lock_free Kernel Service
Purpose
Frees the memory of a simple or complex lock.
Syntax
#include <sys/lock_def.h>
#include <sys/lock_alloc.h>void lock_free ( lock_addr)
void *lock_addr;
void *lock_addr;
Parameter
| Item | Description |
|---|---|
| lock_addr | Specifies the address of the lock word whose memory is to be freed. |
Description
The lock_free kernel service frees the memory of a simple or complex lock. The memory freed is the internal operating system memory which was allocated with the lock_alloc kernel service.
Note: It is only necessary to call the lock_free kernel
service when the memory that the corresponding lock was protecting
is released. For example, if you allocate memory for an i-node which
is to be protected by a lock, you must allocate and initialize the
lock before using it. The memory may be used with several i-nodes,
each taken from, and returned to, the free i-node pool; the lock_init
kernel service must be called each time this is done.The lock_free kernel
service must be called when the memory allocated for the inode is
finally freed.
Execution Environment
The lock_free kernel service can be called from the process environment only.
Return Values
The lock_free kernel service has no return values.