notes/signal_test2.c at master · ysan/notes

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#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <errno.h>

#include <signal.h>

static sigset_t gnSigset;

void handler( int nSigno )

{

printf( "Interrupt occurred. [%s]\n", strsignal( nSigno ) );

return;

}

void _DI( void )

{

sigprocmask( SIG_BLOCK, &gnSigset, NULL);

}

void _EI( void )

{

sigprocmask( SIG_UNBLOCK, &gnSigset, NULL);

}

int main()

{

unsigned char szBuff[128];

struct sigaction strSigact;

sigemptyset( &gnSigset );

sigaddset( &gnSigset, SIGRTMIN );

memset( &strSigact, 0x00, sizeof(strSigact) );

strSigact.sa_handler = handler;

strSigact.sa_mask = gnSigset;

sigaction( SIGRTMIN, &strSigact, NULL );

while(1){

_EI();

read( STDIN_FILENO, szBuff, sizeof(szBuff) );

_DI();

printf( "return read()...\n" );

sleep(5);

}

exit( EXIT_SUCCESS );

}