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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
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children e0c0827131d1
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435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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1 # ====================================================================
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2 #
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3 # assert.cdl
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4 #
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5 # Infrastructure debugging/assertion configuration data
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6 #
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7 # ====================================================================
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8 #####COPYRIGHTBEGIN####
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9 #
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10 # -------------------------------------------
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11 # The contents of this file are subject to the Red Hat eCos Public License
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12 # Version 1.1 (the "License"); you may not use this file except in
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13 # compliance with the License. You may obtain a copy of the License at
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14 # http://www.redhat.com/
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15 #
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16 # Software distributed under the License is distributed on an "AS IS"
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17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 # License for the specific language governing rights and limitations under
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19 # the License.
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20 #
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21 # The Original Code is eCos - Embedded Configurable Operating System,
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22 # released September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Red Hat.
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25 # Portions created by Red Hat are
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26 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 # All Rights Reserved.
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28 # -------------------------------------------
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29 #
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30 #####COPYRIGHTEND####
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31 # ====================================================================
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32 ######DESCRIPTIONBEGIN####
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33 #
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34 # Author(s): jskov
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35 # Original data: bartv,hmt
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36 # Contributors:
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37 # Date: 1999-07-02
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38 #
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39 #####DESCRIPTIONEND####
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40 #
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41 # ====================================================================
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42
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43 # The eCos system uses a number of more specialised assertions in
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44 # addition to a conventional ASSERT() macro. By default these are all
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45 # enabled when general assertions are enabled, but it is possible to
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46 # suppress some of them and thus reduce the size of the generated code.
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47 #
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48 # Preconditions check that a condition holds true at the beginning of
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49 # a piece of code, typically at the start of a function. For example a
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50 # kernel function might have a precondition that it is only invoked
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51 # when the scheduler is locked.
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52 #
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53 # Postconditions check that a condition holds at the end of a piece of
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54 # code, typically at the point where a function returns. For example
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55 # at the end of scheduler initialisation there could be a
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56 # postcondition that there is at least one runnable thread, the idle
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57 # thread.
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58 #
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59 # Loop invariants check that a condition holds on every iteration of
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60 # a loop. For example the deferred service support code in the kernel
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61 # could have a loop invariant that interrupts are enabled whenever
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62 # there are still DSR's pending.
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63
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64 cdl_option CYGDBG_INFRA_DEBUG_PRECONDITIONS {
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65 display "Preconditions"
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66 default_value 1
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67 description "
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68 This option allows individual control of preconditions.
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69 A precondition is one type of assert, which it is
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70 useful to control separately from more general asserts.
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71 The function is CYG_PRECONDITION(condition,msg)."
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72 }
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73 cdl_option CYGDBG_INFRA_DEBUG_POSTCONDITIONS {
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74 display "Postconditions"
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75 default_value 1
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76 description "
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77 This option allows individual control of postconditions.
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78 A postcondition is one type of assert, which it is
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79 useful to control separately from more general asserts.
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80 The function is CYG_POSTCONDITION(condition,msg)."
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81 }
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82 cdl_option CYGDBG_INFRA_DEBUG_LOOP_INVARIANTS {
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83 display "Loop invariants"
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84 default_value 1
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85 description "
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86 This option allows individual control of loop invariants.
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87 A loop invariant is one type of assert, which it is
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88 useful to control separately from more general asserts,
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89 particularly since a loop invariant is typically evaluated
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90 a great many times when used correctly.
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91 The function is CYG_LOOP_INVARIANT(condition,msg)."
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92 }
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93
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94 cdl_option CYGDBG_INFRA_DEBUG_ASSERT_MESSAGE {
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95 display "Use assert text"
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96 default_value 1
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97 description "
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98 All assertions within eCos contain a text message
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99 which should give some information about the condition
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100 being tested.
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101 These text messages will end up being embedded in the
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102 application image and hence there is a significant penalty
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103 in terms of image size.
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104 It is possible to suppress the use of these messages by
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105 disabling this option.
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106 This results in smaller code size, but there is less
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107 human-readable information if an assertion actually gets
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108 triggered."
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109 }