NAME

procset.h − Send a signal to one or more processes

SYNOPSIS

typedef struct procset {
        idop_t  ∗p_op;
        idtype_t p_lidtype;
        id_t     p_lid;
        idtype_t p_ridtype;
        id_t     p_rid;
} procset_t;

DESCRIPTION

The contents of the <procset.h> structure define a set of target processes based on logical operations performed on the two sets of potential target processes indicated by the two pairs of id + type parameters, which designate "left" and "right" groups of processes.  The logical operations supported are the union, intersection, difference, and exclusive OR of the left and right groups. 

The p_lid and p_lidtype members define one set of potential target processes, the "left" set.  The p_rid and p_ridtype members define the "right" set of potential target processes.  These parameters work together to select the target process or processes. 

The value of p_op is used to combine these two groups into the final group of actual target processes:

POP_DIFF
Specifies that the target group of processes consist of the remaining processes in the left set that are not common to the right set.

POP_AND
Specifies that the target group consists of those processes that are in both sets.

POP_ORSpecifies that the target group consists of those processes that are in either set, or in both sets. 

POP_XORSpecifies that the target group consists of those processes that are in either set, but not in both sets. 

RELATED INFORMATION

Functions: priocntlset(2), sigsend(2). 

Files: signal.h(4).