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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children
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1 //==========================================================================
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2 //
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3 // mbox.cxx
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4 //
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5 // Mbox mbox template class implementation
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6 //
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7 //==========================================================================
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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####
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40 //==========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): hmt
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44 // Contributors: hmt
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45 // Date: 1998-02-11
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46 // Purpose: Mbox implementation
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47 // Description: This file contains the implementations of the mbox class
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //==========================================================================
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52
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53 #include <pkgconf/kernel.h>
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54
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55 #include <cyg/kernel/ktypes.h> // base kernel types
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56 #include <cyg/infra/cyg_trac.h> // tracing macros
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57 #include <cyg/infra/cyg_ass.h> // assertion macros
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58 #include <cyg/kernel/instrmnt.h> // instrumentation
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59
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60 #include <cyg/kernel/thread.inl> // Cyg_Thread inlines
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61
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62 #include <cyg/kernel/mbox.hxx> // our own header
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63
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64 #ifndef CYGIMP_MBOXT_INLINE // force inlining
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65 #define CYGIMP_MBOXT_INLINE // of implementation
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66 #endif
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67
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68 #ifdef CYGIMP_MBOX_USE_MBOXT_PLAIN
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69 #include <cyg/kernel/mboxt.inl> // mbox template implementation
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70 #else
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71 #include <cyg/kernel/mboxt2.inl> // mbox template implementation
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72 #endif
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73
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74 // -------------------------------------------------------------------------
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75 // This module exists to cause exactly one instance of these functions to
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76 // exist; this is just like a vanilla class, except we use the template
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77 // class to acquire an implementation. The template functions are inlined
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78 // in each of these methods.
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79
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80
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81 // -------------------------------------------------------------------------
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82 // Constructor
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83
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84 Cyg_Mbox::Cyg_Mbox()
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85 {
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86 }
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87
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88 // -------------------------------------------------------------------------
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89 // Destructor
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90
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91 Cyg_Mbox::~Cyg_Mbox()
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92 {
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93 }
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94
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95 // -------------------------------------------------------------------------
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96 // debugging/assert function
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97
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98 #ifdef CYGDBG_USE_ASSERTS
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99 cyg_bool
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100 Cyg_Mbox::check_this(cyg_assert_class_zeal zeal) const
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101 {
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102 return m.check_this(zeal);
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103 }
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104 #endif
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105
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106 // -------------------------------------------------------------------------
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107 // now the members themselves:
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108
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109 void *
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110 Cyg_Mbox::get()
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111 {
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112 void * p;
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113 if ( ! m.get( p ) )
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114 return NULL;
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115 return p;
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116 }
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117
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118 #ifdef CYGFUN_KERNEL_THREADS_TIMER
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119 void *
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120 Cyg_Mbox::get( cyg_tick_count timeout )
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121 {
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122 void * p;
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123 if ( ! m.get( p, timeout ) )
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124 return NULL;
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125 return p;
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126 }
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127 #endif
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128
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129 void *
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130 Cyg_Mbox::tryget()
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131 {
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132 void * p;
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133 if ( ! m.tryget( p ) )
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134 return NULL;
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135 return p;
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136 }
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137
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138 #ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
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139 cyg_bool
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140 Cyg_Mbox::put( void *item )
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141 {
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142 return m.put( item );
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143 }
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144
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145 #ifdef CYGFUN_KERNEL_THREADS_TIMER
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146 cyg_bool
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147 Cyg_Mbox::put( void *item, cyg_tick_count timeout )
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148 {
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149 return m.put( item, timeout );
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150 }
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151 #endif
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152 #endif // CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
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153
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154 cyg_bool
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155 Cyg_Mbox::tryput( void *item )
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156 {
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157 return m.tryput( item );
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158 }
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159
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160 void *
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161 Cyg_Mbox::peek_item() // Get next item to be returned
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162 {
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163 void *p;
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164 if ( ! m.peek_item( p ) )
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165 return NULL;
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166 return p;
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167 }
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168
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169 // -------------------------------------------------------------------------
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170 // EOF mbox.cxx