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PID 的代码
sigchldwaitpid.c
#include "unp.h"
void
sig_chld(int signo)
{
pid_t pid;
int stat;
while ( (pid = waitpid(-1, &stat, WNOHANG)) > 0)
printf("child %d terminated\n", pid);
return;
}
tellwait1.c
#include "apue.h"
static void charatatime(char *);
int
main(void)
{
pid_t pid;
if ((pid = fork()) < 0) {
err_sys("fork error");
} else if (pid == 0) {
charatatime("output from child\n");
}
test1.c
#include "apue.h"
int
main(void)
{
pid_t pid;
if ((pid = fork()) < 0)
err_sys("fork error");
else if (pid != 0) { /* parent */
sleep(2);
exit(2); /* terminate with exit status 2 */
}
syskill.c
/* connector for kill */
#include
int
kill (pid, sig)
int pid;
int sig;
{
#ifdef REENTRANT_SYSCALLS_PROVIDED
return _kill_r (_REENT, pid, sig);
#else
return _kill (pid, sig);
syskill.c
/* connector for kill */
#include
int
kill (pid, sig)
int pid;
int sig;
{
#ifdef REENTRANT_SYSCALLS_PROVIDED
return _kill_r (_REENT, pid, sig);
#else
return _kill (pid, sig);
pidmotor.c
/*------------------------------------------------------------------*-
PID_Motor.c (v1.01)
------------------------------------------------------------------
Small library for PID con
.cvsignore
kinematics
kinematics.tex
pid_theory
pid_theory.tex
setpgid.c
#include "lib.h"
#include
#include
#include
#include "sys9.h"
int
setpgid(pid_t pid, pid_t pgid)
{
int n, f;
char buf[50], fname[30];
if(pid == 0)
pid = getpid();
example3_14.m
%编写返回差值的.m文件
function F = tracklsq(pid,a1,a2)
% 设置PID参数
Kp = pid(1);
Ki = pid(2);
Kd = pid(3);
% 返回输出值
opt = simset('solver','ode5','SrcWorkspace','Current');
[tout,xout,yout] = sim('optsim',[
example3_14.m
%编写返回差值的.m文件
function F = tracklsq(pid,a1,a2)
% 设置PID参数
Kp = pid(1);
Ki = pid(2);
Kd = pid(3);
% 返回输出值
opt = simset('solver','ode5','SrcWorkspace','Current');
[tout,xout,yout] = sim('optsim',[