mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
/** Memory managment.
|
|
*
|
|
* @author Daniel Krebs <github@daniel-krebs.net>
|
|
* @copyright 2017-2022, Institute for Automation of Complex Power Systems, EONERC
|
|
* @license GNU General Public License (version 3)
|
|
*
|
|
* VILLASfpga
|
|
*
|
|
* 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
|
|
* 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/>.
|
|
*********************************************************************************/
|
|
|
|
#include <sys/mman.h>
|
|
#include <unistd.h>
|
|
|
|
#include <villas/memory.hpp>
|
|
|
|
using namespace villas;
|
|
|
|
bool
|
|
HostRam::free(void* addr, size_t length)
|
|
{
|
|
return munmap(addr, length) == 0;
|
|
}
|
|
|
|
void*
|
|
HostRam::allocate(size_t length, int flags)
|
|
{
|
|
const int mmap_flags = flags | MAP_PRIVATE | MAP_ANONYMOUS | MAP_32BIT;
|
|
const int mmap_protection = PROT_READ | PROT_WRITE;
|
|
|
|
return mmap(nullptr, length, mmap_protection, mmap_flags, 0, 0);
|
|
}
|