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Add Mem class.

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XMRig 2017-06-09 15:09:21 +03:00
parent ef3af1c4fd
commit 30642881bf
5 changed files with 107 additions and 27 deletions
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175
win/memory_win.c
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@ -1,175 +0,0 @@
/* XMRig
* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
* Copyright 2016-2017 XMRig <support@xmrig.com>
*
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MEMORY_H__
#define __MEMORY_H__
#include <windows.h>
#include <ntsecapi.h>
#include <tchar.h>
#include "options.h"
#include "persistent_memory.h"
#include "utils/applog.h"
char *persistent_memory;
int persistent_memory_flags = 0;
/*****************************************************************
SetLockPagesPrivilege: a function to obtain or
release the privilege of locking physical pages.
Inputs:
HANDLE hProcess: Handle for the process for which the
privilege is needed
BOOL bEnable: Enable (TRUE) or disable?
Return value: TRUE indicates success, FALSE failure.
*****************************************************************/
/**
* AWE Example: https://msdn.microsoft.com/en-us/library/windows/desktop/aa366531(v=vs.85).aspx
* Creating a File Mapping Using Large Pages: https://msdn.microsoft.com/en-us/library/aa366543(VS.85).aspx
*/
static BOOL SetLockPagesPrivilege() {
HANDLE token;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token) != TRUE) {
return FALSE;
}
TOKEN_PRIVILEGES tp;
tp.PrivilegeCount = 1;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (LookupPrivilegeValue(NULL, SE_LOCK_MEMORY_NAME, &(tp.Privileges[0].Luid)) != TRUE) {
return FALSE;
}
BOOL rc = AdjustTokenPrivileges(token, FALSE, (PTOKEN_PRIVILEGES) &tp, 0, NULL, NULL);
if (rc != TRUE || GetLastError() != ERROR_SUCCESS) {
return FALSE;
}
CloseHandle(token);
return TRUE;
}
static LSA_UNICODE_STRING StringToLsaUnicodeString(LPCTSTR string) {
LSA_UNICODE_STRING lsaString;
DWORD dwLen = 0;
dwLen = wcslen(string);
lsaString.Buffer = (LPWSTR) string;
lsaString.Length = (USHORT)((dwLen) * sizeof(WCHAR));
lsaString.MaximumLength = (USHORT)((dwLen + 1) * sizeof(WCHAR));
return lsaString;
}
static BOOL ObtainLockPagesPrivilege() {
HANDLE token;
PTOKEN_USER user = NULL;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &token) == TRUE) {
DWORD size = 0;
GetTokenInformation(token, TokenUser, NULL, 0, &size);
if (size) {
user = (PTOKEN_USER) LocalAlloc(LPTR, size);
}
GetTokenInformation(token, TokenUser, user, size, &size);
CloseHandle(token);
}
if (!user) {
return FALSE;
}
LSA_HANDLE handle;
LSA_OBJECT_ATTRIBUTES attributes;
ZeroMemory(&attributes, sizeof(attributes));
BOOL result = FALSE;
if (LsaOpenPolicy(NULL, &attributes, POLICY_ALL_ACCESS, &handle) == 0) {
LSA_UNICODE_STRING str = StringToLsaUnicodeString(_T(SE_LOCK_MEMORY_NAME));
if (LsaAddAccountRights(handle, user->User.Sid, &str, 1) == 0) {
applog_notime(LOG_WARNING, "Huge pages support was successfully enabled, but reboot required to use it");
result = TRUE;
}
LsaClose(handle);
}
LocalFree(user);
return result;
}
static BOOL TrySetLockPagesPrivilege() {
if (SetLockPagesPrivilege()) {
return TRUE;
}
return ObtainLockPagesPrivilege() && SetLockPagesPrivilege();
}
const char * persistent_memory_allocate() {
const int ratio = (opt_double_hash && opt_algo != ALGO_CRYPTONIGHT_LITE) ? 2 : 1;
const int size = MEMORY * (opt_n_threads * ratio + 1);
if (TrySetLockPagesPrivilege()) {
persistent_memory_flags |= MEMORY_HUGEPAGES_AVAILABLE;
}
persistent_memory = VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE | MEM_LARGE_PAGES, PAGE_READWRITE);
if (!persistent_memory) {
persistent_memory = _mm_malloc(size, 16);
}
else {
persistent_memory_flags |= MEMORY_HUGEPAGES_ENABLED;
}
return persistent_memory;
}
void persistent_memory_free() {
if (persistent_memory_flags & MEMORY_HUGEPAGES_ENABLED) {
VirtualFree(persistent_memory, 0, MEM_RELEASE);
}
else {
_mm_free(persistent_memory);
}
}
#endif /* __MEMORY_H__ */