, HType, prefix) \
__KHASHL_IMPL_GET(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
__KHASHL_IMPL_RESIZE(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
__KHASHL_IMPL_PUT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
__KHASHL_IMPL_DEL(SCOPE, HType, prefix, khkey_t, __hash_fn)
/***************************
* Ensemble of hash tables *
***************************/
typedef struct {
khint_t sub, pos;
} kh_ensitr_t;
#define KHASHE_INIT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
KHASHL_INIT(KH_LOCAL, HType##_sub, prefix##_sub, khkey_t, __hash_fn, __hash_eq) \
typedef struct HType { \
void *km; \
khint64_t count:54, bits:8; \
HType##_sub *sub; \
} HType; \
SCOPE HType *prefix##_init2(void *km, int bits) { \
HType *g; \
g = Kcalloc(km, HType, 1); \
g->bits = bits, g->km = km; \
g->sub = Kcalloc(km, HType##_sub, 1U<<bits); \
return g; \
} \
SCOPE HType *prefix##_init(int bits) { return prefix##_init2(0, bits); } \
SCOPE void prefix##_destroy(HType *g) { \
int t; \
if (!g) return; \
for (t = 0; t < 1<<g->bits; ++t) { Kfree(g->km, (void*)g->sub[t].keys); Kfree(g->km, g->sub[t].used); } \
Kfree(g->km, g->sub); Kfree(g->km, g); \
} \
SCOPE kh_ensitr_t prefix##_getp(const HType *g, const khkey_t *key) { \
khint_t hash, low, ret; \
kh_ensitr_t r; \
HType##_sub *h; \
hash = __hash_fn(*key); \
low = hash & ((1U<<g->bits) - 1); \
h = &g->sub[low]; \
ret = prefix##_sub_getp_core(h, key, hash); \
if (ret == kh_end(h)) r.sub = low, r.pos = (khint_t)-1; \
else r.sub = low, r.pos = ret; \
return r; \
} \
SCOPE kh_ensitr_t prefix##_get(const HType *g, const khkey_t key) { return prefix##_getp(g, &key); } \
SCOPE kh_ensitr_t prefix##_putp(HType *g, const khkey_t *key, int *absent) { \
khint_t hash, low, ret; \
kh_ensitr_t r; \
HType##_sub *h; \
hash = __hash_fn(*key); \
low = hash & ((1U<<g->bits) - 1); \
h = &g->sub[low]; \
ret = prefix##_sub_putp_core(h, key, hash, absent); \
if (*absent) ++g->count; \
r.sub = low, r.pos = ret; \
return r; \
} \
SCOPE kh_ensitr_t prefix##_put(HType *g, const khkey_t key, int *absent) { return prefix##_putp(g, &key, absent); } \
SCOPE int prefix##_del(HType *g, kh_ensitr_t itr) { \
HType##_sub *h = &g->sub[itr.sub]; \
int ret; \
ret = prefix##_sub_del(h, itr.pos); \
if (ret) --g->count; \
return ret; \
} \
SCOPE void prefix##_clear(HType *g) { \
int i; \
for (i = 0; i < 1U<<g->bits; ++i) prefix##_sub_clear(&g->sub[i]); \
g->count = 0; \
}
/*****************************
* More convenient interface *
*****************************/
/* common */
#define KHASHL_SET_INIT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
typedef struct { khkey_t key; } kh_packed HType##_s_bucket_t; \
static kh_inline khint_t prefix##_s_hash(HType##_s_bucket_t x) { return __hash_fn(x.key); } \
static kh_inline int prefix##_s_eq(HType##_s_bucket_t x, HType##_s_bucket_t y) { return __hash_eq(x.key, y.key); } \
KHASHL_INIT(KH_LOCAL, HType, prefix##_s, HType##_s_bucket_t, prefix##_s_hash, prefix##_s_eq) \
SCOPE HType *prefix##_init(void) { return prefix##_s_init(); } \
SCOPE HType *prefix##_init2(void *km) { return prefix##_s_init2(km); } \
SCOPE void prefix##_destroy(HType *h) { prefix##_s_destroy(h); } \
SCOPE void prefix##_resize(HType *h, khint_t new_n_buckets) { prefix##_s_resize(h, new_n_buckets); } \
SCOPE khint_t prefix##_get(const HType *h, khkey_t key) { HType##_s_bucket_t t; t.key = key; return prefix##_s_getp(h, &t); } \
SCOPE int prefix##_del(HType *h, khint_t k) { return prefix##_s_del(h, k); } \
SCOPE khint_t prefix##_put(HType *h, khkey_t key, int *absent) { HType##_s_bucket_t t; t.key = key; return prefix##_s_putp(h, &t, absent); } \
SCOPE void prefix##_clear(HType *h) { prefix##_s_clear(h); }
#define KHASHL_MAP_INIT(SCOPE, HType, prefix, khkey_t, kh_val_t, __hash_fn, __hash_eq) \
typedef struct { khkey_t key; kh_val_t val; } kh_packed HType##_m_bucket_t; \
static kh_inline khint_t prefix##_m_hash(HType##_m_bucket_t x) { return __hash_fn(x.key); } \
static kh_inline int prefix##_m_eq(HType##_m_bucket_t x, HType##_m_bucket_t y) { return __hash_eq(x.key, y.key); } \
KHASHL_INIT(KH_LOCAL, HType, prefix##_m, HType##_m_bucket_t, prefix##_m_hash, prefix##_m_eq) \
SCOPE HType *prefix##_init(void) { return prefix##_m_init(); } \
SCOPE HType *prefix##_init2(void *km) { return prefix##_m_init2(km); } \
SCOPE void prefix##_destroy(HType *h) { prefix##_m_destroy(h); } \
SCOPE void prefix##_resize(HType *h, khint_t new_n_buckets) { prefix##_m_resize(h, new_n_buckets); } \
SCOPE khint_t prefix##_get(const HType *h, khkey_t key) { HType##_m_bucket_t t; t.key = key; return prefix##_m_getp(h, &t); } \
SCOPE int prefix##_del(HType *h, khint_t k) { return prefix##_m_del(h, k); } \
SCOPE khint_t prefix##_put(HType *h, khkey_t key, int *absent) { HType##_m_bucket_t t; t.key = key; return prefix##_m_putp(h, &t, absent); } \
SCOPE void prefix##_clear(HType *h) { prefix##_m_clear(h); }
/* cached hashes to trade memory for performance when hashing and comparison are expensive */
#define __kh_cached_hash(x) ((x).hash)
#define KHASHL_CSET_INIT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
typedef struct { khkey_t key; khint_t hash; } kh_packed HType##_cs_bucket_t; \
static kh_inline int prefix##_cs_eq(HType##_cs_bucket_t x, HType##_cs_bucket_t y) { return x.hash == y.hash && __hash_eq(x.key, y.key); } \
KHASHL_INIT(KH_LOCAL, HType, prefix##_cs, HType##_cs_bucket_t, __kh_cached_hash, prefix##_cs_eq) \
SCOPE HType *prefix##_init(void) { return prefix##_cs_init(); } \
SCOPE void prefix##_destroy(HType *h) { prefix##_cs_destroy(h); } \
SCOPE khint_t prefix##_get(const HType *h, khkey_t key) { HType##_cs_bucket_t t; t.key = key; t.hash = __hash_fn(key); return prefix##_cs_getp(h, &t); } \
SCOPE int prefix##_del(HType *h, khint_t k) { return prefix##_cs_del(h, k); } \
SCOPE khint_t prefix##_put(HType *h, khkey_t key, int *absent) { HType##_cs_bucket_t t; t.key = key, t.hash = __hash_fn(key); return prefix##_cs_putp(h, &t, absent); } \
SCOPE void prefix##_clear(HType *h) { prefix##_cs_clear(h); }
#define KHASHL_CMAP_INIT(SCOPE, HType, prefix, khkey_t, kh_val_t, __hash_fn, __hash_eq) \
typedef struct { khkey_t key; kh_val_t val; khint_t hash; } kh_packed HType##_cm_bucket_t; \
static kh_inline int prefix##_cm_eq(HType##_cm_bucket_t x, HType##_cm_bucket_t y) { return x.hash == y.hash && __hash_eq(x.key, y.key); } \
KHASHL_INIT(KH_LOCAL, HType, prefix##_cm, HType##_cm_bucket_t, __kh_cached_hash, prefix##_cm_eq) \
SCOPE HType *prefix##_init(void) { return prefix##_cm_init(); } \
SCOPE void prefix##_destroy(HType *h) { prefix##_cm_destroy(h); } \
SCOPE khint_t prefix##_get(const HType *h, khkey_t key) { HType##_cm_bucket_t t; t.key = key; t.hash = __hash_fn(key); return prefix##_cm_getp(h, &t); } \
SCOPE int prefix##_del(HType *h, khint_t k) { return prefix##_cm_del(h, k); } \
SCOPE khint_t prefix##_put(HType *h, khkey_t key, int *absent) { HType##_cm_bucket_t t; t.key = key, t.hash = __hash_fn(key); return prefix##_cm_putp(h, &t, absent); } \
SCOPE void prefix##_clear(HType *h) { prefix##_cm_clear(h); }
/* ensemble for huge hash tables */
#define KHASHE_SET_INIT(SCOPE, HType, prefix, khkey_t, __hash_fn, __hash_eq) \
typedef struct { khkey_t key; } kh_packed HType##_es_bucket_t; \
static kh_inline khint_t prefix##_es_hash(HType##_es_bucket_t x) { return __hash_fn(x.key); } \
static kh_inline int prefix##_es_eq(HType##_es_bucket_t x, HType##_es_bucket_t y) { return __hash_eq(x.key, y.key); } \
KHASHE_INIT(KH_LOCAL, HType, prefix##_es, HType##_es_bucket_t, prefix##_es_hash, prefix##_es_eq) \
SCOPE HType *prefix##_init(int bits) { return prefix##_es_init(bits); } \
SCOPE void prefix##_destroy(HType *h) { prefix##_es_destroy(h); } \
SCOPE kh_ensitr_t prefix##_get(const HType *h, khkey_t key) { HType##_es_bucket_t t; t.key = key; return prefix##_es_getp(h, &t); } \
SCOPE int prefix##_del(HType *h, kh_ensitr_t k) { return prefix##_es_del(h, k); } \
SCOPE kh_ensitr_t prefix##_put(HType *h, khkey_t key, int *absent) { HType##_es_bucket_t t; t.key = key; return prefix##_es_putp(h, &t, absent); } \
SCOPE void prefix##_clear(HType *h) { prefix##_es_clear(h); }
#define KHASHE_MAP_INIT(SCOPE, HType, prefix, khkey_t, kh_val_t, __hash_fn, __hash_eq) \
typedef struct { khkey_t key; kh_val_t val; } kh_packed HType##_em_bucket_t; \
static kh_inline khint_t prefix##_em_hash(HType##_em_bucket_t x) { return __hash_fn(x.key); } \
static kh_inline int prefix##_em_eq(HType##_em_bucket_t x, HType##_em_bucket_t y) { return __hash_eq(x.key, y.key); } \
KHASHE_INIT(KH_LOCAL, HType, prefix##_em, HType##_em_bucket_t, prefix##_em_hash, prefix##_em_eq) \
SCOPE HType *prefix##_init(int bits) { return prefix##_em_init(bits); } \
SCOPE void prefix##_destroy(HType *h) { prefix##_em_destroy(h); } \
SCOPE kh_ensitr_t prefix##_get(const HType *h, khkey_t key) { HType##_em_bucket_t t; t.key = key; return prefix##_em_getp(h, &t); } \
SCOPE int prefix##_del(HType *h, kh_ensitr_t k) { return prefix##_em_del(h, k); } \
SCOPE kh_ensitr_t prefix##_put(HType *h, khkey_t key, int *absent) { HType##_em_bucket_t t; t.key = key; return prefix##_em_putp(h, &t, absent); } \
SCOPE void prefix##_clear(HType *h) { prefix##_em_clear(h); }
/**************************
* Public macro functions *
**************************/
#define kh_bucket(h, x) ((h)->keys[x])
#define kh_size(h) ((h)->count)
#define kh_capacity(h) ((h)->keys? 1U<<(h)->bits : 0U)
#define kh_end(h) kh_capacity(h)
#define kh_key(h, x) ((h)->keys[x].key)
#define kh_val(h, x) ((h)->keys[x].val)
#define kh_exist(h, x) __kh_used((h)->used, (x))
#define kh_foreach(h, x) for ((x) = 0; (x) != kh_end(h); ++(x)) if (kh_exist((h), (x)))
#define kh_ens_key(g, x) kh_key(&(g)->sub[(x).sub], (x).pos)
#define kh_ens_val(g, x) kh_val(&(g)->sub[(x).sub], (x).pos)
#define kh_ens_exist(g, x) kh_exist(&(g)->sub[(x).sub], (x).pos)
#define kh_ens_is_end(x) ((x).pos == (khint_t)-1)
#define kh_ens_size(g) ((g)->count)
#define kh_ens_foreach(g, x) for ((x).sub = 0; (x).sub != 1<<(g)->bits; ++(x).sub) for ((x).pos = 0; (x).pos != kh_end(&(g)->sub[(x).sub]); ++(x).pos) if (kh_ens_exist((g), (x)))
/**************************************
* Common hash and equality functions *
**************************************/
#define kh_eq_generic(a, b) ((a) == (b))
#define kh_eq_str(a, b) (strcmp((a), (b)) == 0)
#define kh_hash_dummy(x) ((khint_t)(x))
static kh_inline khint_t kh_hash_uint32(khint_t x) { /* murmur finishing */
x ^= x >> 16;
x *= 0x85ebca6bU;
x ^= x >> 13;
x *= 0xc2b2ae35U;
x ^= x >> 16;
return x;
}
static kh_inline khint_t kh_hash_uint64(khint64_t x) { /* splitmix64; see https://nullprogram.com/blog/2018/07/31/ for inversion */
x ^= x >> 30;
x *= 0xbf58476d1ce4e5b9ULL;
x ^= x >> 27;
x *= 0x94d049bb133111ebULL;
x ^= x >> 31;
return (khint_t)x;
}
static kh_inline khint_t kh_hash_str(kh_cstr_t s) { /* FNV1a */
khint_t h = 2166136261U;
const unsigned char *t = (const unsigned char*)s;
for (; *t; ++t)
h ^= *t, h *= 16777619;
return h;
}
static kh_inline khint_t kh_hash_bytes(int len, const unsigned char *s) {
khint_t h = 2166136261U;
int i;
for (i = 0; i < len; ++i)
h ^= s[i], h *= 16777619;
return h;
}
#endif /* __AC_KHASHL_H */

View file

@ -3,6 +3,8 @@
#define FUPG_TEXT_RESULTS 4 #define FUPG_TEXT_RESULTS 4
#define FUPG_TEXT (FUPG_TEXT_PARAMS|FUPG_TEXT_RESULTS) #define FUPG_TEXT (FUPG_TEXT_PARAMS|FUPG_TEXT_RESULTS)
KHASHL_MAP_INIT(KH_LOCAL, fupg_records, fupg_records, Oid, fupg_record *, kh_hash_uint32, kh_eq_generic);
typedef struct { typedef struct {
SV *self; SV *self;
PGconn *conn; PGconn *conn;
@ -12,6 +14,7 @@ typedef struct {
int stflags; int stflags;
int ntypes; int ntypes;
fupg_type *types; fupg_type *types;
fupg_records *records;
fustr buf; /* Scratch space for query params */ fustr buf; /* Scratch space for query params */
} fupg_conn; } fupg_conn;
@ -135,6 +138,7 @@ static SV *fupg_connect(pTHX_ const char *str) {
c->stflags = 0; c->stflags = 0;
c->ntypes = 0; c->ntypes = 0;
c->types = NULL; c->types = NULL;
c->records = fupg_records_init();
fustr_init(&c->buf, NULL, SIZE_MAX); fustr_init(&c->buf, NULL, SIZE_MAX);
return fu_selfobj(c, "FU::Pg::conn"); return fu_selfobj(c, "FU::Pg::conn");
} }
@ -159,6 +163,9 @@ static void fupg_conn_destroy(fupg_conn *c) {
PQfinish(c->conn); PQfinish(c->conn);
if (c->buf.sv) SvREFCNT_dec(c->buf.sv); if (c->buf.sv) SvREFCNT_dec(c->buf.sv);
safefree(c->types); safefree(c->types);
khint_t k;
kh_foreach(c->records, k) safefree(kh_val(c->records, k));
fupg_records_destroy(c->records);
safefree(c); safefree(c);
} }
@ -255,6 +262,7 @@ static void fupg_refresh_types(pTHX_ fupg_conn *c) {
const char *sql = const char *sql =
"SELECT oid, typname, typtype" "SELECT oid, typname, typtype"
", CASE WHEN typtype = 'd' THEN typbasetype" ", CASE WHEN typtype = 'd' THEN typbasetype"
" WHEN typtype = 'c' THEN typrelid"
" WHEN typcategory = 'A' THEN typelem" " WHEN typcategory = 'A' THEN typelem"
" ELSE 0 END" " ELSE 0 END"
" FROM pg_type" " FROM pg_type"
@ -277,6 +285,9 @@ static void fupg_refresh_types(pTHX_ fupg_conn *c) {
if (typ == 'd') { /* domain */ if (typ == 'd') { /* domain */
t->send = fupg_send_domain; t->send = fupg_send_domain;
t->recv = fupg_recv_domain; t->recv = fupg_recv_domain;
} else if (typ == 'c') { /* composite type */
t->send = fupg_send_record;
t->recv = fupg_recv_record;
} else { /* array */ } else { /* array */
t->send = fupg_send_array; t->send = fupg_send_array;
t->recv = fupg_recv_array; t->recv = fupg_recv_array;
@ -286,7 +297,7 @@ static void fupg_refresh_types(pTHX_ fupg_conn *c) {
t->send = fupg_send_text; t->send = fupg_send_text;
t->recv = fupg_recv_text; t->recv = fupg_recv_text;
} else { } else {
/* TODO: records, (multi)ranges, custom overrides, by-name lookup for dynamic-oid types */ /* TODO: (multi)ranges, custom overrides, by-name lookup for dynamic-oid types */
const fupg_type *builtin = fupg_builtin_byoid(t->oid); const fupg_type *builtin = fupg_builtin_byoid(t->oid);
if (builtin) { if (builtin) {
t->send = builtin->send; t->send = builtin->send;
@ -308,6 +319,39 @@ static const fupg_type *fupg_lookup_type(pTHX_ fupg_conn *c, int *refresh_done,
return fupg_type_byoid(c->types, c->ntypes, oid); return fupg_type_byoid(c->types, c->ntypes, oid);
} }
static const fupg_record *fupg_lookup_record(pTHX_ fupg_conn *c, Oid oid) {
khint_t k = fupg_records_get(c->records, oid);
if (k != kh_end(c->records)) return kh_val(c->records, k);
const char *sql =
"SELECT atttypid, attname"
" FROM pg_attribute"
" WHERE NOT attisdropped AND attnum > 0 AND attrelid = $1"
" ORDER BY attnum";
char buf[4];
fu_tobeU(32, buf, oid);
const char *abuf = buf;
int len = 4;
int format = 1;
PGresult *r = PQexecParams(c->conn, sql, 1, NULL, &abuf, &len, &format, 1);
if (!r) fupg_conn_croak(c, "exec");
if (PQresultStatus(r) != PGRES_TUPLES_OK) fupg_result_croak(r, "exec", sql);
fupg_record *record = safemalloc(sizeof(*record) + PQntuples(r) * sizeof(*record->attrs));
record->nattrs = PQntuples(r);
int i;
for (i=0; i<record->nattrs; i++) {
record->attrs[i].oid = fu_frombeU(32, PQgetvalue(r, i, 0));
snprintf(record->attrs[i].name, sizeof(record->attrs->name), "%s", PQgetvalue(r, i, 1));
}
k = fupg_records_put(c->records, oid, &i);
kh_val(c->records, k) = record;
PQclear(r);
return record;
}
#define FUPGT_TEXT 1 #define FUPGT_TEXT 1
#define FUPGT_SEND 2 #define FUPGT_SEND 2
#define FUPGT_RECV 4 #define FUPGT_RECV 4
@ -337,13 +381,26 @@ static void fupg_tio_setup(pTHX_ fupg_conn *conn, fupg_tio *tio, int flags, Oid
if (flags & FUPGT_SEND ? tio->send == fupg_send_array : tio->recv == fupg_recv_array) { if (flags & FUPGT_SEND ? tio->send == fupg_send_array : tio->recv == fupg_recv_array) {
tio->arrayelem = safecalloc(1, sizeof(*tio->arrayelem)); tio->arrayelem = safecalloc(1, sizeof(*tio->arrayelem));
fupg_tio_setup(aTHX_ conn, tio->arrayelem, flags, t->elemoid, refresh_done); fupg_tio_setup(aTHX_ conn, tio->arrayelem, flags, t->elemoid, refresh_done);
} else if (flags & FUPGT_SEND ? tio->send == fupg_send_record : tio->recv == fupg_recv_record) {
tio->record.info = fupg_lookup_record(conn, t->elemoid);
if (!tio->record.info) fu_confess("Unable to find attributes for record type '%s' (oid %u, relid %u)", t->name, t->oid, t->elemoid);
tio->record.tio = safecalloc(tio->record.info->nattrs, sizeof(*tio->record.tio));
int i;
for (i=0; i<tio->record.info->nattrs; i++)
fupg_tio_setup(aTHX_ conn, tio->record.tio+i, flags, tio->record.info->attrs[i].oid, refresh_done);
} }
} }
static void fupg_tio_free(fupg_tio *tio) { static void fupg_tio_free(fupg_tio *tio) {
if (!tio) return; if (!tio) return;
/* XXX: This assumes send/recv are the same types, at least for arrays & records */
if (tio->send == fupg_send_array) { if (tio->send == fupg_send_array) {
fupg_tio_free(tio->arrayelem); fupg_tio_free(tio->arrayelem);
safefree(tio->arrayelem); safefree(tio->arrayelem);
} else if (tio->send == fupg_send_record) {
int i;
for (i=0; i<tio->record.info->nattrs; i++)
fupg_tio_free(tio->record.tio+i);
safefree(tio->record.tio);
} }
} }

View file

@ -7,6 +7,15 @@ typedef void (*fupg_send_fn)(pTHX_ const fupg_tio *, SV *, fustr *);
/* Receive function, takes a binary string and should return a Perl value. */ /* Receive function, takes a binary string and should return a Perl value. */
typedef SV *(*fupg_recv_fn)(pTHX_ const fupg_tio *, const char *, int); typedef SV *(*fupg_recv_fn)(pTHX_ const fupg_tio *, const char *, int);
/* Record/composite type definition */
typedef struct {
int nattrs;
struct {
Oid oid;
char name[64];
} attrs[];
} fupg_record;
/* Type I/O context */ /* Type I/O context */
struct fupg_tio { struct fupg_tio {
Oid oid; Oid oid;
@ -15,12 +24,16 @@ struct fupg_tio {
fupg_recv_fn recv; fupg_recv_fn recv;
union { union {
fupg_tio *arrayelem; fupg_tio *arrayelem;
struct {
const fupg_record *info;
fupg_tio *tio;
} record;
}; };
}; };
typedef struct { typedef struct {
Oid oid; Oid oid;
Oid elemoid; /* For arrays & domain types */ Oid elemoid; /* For arrays & domain types; relid for records */
char name[64]; char name[64];
fupg_send_fn send; fupg_send_fn send;
fupg_recv_fn recv; fupg_recv_fn recv;
@ -332,6 +345,62 @@ SENDFN(array) {
#undef ARRAY_MAXDIM #undef ARRAY_MAXDIM
RECVFN(record) {
if (len < 4) RERR("input data too short");
I32 nfields = fu_frombeI(32, buf);
if (nfields != ctx->record.info->nattrs) RERR("expected %d fields but got %d", ctx->record.info->nattrs, nfields);
buf += 4; len -= 4;
HV *hv = newHV();
SV *sv = sv_2mortal(newRV_noinc((SV *)hv));
I32 i;
for (i=0; i<nfields; i++) {
if (len < 8) RERR("input data too short");
U32 oid = fu_frombeU(32, buf);
if (oid != ctx->record.info->attrs[i].oid)
RERR("expected field %d to be of type %u but got %u", i, ctx->record.info->attrs[i].oid, oid);
I32 vlen = fu_frombeI(32, buf+4);
SV *r = &PL_sv_undef;
buf += 8; len -= 8;
if (vlen > len) RERR("input data too short");
if (vlen >= 0) {
r = ctx->record.tio[i].recv(aTHX_ ctx->record.tio+i, buf, vlen);
buf += vlen; len -= vlen;
}
hv_store(hv, ctx->record.info->attrs[i].name, -strlen(ctx->record.info->attrs[i].name), r, 0);
}
return SvREFCNT_inc(sv);
}
SENDFN(record) {
if (!SvROK(val)) SERR("expected a hashref");
SV *sv = SvRV(val);
SvGETMAGIC(sv);
if (SvTYPE(sv) != SVt_PVHV) SERR("expected a hashref");
HV *hv = (HV *)sv;
fustr_writebeU(32, out, ctx->record.info->nattrs);
I32 i;
for (i=0; i<ctx->record.info->nattrs; i++) {
fustr_writebeI(32, out, ctx->record.info->attrs[i].oid);
SV **rsv = hv_fetch(hv, ctx->record.info->attrs[i].name, -strlen(ctx->record.info->attrs[i].name), 0);
if (!rsv || !*rsv) {
fustr_writebeI(32, out, -1);
continue;
}
sv = *rsv;
SvGETMAGIC(sv);
if (!SvOK(sv)) {
fustr_writebeI(32, out, -1);
continue;
}
size_t lenoff = fustr_len(out);
fustr_write(out, "\0\0\0\0", 4);
ctx->record.tio[i].send(ctx->record.tio+i, sv, out);
fu_tobeU(32, fustr_start(out) + lenoff, fustr_len(out) - lenoff - 4);
}
}
RECVFN(inet) { /* Also works for cidr */ RECVFN(inet) { /* Also works for cidr */
char tmp[128]; char tmp[128];
if (len < 8) RERR("input data too short"); if (len < 8) RERR("input data too short");

View file

@ -6,25 +6,54 @@ die $@ if $@;
plan skip_all => 'Please set FU_TEST_DB to a PostgreSQL connection string to run these tests' if !$ENV{FU_TEST_DB}; plan skip_all => 'Please set FU_TEST_DB to a PostgreSQL connection string to run these tests' if !$ENV{FU_TEST_DB};
my $conn = FU::Pg->connect($ENV{FU_TEST_DB}); my $conn = FU::Pg->connect($ENV{FU_TEST_DB});
$conn->_debug_trace(0);
ok !eval { $conn->q('SELECT $1::aclitem', '')->exec; 1 }; ok !eval { $conn->q('SELECT $1::aclitem', '')->exec; 1 };
like $@, qr/Unable to send or receive/; like $@, qr/Unable to send or receive/;
{ {
my $txn = $conn->txn; my $txn = $conn->txn;
$txn->exec("CREATE TYPE fupg_test_enum AS ENUM('a', 'b', 'ccccccccccccccccccc')"); $txn->exec(<<~_);
CREATE TYPE fupg_test_enum AS ENUM('a', 'b', 'ccccccccccccccccccc');
CREATE DOMAIN fupg_test_domain AS fupg_test_enum CHECK(value IN('a','b'));
CREATE TYPE fupg_test_record AS (
a int,
aenum fupg_test_enum[],
domain fupg_test_domain
);
_
is $txn->q("SELECT 'a'::fupg_test_enum")->val, 'a'; is $txn->q("SELECT 'a'::fupg_test_enum")->val, 'a';
is $txn->q('SELECT $1::fupg_test_enum', 'ccccccccccccccccccc')->val, 'ccccccccccccccccccc'; is $txn->q('SELECT $1::fupg_test_enum', 'ccccccccccccccccccc')->val, 'ccccccccccccccccccc';
is_deeply $txn->q("SELECT '{a,b,null}'::fupg_test_enum[]")->val, ['a','b',undef]; is_deeply $txn->q("SELECT '{a,b,null}'::fupg_test_enum[]")->val, ['a','b',undef];
is $txn->q('SELECT $1::fupg_test_enum[]', ['a','b',undef])->text_results->val, '{a,b,NULL}'; is $txn->q('SELECT $1::fupg_test_enum[]', ['a','b',undef])->text_results->val, '{a,b,NULL}';
$txn->exec("CREATE DOMAIN fupg_test_domain AS fupg_test_enum CHECK(value IN('a','b'))");
is $txn->q("SELECT 'a'::fupg_test_domain")->val, 'a'; is $txn->q("SELECT 'a'::fupg_test_domain")->val, 'a';
is $txn->q('SELECT $1::fupg_test_domain', 'b')->val, 'b'; is $txn->q('SELECT $1::fupg_test_domain', 'b')->val, 'b';
is_deeply $txn->q("SELECT '{a,b,null}'::fupg_test_domain[]")->val, ['a','b',undef]; is_deeply $txn->q("SELECT '{a,b,null}'::fupg_test_domain[]")->val, ['a','b',undef];
is $txn->q('SELECT $1::fupg_test_domain[]', ['a','b',undef])->text_results->val, '{a,b,NULL}'; is $txn->q('SELECT $1::fupg_test_domain[]', ['a','b',undef])->text_results->val, '{a,b,NULL}';
my $val = { a => undef, aenum => ['a','b'], domain => 'a' };
is_deeply $txn->q("SELECT '(,\"{a,b}\",a)'::fupg_test_record")->val, $val;
is $txn->q('SELECT $1::fupg_test_record', $val)->text_results->val, '(,"{a,b}",a)';
$txn->exec(<<~_);
CREATE TEMPORARY TABLE fupg_test_table (
rec fupg_test_record,
dom fupg_test_domain
);
_
is_deeply $txn->q(q{SELECT '{"(\"(2,{},b)\",)","(\"(,,)\",b)"}'::fupg_test_table[]})->val, [
{ rec => { a => 2, aenum => [], domain => 'b' }, dom => undef },
{ rec => { a => undef, aenum => undef, domain => undef }, dom => 'b' },
];
is $txn->q('SELECT $1::fupg_test_table[]', [
{ rec => { a => 2, aenum => [], domain => 'b' }, dom => undef },
{ rec => {}, dom => 'b', extra => 1 },
])->text_results->val, '{"(\"(2,{},b)\",)","(\"(,,)\",b)"}';
} }
done_testing; done_testing;