suspendInterrupts
Disable or Enable User Interrupts
Description
Evaluates an expression with user interrupts disabled or enabled, and
returns the expression's value.
Usage
suspendInterrupts(expr)
allowInterrupts(expr)
Arguments
| expr |
an expression to evaluate. The expression is evaluated in the frame of the
caller.
|
Details
Typing control-C causes a user interrupt an executing computation, which normally stops the
executing computation and returns to the top-level console.
suspendInterrupts disables user interrupts while TERR is executing an
expression. Any user interrupts are totally ignored, so they do not
signal a condition and are not caught by
tryCatch.
Within a suspendInterrupts expression, allowInterrupts
re-enables user interrupts while executing a subexpression.
Object finalizer functions (see
reg.finalizer) are
evaluated with user interrupts suspended.
Value
returns the value of the expression.
See Also
Examples
suspendInterrupts({
print("can't interrupt this loop")
for(x in 1:10) {print(x);Sys.sleep(1)}
print("can interrupt this loop")
allowInterrupts(for(x in 1:10) {print(x);Sys.sleep(1)})
})