signal( SIGINT, SigIntHandler ) signal 的第1个参数signum表示要捕捉的信号,第2个参数是个函数指针,表示要对该信号进行捕捉的函数,该参数也可以是SIG_DEF(表示交由系统缺省处理,相当于白注册了)或SIG_IGN(表示忽略掉该信号而不做任何处理)。signal如果调用成功,返回以前该信号的处理函数的地址,否则返回 SIG_ERR...
(signum=2) terminate called after throwing an instance of 'rclcpp::exceptions::RCLError' what(): failed to create guard condition: the given context is not valid, either rcl_init() was not called or rcl_shutdown() was called., at /tmp/makepkg/ros2-jazzy-base/src/ros2/src/ros2/rcl...
实例 #include <iostream> #include <csignal> #include <unistd.h> using namespace std; void signalHandler( int signum ) { cout << "Interrupt signal (" << signum << ") received.\n"; // 清理并关闭 // 终止程序 exit(signum); } int main () { int i = 0; // 注册信号 SIGINT 和...
typename...Args>voidaddSignal(Signal&sigset,Args...args){(sigaddset(&sigset,args),...);}intmain(){// 主线程中设置相应的信号集合sigset_tsigset;sigemptyset(&sigset);addSignal(sigset,SIGINT,SIGTERM,SIGABRT);pthread_sigmask(SIG_BLOCK,&sigset,nullptr);std::...
编写信号处理函数需要注意一些细节,比如信号处理函数的参数必须符合特定的格式(int signum)并且不能调用一些不可重入的函数,否则可能导致不可预知的行为。同时,为了确保信号处理函数的安全性,最好在函数内部采取一些措施,比如使用信号安全的函数、避免使用全局变量等。
defsignal_handler(signum):# Do some cleanupifsignum==signal.SIGINT:gevent.signal(signal.SIGINT,signal.SIG_DFL)os.kill(os.getpid(),signal.SIGINT) Traceback (most recent call last): File "/Users/peter/.pyenv/versions/ew/lib/python2.6/site-packages/gevent/hub.py", line 295, in handle self...
#include <stdio.h> #include <stdlib.h> #include <signal.h> #include <unistd.h> // 定义信号处理程序 void sigterm_handler(int signum) { printf("Received SIGTERM signal. Exiting gracefully... "); // 在这里执行清理操作 exit(signum); } int main() { // 设...
definstall_cry_handler(logger):# 2.4 does not have sys._current_framesifsys.version_info > (2,5):defcry_handler(signum, frame):"""Signal handler logging the stacktrace of all active threads."""logger.error("\n"+ cry()) platforms.install_signal_handler("SIGUSR1", cry_handler) ...
static void sighandler(int signum) { + signal(SIGPIPE, SIG_IGN); fprintf(stderr, "Signal caught, exiting!\n"); do_exit = 1; rtlsdr_cancel_async(dongle.dev); diff --git a/src/rtl_power.c b/src/rtl_power.c index 6204de2..df3ceb7 100644 ...
import asyncio import signal def on_trap(loop,signum): print(f"shlian on_trap:{signum}") print("loop is stopping...") loop.stop() print("loop stopped") if __name__=="__main__": loop=asyncio.get_event_loop() loop.add_signal_handler(signal.SIGINT,on_trap,loop,signal.SIGINT) loop...