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skrzyp |
//========================================================================
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//
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// fwrite.cxx
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//
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// ANSI Stdio fwrite() function
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//
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//========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): jlarmour
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// Contributors:
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// Date: 2000-04-20
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// Purpose:
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// Description:
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// Usage:
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//
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//####DESCRIPTIONEND####
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//
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//========================================================================
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// CONFIGURATION
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#include <pkgconf/libc_stdio.h> // Configuration header
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// INCLUDES
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#include <cyg/infra/cyg_type.h> // Common project-wide type definitions
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#include <cyg/infra/cyg_ass.h> // Assertion support
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#include <cyg/infra/cyg_trac.h> // Tracing support
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#include <stddef.h> // NULL and size_t from compiler
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#include <stdio.h> // header for this file
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#include <errno.h> // error codes
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#include <cyg/libc/stdio/stream.hxx>// Cyg_StdioStream
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// FUNCTIONS
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externC size_t
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fwrite( const void *ptr, size_t object_size, size_t num_objects,
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FILE *stream ) __THROW
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{
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Cyg_StdioStream *real_stream = (Cyg_StdioStream *)stream;
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cyg_ucount32 written;
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Cyg_ErrNo err;
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CYG_REPORT_FUNCNAMETYPE( "fwrite", "wrote %d objects" );
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CYG_REPORT_FUNCARG4( "ptr=%08x, object_size=%d, num_objects=%d, "
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"stream=%08x", ptr, object_size, num_objects,
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stream );
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if ( (object_size==0) || (num_objects==0) ) {
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CYG_REPORT_RETVAL(0);
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return 0;
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} // if
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err = real_stream->write( (cyg_uint8 *)ptr, num_objects*object_size,
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&written );
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if (err) {
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real_stream->set_error( err );
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errno = err;
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} // if
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// we return the number of _objects_ written. Simple division is
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// sufficient as this returns the quotient rather than rounding
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CYG_REPORT_RETVAL( written/object_size );
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return written/object_size;
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} // fwrite()
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// EOF fwrite.cxx
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