iofunc_close_ocb_default()
QNX SDP8.0C Library ReferenceAPIDeveloper
Return the memory allocated for an OCB
Synopsis:
#include <sys/iofunc.h>
int iofunc_close_ocb_default( resmgr_context_t* ctp,
void* reserved,
iofunc_ocb_t* ocb );
Arguments:
- ctp
- A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.
- reserved
- This argument must be passed as NULL.
- ocb
- A pointer to the iofunc_ocb_t structure for the Open Control Block that was created when the client opened the resource.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The iofunc_close_ocb_default() function detaches the OCB specified by ocb, and releases the memory associated with it.
You can place this function directly into the resmgr_io_funcs_t table passed as the io_funcs argument to resmgr_attach(), at the close_ocb position, or you can call iofunc_func_init() to initialize all of the functions to their default values.
Note:
This function assumes that ocb points to an iofunc_ocb_t.
If you encapsulate iofunc_ocb_t in your own OCB, it
must be the first field of your OCB; otherwise, you can't call this function.
If you provide an ocb_free() function in the
mount structure, it's called at this point. This means
that at least the iofunc_ocb_t portion of your OCB is no longer
valid after iofunc_close_ocb() returns.
The iofunc_close_ocb_default() function calls iofunc_close_ocb() to do the actual work.
Returns:
- EOK
- Success.
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | Yes |
| Thread | Yes |
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