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Difference between revisions of "cpp/utility/program/raise"

From cppreference.com
< cpp‎ | utility‎ | program
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Sends signal sig to the program. The signal handler (specified using the {{rlpf|signal}} function) is invoked.
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Sends signal sig to the program. The signal handler (specified using the {{lc|signal()}} function) is invoked.
  
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If the user-defined signal handling strategy is not set using {{rlpf|signal}} yet, it is implementation-defined whether the signal will be ignored or default handler will be invoked.  
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If the user-defined signal handling strategy is not set using {{lc|signal()}} yet, it is implementation-defined whether the signal will be ignored or default handler will be invoked.  
  
 
===Parameters===
 
===Parameters===

Revision as of 07:30, 15 August 2013

 
C++
 
Utilities library
General utilities
Relational operators (deprecated in C++20)
 
Program support utilities
 
Defined in header <csignal>
int raise( int sig );

Sends signal sig to the program. The signal handler (specified using the signal() function) is invoked.

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

Contents

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]


Return value

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

Example

Run this code
#include <csignal>
#include <iostream>
 
void signal_handler(int signal)
{
    std::cout << "Received signal " << signal << '\n';
}
 
int main()
{
    // Install a signal handler
    std::signal(SIGTERM, signal_handler);
 
    std::cout << "Sending signal " << SIGTERM << '\n';
    std::raise(SIGTERM);
}

Possible output: 

Sending signal 15
Received signal 15

See also

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