ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-10-31 03:29:01 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx-test: add ttl testcase.

Browse Source 
Change-Id: Ia5d164fde250e959226a53c63fcaf024ffe965a2
This commit is contained in:
Leonid Yuriev
2019-06-21 22:42:45 +03:00
parent eecec74e21
commit 9cf9d6eac2
11 changed files with 192 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
test/utils.h
View File

@@ -1,4 +1,4 @@
/*
/*
* Copyright 2017-2019 Leonid Yuriev <leo@yuriev.ru>
* and other libmdbx authors: please see AUTHORS file.
* All rights reserved.
@@ -327,7 +327,47 @@ std::string format(const char *fmt, ...);
uint64_t entropy_ticks(void);
uint64_t entropy_white(void);
uint64_t prng64_careless(uint64_t &state);
static inline uint64_t bleach64(uint64_t dirty) {
return mul_64x64_high(bswap64(dirty), UINT64_C(17048867929148541611));
}
static inline uint32_t bleach32(uint32_t dirty) {
return (uint32_t)((bswap32(dirty) * UINT64_C(2175734609)) >> 32);
}
static inline uint64_t prng64_map1_careless(uint64_t state) {
return state * UINT64_C(6364136223846793005) + 1;
}
static inline uint64_t prng64_map2_careless(uint64_t state) {
return (state + UINT64_C(1442695040888963407)) *
UINT64_C(6364136223846793005);
}
static inline uint64_t prng64_map1_white(uint64_t state) {
return bleach64(prng64_map1_careless(state));
}
static inline uint64_t prng64_map2_white(uint64_t state) {
return bleach64(prng64_map2_careless(state));
}
static inline uint64_t prng64_careless(uint64_t &state) {
state = prng64_map1_careless(state);
return state;
}
static inline double u64_to_double1(uint64_t v) {
union {
uint64_t u64;
double d;
} casting;
casting.u64 = UINT64_C(0x3ff) << 52 | (v >> 12);
assert(casting.d >= 1.0 && casting.d < 2.0);
return casting.d - 1.0;
}
uint64_t prng64_white(uint64_t &state);
uint32_t prng32(uint64_t &state);
void prng_fill(uint64_t &state, void *ptr, size_t bytes);