mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-22 13:37:22 +00:00
03622f61b0
This is not yet working, the client is yet to be updated to support decompressing this stream.
83 lines
1.9 KiB
C++
83 lines
1.9 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
|
|
*/
|
|
|
|
#define MULTIMEMCPY_THREADS 4
|
|
|
|
#include <windows.h>
|
|
#include <stdint.h>
|
|
|
|
#include "Util.h"
|
|
|
|
#pragma once
|
|
class MultiMemcpy
|
|
{
|
|
public:
|
|
MultiMemcpy();
|
|
~MultiMemcpy();
|
|
|
|
// preempt the copy and wake up the threads early
|
|
inline void Wake()
|
|
{
|
|
if (m_awake)
|
|
return;
|
|
|
|
for (int i = 0; i < MULTIMEMCPY_THREADS; ++i)
|
|
ReleaseSemaphore(m_workers[i].start, 1, NULL);
|
|
|
|
m_awake = true;
|
|
}
|
|
|
|
// abort a pre-empted copy
|
|
inline void Abort()
|
|
{
|
|
if (!m_awake)
|
|
return;
|
|
|
|
for (int i = 0; i < MULTIMEMCPY_THREADS; ++i)
|
|
m_workers[i].abort = true;
|
|
|
|
INTERLOCKED_OR8(&m_running, (1 << MULTIMEMCPY_THREADS) - 1);
|
|
while (m_running) {}
|
|
|
|
m_awake = false;
|
|
}
|
|
|
|
|
|
void Copy(void * dst, void * src, size_t size);
|
|
private:
|
|
struct Worker
|
|
{
|
|
unsigned int id;
|
|
volatile char *running;
|
|
bool abort;
|
|
|
|
HANDLE start;
|
|
HANDLE thread;
|
|
void * dst;
|
|
void * src;
|
|
size_t size;
|
|
};
|
|
|
|
bool m_awake;
|
|
volatile char m_running;
|
|
struct Worker m_workers[MULTIMEMCPY_THREADS];
|
|
static DWORD WINAPI WorkerFunction(LPVOID param);
|
|
};
|
|
|