Macros¶

#define likely(x)
#define unlikely(x)

#define likely( x)¶

Value:

__builtin_expect(!!(x), 1)

Check if a branch is likely to be taken.

This compiler builtin allows the developer to indicate if a branch is likely to be taken. Example:

if (likely(x > 1)) do_stuff();

Definition at line 26 of file rte_branch_prediction.h.

#define unlikely( x)¶

Value:

__builtin_expect(!!(x), 0)

Check if a branch is unlikely to be taken.

This compiler builtin allows the developer to indicate if a branch is unlikely to be taken. Example:

if (unlikely(x < 1)) do_stuff();

Definition at line 43 of file rte_branch_prediction.h.