Allows you to call the DEC C RTL from other languages or to use the DEC C RTL when your main function is not in C. It initializes the run-time environment and establishes both an exit and condition handler. VAXC$CRTL_ INIT is a synonym for DECC$CRTL_INIT. Either name invokes the same routine.
#include <signal.h> void DECC$CRTL_INIT();
$ PASCAL EXAMPLE1 $ LINK EXAMPLE1 $ TY EXAMPLE1.PAS PROGRAM TESTC(input, output); PROCEDURE DECC$CRTL_INIT; extern; BEGIN DECC$CRTL_INIT; END
A shareable image need only call this function if it contains a DEC C function for signal handling, environment variables, I/O, exit handling, a default file protection mask, or if it is a child process that should inherit context.
Although many of the initialization activities are performed only once, DECC$CRTL_INIT can safely be called multiple times. On OpenVMS VAX systems, DECC$CRTL_INIT establishes the DEC C RTL internal OpenVMS exception handler in the frame of the routine that calls DECC$CRTL_INIT each time DECC$CRTL_ INIT is called.
At least one frame in the current call stack must have that handler established for OpenVMS exceptions to get mapped to UNIX signals.