61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
// Copyright (c) 2011-2016 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <new>
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#include "hash.h"
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#if defined(WIN32)
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#include <Windows.h>
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#else
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#include <sys/mman.h>
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#endif
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using std::bad_alloc;
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namespace Crypto {
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enum {
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MAP_SIZE = SLOW_HASH_CONTEXT_SIZE + ((-SLOW_HASH_CONTEXT_SIZE) & 0xfff)
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};
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#if defined(WIN32)
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cn_context::cn_context() {
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data = VirtualAlloc(nullptr, MAP_SIZE, MEM_COMMIT, PAGE_READWRITE);
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if (data == nullptr) {
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throw bad_alloc();
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}
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}
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cn_context::~cn_context() {
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if (!VirtualFree(data, 0, MEM_RELEASE)) {
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throw bad_alloc();
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}
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}
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#else
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cn_context::cn_context() {
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#if !defined(__APPLE__)
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data = mmap(nullptr, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);
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#else
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data = mmap(nullptr, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
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#endif
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if (data == MAP_FAILED) {
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throw bad_alloc();
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}
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mlock(data, MAP_SIZE);
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}
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cn_context::~cn_context() {
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if (munmap(data, MAP_SIZE) != 0) {
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throw bad_alloc();
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}
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}
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#endif
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}
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