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<div class="title">pool.c</div> </div>
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<div class="contents">
<a href="a00818.html">浏览该文件的文档.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "<a class="code" href="a03629.html">precomp.h</a>"</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#pragma hdrstop</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#ifdef POOL_TAGGING</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> PVOID <a class="code" href="a00899.html#a03d02ed8ee9ce61a7e12fc736296ec49">_UserReAllocPoolWithTag</a>(</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  PVOID pSrc,</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  ULONG uBytesSrc,</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  ULONG uBytes,</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  ULONG iTag)</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  PVOID pDest;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  pDest = UserAllocPool(uBytes, iTag);</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * If the block is shrinking, don't copy too many bytes.</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">if</span> (uBytesSrc > uBytes)</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  uBytesSrc = uBytes;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  UserFreePool(pSrc);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> }</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> PVOID <a class="code" href="a00899.html#a26faa09b610f8bf2e539882771871eba">_UserReAllocPoolWithQuotaTag</a>(</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  PVOID pSrc,</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  ULONG uBytesSrc,</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  ULONG uBytes,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  ULONG iTag)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  PVOID pDest;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  pDest = UserAllocPoolWithQuota(uBytes, iTag);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * If the block is shrinking, don't copy too many bytes.</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">if</span> (uBytesSrc > uBytes)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  uBytesSrc = uBytes;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  UserFreePool(pSrc);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="a00899.html#a11956f5d7192b9539f68c7ac50429541"> 70</a></span> PVOID <a class="code" href="a00818.html#a11956f5d7192b9539f68c7ac50429541">_UserReAllocPool</a>(</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  PVOID pSrc,</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  ULONG uBytesSrc,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  ULONG uBytes)</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  PVOID pDest;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  pDest = UserAllocPool(uBytes, TAG_NONE);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * If the block is shrinking, don't copy too many bytes.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">if</span> (uBytesSrc > uBytes)</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  uBytesSrc = uBytes;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  UserFreePool(pSrc);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="a00899.html#aad71a8cbb701859653df551e48aa6dea"> 94</a></span> PVOID <a class="code" href="a00818.html#aad71a8cbb701859653df551e48aa6dea">_UserReAllocPoolWithQuota</a>(</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  PVOID pSrc,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ULONG uBytesSrc,</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  ULONG uBytes)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> {</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  PVOID pDest;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  pDest = UserAllocPoolWithQuota(uBytes, TAG_NONE);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * If the block is shrinking, don't copy too many bytes.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">if</span> (uBytesSrc > uBytes)</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  uBytesSrc = uBytes;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  UserFreePool(pSrc);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> }</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#endif // POOL_TAGGING</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * Allocation routines for rtl functions</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  </div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="a00818.html#aa4c5df31e4454c1b801c9cc8dc49ed7f"> 124</a></span> PVOID <a class="code" href="a00818.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">UserRtlAllocMem</a>(</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  ULONG uBytes)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> UserAllocPool(uBytes, TAG_RTL);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> }</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="a00818.html#a11e5f86f5ec24b989012a66ead19ac73"> 130</a></span> VOID <a class="code" href="a00818.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a>(</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  PVOID pMem)</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> {</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  UserFreePool(pMem);</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div>
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<div class="ttc" id="aa00818_html_aa4c5df31e4454c1b801c9cc8dc49ed7f"><div class="ttname"><a href="a00818.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">UserRtlAllocMem</a></div><div class="ttdeci">PVOID UserRtlAllocMem(ULONG uBytes)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00124">pool.c:124</a></div></div>
<div class="ttc" id="aa00818_html_aad71a8cbb701859653df551e48aa6dea"><div class="ttname"><a href="a00818.html#aad71a8cbb701859653df551e48aa6dea">_UserReAllocPoolWithQuota</a></div><div class="ttdeci">PVOID _UserReAllocPoolWithQuota(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00094">pool.c:94</a></div></div>
<div class="ttc" id="aa03629_html"><div class="ttname"><a href="a03629.html">precomp.h</a></div></div>
<div class="ttc" id="aa00899_html_a03d02ed8ee9ce61a7e12fc736296ec49"><div class="ttname"><a href="a00899.html#a03d02ed8ee9ce61a7e12fc736296ec49">_UserReAllocPoolWithTag</a></div><div class="ttdeci">PVOID _UserReAllocPoolWithTag(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes, ULONG iTag)</div></div>
<div class="ttc" id="aa00818_html_a11956f5d7192b9539f68c7ac50429541"><div class="ttname"><a href="a00818.html#a11956f5d7192b9539f68c7ac50429541">_UserReAllocPool</a></div><div class="ttdeci">PVOID _UserReAllocPool(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00070">pool.c:70</a></div></div>
<div class="ttc" id="aa00899_html_a26faa09b610f8bf2e539882771871eba"><div class="ttname"><a href="a00899.html#a26faa09b610f8bf2e539882771871eba">_UserReAllocPoolWithQuotaTag</a></div><div class="ttdeci">PVOID _UserReAllocPoolWithQuotaTag(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes, ULONG iTag)</div></div>
<div class="ttc" id="aa00818_html_a11e5f86f5ec24b989012a66ead19ac73"><div class="ttname"><a href="a00818.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a></div><div class="ttdeci">VOID UserRtlFreeMem(PVOID pMem)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00130">pool.c:130</a></div></div>
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