linux中的信号结构体

最新推荐文章于 2024-10-29 10:26:27 发布

lb015331

最新推荐文章于 2024-10-29 10:26:27 发布

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分类专栏：网络编程文章标签： linux signal struct timer user kill

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typedef struct siginfo
{

int si_signo; /* Signal number.*/

int si_errno; /* If non-zero, an errno value associated with this signal, as defined in <errno.h>.*/
int si_code; /* Signal code*/

                union
                {
                       int _pad[__SI_PAD_SIZE];

                         struct /* kill().*/
                         {
                                    __pid_t si_pid;          /* Sending process ID.*/
                                    __uid_t si_uid;          /* Real user ID of sending process.*/
                         } _kill;

                        struct /* POSIX.1b timers.*/

                         {
                                   int si_tid;          /* Timer ID.*/
                                   int si_overrun;          /* Overrun count.*/
                                  sigval_t si_sigval;      /* Signal value.*/
                         } _timer;

                         struct /* POSIX.1b signals. */
                         {
                                   __pid_t si_pid;          /* Sending process ID.*/
                                   __uid_t si_uid;          /* Real user ID of sending process.*/
                                   sigval_t si_sigval;      /* Signal value.*/
                         } _rt;

                         struct    /* SIGCHLD.*/
                         {
                                   __pid_t si_pid;          /* Which child.*/
                                   __uid_t si_uid;          /* Real user ID of sending process.*/
                                   int si_status;           /* Exit value or signal.*/
                                   __clock_t si_utime;
                                   __clock_t si_stime;
                          } _sigchld;

                          struct    /* SIGILL, SIGFPE, SIGSEGV, SIGBUS.*/
                          {
                                  void *si_addr;           /* Faulting insn/memory ref.*/
                          } _sigfault;

                        struct/* SIGPOLL. */
                          {
                                   long int si_band;        /* Band event for SIGPOLL.*/
                                   int si_fd;
                          } _sigpoll;

} _sifields;

} siginfo_t;