ZCOM C I/F Library Routines

 

 

 

ZPEEK (3X)

Threads

This routine may be called from a multi-threaded application using the

Considerations

POSIX (1003.1c) kernel threads API package. This routine has the

 

following characteristics when called by a multi-threaded application:

 

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).

RETURN VALUE

Routine zopen returns 0 if successful. Otherwise, a non-zeroerror code

 

is returned. See /opt/acc/include/zcom/zcomsys.h for the list of ZCOM

 

error codes and their meanings.

 

FILES

 

 

 

 

/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).

SEE ALSO

zread(3X), zluopen(3X)

 

 

Chapter 4

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