Process Information

Data Structures
struct	_proc_info
	Structure containing the process information. More...

Typedefs
typedef struct _proc_info	amxp_proc_info_t
	Structure containing the process information. More...

Functions
void	amxp_proci_free_it (amxc_llist_it_t *it)
	Delete a amxp_proc_info_t by it is linked list iterator. More...
int	amxp_proci_findf (amxc_llist_t *result, const char *filter,...)
	Build a linked list of running processes. More...

Detailed Description

Process information

Typedef Documentation

amxp_proc_info_t

typedef struct _proc_info amxp_proc_info_t

Structure containing the process information.

Function Documentation

amxp_proci_findf()

int amxp_proci_findf	(	amxc_llist_t *	result,
		const char *	filter,
			...
	)

Build a linked list of running processes.

This function scans /proc/<pid>/ and allocates a amxp_proc_info_t structure for each found process.

Optionally a expression filter can be provided. The fields allowed in the filter are:

• name
• parent_pid or ppid
• state

Parameters

result	pointer to a linked list, found processes will be added to this list
filter	an expression that is used to filter the found processes.

Returns

0 when successful, otherwise an error code

Definition at line 219 of file amxp_proc_info.c.

                                                                    {
    int retval = -1;
    amxc_string_t expression;
    va_list args;
    amxp_expr_t expr;
 
    amxc_string_init(&expression, 0);
    when_null(result, exit);
 
    if(filter != NULL) {
        va_start(args, filter);
        amxc_string_vsetf(&expression, filter, args);
        va_end(args);
        when_failed(amxp_expr_init(&expr, amxc_string_get(&expression, 0)), exit);
    }
 
 
    retval = amxp_proci_scan_proc(result, filter == NULL ? NULL : &expr);
 
exit:
    if(filter != NULL) {
        amxp_expr_clean(&expr);
    }
    amxc_string_clean(&expression);
    return retval;
}

amxp_proci_free_it()

void amxp_proci_free_it

(

amxc_llist_it_t *

it

)

Delete a amxp_proc_info_t by it is linked list iterator.

Frees the structure and its content.

This function is typically used as a callback function when cleaning a linked list of amxp_proc_info_t structures.

Parameters

it	the linked list iterator of a amxp_proc_info_t instance

Definition at line 213 of file amxp_proc_info.c.

                                             {
    amxp_proc_info_t* pi = amxc_container_of(it, amxp_proc_info_t, it);
    free(pi->name);
    free(pi);
}