SCO OpenServer 5
testb(D3str)
testb --
test for an available buffer
Synopsis (Not in DDI)
#include <sys/stream.h>
int testb(int size, unsigned int pri);
Description
The testb routine checks for the availability of a message
buffer of size size at priority pri (see
``Notes'' in the
allocb(D3str)
manual page) without actually retrieving the buffer.
Return values
testb returns 1 if the buffer is available and 0 if no
buffer is available.
A successful return value from testb does not guarantee
that a subsequent allocb call will succeed (for example,
in the case of an interrupt routine taking buffers).
Usage
Context and synchronization
context
Hardware applicability
All
Version applicability
oddi:
1, 2, 2mp, 3, 3mp, 4, 4mp, 5, 5mp, 6, 6mp
References
allocb(D3str),
bufcall(D3str),
freeb(D3str)
19 June 2005
© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005