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packet_stream: peek_packet() should be const

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This also fixes the wrong return type.

Fixes #1800
This commit is contained in:
Christian Helmuth 2015-12-15 14:42:47 +01:00
parent 6deb80f66d
commit c43bd472ac
1 changed files with 6 additions and 6 deletions
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8
repos/os/include/os/packet_stream.h
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@ -215,7 +215,7 @@ class Genode::Packet_descriptor_queue
/** /**
* Return current packet descriptor * Return current packet descriptor
*/ */
PACKET_DESCRIPTOR peek() PACKET_DESCRIPTOR peek() const
{ {
return _queue[_tail%QUEUE_SIZE]; return _queue[_tail%QUEUE_SIZE];
} }
@ -357,7 +357,7 @@ class Genode::Packet_descriptor_receiver
/* facility to send ready-to-transmit signals */ /* facility to send ready-to-transmit signals */
Genode::Signal_transmitter _tx_ready; Genode::Signal_transmitter _tx_ready;
Genode::Lock _rx_queue_lock; Genode::Lock mutable _rx_queue_lock;
RX_QUEUE *_rx_queue; RX_QUEUE *_rx_queue;
public: public:
@ -413,7 +413,7 @@ class Genode::Packet_descriptor_receiver
_tx_ready.submit(); _tx_ready.submit();
} }
typename RX_QUEUE::Packet_descriptor_queue rx_peek() typename RX_QUEUE::Packet_descriptor rx_peek() const
{ {
Genode::Lock::Guard lock_guard(_rx_queue_lock); Genode::Lock::Guard lock_guard(_rx_queue_lock);
return _rx_queue->peek(); return _rx_queue->peek();
@ -817,7 +817,7 @@ class Genode::Packet_stream_sink : private Packet_stream_base
* *
* If there is no packet, an invalid packet descriptor is returned. * If there is no packet, an invalid packet descriptor is returned.
*/ */
Packet_descriptor peek_packet() Packet_descriptor peek_packet() const
{ {
return _submit_receiver.rx_peek(); return _submit_receiver.rx_peek();
} }