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annotate packages/language/c/libc/time/current/src/time.cxx @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 6ed91473a1cd
children d2c90368aeef
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1 //========================================================================
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2 //
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3 // time.cxx
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4 //
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5 // ISO C date and time implementation for time()
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6 //
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7 //========================================================================
208
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
115
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40 //========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): jlarmour
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44 // Contributors: jlarmour
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45 // Date: 1999-03-04
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46 // Purpose: Provide implementation of ISO C time() as defined in
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47 // ISO C section 7.12.2.4
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48 // Description: This file provides an implementation of time() using
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49 // the "wallclock" device
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50 // Usage:
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51 //
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52 //####DESCRIPTIONEND####
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53 //
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54 //========================================================================
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55
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56 // CONFIGURATION
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57
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58 #include <pkgconf/libc_time.h> // C library configuration
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59
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60 // INCLUDES
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61
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62 #include <cyg/infra/cyg_type.h> // Common type definitions and support
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63 #include <cyg/infra/cyg_ass.h> // Assertion infrastructure
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64 #include <cyg/infra/cyg_trac.h> // Tracing infrastructure
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65 #include <time.h> // Main date and time definitions
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66
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67 #ifdef CYGSEM_LIBC_TIME_TIME_WORKING
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68 # include <cyg/io/wallclock.hxx> // Wallclock class definitions
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69 #endif
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70
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71 // FUNCTIONS
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72
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73 externC time_t
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74 time( time_t *timer )
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75 {
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76 CYG_REPORT_FUNCNAMETYPE("time", "returning %d");
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77 if (timer) // its allowed to be NULL
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78 CYG_CHECK_DATA_PTR( timer, "timer is not a valid pointer!");
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79 CYG_REPORT_FUNCARG1("timer = %08x", timer);
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80
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81 #ifdef CYGSEM_LIBC_TIME_TIME_WORKING
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82 time_t ret;
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83
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84 ret = (time_t) Cyg_WallClock::wallclock->get_current_time();
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85
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86 if (timer)
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87 *timer = ret;
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88
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89 CYG_REPORT_RETVAL(ret);
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90
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91 return ret;
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92
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93 #else // i.e. ifndef CYGSEM_LIBC_TIME_TIME_WORKING
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94
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95 if (timer)
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96 *timer = (time_t)-1;
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97 CYG_REPORT_RETVAL(-1);
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98 return (time_t)-1;
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99
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100 #endif
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101
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102 } // time()
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103
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104
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105 // EOF time.cxx