Kayne Ruse
110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
/* Copyright: (c) Kayne Ruse 2013
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "network_queue.hpp"
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#include "service_locator.hpp"
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#include "udp_network_utility.hpp"
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#include "SDL/SDL_thread.h"
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#include <stdexcept>
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#include <deque>
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static SDL_sem* lock = SDL_CreateSemaphore(1);
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static SDL_Thread* queueThread = nullptr;
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static std::deque<Packet> queue;
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static bool running = false;
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static int networkQueue(void*) {
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UDPNetworkUtility* netUtil = ServiceLocator<UDPNetworkUtility>::Get();
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while(running) {
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SDL_SemWait(lock);
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while(netUtil->Receive()) {
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Packet p;
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memcpy(&p, netUtil->GetInData(), sizeof(Packet));
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p.meta.address = netUtil->GetInPacket()->address;
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queue.push_back(p);
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}
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SDL_SemPost(lock);
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SDL_Delay(10);
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}
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return 0;
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}
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void beginQueueThread() {
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if (running) {
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return;
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}
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running = true;
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if (!(queueThread = SDL_CreateThread(networkQueue, nullptr))) {
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throw(std::runtime_error("Failed to create the network thread"));
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}
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}
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void endQueueThread() {
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if (!running) {
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return;
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}
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running = false;
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SDL_WaitThread(queueThread, nullptr);
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queueThread = nullptr;
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}
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void killQueueThread() {
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if (!running) {
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return;
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}
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running = false;
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SDL_KillThread(queueThread);
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queueThread = nullptr;
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}
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Packet peekNetworkPacket() {
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SDL_SemWait(lock);
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Packet p;
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if (queue.size() > 0) {
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Packet p = queue[0];
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}
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SDL_SemPost(lock);
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return p;
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}
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Packet popNetworkPacket() {
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SDL_SemWait(lock);
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Packet p;
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if (queue.size() > 0) {
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p = queue[0];
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queue.pop_front();
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}
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SDL_SemPost(lock);
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return p;
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}
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void flushNetworkQueue() {
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UDPNetworkUtility* netUtil = ServiceLocator<UDPNetworkUtility>::Get();
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SDL_SemWait(lock);
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while(netUtil->Receive());
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queue.clear();
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SDL_SemPost(lock);
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} |