Preprocessor macro expanding to an expression
| Space | User/kernel |
| Context | Sync/async |
| May block | No |
| SPL | Any |
| Dynamic memory | No |
#include <SPAD/AC.H>
if (SPL_BUSY(spl)) ... This is the equivalent of SPLX_BUSY(SPL_X(spl)). See definition of these macros.
Returns non-zero if there is an AST or IORQ pending on or above spl.
The macro performs a compile-time check for correct argument.