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 );
- A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.
- A pointer to the the Open Control Block (typically a iofunc_ocb_t structure) that was created when the client opened the resource.
- The amount of memory that you want to allocate.
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.
Because the malloc() implementation uses signed, 32-bit integers to represent the size internally, you can't allocate more than 2 GB in a single allocation. If the size is greater than 2 GB, iofunc_lock_calloc() indicates an error of ENOMEM.
A pointer to a zeroed buffer that the POSIX layer uses for locks, or NULL if no memory could be allocated ( errno is set).
- Not enough memory.
- No error.
Last modified: 2013-12-23