c/c++语言开发共享struct itimerspec as timer_create的参数无效参数

我正在尝试使用POSIX信号处理POSIX定时器。 当我尝试执行你可以找到的代码时，我得到：

Errore timer_settime：参数无效

在GAPIL上，这是基于高级Linux编程和Unix网络编程的，我读到这可能发生在new_value.value里面你指定了一个负时间值或者高于999999999的纳秒数。但我认为我使用过的参数没关系……

#include  #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  void termination_handler(int signum) { printf("Timer scaduton"); } int main() { timer_t timer1; struct sigevent sigeventStruct; sigeventStruct.sigev_notify = SIGEV_SIGNAL; sigeventStruct.sigev_signo = 10; if(timer_create(_POSIX_MONOTONIC_CLOCK, &sigeventStruct, &timer1) == -1) { printf( "Errore timer_create: %sn", strerror( errno ) ); } printf("timer_create eseguiton"); struct itimerspec tempoIniziale; tempoIniziale.it_value.tv_nsec = 0; struct itimerspec tempoFinale; tempoFinale.it_value.tv_nsec = 10000000; if(timer_settime(timer1, 0, &tempoIniziale, &tempoFinale) == -1) { printf( "Errore timer_settime: %sn", strerror( errno ) ); } struct sigaction newSigAzione, oldSigAzione; newSigAzione.sa_handler = termination_handler; //oldSigAzione.sa_handler = termination_handler; sigemptyset (&newSigAzione.sa_mask); newSigAzione.sa_flags = 0; sigaction (SIGEV_SIGNAL, NULL, &oldSigAzione); if(oldSigAzione.sa_handler != SIG_IGN) { //sigaction (SIGEV_SIGNAL, newSigAzione, NULL); } /*sigaction (SIGINT, NULL, &oldSigAzione); if (oldSigAzione.sa_handler != SIG_IGN) sigaction (SIGINT, &newSigAzione, NULL); sigaction (SIGHUP, NULL, &oldSigAzione); if (oldSigAzione.sa_handler != SIG_IGN) sigaction (SIGHUP, &newSigAzione, NULL); sigaction (SIGTERM, NULL, &oldSigAzione); if (oldSigAzione.sa_handler != SIG_IGN) sigaction (SIGTERM, &newSigAzione, NULL);*/ /*sigaction (SIGTERM, &newSigAzione, NULL);*/ return 0; } 

  CLOCK_REALTIME   系统范围的实时时钟。 设置此时钟需要适当的权限。  CLOCK_MONOTONIC   无法设置的时钟，表示自某些未指定的起点以来的单调时间。  CLOCK_PROCESS_CPUTIME_ID   来自CPU的高分辨率每进程计时器。  CLOCK_THREAD_CPUTIME_ID   特定于线程的CPU时钟。 

 ... memset(&sigeventStruct, 0, sizeof sigeventStruct); ... and struct itimerspec tempoFinale; memset(&tempoFinale, 0, sizeof tempoFinale); tempoFinale.it_value.tv_nsec = 10000000; 

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