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//======================================================================== // // atexit.cxx // // Implementation of the atexit() function // //======================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //======================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): jlarmour // Contributors: // Date: 2000-04-30 // Purpose: // Description: // Usage: // //####DESCRIPTIONEND#### // //======================================================================== // CONFIGURATION #include <pkgconf/libc_startup.h> // Configuration header // Include atexit() ? #ifdef CYGFUN_LIBC_ATEXIT // INCLUDES #include <cyg/infra/cyg_type.h> // Common type definitions and support #include <cyg/infra/cyg_trac.h> // Common tracing support #include <cyg/infra/cyg_ass.h> // Common assertion support #include <stdlib.h> // Header for all stdlib functions // (like this one) // STATICS // cyg_libc_atexit_handlers contains the functions to call. // cyg_libc_atexit_handlers_count contains the number of valid handlers // or you can consider the next free handler slot in // cyg_libc_atexit_handlers. static __atexit_fn_t cyg_libc_atexit_handlers[ CYGNUM_LIBC_ATEXIT_HANDLERS ]; static cyg_ucount32 cyg_libc_atexit_handlers_count; // FUNCTIONS externC void cyg_libc_invoke_atexit_handlers( void ) { CYG_REPORT_FUNCNAME( "cyg_libc_invoke_atexit_handlers"); CYG_REPORT_FUNCARGVOID(); cyg_ucount32 i; for (i=cyg_libc_atexit_handlers_count; i>0; --i) { CYG_TRACE1( true, "Calling function registered with atexit at addr %08x", cyg_libc_atexit_handlers[i-1] ); CYG_CHECK_FUNC_PTR( cyg_libc_atexit_handlers[i-1], "Function to call in atexit handler list " "isn't valid! Even though it was when " "entered!" ); (*cyg_libc_atexit_handlers[i-1])(); } // for CYG_REPORT_RETURN(); } // cyg_libc_invoke_atexit_handlers() externC int atexit( __atexit_fn_t func_to_register ) { CYG_REPORT_FUNCNAMETYPE( "atexit", "returning %d" ); CYG_REPORT_FUNCARG1XV( func_to_register ); CYG_CHECK_FUNC_PTR( func_to_register, "atexit() not passed a valid function argument!" ); // have we any slots left? if (cyg_libc_atexit_handlers_count >= sizeof(cyg_libc_atexit_handlers)/sizeof(__atexit_fn_t) ) { CYG_REPORT_RETVAL( 1 ); return 1; // failure } // if cyg_libc_atexit_handlers[cyg_libc_atexit_handlers_count++] = func_to_register; CYG_REPORT_RETVAL(0); return 0; } // atexit() #endif // ifdef CYGFUN_LIBC_ATEXIT // EOF atexit.cxx