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Tear out or duplicate what's unique for WindowServer from Widgets.

This turned into a huge refactoring that somehow also includes
making locks recursive/reentrant.
This commit is contained in:
Andreas Kling 2019-01-16 16:03:50 +01:00
parent e655aebd70
commit f7ca6d254d
30 changed files with 757 additions and 308 deletions

38
Kernel/GUIEventDevice.cpp Normal file
View file

@ -0,0 +1,38 @@
#include "GUIEventDevice.h"
#include <Kernel/Process.h>
#include <AK/Lock.h>
#include <LibC/errno_numbers.h>
//#define GUIEVENTDEVICE_DEBUG
GUIEventDevice::GUIEventDevice()
: CharacterDevice(66, 1)
{
}
GUIEventDevice::~GUIEventDevice()
{
}
bool GUIEventDevice::can_read(Process& process) const
{
return !process.gui_events().is_empty();
}
ssize_t GUIEventDevice::read(Process& process, byte* buffer, size_t size)
{
#ifdef GUIEVENTDEVICE_DEBUG
dbgprintf("GUIEventDevice::read(): %s<%u>, size=%u, sizeof(GUI_Event)=%u\n", process.name().characters(), process.pid(), size, sizeof(GUI_Event));
#endif
if (process.gui_events().is_empty())
return 0;
LOCKER(process.gui_events_lock());
ASSERT(size == sizeof(GUI_Event));
*reinterpret_cast<GUI_Event*>(buffer) = process.gui_events().take_first();
return size;
}
ssize_t GUIEventDevice::write(Process&, const byte*, size_t)
{
return -EINVAL;
}