Kiritow
bc189b4951
分离各SDL类的包装代码. 事件分发处理全部转移至Lua Init层. C层只提供获取事件的方法. 这样有助于提高性能，以及今后Coroutine scheduler的添加.
541 lines
9.9 KiB
C++
541 lines
9.9 KiB
C++
#include "LuaNetwork.h"
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// Using Win10 by default
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#define _WIN32_WINNT 0x0A00
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#ifdef _MSC_VER
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#pragma comment(lib,"ws2_32.lib")
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#endif
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#include <vector>
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#include <string>
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#include <set>
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#include <memory>
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#include <thread>
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#include <mutex>
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#include <condition_variable>
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#include <functional>
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#include "LuaCommon.h"
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using namespace std;
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int LuaWSError(lua_State* L, const string& prefix="")
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{
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char msgbuf[1024] = { 0 };
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int err = WSAGetLastError();
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FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, err, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT), msgbuf, 1024, NULL);
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if (!prefix.empty())
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{
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return luaL_error(L, "%s: %s", prefix.c_str(), msgbuf);
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}
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else
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{
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return luaL_error(L, msgbuf);
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}
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}
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// Bought from GSock.
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int DNSResolve(const std::string& HostName, std::vector<std::string>& _out_IPStrVec)
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{
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std::vector<std::string> vec;
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/// Use getaddrinfo instead
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struct addrinfo hints;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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struct addrinfo* result = nullptr;
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int ret = getaddrinfo(HostName.c_str(), NULL, &hints, &result);
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if (ret != 0)
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{
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return -1;
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}
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int cnt = 0;
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for (struct addrinfo* ptr = result; ptr != nullptr; ptr = ptr->ai_next)
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{
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cnt++;
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switch (ptr->ai_family)
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{
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case AF_INET:
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{
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sockaddr_in* paddr = (struct sockaddr_in*) (ptr->ai_addr);
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char ip_buff[64] = { 0 };
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const char* ptr = inet_ntop(AF_INET, &(paddr->sin_addr), ip_buff, 64);
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if (ptr != NULL)
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{
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vec.push_back(ptr);
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}
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break;
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}
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case AF_INET6:
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{
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sockaddr_in6* paddr = (struct sockaddr_in6*) (ptr->ai_addr);
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char ip_buff[128] = { 0 };
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const char* ptr = inet_ntop(AF_INET6, &(paddr->sin6_addr), ip_buff, 128);
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if (ptr != NULL)
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{
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vec.push_back(ptr);
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}
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break;
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}
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}// End of switch
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}
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freeaddrinfo(result);
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_out_IPStrVec = std::move(vec);
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// if(cnt!=(int)_out_IPStrVec.size()),
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// then (cnt-(int)_out_IPStrVec.size()) errors happend while calling inet_ntop().
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return cnt;
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}
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int DNSResolve(const std::string& HostName, std::string& _out_IPStr)
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{
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std::vector<std::string> vec;
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int ret = DNSResolve(HostName, vec);
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if (ret < 0)
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{
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return -1;
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}
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if (vec.empty())
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{
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return -2;
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}
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_out_IPStr = vec[0];
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return 0;
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}
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class ThreadPool
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{
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public:
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int maxSize;
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using TaskRunner = void (*)(void*);
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class TaskData
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{
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public:
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TaskRunner runner;
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void* data;
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mutex mLock;
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condition_variable cond;
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volatile int status; // -1 exit 0 new task 1 started 2 finished
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TaskData()
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{
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runner = nullptr;
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data = nullptr;
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status = 2;
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}
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};
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vector<TaskData> tasks;
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vector<thread> workers;
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static void task_runner(TaskData& td)
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{
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unique_lock<mutex> ulk(td.mLock);
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while (1)
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{
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td.cond.wait(ulk);
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if (td.status == -1)
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{
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break;
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}
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td.status = 1;
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if (td.runner)
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{
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td.runner(td.data);
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}
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td.status = 2;
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}
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}
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ThreadPool(int maxSize) : maxSize(maxSize), tasks(maxSize)
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{
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for (int i = 0; i < maxSize; i++)
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{
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workers.emplace_back(task_runner, ref(tasks[i]));
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}
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}
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~ThreadPool()
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{
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for (int i = 0; i < maxSize; i++)
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{
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TaskData& td = tasks[i];
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{
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unique_lock<mutex> ulk(td.mLock);
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td.status = -1;
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td.cond.notify_all();
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}
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workers[i].join();
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}
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}
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int addTask(TaskRunner runner, void* data)
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{
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for (int i = 0; i < maxSize; i++)
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{
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TaskData& td = tasks[i];
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if (td.status == 2)
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{
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unique_lock<mutex> ulk(td.mLock);
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td.runner = runner;
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td.data = data;
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td.status = 0;
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td.cond.notify_all();
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return i;
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}
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}
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return -1;
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}
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};
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// need_copy: false <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>data<74>й<EFBFBD>ϽȨ. true <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>dataû<61>й<EFBFBD>ϽȨ, <20><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>.
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void PushReadEvent(int fd, const char* data, int read_ret, bool need_copy = false)
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{
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SDL_Event e;
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e.type = SDL_USEREVENT;
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e.user.code = 1005;
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SocketEventData* p = new SocketEventData;
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p->fd = fd;
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p->ret = read_ret;
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if (read_ret <= 0)
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{
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p->errcode = WSAGetLastError();
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p->data = nullptr;
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if (!need_copy) delete[] data;
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}
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else
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{
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p->errcode = 0;
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if (need_copy)
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{
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char* s = new char[read_ret + 32];
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memcpy(s, data, read_ret);
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p->data = s;
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}
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else
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{
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p->data = data;
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}
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}
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SDL_PushEvent(&e);
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}
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void PushWriteEvent(int fd)
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{
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SDL_Event e;
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e.type = SDL_USEREVENT;
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e.user.code = 1006;
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SocketEventData* p = new SocketEventData;
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p->data = nullptr;
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p->fd = fd;
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p->ret = 0;
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p->errcode = 0;
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SDL_PushEvent(&e);
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}
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class SocketSelector
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{
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public:
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mutex mLock;
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condition_variable cond;
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volatile int status;
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set<int> wait_read;
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set<int> wait_write;
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int control_usec; // 1ms
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int control_usec_low_bound; // 0.5ms
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int control_usec_high_bound; // 1.5ms
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SocketSelector()
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{
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control_usec = 1000;
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control_usec_low_bound = 500;
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control_usec_high_bound = 1500;
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status = 1; // 0 Require stop, 1 Running
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}
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int run_once()
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{
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fd_set* pRead;
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fd_set* pWrite;
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fd_set fs_read;
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fd_set fs_write;
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timeval tm;
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tm.tv_sec = 0;
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tm.tv_usec = control_usec;
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{
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lock_guard<mutex> ulk(mLock);
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if (!wait_read.empty())
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{
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FD_ZERO(&fs_read);
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for (const int& fd : wait_read)
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{
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FD_SET(fd, &fs_read);
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}
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pRead = &fs_read;
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}
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if (!wait_write.empty())
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{
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FD_ZERO(&fs_write);
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for (const int& fd : wait_write)
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{
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FD_SET(fd, &fs_write);
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}
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pWrite = &fs_write;
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}
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}
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int ret = select(0, pRead, pWrite, nullptr, &tm); // <20><>û<EFBFBD>оͿյ<CDBF>һ<EFBFBD><D2BB>tick.
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if (ret <= 0)
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{
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return ret;
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}
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{
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lock_guard<mutex> ulk(mLock);
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for (const int& fd : wait_read)
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{
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if (FD_ISSET(fd, &fs_read))
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{
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char* buffer = new char[1024];
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int ret = recv(fd, buffer, 1024, 0);
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PushReadEvent(fd, buffer, ret);
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wait_read.erase(fd);
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}
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}
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for (const int& fd : wait_write)
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{
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if (FD_ISSET(fd, &fs_write))
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{
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PushWriteEvent(fd);
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wait_write.erase(fd);
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}
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}
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}
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return 1;
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}
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void run()
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{
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while (status)
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{
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run_once();
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}
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}
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void add_wait_read(int fd)
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{
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lock_guard<mutex> lk(mLock);
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wait_read.insert(fd);
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}
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void add_wait_write(int fd)
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{
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lock_guard<mutex> lk(mLock);
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wait_write.insert(fd);
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}
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};
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#define setfn(func, name) lua_pushcfunction(L, func);lua_setfield(L, -2, name)
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struct ClientSocket
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{
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int fd;
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int family;
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int socketType;
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static int close(lua_State* L)
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{
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check(L, { LUA_TUSERDATA }, { "clientsocket" });
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ClientSocket* p = (ClientSocket*)lua_touserdata(L, 1);
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if (p->fd != -1)
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{
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closesocket(p->fd);
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p->fd = -1;
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}
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return 0;
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}
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static int connect_ipv4(lua_State* L)
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{
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check(L, { LUA_TUSERDATA, LUA_TSTRING, LUA_TNUMBER }, { "clientsocket" });
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ClientSocket* p = (ClientSocket*)lua_touserdata(L, 1);
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const char* addr = lua_tostring(L, 2);
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int port = lua_tointeger(L, 3);
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string IPStr;
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if (DNSResolve(addr, IPStr) < 0)
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{
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return LuaWSError(L, "DNS resolve failed ("s + addr + ")");
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}
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struct sockaddr_in saddr;
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memset(&saddr, 0, sizeof(saddr));
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if (inet_pton(AF_INET, IPStr.c_str(), &(saddr.sin_addr.s_addr)) != 1)
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{
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return 0;
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}
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saddr.sin_port = htons(port);
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saddr.sin_family = AF_INET;
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int ret = connect(p->fd, (const sockaddr*)& saddr, sizeof(saddr));
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if (ret < 0)
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{
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return LuaWSError(L, "Connect failed. ("s + IPStr + ")");
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}
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return 0;
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}
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static int send(lua_State* L)
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{
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check(L, { LUA_TUSERDATA, LUA_TSTRING }, { "clientsocket" });
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ClientSocket* p = (ClientSocket*)lua_touserdata(L, 1);
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size_t dataLen = 0;
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const char* data = lua_tolstring(L, 2, &dataLen);
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size_t done = 0;
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while (done < dataLen)
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{
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int ret = ::send(p->fd, data + done, dataLen - done, 0);
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if (ret < 0)
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{
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return LuaWSError(L, "Send failed");
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}
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done += ret;
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}
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return 0;
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}
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static int recv(lua_State* L)
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{
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check(L, { LUA_TUSERDATA }, { "clientsocket" });
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ClientSocket* p = (ClientSocket*)lua_touserdata(L, 1);
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int size;
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if (lua_gettop(L) >= 2)
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{
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printf("%s\n", lua_typename(L, lua_type(L, 2)));
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size = lua_tointeger(L, 2);
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}
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else
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{
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size = 1024;
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}
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if (size > 0)
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{
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unique_ptr<char> data(new char[size]);
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int ret = ::recv(p->fd, data.get(), size, 0);
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if (ret < 0)
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{
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return LuaWSError(L, "Recv failed");
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}
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else if (ret == 0)
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{
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lua_pushnil(L);
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}
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else
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{
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lua_pushlstring(L, data.get(), ret);
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}
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return 1;
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}
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else
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{
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return luaL_error(L, "Bad argument #%d. integer above 0 expected, got %s", 2, lua_tostring(L, 2));
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}
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}
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static int create(lua_State* L)
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{
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int socketType = SOCK_STREAM;
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if (lua_gettop(L) >= 1)
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{
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if (lua_type(L, 1) == LUA_TSTRING)
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{
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if (strcmp(lua_tostring(L, 1), "tcp") == 0)
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{
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socketType = SOCK_STREAM;
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}
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else if (strcmp(lua_tostring(L, 1), "udp") == 0)
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{
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socketType = SOCK_DGRAM;
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}
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else
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{
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return luaL_error(L, "Invalid socket type: %s", lua_tostring(L, 1));
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}
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}
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lua_settop(L, 0);
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}
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int fd = socket(AF_INET, socketType, 0);
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if (fd == -1)
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{
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return LuaWSError(L);
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}
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ClientSocket* p = (ClientSocket*)lua_newuserdata(L, sizeof(ClientSocket));
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p->fd = fd;
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p->family = AF_INET;
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p->socketType = socketType;
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if (lua_getfield(L, LUA_REGISTRYINDEX, "__clientsocket_mt") != LUA_TTABLE)
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{
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lua_pop(L, 1);
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lua_newtable(L);
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// GC
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setfn(close, "__gc");
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// Fields
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lua_newtable(L);
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lua_pushstring(L, "clientsocket"); lua_setfield(L, -2, "type");
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setfn(close, "close");
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setfn(connect_ipv4, "connect");
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setfn(send, "send");
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setfn(recv, "recv");
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// Set __index of metatable.
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lua_setfield(L, -2, "__index");
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lua_pushvalue(L, -1);
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lua_setfield(L, LUA_REGISTRYINDEX, "__clientsocket_mt");
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}
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lua_setmetatable(L, -2);
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return 1;
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}
|
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};
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||
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int InitNetwork(lua_State* L)
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{
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WORD wd;
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WSAData wdt;
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wd = MAKEWORD(2, 2);
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int ret = WSAStartup(wd, &wdt);
|
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if (ret < 0)
|
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{
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return LuaWSError(L);
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}
|
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lua_pushcfunction(L, ClientSocket::create);
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lua_setglobal(L, "ClientSocket");
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return 0;
|
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}
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||
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void HandleNetworkEvent(lua_State* L, const SDL_Event& e)
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||
{
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||
}
|