mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 02:48:11 +00:00
b0e3f73375
Userspace programs can now open /dev/gui_events and read a stream of GUI_Event structs one at a time. I was stuck on a stupid problem where we'd reenter Scheduler::yield() due to having one of the has_data_available_for_reading() implementations using locks.
33 lines
801 B
C++
33 lines
801 B
C++
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
#include "Limits.h"
|
|
#include "FileDescriptor.h"
|
|
|
|
class Process;
|
|
|
|
class CharacterDevice {
|
|
public:
|
|
virtual ~CharacterDevice();
|
|
|
|
RetainPtr<FileDescriptor> open(int options);
|
|
|
|
virtual bool has_data_available_for_reading(Process&) const = 0;
|
|
|
|
virtual ssize_t read(byte* buffer, size_t bufferSize) = 0;
|
|
virtual ssize_t write(const byte* buffer, size_t bufferSize) = 0;
|
|
|
|
unsigned major() const { return m_major; }
|
|
unsigned minor() const { return m_minor; }
|
|
|
|
virtual bool is_tty() const { return false; }
|
|
|
|
virtual int ioctl(Process&, unsigned request, unsigned arg);
|
|
|
|
protected:
|
|
CharacterDevice(unsigned major, unsigned minor) : m_major(major), m_minor(minor) { }
|
|
|
|
private:
|
|
unsigned m_major { 0 };
|
|
unsigned m_minor { 0 };
|
|
};
|