SIGINT (POSIX)
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SA_SIGINFO macros
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On POSIX-compliant platforms, SIGINT is the signal sent to a process when a user wishes to interrupt it. In source code, SIGINT is a symbolic constant defined in the header file signal.h. Symbolic signal names are used because a signal's numeric value can vary across platforms; on the vast majority of systems, it is signal #2
[edit] Etymology
SIG is a common prefix for signal names. INT is an abbreviated form of interrupt or interactive.
[edit] Usage
SIGINT is sent when the user on the process' terminal presses the interrupt the running process key — typically Control-C, but on some systems, the "delete" character or "break" key (the latter is not an ASCII character, but an out-of-band signal such as an electrical condition on a serial port).
[edit] See also
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