linux系统编程之信号 test10_8.c
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#include<stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include<signal.h>
#include <string.h>
//#include <stdarg.h>
void intermithandler(int signumber);
void continuehandler(int signumber);
void terminatehandler(int signumber);
int main(void)
{
char buffer[100];
if(signal(SIGINT,&terminatehandler)==SIG_ERR)
{
printf("Could not register signal handler!\n");
}
if(signal(SIGTSTP,&terminatehandler)==SIG_ERR)
{
printf("Could not register signal handler!\n");
}
if(signal(SIGCONT,&continuehandler)==SIG_ERR)
{
printf("Couldn¡¯t register signal handler!\n");
}
if(signal(SIGTERM,&terminatehandler)==SIG_ERR)
{
printf("Could not register signal handler!\n");
}
printf("Pid of This Process:%6d.\n",getpid());
for( ; ; )
{
fgets(buffer,sizeof(buffer),stdin);
if(strcmp(buffer,"intermit\n")==0)
{
raise(SIGINT);//向进程自身发送信号
}
else if(strcmp(buffer,"stop\n")==0)
{
raise(SIGTSTP);
}
else if(strcmp(buffer,"continue\n")==0)
{
raise(SIGCONT);
}
else if(strcmp(buffer,"quit\n")==0)
{
raise(SIGTERM);
}
else
{
printf("Your input is: %s\n\n",buffer);
}
}
return 0;
}
void intermithandler(int signumber)
{
printf("signal %d.;\n",signumber);
}
void continuehandler(int sinnumber)
{
printf("Continue code.\n");
}
void terminatehandler(int signumber)
{
if (signumber == SIGINT)
printf("signal SIGINT.\n");
else if (signumber == SIGTERM)
printf("signal SIGTERM.\n");
else if (signumber == SIGTSTP)
printf("signal SIGTSTP.\n");
return;
}
#include <sys/types.h>
#include <unistd.h>
#include<signal.h>
#include <string.h>
//#include <stdarg.h>
void intermithandler(int signumber);
void continuehandler(int signumber);
void terminatehandler(int signumber);
int main(void)
{
char buffer[100];
if(signal(SIGINT,&terminatehandler)==SIG_ERR)
{
printf("Could not register signal handler!\n");
}
if(signal(SIGTSTP,&terminatehandler)==SIG_ERR)
{
printf("Could not register signal handler!\n");
}
if(signal(SIGCONT,&continuehandler)==SIG_ERR)
{
printf("Couldn¡¯t register signal handler!\n");
}
if(signal(SIGTERM,&terminatehandler)==SIG_ERR)
{
printf("Could not register signal handler!\n");
}
printf("Pid of This Process:%6d.\n",getpid());
for( ; ; )
{
fgets(buffer,sizeof(buffer),stdin);
if(strcmp(buffer,"intermit\n")==0)
{
raise(SIGINT);//向进程自身发送信号
}
else if(strcmp(buffer,"stop\n")==0)
{
raise(SIGTSTP);
}
else if(strcmp(buffer,"continue\n")==0)
{
raise(SIGCONT);
}
else if(strcmp(buffer,"quit\n")==0)
{
raise(SIGTERM);
}
else
{
printf("Your input is: %s\n\n",buffer);
}
}
return 0;
}
void intermithandler(int signumber)
{
printf("signal %d.;\n",signumber);
}
void continuehandler(int sinnumber)
{
printf("Continue code.\n");
}
void terminatehandler(int signumber)
{
if (signumber == SIGINT)
printf("signal SIGINT.\n");
else if (signumber == SIGTERM)
printf("signal SIGTERM.\n");
else if (signumber == SIGTSTP)
printf("signal SIGTSTP.\n");
return;
}
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