結論是:
多線程下如果其中一個線程崩潰了會導致其他線程(整個進程)都崩潰;
多進程下如果其中一個進程崩潰了對其餘進程沒有影響;
多線程
#include#include#include#include#includevoid *fun1(void *arg) { printf("fun1 enter "); while(1) { printf("%s ", __FUNCTION__); usleep(1000 * 1000); } printf("fun1 exit "); return ((void *)1); } void *fun2(void *arg) { printf("fun1 enter "); usleep(1000 * 3000); char * ptr = (char *)malloc(sizeof(char)); printf("ptr1: 0x%x ", ptr); ptr = NULL; printf("ptr2: 0x%x ", ptr); free(ptr); memcpy(ptr, "123", 3); printf("ptr3: 0x%x ", ptr); printf("fun2 exit "); return ((void *)2); } int main(void) { pthread_t tid1, tid2; int err; err = pthread_create(&tid1, NULL, fun1, NULL); assert(0 == err); err = pthread_create(&tid2, NULL, fun2, NULL); assert(0 == err); printf("main join ... "); // getchar(); pthread_join(tid1, NULL); pthread_join(tid2, NULL); return 0; }
多進程
#include#include#include#include#includevoid fun(void *arg) { printf("fun1 enter "); usleep(1000 * 3000); char * ptr = (char *)malloc(sizeof(char)); printf("ptr1: 0x%x ", ptr); ptr = NULL; printf("ptr2: 0x%x ", ptr); free(ptr); memcpy(ptr, "123", 3); printf("ptr3: 0x%x ", ptr); printf("fun2 exit "); return ; } int main(int argc, char *argv[]) { assert(2 == argc); pid_t pid; int i; for(i=0; ipid) { printf("fork error"); exit(1); } else if(0 == pid) { printf("child pid is %lu ", (unsigned long)getpid()); fun(NULL); exit(0); } } printf("parent pid is %lu ", (unsigned long)getpid()); while(-1 != wait(NULL)); //等待所有子進程結束 printf("main return "); getchar(); return 0; }
[zmcjlove ] 淺談linux模擬多線程崩潰和多進程崩潰已經有222次圍觀