.IX \f4flushq\fP(D3DK)
.IX STREAMS messages

NAME

flushq − flush messages on a queue

SYNOPSIS

#include <sys/stream.h>
void flushq(queue_t ∗q, int flag);

ARGUMENTS

qPointer to the queue to be flushed. 

flagDetermines messages to flush.  Valid flag values are:

FLUSHDATA
Flush only data messages (types M_DATA, M_DELAY, M_PROTO, and M_PCPROTO). 

FLUSHALL Flush all messages. 

DESCRIPTION

flushq frees messages on a queue by calling freemsg(D3DK) for each message.  If the queue’s count falls below the low water mark and someone wants to write to the queue, the nearest upstream or downstream service procedure is enabled. 

RETURN VALUE

None. 

LEVEL

Base or Interrupt. 

NOTES

Does not sleep. 

Driver-defined basic locks, read/write locks, and sleep locks may be held across calls to this function. 

SEE ALSO

put(D2DK), flushband(D3DK), freemsg(D3DK), putq(D3DK), queue(D4DK)

EXAMPLE

See put(D2DK) for an example of flushq. 

DDI/DKI  —  STREAMS