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clean hash.c

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Bruno Raoult
2024-05-14 11:57:51 +02:00
parent 038f6b5669
commit 9ef262af48
1 changed files with 5 additions and 59 deletions
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64
src/hash.c
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@@ -105,23 +105,6 @@ key zobrist_calc(pos_t *pos)
* @return: hash table size in Mb. If memory allocation fails, the function does
* not return.
*/
#include <stdio.h>
#include <locale.h>
static void zob(char *str, size_t alloc)
{
extern char etext, edata, end;
printf("%s %lu ", str, alloc);
//printf(" program text (etext) %10p\n", &etext);
//printf(" initialized data (edata) %10p\n", &edata);
//printf(" uninitialized data (end) %10p\n", &end);
fflush(stdout);
printf("\n\tpress a key...");
getchar();
}
int hash_create(s32 sizemb)
{
size_t bytes, target_nbuckets;
@@ -129,12 +112,12 @@ int hash_create(s32 sizemb)
static_assert(sizeof(hentry_t) == 16, "fatal: hentry_t size != 16");
printf("mb = %'7u ", sizemb);
//printf("mb = %'7u ", sizemb);
/* adjust tt size */
if (sizemb <= 0)
sizemb = HASH_SIZE_DEFAULT;
sizemb = clamp(sizemb, HASH_SIZE_MIN, HASH_SIZE_MAX);
printf("-> %'6d ", sizemb);
//printf("-> %'6d ", sizemb);
bytes = sizemb * 1024ull * 1024ull; /* bytes wanted */
target_nbuckets = bytes / sizeof(bucket_t); /* target buckets */
@@ -160,10 +143,10 @@ int hash_create(s32 sizemb)
//printf("bits=%2d size=%'15lu/%'6d Mb/%'14lu buckets ",
// hash_tt.nbits, hash_tt.bytes, hash_tt.mb, hash_tt.nbuckets);
//printf("mask=%9x\n", hash_tt.mask);
} else {
printf("unchanged (cleared)\n");
//hash_clear();
}
//else {
// printf("unchanged (cleared)\n");
//}
/* attention - may fail ! */
hash_clear();
@@ -196,40 +179,3 @@ void hash_delete()
safe_free(hash_tt.keys);
memset(&hash_tt, 0, sizeof(hash_tt));
}
// #define zob()
int main()
{
printf("entry=%lu bucket=%lu\n", sizeof(hentry_t), sizeof(bucket_t));
zob("before alloc", 0);
setlocale(LC_NUMERIC, "");
hash_create(-1);
zob("after", -1);
hash_create(1);
hash_create(2);
hash_create(3);
hash_create(4);
hash_create(10);
zob("after", 10);
hash_create(20);
hash_create(40);
hash_create(100);
zob("after", 100);
hash_create(200);
hash_create(400);
hash_create(1000);
zob("after", 1000);
hash_create(1000);
zob("after", 1024);
//hash_create(2000);
//zob("after", 100);
hash_create(4096);
zob("after", 4096);
//hash_create(32767);
//hash_create(32768);
//hash_create(32769);
//hash_create(65536);
//hash_create(400000);
return 0;
}