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Allocate memory to lock structures
#include <sys/iofunc.h>
iofunc_lock_list_t *iofunc_lock_calloc
( resmgr_context_t *ctp,
IOFUNC_OCB_T *ocb,
size_t size );
- 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 the Open Control Block (typically a
iofunc_ocb_t
structure) that was created when the client opened the resource.
- size
- The amount of memory that you want to allocate.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The function iofunc_lock_calloc() is used by
iofunc_lock()
to allocate memory to lock structures.
A pointer to a zeroed buffer that the POSIX layer uses for locks,
or NULL if no memory could be allocated.
QNX Neutrino
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
iofunc_lock(),
iofunc_lock_free()
Writing a Resource Manager
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