/* Example of using alarm() */
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
int main(int argc, char *argv[]) {
sigset_t block;
sigemptyset(&block);
sigaddset(&block, SIGALRM);
sigprocmask(SIG_BLOCK, &block, NULL);
while (1) {
alarm(2);
printf("%d\n", time(NULL));
sigwaitinfo(&block, NULL);
}
return 0;
}
|
/* Example of using ualarm() */
#define _XOPEN_SOURCE 500
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
int main(int argc, char *argv[]) {
sigset_t block; sigemptyset(&block);
sigaddset(&block, SIGALRM);
sigprocmask(SIG_BLOCK, &block, NULL);
ualarm(500000, 500000);
while (1) {
printf("%d\n", time(NULL));
sigwaitinfo(&block, NULL);
} return 0;
}
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/* Example of using sigaction() to setup a signal handler with 3 arguments
* including siginfo_t.
*/
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
static void hdl (int sig, siginfo_t *siginfo, void *context)
{
printf ("Sending PID: %ld, UID: %ld\n",
(long)siginfo->si_pid, (long)siginfo->si_uid);
}
int main (int argc, char *argv[])
{
struct sigaction act;
memset (&act, '\0', sizeof(act));
/* Use the sa_sigaction field because the handles has two additional parameters */
act.sa_sigaction = &hdl;
/* The SA_SIGINFO flag tells sigaction() to use the sa_sigaction field, not sa_handler. */
act.sa_flags = SA_SIGINFO;
if (sigaction(SIGINT, &act, NULL) < 0) {
perror ("sigaction error");
return 1;
}
while (1)
sleep (10);
return 0;
}
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/* Example of using sigaction() to setup a signal handler
* with setting sa_handler
*/
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#define PROMPT "Do you want to terminate the process?"
char *prompt=PROMPT;
void ctrl_c_oper(int signo)
{
write(STDERR_FILENO,prompt,strlen(prompt));
}
int main()
{
struct sigaction act;
act.sa_handler=ctrl_c_oper;
sigemptyset(&act.sa_mask);
act.sa_flags=0;
if(sigaction(SIGINT,&act,NULL)<0)
{
fprintf(stderr,"Install Signal Action Error:%s\n\a",strerror(errno));
exit(1);
}
while(1);
}
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/*** File : example.c ***/
#include
<time.h>
double My_variable = 3.0;
int fact(int n) {
if (n <= 1) return 1;
else return n*fact(n-1);
}
int my_mod(int x, int y) {
return (x%y);
}
char *get_time()
{
time_t ltime;
time(<ime);
return ctime(<ime);
}
/*************************/
/*** example.i ***/
%module example
%{
/* Put header files here or function declarations like below */
extern double My_variable;
extern int fact(int n);
extern int my_mod(int x, int y);
extern char *get_time();
%}
extern double My_variable;
extern int fact(int n);
extern int my_mod(int x, int y);
extern char *get_time();
/******************/
Another example:/* File : example.c */
double My_variable = 3.0;
/* Compute factorial of n */
int fact(int n) {
if (n <= 1)
return 1;
else
return n*fact(n-1);
}
/* Compute n mod m */
int my_mod(int n, int m) {
return(n % m);
}
/* File : example.i */
%module example
%{
/* Put headers and other declarations here */
extern double My_variable;
extern int fact(int);
extern int my_mod(int n, int m);
%}
extern double My_variable;
extern int fact(int);
extern int my_mod(int n, int m);
For example:void add(double a, double b, double *result) { *result = a + b; } Please refer to this document. It will give you the nametype mapping in SWIG.http://www.swig.org/Doc1.3/Arguments.html
