You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.2 KiB
46 lines
1.2 KiB
// Copyright (c) 2016-2017 The Bitcoin Core developers |
|
// Distributed under the MIT software license, see the accompanying |
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php. |
|
|
|
#include <bench/bench.h> |
|
|
|
#include <support/lockedpool.h> |
|
|
|
#include <iostream> |
|
#include <vector> |
|
|
|
#define ASIZE 2048 |
|
#define BITER 5000 |
|
#define MSIZE 2048 |
|
|
|
static void BenchLockedPool(benchmark::State& state) |
|
{ |
|
void *synth_base = reinterpret_cast<void*>(0x08000000); |
|
const size_t synth_size = 1024*1024; |
|
Arena b(synth_base, synth_size, 16); |
|
|
|
std::vector<void*> addr; |
|
for (int x=0; x<ASIZE; ++x) |
|
addr.push_back(nullptr); |
|
uint32_t s = 0x12345678; |
|
while (state.KeepRunning()) { |
|
for (int x=0; x<BITER; ++x) { |
|
int idx = s & (addr.size()-1); |
|
if (s & 0x80000000) { |
|
b.free(addr[idx]); |
|
addr[idx] = nullptr; |
|
} else if(!addr[idx]) { |
|
addr[idx] = b.alloc((s >> 16) & (MSIZE-1)); |
|
} |
|
bool lsb = s & 1; |
|
s >>= 1; |
|
if (lsb) |
|
s ^= 0xf00f00f0; // LFSR period 0xf7ffffe0 |
|
} |
|
} |
|
for (void *ptr: addr) |
|
b.free(ptr); |
|
addr.clear(); |
|
} |
|
|
|
BENCHMARK(BenchLockedPool, 530);
|
|
|