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Use a CircularQueue for the PS/2 mouse driver.

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This commit is contained in:
Andreas Kling 2019-01-16 01:52:39 +01:00
parent 8ad2dfb6e1
commit 09ba129bcf
2 changed files with 12 additions and 5 deletions
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14
Kernel/PS2MouseDevice.cpp
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@ -44,7 +44,9 @@ void PS2MouseDevice::handle_irq()
(m_data[0] & 2) ? "Right" : ""
);
#endif
m_buffer.write((const byte*)m_data, 3);
m_queue.enqueue(m_data[0]);
m_queue.enqueue(m_data[1]);
m_queue.enqueue(m_data[2]);
break;
}
}
@ -118,12 +120,18 @@ byte PS2MouseDevice::mouse_read()
bool PS2MouseDevice::can_read(Process&) const
{
return !m_buffer.is_empty();
return !m_queue.is_empty();
}
ssize_t PS2MouseDevice::read(Process&, byte* buffer, size_t size)
{
return m_buffer.read(buffer, size);
ssize_t nread = 0;
while ((size_t)nread < size) {
if (m_queue.is_empty())
break;
buffer[nread++] = m_queue.dequeue();
}
return nread;
}
ssize_t PS2MouseDevice::write(Process&, const byte*, size_t)