iofunc_sync()

Indicate if synchronization is needed

Synopsis:

#include <sys/iofunc.h>

int iofunc_sync( resmgr_context_t* ctp, 
                 iofunc_ocb_t* ocb, 
                 int ioflag );

Arguments:

ctp
A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.
ocb
A pointer to the iofunc_ocb_t structure for the Open Control Block that was created when the client opened the resource.
ioflag
The operation being performed on the OCB:
  • _IO_FLAG_WR — writing.
  • _IO_FLAG_RD — reading.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The iofunc_sync() function indicates if some form of synchronization is needed.

Returns:

O_DSYNC
Data integrity is needed.
O_SYNC
File integrity is needed.
0
Synchronization isn't needed.

Classification:

QNX Neutrino

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes

Last modified: 2013-12-23

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