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      raise

      From cppreference.com
      <c‎ |program
       
       
      Program support utilities
      Program termination
      Unreachable control flow
      Communicating with the environment
      Memory alignment query
      Signals
      Signal types
      Non-local jumps
      Types
       
      Defined in header<signal.h>
      int raise(int sig);

      Sends signal sig to the program. The signal handler, specified usingsignal(), is invoked.

      If the user-defined signal handling strategy is not set usingsignal() yet, it is implementation-defined whether the signal will be ignored or default handler will be invoked.

      Contents

      [edit]Parameters

      sig - the signal to be sent. It can be an implementation-defined value or one of the following values:
      defines signal types
      (macro constant)[edit]

      [edit]Return value

      ​0​ upon success, non-zero value on failure.

      [edit]Example

      Run this code
      #include <signal.h>#include <stdio.h> void signal_handler(intsignal){printf("Received signal %d\n",signal);} int main(void){// Install a signal handler.signal(SIGTERM, signal_handler); printf("Sending signal %d\n",SIGTERM);    raise(SIGTERM);printf("Exit main()\n");}

      Output:

      Sending signal 15Received signal 15Exit main()

      [edit]References

      • C17 standard (ISO/IEC 9899:2018):
      • 7.14.2.1 The raise function (p: 194-195)
      • C11 standard (ISO/IEC 9899:2011):
      • 7.14.2.1 The raise function (p: 267)
      • C99 standard (ISO/IEC 9899:1999):
      • 7.14.2.1 The raise function (p: 248)
      • C89/C90 standard (ISO/IEC 9899:1990):
      • 4.7.2.1 The raise function

      [edit]See also

      sets a signal handler for particular signal
      (function)[edit]
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