linux下信号注册

[fenglinngu123]

linux下 信号量通信，我不想用系统的信号，怎么注册一个新的信号。

[qq120848369]

       This header shall also declare the macros SIGRTMIN and SIGRTMAX, which evaluate to integer expressions, and specify a range of signal numbers  that  are
       reserved  for  application use and for which the realtime signal behavior specified in this volume of IEEE Std 1003.1-2001 is supported. The signal num-
       bers in this range do not overlap any of the signals specified in the following table.

       The range SIGRTMIN through SIGRTMAX inclusive shall include at least {RTSIG_MAX} signal numbers.

       It is implementation-defined whether realtime signal behavior is supported for other signals.

       This header also declares the constants that are used to refer to the signals that occur in the system. Signals defined here begin with the letters SIG.
       Each  of  the signals have distinct positive integer values. The value 0 is reserved for use as the null signal (see kill()). Additional implementation-
       defined signals may occur in the system.

       The ISO C standard only requires the signal names SIGABRT, SIGFPE, SIGILL, SIGINT, SIGSEGV, and SIGTERM to be defined.

       The following signals shall be supported on all implementations (default actions are explained below the table):

                                                  Signal    Default Action Description
                                                  SIGABRT   A              Process abort signal.
                                                  SIGALRM   T              Alarm clock.
                                                  SIGBUS    A              Access to an undefined portion of a mem-
                                                                           ory object.
                                                  SIGCHLD   I              Child process terminated, stopped,
                                                                           or continued.
                                                  SIGCONT   C              Continue executing, if stopped.
                                                  SIGFPE    A              Erroneous arithmetic operation.
                                                  SIGHUP    T              Hangup.
                                                  SIGILL    A              Illegal instruction.
                                                  SIGINT    T              Terminal interrupt signal.
                                                  SIGKILL   T              Kill (cannot be caught or ignored).
                                                  SIGPIPE   T              Write  on a pipe with no one to read it.
                                                  SIGQUIT   A              Terminal quit signal.
                                                  SIGSEGV   A              Invalid memory reference.
                                                  SIGSTOP   S              Stop executing (cannot be caught or
                                                                           ignored).
                                                  SIGTERM   T              Termination signal.
                                                  SIGTSTP   S              Terminal stop signal.
                                                  SIGTTIN   S              Background process attempting read.
                                                  SIGTTOU   S              Background process attempting write.
                                                  SIGUSR1   T              User-defined signal 1.
                                                  SIGUSR2   T              User-defined signal 2.
                                                  SIGPOLL   T              Pollable event.
                                                  SIGPROF   T              Profiling timer expired.
                                                  SIGSYS    A              Bad system call.
                                                  SIGTRAP   A              Trace/breakpoint trap.
                                                  SIGURG    I              High bandwidth data is available at a
                                                                           socket.
                                                  SIGVTALRM T              Virtual timer expired.
                                                  SIGXCPU   A              CPU time limit exceeded.
                                                  SIGXFSZ   A              File size limit exceeded.

SIGRTMIN and SIGRTMAX, which evaluate to integer expressions, and specify a range of signal numbers that are
reserved for application use and for which the realtime signal behavior specified in this volume of IEEE Std 1003.1-2001 is supported.

这个范围里的你都可以用，属于实时信号，相同信号可以排队。

[qq120848369]

[User:root Time:17:13:28 Path:/home/liangdong/c]$ make
gcc -g -I./include   -c -o src/main.o src/main.c
.gcc -o output src/main.o -lpthread -lm -lz
Makefile done.
[User:root Time:17:13:29 Path:/home/liangdong/c]$ ./output 
[34-64]
[User:root Time:17:13:29 Path:/home/liangdong/c]$ kill -l
 1) SIGHUP       2) SIGINT       3) SIGQUIT      4) SIGILL       5) SIGTRAP
 6) SIGABRT      7) SIGBUS       8) SIGFPE       9) SIGKILL     10) SIGUSR1
11) SIGSEGV     12) SIGUSR2     13) SIGPIPE     14) SIGALRM     15) SIGTERM
16) SIGSTKFLT   17) SIGCHLD     18) SIGCONT     19) SIGSTOP     20) SIGTSTP
21) SIGTTIN     22) SIGTTOU     23) SIGURG      24) SIGXCPU     25) SIGXFSZ
26) SIGVTALRM   27) SIGPROF     28) SIGWINCH    29) SIGIO       30) SIGPWR
31) SIGSYS      34) SIGRTMIN    35) SIGRTMIN+1  36) SIGRTMIN+2  37) SIGRTMIN+3
38) SIGRTMIN+4  39) SIGRTMIN+5  40) SIGRTMIN+6  41) SIGRTMIN+7  42) SIGRTMIN+8
43) SIGRTMIN+9  44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12 47) SIGRTMIN+13
48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14 51) SIGRTMAX-13 52) SIGRTMAX-12
53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9  56) SIGRTMAX-8  57) SIGRTMAX-7
58) SIGRTMAX-6  59) SIGRTMAX-5  60) SIGRTMAX-4  61) SIGRTMAX-3  62) SIGRTMAX-2
63) SIGRTMAX-1  64) SIGRTMAX
[User:root Time:17:13:32 Path:/home/liangdong/c]$ ./output 
[34-64]
[User:root Time:17:13:42 Path:/home/liangdong/c]$ cat src/main.c 
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

int main(int argc, char* const argv[]) {
        printf("[%u-%u]\n", SIGRTMIN, SIGRTMAX);
        return 0;
}

自己看吧，kill -l里的序号就是信号的值。

[justkk]

不能自己添加吧
可以使用 SIGUSR1 SIGUSR2

[localxiao]

做不到，不是windows，你还可以发送自定义消息

最多，看楼上