| author | fturovic <frank.turovich@nokia.com> |
| Thu, 18 Feb 2010 15:11:20 -0600 | |
| branch | RCL_2_4 |
| changeset 990 | 5d016a880824 |
| parent 0 | fb279309251b |
| permissions | -rw-r--r-- |
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" |
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"http://www.w3.org/TR/html4/loose.dtd"> |
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<html><head> |
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<title>Current Process State</title> |
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<link href="sysdoc-eclipse.css" type="text/css" rel="stylesheet" media="screen"> |
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<link href="sysdoc-eclipse.css" type="text/css" rel="stylesheet" media="print"> |
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<link href="../../book.css" type="text/css" rel="stylesheet" > |
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<div class="Head1"> |
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<h2>Current Process State</h2> |
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</div> |
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<div> |
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<p>The current process is the process in whose address space the |
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current thread was executing when the fault occurred. The 15 lines starting at |
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line 33 of the <a href="CrashDebuggerInfoAboutKernel.guide.html">output</a> gives information relating to the current process. This |
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has some similarities with the current thread information:</p> |
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<p class="listing">TheCurrentProcess=64038d5c<br> |
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PROCESS at 64038d5c VPTR=f80342a4 AccessCount=6 Owner=00000000<br>Full name test2.exe<br>ExitInfo 3,0,<br>Flags a0000000, Handles 6403860c, Attributes 60010000<br>DataBssChunk 64039234, CodeSeg 6403919c<br>DllLock 64039044, Process Lock 64038eec SID 00000000<br>TempCodeSeg 00000000 CodeSeg 6403919c Capability 00000000 0003ffff<br>CodeSegs: Count=0<br>NumChunks=2<br>0: Chunk 64039234, run 00400000, access count 1<br>1: Chunk 6403613c, run 00600000, access count 1<br>Process shared IO buffers cookie 0000031d<br>Process has no shared IO buffers<br>Domain -1, DACR 55555507</p> |
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<p>The information includes: </p> |
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<ul> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_01" title="Extracting information about the kernel / Current process state / Process object and access count">Process object and access count</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_02" title="Extracting information about the kernel / Current process state / The process name">The process name</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_03" title="Extracting information about the kernel / Current process state / Exit information">Exit information</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_04" title="Extracting information about the kernel / Current process state / Process flags">Process flags</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_05" title="Extracting information about the kernel / Current thread state / Handles">Handles</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_06" title="Extracting information about the kernel / Current process state / Attributes">Attributes</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_07" title="Extracting information about the kernel / Current process state / Information about memory">Information about memory</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_08" title="Extracting information about the kernel / Current process state / Secure id">Secure id</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_09" title="Extracting information about the kernel / Current process state / Capability">Capability</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_10" title="Extracting information about the kernel / Current process state / Code segments">Code segments</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_11" title="Extracting information about the kernel / Current process state / Chunks owned by the process">Chunks owned by the process</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_12" title="Extracting information about the kernel / Current process state / Shared IO buffer information">Shared IO buffer information</a></p> |
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</li> |
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<li> |
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<p><a href="CrashDebuggerInfoAboutKernel.guide04.html#cps_13" title="Extracting information about the kernel / Current process state / Domain information">Domain information</a></p> |
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</li> |
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</ul> |
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</div><div class="Head3"> |
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<h3><a name="cps_01"></a>Process object and access count</h3> |
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</div><div> |
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<p class="CodeBlock">PROCESS at 64038d5c VPTR=f80342a4 AccessCount=6 Owner=00000000</p> |
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<p>The Process at field contains a pointer to the |
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DProcess object representing the process.</p> |
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<p>The AccessCount field contains the reference count |
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on the process object.</p> |
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<p>The owner field contains a pointer to the object |
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that owns this DProcess object.</p> |
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</div> |
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<div class="Head3"> |
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<h3><a name="cps_02" id="cps_02"></a>The process name</h3> |
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</div><div> |
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<p class="CodeBlock">Full name test2.exe</p> |
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<p>The Full name field gives the name of the process. |
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In this example, the name of the process is <b>test2.exe</b>.</p> |
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<p>See <a href="CrashDebuggerInfoAboutKernel.guide.html" title="Extracting information about the kernel / Current thread state / The thread name">the thread name</a>.</p> |
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</div><div class="Head3"> |
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<h3><a name="cps_03" id="cps_03"></a>Exit information</h3> |
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</div><div> |
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<p class="CodeBlock">ExitInfo 3,0,</p> |
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<p>The ExitInfo field contains the information that |
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characterises the process exit. In this example, the value is 3, meaning that |
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this process has not exited. See also TExitType.</p> |
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</div><div class="Head3"> |
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<h3><a name="cps_04" id="cps_04"></a>Process flags</h3> |
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</div><div> |
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<p class="CodeBlock">Flags a0000000, Handles 6403860c, Attributes 60010000</p> |
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<p>The Flags field contains information about the state |
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of the process. The possible values in this field are defined by the |
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KProcess... constants in u32std.h. While the symbols |
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are internal to Symbian OS, the following table summarises the values and their |
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meaning.</p> |
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<table cellpadding="1" border="0" cellspacing="0"><tr><td |
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class="TableWrap"><table cellpadding="5" cellspacing="1" |
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border="0"><tr valign="top"><td class="Cell"> |
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<p><b>Symbol</b></p></td><td class="Cell"> |
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<p><b>Value</b></p></td><td class="Cell"> |
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100 |
<p><b>Meaning</b></p></td></tr> |
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101 |
<tr valign="top"><td class="Cell"> |
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102 |
<p>KProcessFlagSystemCritical</p></td><td class="Cell"> |
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103 |
<p>0x00000004</p></td><td class="Cell"> |
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104 |
<p>A process panic causes the entire system to |
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105 |
reboot.</p></td></tr> |
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106 |
<tr valign="top"><td class="Cell"> |
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107 |
<p>KProcessFlagSystemPermanent</p></td><td class="Cell"> |
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108 |
<p>0x00000008</p></td><td class="Cell"> |
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109 |
<p>If the process exits for any reason, then this causes the |
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110 |
entire system to reboot.</p></td></tr> |
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111 |
<tr valign="top"><td class="Cell"> |
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112 |
<p>KProcessFlagPriorityControl</p></td><td class="Cell"> |
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113 |
<p> 0x40000000</p></td><td class="Cell"> |
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114 |
<p>If set, then other threads are allowed to change this |
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115 |
thread’s priority.</p></td></tr> |
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116 |
<tr valign="top"><td class="Cell"> |
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117 |
<p>KProcessFlagJustInTime</p></td><td class="Cell"> |
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118 |
<p>0x80000000</p></td><td class="Cell"> |
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119 |
<p>If set, then just-in-time debug is enabled for this |
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120 |
thread.</p></td></tr> |
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121 |
</table></td></tr></table> |
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122 |
</div><div class="Head3"> |
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123 |
<h3><a name="cps_05" id="cps_05"></a>Handles</h3> |
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124 |
</div><div> |
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125 |
<p class="CodeBlock">Flags a0000000, Handles 6403860c, Attributes 60010000</p> |
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126 |
<p>The Handles field contains the address of a |
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127 |
DObjectIx object that contains the handles owned by the |
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128 |
process.</p> |
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129 |
</div><div class="Head3"> |
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130 |
<h3><a name="cps_06" id="cps_06"></a>Attributes</h3> |
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131 |
</div><div> |
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132 |
<p class="CodeBlock">Flags a0000000, Handles 6403860c, Attributes 60010000</p> |
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133 |
<p>The Attributes field contains the attributes of the |
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134 |
process. Some are generic, as defined by |
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135 |
DProcess::TProcessAttributes, but others depend on the |
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136 |
memory model.</p> |
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137 |
</div> |
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138 |
<h3><a name="cps_07" id="cps_07"></a>Information about memory</h3> |
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139 |
<div class="Head3"></div> |
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140 |
<div> |
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141 |
<p class="CodeBlock">DataBssChunk 64039234, CodeSeg 6403919c</p> |
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142 |
<p>The DataBssChunk field contains a pointer to the |
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143 |
DChunk object representing the chunk that contains the process |
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144 |
data and .bss memory. Be aware that this is not the same as the |
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145 |
heap - heaps are allocated to threads, and chunk information is found in the |
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146 |
DThread object.</p> |
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147 |
<p>The CodeSeg field contains a pointer to the |
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148 |
DCodeSeg object that represents the code segment.</p> |
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149 |
</div><div class="Head3"> |
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150 |
<h3><a name="cps_08" id="cps_08"></a>Secure id</h3> |
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151 |
</div><div> |
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152 |
<p class="CodeBlock">DllLock 64039044, Process Lock 64038eec SID 00000000</p> |
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153 |
<p>The SID field contains the secure id of the |
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154 |
process.</p> |
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155 |
</div><div class="Head3"> |
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156 |
<h3><a name="cps_09" id="cps_09"></a>Capability</h3> |
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157 |
</div><div> |
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158 |
<p class="CodeBlock">TempCodeSeg 00000000 CodeSeg 6403919c Capability 00000000 0003ffff</p> |
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159 |
<p>The second four bytes of the Capability field contains the set of |
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160 |
bits that define the capability for this process. This defines what the process |
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161 |
can and cannot do.</p> |
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162 |
</div><div class="Head3"> |
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163 |
<h3><a name="cps_10" id="cps_10"></a>Code segments</h3> |
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164 |
</div><div> |
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165 |
<p class="CodeBlock">CodeSegs: Count=0</p> |
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166 |
<p>The CodeSegs: Count field contains the number of |
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167 |
code segments that have been dynamically loaded into the process. This will be |
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168 |
zero if the process is XIP.</p> |
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169 |
</div><div class="Head3"> |
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170 |
<h3><a name="cps_11" id="cps_11"></a>Chunks owned by the process</h3> |
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171 |
</div><div> |
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172 |
<p class="CodeBlock">NumChunks=2<br>0: Chunk 64039234, run 00400000, access count 1<br>1: Chunk 6403613c, run 00600000, access count 1</p> |
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173 |
<p>The NumChunks field contains the number of chunks owned by the |
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174 |
process.</p> |
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175 |
<p>Successive lines contain information about each chunk:</p> |
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176 |
<ul> |
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177 |
<li> |
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178 |
<p>the Chunk field contains the address of a kernel |
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179 |
DChunk object.</p> |
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180 |
</li> |
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181 |
<li> |
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182 |
<p>the run field contains the virtual address at |
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183 |
which the chunk resides when this is the current process.</p> |
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184 |
</li> |
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185 |
<li> |
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186 |
<p> the access count field contains the reference |
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187 |
count of the object.</p> |
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188 |
</li> |
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189 |
</ul> |
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190 |
</div><div class="Head3"> |
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191 |
<h3><a name="cps_12" id="cps_12"></a>Shared IO buffer information</h3> |
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192 |
</div> |
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193 |
<div> |
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194 |
<p class="CodeBlock">Process shared IO buffers cookie 0000031d<br>Process has no shared IO buffers</p> |
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195 |
<p>This is information about shared IO buffers. The cookie is only |
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196 |
really of interest to base engineers.</p> |
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197 |
</div> |
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198 |
<div class="Head3"> |
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199 |
<h3><a name="cps_13" id="cps_13"></a>Domain information</h3> |
|
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200 |
</div><div> |
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201 |
<p class="CodeBlock">Domain -1, DACR 55555507</p> |
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202 |
<p>This is ARM MMU-specific protection information. Processes have |
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203 |
domain -1 and DACR 0xFFFFFFFF.</p> |
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204 |
</div> |
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205 |
<h5>Related tasks</h5> |
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<li><a href="CrashDebuggerInfoAboutKernel.guide.html">Extracting Kernel Information</a> </li> |
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<li><a href="CrashDebuggerInfoAboutKernel.guide02.html">Scheduler State</a></li> |
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<li><a href="CrashDebuggerInfoAboutKernel.guide03.html">Current Thread State</a></li> |
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<li><a href="CrashDebuggerInfoAboutKernel.guide05.html">Current Data Section Process</a></li> |
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<div id="footer">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div> |
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