mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-12-23 22:31:46 +00:00
76 lines
No EOL
2.1 KiB
C++
76 lines
No EOL
2.1 KiB
C++
/*
|
|
Looking Glass - KVM FrameRelay (KVMFR) Client
|
|
Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
|
|
https://looking-glass.hostfission.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 2 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, write to the Free Software Foundation, Inc., 59 Temple
|
|
Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "MultiMemcpy.h"
|
|
#include "Util.h"
|
|
#include "common/memcpySSE.h"
|
|
|
|
MultiMemcpy::MultiMemcpy()
|
|
{
|
|
for (int i = 0; i < MULTIMEMCPY_THREADS; ++i)
|
|
{
|
|
m_workers[i].id = (1 << i);
|
|
m_workers[i].running = &m_running;
|
|
m_workers[i].start = CreateSemaphore(NULL, 0, 1, NULL);
|
|
|
|
m_workers[i].thread = CreateThread(0, 0, WorkerFunction, &m_workers[i], 0, NULL);
|
|
}
|
|
}
|
|
|
|
MultiMemcpy::~MultiMemcpy()
|
|
{
|
|
for(int i = 0; i < MULTIMEMCPY_THREADS; ++i)
|
|
{
|
|
TerminateThread(m_workers[i].thread, 0);
|
|
CloseHandle(m_workers[i].start);
|
|
}
|
|
}
|
|
|
|
void MultiMemcpy::Copy(void * dst, void * src, size_t size)
|
|
{
|
|
if (!m_awake)
|
|
Wake();
|
|
|
|
const size_t block = size / MULTIMEMCPY_THREADS;
|
|
for (int i = 0; i < MULTIMEMCPY_THREADS; ++i)
|
|
{
|
|
m_workers[i].dst = (uint8_t *)dst + i * block;
|
|
m_workers[i].src = (uint8_t *)src + i * block;
|
|
m_workers[i].size = (i + 1) * block - i * block;
|
|
}
|
|
|
|
INTERLOCKED_OR8(&m_running, (1 << MULTIMEMCPY_THREADS) - 1);
|
|
while(m_running) {}
|
|
|
|
m_awake = false;
|
|
}
|
|
|
|
DWORD WINAPI MultiMemcpy::WorkerFunction(LPVOID param)
|
|
{
|
|
struct Worker * w = (struct Worker *)param;
|
|
|
|
for(;;)
|
|
{
|
|
WaitForSingleObject(w->start, INFINITE);
|
|
while(!(*w->running & w->id)) {}
|
|
|
|
memcpySSE(w->dst, w->src, w->size);
|
|
INTERLOCKED_AND8(w->running, ~w->id);
|
|
}
|
|
} |