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ZCOM C I/F Library Routines

ZPEEK (3X)

Chapter 4 275

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).

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HP Advanced Communications Controllers (ACC) Uživatelská příručka Strana 275