027d26cd5d
You're never gonna be right 100% of the time when guessing how much buffer space you need. This avoids having to make that type of decision in a bunch of cases. :^)
49 lines
887 B
C++
49 lines
887 B
C++
#include "MasterPTY.h"
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#include "SlavePTY.h"
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MasterPTY::MasterPTY(unsigned index)
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: CharacterDevice(10, index)
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, m_slave(*new SlavePTY(*this, index))
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, m_index(index)
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{
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}
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MasterPTY::~MasterPTY()
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{
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}
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String MasterPTY::pts_name() const
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{
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return String::format("/dev/pts/%u", m_index);
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}
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ssize_t MasterPTY::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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}
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ssize_t MasterPTY::write(Process&, const byte* buffer, size_t size)
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{
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m_slave.on_master_write(buffer, size);
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return size;
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}
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bool MasterPTY::can_read(Process&) const
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{
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return !m_buffer.is_empty();
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}
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bool MasterPTY::can_write(Process&) const
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{
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return true;
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}
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void MasterPTY::on_slave_write(const byte* data, size_t size)
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{
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m_buffer.write(data, size);
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}
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bool MasterPTY::can_write_from_slave() const
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{
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return m_buffer.bytes_in_write_buffer() < 4096;
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}
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