Send a signal to the caller
#include <signal.h> int raise(int sig);
The raise() function sends a signal to the calling process or thread. In a single-threaded program it is equivalent to
In a multithreaded program it is equivalent to
If the signal causes a handler to be called, raise() will return only after the signal handler has returned.
raise() returns 0 on success, and nonzero for failure.
The raise() function is thread-safe.
C89, C99, POSIX.1-2001.
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