Interface CALL_IORQ_CANCELABLE_EXPR

Preprocessor macro expanding to a command

#include <SPAD/AC.H>

Description

This macro has the same functionality as CALL_IORQ_CANCELABLE, except that handler may be an expression. When handler is a simple function, use CALL_IORQ_CANCELABLE — it generates faster code.

Arguments

• iorq — See definition of CALL_IORQ_CANCELABLE.
• handler — A poitner with type IO_STUB. It points to a function declared with DECL_IOCALL.
  Note: The expression itself is evaluated at SPL_TOP, so all rules for this SPL apply. It shouldn't contain a loop and it can only call functions that don't block and that can be called on SPL_TOP. If you need more complex expression, evaluate it outside CALL_IORQ_EXPR, store it to a variable and pass the variable to CALL_IORQ_EXPR.
• chained_iorq — See definition of CALL_IORQ_CANCELABLE.

See also

CALL_IORQ, IO_STUB