cb22561995-10-11Fredrik Hübinette (Hubbe) /*\ ||| This file a part of uLPC, and is copyright by Fredrik Hubinette ||| uLPC is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/
5267b71995-08-09Fredrik Hübinette (Hubbe) #include "global.h" #include "macros.h" #include "error.h" #include "interpret.h" #include "stralloc.h" #include "builtin_efuns.h" #include "array.h" #include "object.h" char *automatic_fatal;
cb22561995-10-11Fredrik Hübinette (Hubbe) JMP_BUF *recoveries=0; ONERROR *onerror_stack=0;
5267b71995-08-09Fredrik Hübinette (Hubbe)  jmp_buf *init_recovery(JMP_BUF *r) { r->fp=fp; r->sp=sp; r->mark_sp=mark_sp; r->previous=recoveries;
cb22561995-10-11Fredrik Hübinette (Hubbe)  r->onerror=onerror_stack;
5267b71995-08-09Fredrik Hübinette (Hubbe)  recoveries=r; return & r->recovery; } void throw() { if(!recoveries) fatal("No error recovery context.\n"); #ifdef DEBUG if(sp < recoveries->sp) fatal("Error in error.\n"); #endif while(fp != recoveries->fp) { #ifdef DEBUG if(!fp) fatal("Popped out of stack frames.\n"); #endif free_object(fp->current_object); free_program(fp->context.prog); fp = fp->parent_frame; } pop_n_elems(sp - recoveries->sp); mark_sp = recoveries->mark_sp;
cb22561995-10-11Fredrik Hübinette (Hubbe)  while(recoveries->onerror != onerror_stack) { #ifdef DEBUG if(!onerror_stack) fatal("Popped out of onerror stack!\n"); #endif (*onerror_stack->func)(onerror_stack->arg); onerror_stack=onerror_stack->previous; }
5267b71995-08-09Fredrik Hübinette (Hubbe)  longjmp(recoveries->recovery,1); } struct svalue throw_value = { T_INT }; void va_error(char *fmt, va_list args) { char buf[2000];
5fe7a71995-11-06Fredrik Hübinette (Hubbe)  static char *in_error;
5267b71995-08-09Fredrik Hübinette (Hubbe)  if(in_error) {
5fe7a71995-11-06Fredrik Hübinette (Hubbe)  char *tmp=in_error;
5267b71995-08-09Fredrik Hübinette (Hubbe)  in_error=0;
5fe7a71995-11-06Fredrik Hübinette (Hubbe)  fatal("Recursive error() calls, original error: %s",tmp);
5267b71995-08-09Fredrik Hübinette (Hubbe)  }
5fe7a71995-11-06Fredrik Hübinette (Hubbe)  in_error=buf;
5267b71995-08-09Fredrik Hübinette (Hubbe)  VSPRINTF(buf, fmt, args); if(!recoveries || automatic_fatal) { if(!automatic_fatal) automatic_fatal="No error recovery context: "; fprintf(stderr,"%s %s",automatic_fatal,buf); abort(); } if(strlen(buf) >= sizeof(buf)) fatal("Buffer overflow in error()\n"); push_string(make_shared_string(buf)); f_backtrace(0); f_aggregate(2); free_svalue(& throw_value); sp--; throw_value = *sp; in_error=0; throw(); /* Hope someone is catching, or we will be out of balls. */ } void error(char *fmt,...) { va_list args; va_start(args,fmt); va_error(fmt,args); va_end(args); } void fatal(char *fmt, ...) { va_list args; static int in_fatal = 0; va_start(args,fmt); /* Prevent double fatal. */ if (in_fatal) { (void)VFPRINTF(stderr, fmt, args); abort(); } in_fatal = 1; #ifdef DEBUG dump_backlog(); #endif (void)VFPRINTF(stderr, fmt, args); /* Insert dump routine call here */ fflush(stderr); abort(); }