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Copy pathSignalHandlers.cpp
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203 lines (160 loc) · 3.55 KB
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#include "SignalHandlers.h"
#include "System.h"
#ifdef WIN32
#include <Windows.h>
#include <thread>
static std::thread threadMessageLoop;
extern ::TCHAR myWndClassName[];
#endif
#include <csignal>
static HttpServer::Server *globalServerPtr = nullptr;
static void handlerSigTerm(const int sig)
{
if (globalServerPtr)
{
globalServerPtr->stopProcess();
}
}
static void handlerSigInt(const int sig)
{
if (globalServerPtr)
{
globalServerPtr->stopProcess();
}
}
static void handlerSigUsr1(const int sig)
{
if (globalServerPtr)
{
globalServerPtr->setRestart();
globalServerPtr->stopProcess();
}
}
static void handlerSigUsr2(const int sig)
{
if (globalServerPtr)
{
globalServerPtr->setUpdateModule();
globalServerPtr->unsetProcess();
globalServerPtr->setProcessQueue();
}
}
#ifdef WIN32
/**
* Note: PostQuitMessage(0)
* It doesn't work in case the program was launched and was
* attempted to finish under different remote sessions.
*/
static ::LRESULT CALLBACK WndProc(const ::HWND hWnd, const ::UINT message, const ::WPARAM wParam, const ::LPARAM lParam)
{
switch (message)
{
case SIGTERM:
{
handlerSigTerm(message);
::PostMessage(hWnd, WM_QUIT, 0, 0); // Fuck ::PostQuitMessage(0);
break;
}
case SIGINT:
{
handlerSigInt(message);
::PostMessage(hWnd, WM_QUIT, 0, 0); // Fuck ::PostQuitMessage(0);
break;
}
case SIGUSR1:
{
handlerSigUsr1(message);
break;
}
case SIGUSR2:
{
handlerSigUsr2(message);
break;
}
default:
{
return ::DefWindowProc(hWnd, message, wParam, lParam);
}
}
return 0;
}
static ::WPARAM mainMessageLoop(const ::HINSTANCE hInstance, HttpServer::Event *pCreatedWindow)
{
const ::HWND hWnd = ::CreateWindow(myWndClassName, nullptr, 0, CW_USEDEFAULT, CW_USEDEFAULT, 0, 0, nullptr, nullptr, hInstance, nullptr);
pCreatedWindow->notify();
if (0 == hWnd)
{
return 0;
}
::MSG msg;
while (::GetMessage(&msg, hWnd, 0, 0) )
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
return msg.wParam;
}
#ifdef _CONSOLE
static ::BOOL consoleSignalHandler(const ::DWORD ctrlType)
{
switch (ctrlType)
{
case CTRL_CLOSE_EVENT:
handlerSigTerm(ctrlType);
std::this_thread::sleep_for(std::chrono::seconds(60) );
return true;
case CTRL_C_EVENT:
handlerSigInt(ctrlType);
return true;
default:
return false;
}
}
#endif // _CONSOLE
#endif // WIN32
bool bindSignalHandlers(HttpServer::Server *server)
{
globalServerPtr = server;
#ifdef WIN32
#ifdef _CONSOLE
::SetConsoleCtrlHandler(reinterpret_cast<PHANDLER_ROUTINE>(consoleSignalHandler), true);
#elif
::signal(SIGINT, handlerSigInt);
::signal(SIGTERM, handlerSigTerm);
#endif // _CONSOLE
const ::HINSTANCE hInstance = ::GetModuleHandle(nullptr);
::WNDCLASSEX wcex = {};
wcex.cbSize = sizeof(::WNDCLASSEX);
wcex.lpfnWndProc = WndProc;
wcex.hInstance = hInstance;
wcex.lpszClassName = myWndClassName;
if (0 == ::RegisterClassEx(&wcex) )
{
return false;
}
HttpServer::Event createdWindow;
threadMessageLoop = std::thread(mainMessageLoop, hInstance, &createdWindow);
createdWindow.wait();
#elif POSIX
struct ::sigaction act = {};
act.sa_handler = handlerSigInt;
::sigaction(SIGINT, &act, nullptr);
act.sa_handler = handlerSigTerm;
::sigaction(SIGTERM, &act, nullptr);
act.sa_handler = handlerSigUsr1;
::sigaction(SIGUSR1, &act, nullptr);
act.sa_handler = handlerSigUsr2;
::sigaction(SIGUSR2, &act, nullptr);
#else
#error "Undefine platform"
#endif
return true;
}
void stopSignalHandlers()
{
#ifdef WIN32
System::sendSignal(::GetCurrentProcessId(), SIGINT);
threadMessageLoop.join();
#endif
}