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https://github.com/RGBCube/serenity
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Use a CircularQueue for the PS/2 mouse driver.
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parent
8ad2dfb6e1
commit
09ba129bcf
2 changed files with 12 additions and 5 deletions
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@ -44,7 +44,9 @@ void PS2MouseDevice::handle_irq()
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(m_data[0] & 2) ? "Right" : ""
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);
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#endif
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m_buffer.write((const byte*)m_data, 3);
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m_queue.enqueue(m_data[0]);
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m_queue.enqueue(m_data[1]);
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m_queue.enqueue(m_data[2]);
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break;
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}
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}
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@ -118,12 +120,18 @@ byte PS2MouseDevice::mouse_read()
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bool PS2MouseDevice::can_read(Process&) const
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{
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return !m_buffer.is_empty();
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return !m_queue.is_empty();
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}
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ssize_t PS2MouseDevice::read(Process&, byte* buffer, size_t size)
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{
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return m_buffer.read(buffer, size);
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ssize_t nread = 0;
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while ((size_t)nread < size) {
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if (m_queue.is_empty())
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break;
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buffer[nread++] = m_queue.dequeue();
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}
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return nread;
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}
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ssize_t PS2MouseDevice::write(Process&, const byte*, size_t)
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