C standard library :: signal
SIG_DFL • SIG_ERR • SIG_HOLD • SIG_IGN • SIGABRT • SIGALRM • SIGBUS • SIGCHLD • SIGCLD • SIGCONT • SIGFPE• SIGHUP• SIGILL • SIGINT• SIGIO• SIGIOT• SIGKILL • SIGPIPE • SIGPOLL• SIGPROF • SIGPWR • SIGQUIT• SIGSEGV • SIGSTKFLT • SIGSTOP • SIGSYS • SIGTERM•SIGTRAP • SIGTSTP•SIGTTIN•SIGTTOU • SIGUNUSED • SIGURG • SIGUSR1• SIGUSR2 • SIGVTALRM • SIGWINCH • SIGXCPU • SIGXFSZ
mcontext_t • pid_t •sig_atomic_t • sigaction • sigevent • siginfo_t • sigset_t •sigstack • sigval • stack_t • ucontext_t
bsd_signal • gsignal • kill • killpg • psignal • raise • sigaction • sigaddset • sigandset • sigblock • sigdelset • sigdelset • sigemptyset • sigfillset • siggetmask • sighold • sigignore • siginterrupt • sigisemptyset • sigismember • signal • sigorset • sigpause • sysv_signal• sigpending • sigprocmask • sigqueue • sigrelse • sigset • sigsuspend • sigtimedwait • sigwait • sigwaitinfo
Standard library (bibliotek) for signal.
Macro
Fake signal funktioner:
| Navn | Beskrivelse |
|---|---|
| SIG_DFL | Default action. |
| SIG_ERR | Error return. |
| SIG_HOLD | Hold signal tilbage, |
| SIG_IGN | Ignorer signal. |
Signaler:
| Navn | Num | Standard handling |
Beskrivelse |
|---|---|---|---|
| SIGHUP | 1 | T | Hangup (POSIX). |
| SIGINT | 2 | T | Afbrydelse (ANSI). |
| SIGQUIT | 3 | A | Quit (POSIX). |
| SIGILL | 4 | A | Illegal instruktion (ANSI). |
| SIGTRAP | 5 | A | Trace trap (POSIX). |
| SIGABRT | 6 | A | Abort (ANSI). |
| SIGIOT | 6 | IOT trap (4.2 BSD). | |
| SIGBUS | 7 | A | BUS error (4.2 BSD). |
| SIGFPE | 8 | A | Floating-point undtagelse (ANSI). |
| SIGKILL | 9 | T | Kill, unblockable (POSIX). |
| SIGUSR1 | 10 | T | User-defined signal 1 (POSIX). |
| SIGSEGV | 11 | A | Segmentation violation (ANSI). |
| SIGUSR2 | 12 | T | User-defined signal 2 (POSIX). |
| SIGPIPE | 13 | T | Broken pipe (POSIX). |
| SIGALRM | 14 | T | Alarm clock (POSIX). |
| SIGTERM | 15 | T | Termination (ANSI). |
| SIGSTKFLT | 16 | Stack fault. | |
| SIGCLD | 17 | I | Samme som SIGCHLD (System V). |
| SIGCHLD | 17 | I | Child status has changed (POSIX). |
| SIGCONT | 18 | C | Continue (POSIX). |
| SIGSTOP | 19 | S | Stop, unblockable (POSIX). |
| SIGTSTP | 20 | S | Keyboard stop (POSIX). |
| SIGTTIN | 21 | S | Background read from tty (POSIX). |
| SIGTTOU | 22 | S | Background write to tty (POSIX). |
| SIGURG | 23 | I | Urgent condition on socket (4.2 BSD). |
| SIGXCPU | 24 | A | CPU limit exceeded (4.2 BSD). |
| SIGXFSZ | 25 | A | File size limit exceeded (4.2 BSD). |
| SIGVTALRM | 26 | T | Virtual alarm clock (4.2 BSD). |
| SIGPROF | 27 | T | Profiling alarm clock (4.2 BSD). |
| SIGWINCH | 28 | Window size change (4.3 BSD, Sun). | |
| SIGPOLL | 29 | T | Pollable event occurred (System V). |
| SIGIO | 29 | T | I/O now possible (4.2 BSD). |
| SIGPWR | 30 | Power failure restart (System V). | |
| SIGSYS | 31 | A | Bad system call. |
| SIGUNUSED | 31 | ||
| _NSIG | 64 | Største signal nummer. |
Standard handling er følgende:
- A
- Unormal terminering af processen.[XSI]
![[Option Start]](/service/kurser/grf/lft-ding.gif)
Ekstra implementerede termineringshandlinger som at kreere en core fil, kan forekomme.![[Option End]](/service/kurser/grf/rgt-ding.gif)
- C
- Fortsæt (Continue) processen, hvis den er standset, ellers, ignorer signalet.
- I
- Ignorer signalet.
- S
- Stop processen.
- T
- Unormal terminering af processen. Processen er termineret med alle konsekvenser som exit() bortset fra at status givet til wait() og waitpid() indikerer unormal terminering af signalet.
Type
| Navn | Beskrivelse |
|---|---|
| mcontext_t | |
| pid_t | |
| sig_atomic_t | |
| sigaction | Struktur |
| sigevent | Struktur |
| siginfo_t | |
| sigset_t | Struktur |
| sigstack | |
| sigval | Struktur |
| stack_t | |
| ucontext_t |
Function
| Navn | Beskrivelse |
|---|---|
| void bsd_signal (int sig, void *handler) | |
| int gsignal (int sig) | |
| int kill (pid_t pid, int sig) | |
| int killpg (pid_t pgrp, int sig) | |
| void psignal (int sig, const char *s) | |
| int raise (int sig) | |
| int sigaction (int sig, const struct sigaction *act, struct sigaction *oact) | |
| int sigaddset (sigset_t *set, int signo) | Læg et signal til et signalsæt |
| int sigandset (sigset_t *set, const sigset_t *left, const sigset_t *right) | |
| int sigdelset (sigset_t *set, int signo) | |
| int sigemptyset (sigset_t *set) | Nulstil alle signaler i sæt |
| int sigfillset (sigset_t *set) | Initialiser og fyld et signalsæt |
| int sighold (int sig) | |
| int sigignore (int sig) | |
| int siginterrupt (int sig, int interrupt) | |
| int sigisemptyset (const sigset_t *set) | |
| int sigismember (const sigset_t *set, int signo) | |
| void signal (int sig, void *handler) | Sæt en handler for et signal. |
| int sigorset (sigset_t *set, const sigset_t *left, const sigset_t *right) | |
| int sigpause (int sig) | |
| int sigpending (sigset_t *set) | |
| int sigprocmask (int how, const sigset_t *set, sigset_t *oset) | Management af blokerede signaler. |
| int sigqueue (pid_t pid, int sig, const union sigval val) | |
| int sigrelse (int sig) | |
| void sigset (int sig, void *disp) | |
| int sigsuspend (const sigset_t *set) | |
| int sigtimedwait (const sigset_t *set, siginfo_t *info, const struct timespec *timeout) | |
| int sigwait (const sigset_t *set, int *sig) | |
| int sigwaitinfo (const sigset_t *set, siginfo_t *info) | |
| void sysv_signal (int sig, void *handler) |
