57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
#include <assert.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <limits.h>
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#include "myc_fortran.h"
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void intcatch(int sig)
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{ printf("\nuse quit (normally ctrl-\\) to interrupt\n");
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}
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int called=0; /* env is valid only if called==1 */
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jmp_buf env;
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void (*inthdl)(int sig)=intcatch;
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void (*errhdl)(void);
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void sighdl(int sig)
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{ if (called) longjmp(env,sig);
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}
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void F_FUN(sys_err_hdl)(void errhdl0(void))
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{ errhdl=errhdl0; }
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void F_FUN(sys_int_hdl)(void inthdl0(int sig))
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{ inthdl=inthdl0; }
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void F_FUN(sys_try)(void proc(void))
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{ int status;
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void (*sgh[32]) (int);
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assert(!called); /* nested calls not allowed */
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called=1;
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sgh[SIGFPE] =signal(SIGFPE, sighdl);
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sgh[SIGINT] =signal(SIGINT, *inthdl);
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status=setjmp(env);
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if (status==0) /* first return of setjmp */
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{ proc(); }
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else
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{ (*errhdl)(); };
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signal(SIGFPE, sgh[SIGFPE]);
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signal(SIGINT, intcatch);
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called=0;
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}
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void F_FUN(sys_abort)(void)
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{ if (called) longjmp(env,-2);
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}
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void F_FUN(sys_exit_hdl)(void hdl(void))
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{ atexit(hdl);
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}
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