Signaler::Block()

Cause interrupt signals from the user to be ignored until a subsequent call to Signaler::Catch().

Virtual?

No

  

Class

Signaler

 

Arguments

None

  

Returns

void

 

Notes

Block() does not actually block the signals, but causes the process to ignore them.

For portability reasons, Block() and Catch() use the BSD/ANSI C signal(2) function rather than the POSIX sigaction().

See also

Signaler::Catch() Signaler::OnIntr()

Example

#include <unistd.h>  // for sleep()
#include <stdhdrs.h>
#include <strbuf.h>
#include <signaler.h>

int main( int argc, char **argv )
{
    // Block ^C
    printf( "For the next 5 seconds, ^C will be ignored\n" );
    signaler.Block();
    sleep( 5 );

    printf( "Enabling ^C again\n" );
    signaler.Catch();
    for ( ; ; )
        sleep( 60 );
    exit( 0 );
}