POOL_WALK_COMPONENTS(3POOL)POOL_WALK_COMPONENTS(3POOL)NAME
pool_walk_components, pool_walk_pools, pool_walk_resources - walk
objects within resource pool configurations
SYNOPSIS
cc [ flag... ] file... -lpool [ library... ]
#include <pool.h>
int pool_walk_components(pool_conf_t *conf,
pool_resource_t *resource, void *arg,
int (*callback)(pool_conf_t *, pool_resource_t *, void *));
int pool_walk_pools(pool_conf_t *conf, void *arg,
int (*callback)(pool_conf_t *, pool_component_t *, void *));
int pool_walk_resources(pool_conf_t *conf, pool_t *pool,
void *arg, int (*callback)(pool_conf_t *,
pool_component_t *, void *));
DESCRIPTION
The walker functions provided with libpool(3LIB) visit each associated
entity of the given type, and call the caller-provided callback func‐
tion with a user-provided additional opaque argument. There is no
implied order of visiting nodes in the walk. If the callback function
returns a non-zero value at any of the nodes, the walk is terminated,
and an error value of -1 returned. The conf argument for each function
refers to the target configuration to which the operation applies.
The pool_walk_components() function invokes callback on all components
contained in the resource.
The pool_walk_pools() function invokes callback on all pools defined in
the configuration.
The pool_walk_resources() function invokes callback function on all
resources associated with pool.
RETURN VALUES
Upon successful completion of the walk, these functions return 0. Oth‐
erwise -1 is returned and pool_error(3POOL) returns the pool-specific
error value.
ERRORS
These functions will fail if:
POE_BADPARAM
The supplied configuration's status is not
POF_VALID.
POE_INVALID_CONF
The configuration is invalid.
POE_SYSTEM
A system error has occurred. Check the system error
code for more details.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│CSI │ Enabled │
├────────────────────┼─────────────────┤
│Interface Stability │ Unstable │
├────────────────────┼─────────────────┤
│MT-Level │ Safe │
└────────────────────┴─────────────────┘
SEE ALSOlibpool(3LIB), pool_error(3POOL), attributes(5)
Jul 18, 2005 POOL_WALK_COMPONENTS(3POOL)