ACC Programmer's Reference Guide

Chapter 4 253
ZCOM C I/F Library Routines
ZPEEK (3X)
Threads
Considerations
This routine may be called from a multi-threaded application using the
POSIX (1003.1c) kernel threads API package. This routine has the
following characteristics when called by a multi-threaded application:
RETURN VALUE Routine zopen returns 0 if successful. Otherwise, a non-zero error code
is returned. See /opt/acc/include/zcom/zcomsys.h for the list of ZCOM
error codes and their meanings.
FILES
SEE ALSO zread(3X), zluopen(3X)
cancellation point Thread cancellation can occur when a thread calls this
routine.
async-cancel unsafe The calling thread’s cancelability type must be
PTHREAD_CANCEL_DEFERRED if cancellation is
enabled.
async-signal unsafe It cannot be called from a signal handler.
fork unsafe It cannot be called by a child process after fork(2) but
before exec(2).
/opt/acc/include/zcom/zcomsys.h ZCOM subsystem general include file,
containing data types, data structures,
constants, error codes, masks, etc. Note that
this must be the first include file before any
other ZCOM include files.
/opt/acc/include/zcom/zcomcall.h ZCOM routine function prototypes
(requires ANSI C (compilation).