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请问:向进程中的pause()发送一个SIGALRM信号，线程就直接退出了，为什么啊?
来源: 互联网 发布时间：2016-02-15
本文导语: 难道线程会使PAUSE()直接返回，再使进程退出吗? | SIGALRM的缺省动作是中止进程，如果进程未捕捉该信号，就会中止，线程自然退出了！ No Name Default Action Des...
难道线程会使PAUSE()直接返回，再使进程退出吗?
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SIGALRM的缺省动作是中止进程，如果进程未捕捉该信号，就会中止，线程自然退出了！
No Name Default Action Description
1 SIGHUP terminate process terminal line hangup
2 SIGINT terminate process interrupt program
3 SIGQUIT create core image quit program
4 SIGILL create core image illegal instruction
5 SIGTRAP create core image trace trap
6 SIGABRT create core image abort program (formerly SIGIOT)
7 SIGEMT create core image emulate instruction executed
8 SIGFPE create core image floating-point exception
9 SIGKILL terminate process kill program
10 SIGBUS create core image bus error
11 SIGSEGV create core image segmentation violation
12 SIGSYS create core image non-existent system call invoked
13 SIGPIPE terminate process write on a pipe with no reader
14 SIGALRM terminate process real-time timer expired
15 SIGTERM terminate process software termination signal
16 SIGURG discard signal urgent condition present on
socket
17 SIGSTOP stop process stop (cannot be caught or
ignored)
18 SIGTSTP stop process stop signal generated from
keyboard
19 SIGCONT discard signal continue after stop
20 SIGCHLD discard signal child status has changed
21 SIGTTIN stop process background read attempted from
control terminal
22 SIGTTOU stop process background write attempted to
control terminal
23 SIGIO discard signal I/O is possible on a descriptor
(see fcntl(2))
24 SIGXCPU terminate process cpu time limit exceeded (see
setrlimit(2))
25 SIGXFSZ terminate process file size limit exceeded (see
setrlimit(2))
26 SIGVTALRM terminate process virtual time alarm (see
setitimer(2))
27 SIGPROF terminate process profiling timer alarm (see
setitimer(2))
28 SIGWINCH discard signal Window size change
29 SIGINFO discard signal status request from keyboard
30 SIGUSR1 terminate process User defined signal 1
31 SIGUSR2 terminate process User defined signal 2
32 SIGTHR terminate process thread interrupt
No Name Default Action Description
1 SIGHUP terminate process terminal line hangup
2 SIGINT terminate process interrupt program
3 SIGQUIT create core image quit program
4 SIGILL create core image illegal instruction
5 SIGTRAP create core image trace trap
6 SIGABRT create core image abort program (formerly SIGIOT)
7 SIGEMT create core image emulate instruction executed
8 SIGFPE create core image floating-point exception
9 SIGKILL terminate process kill program
10 SIGBUS create core image bus error
11 SIGSEGV create core image segmentation violation
12 SIGSYS create core image non-existent system call invoked
13 SIGPIPE terminate process write on a pipe with no reader
14 SIGALRM terminate process real-time timer expired
15 SIGTERM terminate process software termination signal
16 SIGURG discard signal urgent condition present on
socket
17 SIGSTOP stop process stop (cannot be caught or
ignored)
18 SIGTSTP stop process stop signal generated from
keyboard
19 SIGCONT discard signal continue after stop
20 SIGCHLD discard signal child status has changed
21 SIGTTIN stop process background read attempted from
control terminal
22 SIGTTOU stop process background write attempted to
control terminal
23 SIGIO discard signal I/O is possible on a descriptor
(see fcntl(2))
24 SIGXCPU terminate process cpu time limit exceeded (see
setrlimit(2))
25 SIGXFSZ terminate process file size limit exceeded (see
setrlimit(2))
26 SIGVTALRM terminate process virtual time alarm (see
setitimer(2))
27 SIGPROF terminate process profiling timer alarm (see
setitimer(2))
28 SIGWINCH discard signal Window size change
29 SIGINFO discard signal status request from keyboard
30 SIGUSR1 terminate process User defined signal 1
31 SIGUSR2 terminate process User defined signal 2
32 SIGTHR terminate process thread interrupt
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