pid

问题 I have done some experiments and to my knowledge, an app can create several instances of ART (AndroidRunTime) that can execute code concurrently. Each of these instances are called by the same PID than the app. Each of these ART instances can create several threads and these threads have the app PID. But is it possible for an app to have several PID simultaneously? If it is the case could you provide an example? 来源： https://stackoverflow.com/questions/41898846/is-it-possible-for-an-app-to

问题 I have done some experiments and to my knowledge, an app can create several instances of ART (AndroidRunTime) that can execute code concurrently. Each of these instances are called by the same PID than the app. Each of these ART instances can create several threads and these threads have the app PID. But is it possible for an app to have several PID simultaneously? If it is the case could you provide an example? 来源： https://stackoverflow.com/questions/41898846/is-it-possible-for-an-app-to

问题 I have an assignment which gives me this code to transform into a code that makes the parent process wait for all children processes to finish. PS: the first code has 4 processes and needs to use waitpid to solve this. #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <unistd.h> int main(){ pid_t p = fork(); pid_t k = fork(); if(p>0){ printf("p=%d: PID = %d\n", p, getpid()); sleep(45); exit(0); } else if(p==0){ printf("p=%d: PID = %d\n", p, getpid()); exit(0); } else if(p

问题 I have an assignment which gives me this code to transform into a code that makes the parent process wait for all children processes to finish. PS: the first code has 4 processes and needs to use waitpid to solve this. #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <unistd.h> int main(){ pid_t p = fork(); pid_t k = fork(); if(p>0){ printf("p=%d: PID = %d\n", p, getpid()); sleep(45); exit(0); } else if(p==0){ printf("p=%d: PID = %d\n", p, getpid()); exit(0); } else if(p

问题 I have to write a SNMP module which monitor a certain server application that I have written too. The problem is that I have to know if this application is running and I should be able to kill it whenever I can. I know the port where the application is listening (reading the application configuration file) and I can try to bind this port to a socket in order to know if it is (or isn't) being used by my application or another which is enough for my module. Here is the code: int get_server

问题 I have to write a SNMP module which monitor a certain server application that I have written too. The problem is that I have to know if this application is running and I should be able to kill it whenever I can. I know the port where the application is listening (reading the application configuration file) and I can try to bind this port to a socket in order to know if it is (or isn't) being used by my application or another which is enough for my module. Here is the code: int get_server

问题 In linux, I can use lsof -i as in the following function: def FindProcessUsingPort(portnum): import os fp = os.popen("lsof -i :%s" % portnum) lines = fp.readlines() fp.close() pid = None if len(lines) >= 2: pid = int(lines[1].split()[1]) return pid Is there a cross-platform way to figure this out? As a relevant reference, once I know the process id, the psutil library is very nice and lets me determine all sorts of useful process information for it in a cross-platform way. I just can't get

来源： https://stackoverflow.com/questions/61991369/which-pid-is-using-a-port-inside-a-k8s-pod-without-net-tools

来源： https://stackoverflow.com/questions/10696863/any-example-of-copy-from-user-kernel-and-userspace

来源： https://stackoverflow.com/questions/10696863/any-example-of-copy-from-user-kernel-and-userspace