AuroraRuntime/Source/Processes/AuProcess.Win32.cpp

194 lines
4.9 KiB
C++

/***
Copyright (C) 2021-2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.
File: AuProcess.Win32.cpp
Date: 2022-1-29
Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include "AuProcess.Win32.hpp"
#include <shellapi.h>
#include <tlhelp32.h>
#include <process.h>
namespace Aurora::Processes
{
static HANDLE gLeaderJob = INVALID_HANDLE_VALUE;
void InitWin32()
{
JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli {};
gLeaderJob = CreateJobObject(NULL, NULL);
if (!gLeaderJob)
{
SysPushErrorArg("CreateJobObject error");
return;
}
jeli.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
if (!SetInformationJobObject(gLeaderJob, JobObjectExtendedLimitInformation, &jeli, sizeof(jeli)))
{
SysPushErrorGen("SetInformationJobObject error");
}
}
void DeinitWin32()
{
AuWin32CloseHandle(gLeaderJob);
}
void AssignJobWorker(HANDLE handle)
{
if (gLeaderJob)
{
if (!AssignProcessToJobObject(gLeaderJob, handle))
{
SysPushErrorGen("Could not AssignProcessToObject");
}
}
}
static bool HasWin32ProcessExited(HANDLE handle)
{
DWORD exitCode;
if (!GetExitCodeProcess(handle, &exitCode))
{
return true;
}
return exitCode != STILL_ACTIVE;
}
struct Hack
{
HANDLE base;
AuUInt32 count;
};
static BOOL CALLBACK TermWinHandleWin32Thread(HWND handle, LPARAM a)
{
DWORD windowpid;
auto context = reinterpret_cast<Hack *>(a);
auto pid = GetProcessId(context->base);
GetWindowThreadProcessId(handle, &windowpid);
if (pid && pid == windowpid)
{
SendMessageA(handle, WM_CLOSE, 0, 0);
context->count++;
}
return true;
}
static bool SendExtermianteWinloopCloseMessages(HANDLE handle)
{
THREADENTRY32 te{};
HANDLE h{};
Hack hello;
hello.count = 0;
hello.base = handle;
te.dwSize = sizeof(te);
te.th32OwnerProcessID = GetProcessId(handle);
if (!te.th32OwnerProcessID)
{
return false;
}
h = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, GetProcessId(handle));
if (h == INVALID_HANDLE_VALUE)
{
return false;
}
if (Thread32First(h, &te))
{
do
{
if (te.dwSize >= FIELD_OFFSET(THREADENTRY32, th32OwnerProcessID) +
sizeof(te.th32OwnerProcessID))
{
EnumThreadWindows(te.th32ThreadID, TermWinHandleWin32Thread, reinterpret_cast<LPARAM>(&hello));
}
te.dwSize = sizeof(te);
} while (Thread32Next(h, &te));
}
CloseHandle(h);
if (!hello.count)
{
return false;
}
return true;
}
static bool SendControlCEquiv(HANDLE handle)
{
auto cwnd = GetConsoleWindow();
if (!(AttachConsole(GetProcessId(handle))))
{
return false;
}
if (cwnd == GetConsoleWindow())
{
FreeConsole();
return false;
}
if (SetConsoleCtrlHandler({}, true))
{
GenerateConsoleCtrlEvent(CTRL_C_EVENT, 0);
SysAssert(FreeConsole(), "Couldn't pop off zombie process console");
// other people use 2k ms, their code is over a decade or so old tho
// this is evil; however, since we are calling free, the os should be
// smart enough to not terminate us now. id be nice if msft made that
// defined behaviour. for now, we have to sleep to make sure we dont
// eat items in the kernels/conhosts/somethings pending work queue
Sleep(750);
}
else
{
SysAssert(FreeConsole(), "Couldn't pop off zombie process console");
return false;
}
if (!SetConsoleCtrlHandler({}, false))
{
SysPushErrorHAL("Couldn't swap control+c handler -> wont accept control termination on exit");
}
return true;
}
static bool Wait2500OrUntilClose(HANDLE handle)
{
return Threading::YieldPoll(true, 2500, [=]()
{
return !HasWin32ProcessExited(handle);
});
}
bool SendExitSignal(HANDLE handle)
{
if (handle == INVALID_HANDLE_VALUE)
{
return false;
}
if (!(SendControlCEquiv(handle) // send GenerateConsoleCtrlEvent
|| SendExtermianteWinloopCloseMessages(handle))) // send WM_CLOSE
{
return false;
}
return Wait2500OrUntilClose(handle);
}
}