帮助:已达到最大客户端数量-分段错误 [英] Help: Maximum number of clients reached - Segmentation fault
本文介绍了帮助:已达到最大客户端数量-分段错误的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想模拟许多按键事件.我使用XTestFakeKeyEvent
找到了一种解决方案,但是当我模拟210次以上时,我的程序将引发达到最大客户端数"分段错误.我不知道如何解决这个问题.
I want to simulate many key press events. I found a solution by using XTestFakeKeyEvent
, but when I simulate more than 210 times my program raises a "Maximum number of clients reached" segmentation fault. I don't known how to solve this problem.
我的代码在这里:
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/extensions/XTest.h>
#include <stdio.h>
#define PRESS_UP 0
#define PRESS_DOWN 1
#define PRESS_LEFT 2
#define PRESS_RIGHT 3
#define PRESS_ENTER 4
#define PRESS_ESC 5
#define PRESS_HOME 6
Display *display;
unsigned int keycode;
int press(int key){
display = XOpenDisplay(NULL);
if(key == PRESS_UP)
keycode = XKeysymToKeycode(display, XK_Up);
else if(key == PRESS_DOWN)
keycode = XKeysymToKeycode(display, XK_Down);
else if(key == PRESS_LEFT)
keycode = XKeysymToKeycode(display, XK_Left);
else if(key == PRESS_RIGHT)
keycode = XKeysymToKeycode(display, XK_Right);
else if(key == PRESS_ENTER)
keycode = XKeysymToKeycode(display, XK_Return);
else if(key == PRESS_ESC)
keycode = XKeysymToKeycode(display, XK_Escape);
else if(key == PRESS_HOME)
keycode = XKeysymToKeycode(display, XK_Home);
XTestFakeKeyEvent(display, keycode, True, 0);
XTestFakeKeyEvent(display, keycode, False, 0);
XFlush(display);
return 0;
}
int main(int argc, char *argv[]){
int count = 0;
while (count < 500){
press(PRESS_UP);
printf("count =%d\n" ,count);
count ++;
}
}
输出:
$ gcc -lXtst -lX11 Util_KeyPressSimulator.c
$ ./a.out
count =0
^[[Acount =1
^[[Acount =2
...
^[[Acount =208
^[[Acount =209
^[[Acount =210
^[[AMaximum number of clients reachedSegmentation fault
请帮助,谢谢.
推荐答案
您正在每次迭代执行XOpenDisplay
而没有匹配的XCloseDisplay
.考虑在循环之外在main()
中一次打开显示,然后在退出之前将其关闭.
You're doing an XOpenDisplay
per iteration without a matching XCloseDisplay
. Consider opening the display once, in main()
, outside the loop, and closing it before you exit.
这篇关于帮助:已达到最大客户端数量-分段错误的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文