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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"><a class="line" href="a00581.html"> 1</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="a00581.html">dblib_buffer_row</a> {</div><div class="line"><a name="l00003"></a><span class="lineno"><a class="line" href="a00581.html#ad49b82677ae277e5d5b0038f522da293"> 3</a></span>  <a class="code" href="a01141.html">TDSRESULTINFO</a> *<a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>;</div><div class="line"><a name="l00005"></a><span class="lineno"><a class="line" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0"> 5</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *<a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>;</div><div class="line"><a name="l00007"></a><span class="lineno"><a class="line" href="a00581.html#a015599345b266045d8bd3fac731e4675"> 7</a></span>  DBINT <a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a>;</div><div class="line"><a name="l00009"></a><span class="lineno"><a class="line" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a"> 9</a></span>  TDS_INT *<a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>;</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> } <a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a>;</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="keyword">static</span> <span class="keywordtype">void</span> buffer_struct_print(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf);</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">static</span> RETCODE buffer_save_row(<a class="code" href="a00901.html">DBPROCESS</a> *dbproc);</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">static</span> <a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a>* buffer_row_address(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> * buf, <span class="keywordtype">int</span> idx);</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">#if ENABLE_EXTRA_CHECKS</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">static</span> <span class="keywordtype">void</span> buffer_check(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf)</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> {</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="comment">/* no buffering */</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordflow">if</span> (buf->capacity == 0 || buf->capacity == 1) {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  assert(buf->head == 0);</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  assert(buf->tail == 0 || buf->tail == 1);</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  assert(buf->capacity == 1 || buf->rows == NULL);</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  }</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  assert(buf->capacity > 0);</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  assert(buf->head >= 0);</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  assert(buf->tail >= 0);</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  assert(buf->head < buf->capacity);</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  assert(buf->tail <= buf->capacity);</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">/* check empty */</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">if</span> (buf->tail == buf->capacity) {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  assert(buf->head == 0);</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">for</span> (i = 0; buf->rows && i < buf->capacity; ++i) {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  assert(buf->rows[i].<a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a> == NULL);</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  assert(buf->rows[i].<a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a> == NULL);</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  assert(buf->rows[i].<a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a> == NULL);</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  assert(buf->rows[i].<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a> == 0);</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (buf->rows == NULL)</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">/* check filled part */</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  i = buf->tail;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">do</span> {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  assert(i >= 0 && i < buf->capacity);</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  assert(buf->rows[i].<a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a> != NULL);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  assert(buf->rows[i].<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a> > 0);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  assert(buf->rows[i].<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a> <= buf->received);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  ++i;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">if</span> (i == buf->capacity)</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  i = 0;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  } <span class="keywordflow">while</span> (i != buf->head);</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">/* check empty part */</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (buf->head != buf->tail) {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  i = buf->head;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">do</span> {</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  assert(i >= 0 && i < buf->capacity);</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  assert(buf->rows[i].<a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a> == NULL);</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  assert(buf->rows[i].<a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a> == NULL);</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  assert(buf->rows[i].<a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a> == NULL);</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  assert(buf->rows[i].<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a> == 0);</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  ++i;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (i == buf->capacity)</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  i = 0;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  } <span class="keywordflow">while</span> (i != buf->tail);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</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> <span class="preprocessor">#define BUFFER_CHECK(buf) buffer_check(buf)</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#define BUFFER_CHECK(buf) do {} while(0)</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> buffer_count(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf)</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>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> (buf->head > buf->tail) ?</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  buf->head - buf->tail : <span class="comment">/* |...TddddH....| */</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  buf->capacity - (buf->tail - buf->head); <span class="comment">/* |ddddH....Tddd| */</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>  </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> buffer_is_full(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf)</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> {</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> buf->capacity == buffer_count(buf) && buf->capacity > 1;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> }</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> <span class="preprocessor">#ifndef NDEBUG</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> buffer_index_valid(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf, <span class="keywordtype">int</span> idx)</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>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">if</span> (buf->tail <= buf->head)</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">if</span> (buf->head <= idx && idx <= buf->tail)</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  </div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> (0 <= idx && idx <= buf->head)</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span> (buf->tail <= idx && idx < buf->capacity)</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#if 0 </span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  printf(<span class="stringliteral">"buffer_index_valid: idx = %d\n"</span>, idx);</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  buffer_struct_print(buf);</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> 0; </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> buffer_free_row(<a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a> *<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a>)</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> {</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>)</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  TDS_ZERO_FREE(row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>);</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>) {</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  tds_free_row(row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>, row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>);</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a> = NULL;</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  tds_free_results(row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>);</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a> = NULL;</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  row-><a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a> = 0;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> }</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment">/*</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> * Buffer is freed at slightly odd points, whenever</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> * capacity changes: </span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> * </span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> * 1. When setting capacity, to release prior buffer. </span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"> * 2. By dbresults. When called the second time, it has to </span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"> * release prior storage because the new resultset will have</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> * a different width. </span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * 3. By dbclose(), else open/close/open would leak. </span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> */</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> buffer_free(<a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf)</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> {</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (buf->rows != NULL) {</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">for</span> (i = 0; i < buf->capacity; ++i)</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  buffer_free_row(&buf->rows[i]);</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  TDS_ZERO_FREE(buf->rows);</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> }</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment">/*</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> * When no rows are currently buffered (and the buffer is allocated)</span></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> * set the indices to their initial positions.</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> */</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> buffer_reset(<a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf)</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> {</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  buf->head = 0;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  buf->current = buf->tail = buf->capacity;</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> }</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> buffer_idx_increment(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf, <span class="keywordtype">int</span> idx)</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> {</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">if</span> (++idx >= buf->capacity) { </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  idx = 0;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  }</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">return</span> idx;</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> }</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="keyword">static</span> <a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a>*</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> buffer_row_address(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> * buf, <span class="keywordtype">int</span> idx)</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span> {</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span> (idx < 0 || idx >= buf->capacity) {</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  printf(<span class="stringliteral">"idx is %d:\n"</span>, idx);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  buffer_struct_print(buf);</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span> &(buf->rows[idx]);</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="keyword">static</span> DBINT</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span> buffer_idx2row(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf, <span class="keywordtype">int</span> idx)</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> {</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">return</span> buffer_row_address(buf, idx)-><a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a>;</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span> }</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> buffer_row2idx(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf, <span class="keywordtype">int</span> row_number)</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> {</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">int</span> i = buf->tail;</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="preprocessor">#ifndef NDEBUG</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordtype">int</span> ii = 0;</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> (i == buf->capacity) {</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  assert (buf->head == 0);</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">return</span> -1; <span class="comment">/* no rows buffered */</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  </div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">/* </span></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="comment"> * March through the buffers from tail to head, stop if we find our row. </span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment"> * A full queue is indicated by tail == head (which means we can't write).</span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment"> */</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">do</span> {</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">if</span> (buffer_idx2row(buf, i) == row_number)</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordflow">return</span> i;</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  assert(ii++ < buf->capacity); <span class="comment">/* prevent infinite loop */</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  i = buffer_idx_increment(buf, i);</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  } <span class="keywordflow">while</span> (i != buf->head);</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> }</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> buffer_delete_rows(<a class="code" href="a00873.html">DBPROC_ROWBUF</a> * buf, <span class="keywordtype">int</span> count)</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> {</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">if</span> (count < 0 || count > buffer_count(buf)) {</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  count = buffer_count(buf);</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  }</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">for</span> (i=0; i < count; i++) {</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">if</span> (buf->tail < buf->capacity)</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  buffer_free_row(&buf->rows[buf->tail]);</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  buf->tail = buffer_idx_increment(buf, buf->tail);</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">/* </span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> * If deleting rows from the buffer catches the tail to the head, </span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment"> * return to the initial position. Otherwise, it will look full.</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment"> */</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (buf->tail == buf->head) {</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  buffer_reset(buf);</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  }</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="preprocessor">#if 0</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  buffer_struct_print(buf);</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> }</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> buffer_transfer_bound_data(<a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf, TDS_INT res_type, TDS_INT compute_id, <a class="code" href="a00901.html">DBPROCESS</a> * dbproc, <span class="keywordtype">int</span> idx)</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> {</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  BYTE *src;</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keyword">const</span> <a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a> *<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a>;</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <a class="code" href="a00434.html#ab45c291105027e69836002e1dd586141">tdsdump_log</a>(TDS_DBG_FUNC, <span class="stringliteral">"buffer_transfer_bound_data(%p %d %d %p %d)\n"</span>, buf, res_type, compute_id, dbproc, idx);</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  assert(buffer_index_valid(buf, idx));</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  row = buffer_row_address(buf, idx);</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  assert(row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>);</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span> </div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">for</span> (i = 0; i < row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>->num_cols; i++) {</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  TDS_SERVER_TYPE srctype;</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  DBINT srclen;</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <a class="code" href="a01133.html">TDSCOLUMN</a> *curcol = row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>->columns[i];</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>)</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  curcol-><a class="code" href="a01133.html#ada14ba479a67762fc1bef78910ef4beb">column_cur_size</a> = row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>[i];</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span> </div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  srclen = curcol-><a class="code" href="a01133.html#ada14ba479a67762fc1bef78910ef4beb">column_cur_size</a>;</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> </div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">if</span> (curcol->column_nullbind) {</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">if</span> (srclen < 0) {</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  *(DBINT *)(curcol->column_nullbind) = -1;</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  *(DBINT *)(curcol->column_nullbind) = 0;</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  }</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  }</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">if</span> (!curcol->column_varaddr)</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span> </div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">if</span> (srclen <= 0) {</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">if</span> (srclen == 0 || !curcol->column_nullbind)</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="a00077.html#aea6a865806d454280126de940478c214">dbgetnull</a>(dbproc, curcol->column_bindtype, curcol->column_bindlen,</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  (BYTE *) curcol->column_varaddr);</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  }</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  srctype = <a class="code" href="a00434.html#a0383d5dcb629582266a442f0f0dbd13a">tds_get_conversion_type</a>(curcol-><a class="code" href="a01133.html#a7f08ecedc5835a4e81129c6b2b493947">column_type</a>, curcol-><a class="code" href="a01133.html#a2c2756c00a1099c82d4cfa4da2894672">column_size</a>);</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span> </div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>)</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  src = &row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>[curcol->column_data - row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>->current_row];</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  src = curcol->column_data;</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">if</span> (is_blob_col(curcol))</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  src = (BYTE *) ((<a class="code" href="a01113.html">TDSBLOB</a> *) src)->textvalue;</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  copy_data_to_host_var(dbproc, srctype, src, srclen,</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  (BYTE *) curcol->column_varaddr, curcol->column_bindlen,</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  curcol->column_bindtype, (DBINT*) curcol->column_nullbind);</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  }</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="comment">/*</span></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment"> * This function always bumps current. Usually, it's called </span></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment"> * by dbnextrow(), so bumping current is a pretty obvious choice. </span></div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="comment"> * It can also be called by dbgetrow(), but that function also </span></div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span> <span class="comment"> * causes the bump. If you call dbgetrow() for row N, a subsequent</span></div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="comment"> * call to dbnextrow() yields N+1. </span></div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="comment"> */</span></div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  buf->current = buffer_idx_increment(buf, buf->current);</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> } <span class="comment">/* end buffer_transfer_bound_data() */</span></div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="keyword">static</span> <span class="keywordtype">void</span> </div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span> buffer_struct_print(<span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf)</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> {</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  assert(buf);</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  printf(<span class="stringliteral">"\t%d rows in buffer\n"</span>, buffer_count(buf));</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  </div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  printf(<span class="stringliteral">"\thead = %d\t"</span>, buf->head);</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  printf(<span class="stringliteral">"\ttail = %d\t"</span>, buf->tail);</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  printf(<span class="stringliteral">"\tcurrent = %d\n"</span>, buf->current);</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  printf(<span class="stringliteral">"\tcapacity = %d\t"</span>, buf->capacity);</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  printf(<span class="stringliteral">"\thead row number = %d\n"</span>, buf->received);</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span> }</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span> </div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="comment">/* * * Functions called only by public db-lib API take DBPROCESS* * */</span></div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span> </div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span> buffer_current_index(<span class="keyword">const</span> <a class="code" href="a00901.html">DBPROCESS</a> *dbproc)</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> {</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keyword">const</span> <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf = &dbproc->row_buf;</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="preprocessor">#if 0</span></div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  buffer_struct_print(buf);</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordflow">if</span> (buf->capacity <= 1) <span class="comment">/* no buffering */</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">if</span> (buf->current == buf->head || buf->current == buf->capacity)</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  </div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  assert(buf->current >= 0);</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  assert(buf->current < buf->capacity);</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordflow">if</span>( buf->tail < buf->head) {</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  assert(buf->tail < buf->current);</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  assert(buf->current < buf->head);</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">if</span> (buf->current > buf->head)</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  assert(buf->current > buf->tail);</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">return</span> buf->current;</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> }</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span> </div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="comment">/*</span></div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="comment"> * Normally called by dbsetopt() to prepare for buffering</span></div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="comment"> * Called with nrows == 0 by dbopen to safely set buf->rows to NULL. </span></div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="comment"> */</span></div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span> buffer_set_capacity(<a class="code" href="a00901.html">DBPROCESS</a> *dbproc, <span class="keywordtype">int</span> nrows)</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> {</div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf = &dbproc->row_buf;</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  </div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  buffer_free(buf);</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span> </div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  memset(buf, 0, <span class="keyword">sizeof</span>(<a class="code" href="a00873.html">DBPROC_ROWBUF</a>));</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">if</span> (0 == nrows) {</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  buf->capacity = 1;</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  }</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span> </div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  assert(0 < nrows);</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span> </div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  buf->capacity = nrows;</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  BUFFER_CHECK(buf);</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span> }</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span> </div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <span class="comment">/*</span></div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="comment"> * Called only by dbresults(); capacity must be >= 1. </span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span> <span class="comment"> * Sybase's documents say dbresults() cannot return FAIL if the prior calls worked, </span></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span> <span class="comment"> * which is a little strange, because (for FreeTDS, at least), dbresults</span></div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="comment"> * is when we learn about the result set's width. Without that information, we</span></div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span> <span class="comment"> * can't allocate memory for the buffer. But if we *fail* to allocate memory, </span></div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="comment"> * we're not to communicate it back to the caller? </span></div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="comment"> */</span></div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span> buffer_alloc(<a class="code" href="a00901.html">DBPROCESS</a> *dbproc)</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span> {</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf = &dbproc->row_buf;</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  </div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="comment">/* Call this function only after setting capacity. */</span></div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  assert(buf);</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  assert(buf->capacity > 0);</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  assert(buf->rows == NULL);</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  </div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  buf->rows = tds_new0(<a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a>, buf->capacity);</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  </div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  assert(buf->rows);</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  </div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  buffer_reset(buf);</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  </div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  buf->received = 0;</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span> }</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span> </div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="keyword">static</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span> buffer_add_row(<a class="code" href="a00901.html">DBPROCESS</a> *dbproc, <a class="code" href="a01141.html">TDSRESULTINFO</a> *<a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>)</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span> {</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf = &dbproc->row_buf;</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a> *<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a>;</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span> </div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  assert(buf->capacity >= 0);</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span> </div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordflow">if</span> (buffer_is_full(buf))</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span> </div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  row = buffer_row_address(buf, buf->head);</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span> </div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="comment">/* bump the row number, write it, and move the data to head */</span></div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>) {</div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  tds_free_row(row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>, row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>);</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  tds_free_results(row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>);</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  }</div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  row-><a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a> = ++buf->received;</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  ++resinfo->ref_count;</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a> = <a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>;</div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a> = NULL;</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>)</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  free(row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>);</div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a> = tds_new0(TDS_INT, resinfo->num_cols);</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="keywordflow">for</span> (i = 0; i < resinfo->num_cols; ++i)</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  row-><a class="code" href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">sizes</a>[i] = resinfo->columns[i]-><a class="code" href="a01133.html#ada14ba479a67762fc1bef78910ef4beb">column_cur_size</a>;</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span> </div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="comment">/* initial condition is head == 0 and tail == capacity */</span></div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  if (buf->tail == buf->capacity) {</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="comment">/* bumping this tail will set it to zero */</span></div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  assert(buf->head == 0);</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  buf->tail = 0;</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  }</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span> </div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="comment">/* update current, bump the head */</span></div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  buf->current = buf->head;</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  buf->head = buffer_idx_increment(buf, buf->head);</div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span> </div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="keywordflow">return</span> buf->current;</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span> }</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span> </div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="keyword">static</span> RETCODE</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span> buffer_save_row(<a class="code" href="a00901.html">DBPROCESS</a> *dbproc)</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span> {</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <a class="code" href="a00873.html">DBPROC_ROWBUF</a> *buf = &dbproc->row_buf;</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <a class="code" href="a00581.html">DBLIB_BUFFER_ROW</a> *<a class="code" href="a00581.html#a015599345b266045d8bd3fac731e4675">row</a>;</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keywordtype">int</span> idx = buf->head - 1;</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span> </div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keywordflow">if</span> (buf->capacity <= 1)</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keywordflow">return</span> SUCCEED;</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span> </div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordflow">if</span> (idx < 0)</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  idx = buf->capacity - 1;</div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordflow">if</span> (idx >= 0 && idx < buf->capacity) {</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  row = &buf->rows[idx];</div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="keywordflow">if</span> (row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a> && !row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a>) {</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  row-><a class="code" href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">row_data</a> = row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>->current_row;</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <a class="code" href="a00532.html#ga1224fb9277112dc2ce12531d2b73b145">tds_alloc_row</a>(row-><a class="code" href="a00581.html#ad49b82677ae277e5d5b0038f522da293">resinfo</a>);</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  }</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  }</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span> </div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordflow">return</span> SUCCEED;</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span> }</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span> </div><div class="ttc" id="a01133_html_a2c2756c00a1099c82d4cfa4da2894672"><div class="ttname"><a href="a01133.html#a2c2756c00a1099c82d4cfa4da2894672">tds_column::column_size</a></div><div class="ttdeci">TDS_INT column_size</div><div class="ttdoc">maximun size of data. </div><div class="ttdef"><b>Definition:</b> tds.h:732</div></div>
<div class="ttc" id="a00901_html"><div class="ttname"><a href="a00901.html">tds_dblib_dbprocess</a></div><div class="ttdef"><b>Definition:</b> dblib.h:120</div></div>
<div class="ttc" id="a00077_html_aea6a865806d454280126de940478c214"><div class="ttname"><a href="a00077.html#aea6a865806d454280126de940478c214">dbgetnull</a></div><div class="ttdeci">RETCODE dbgetnull(DBPROCESS *dbproc, int bindtype, int varlen, BYTE *varaddr)</div><div class="ttdef"><b>Definition:</b> dblib.c:540</div></div>
<div class="ttc" id="a01133_html_a7f08ecedc5835a4e81129c6b2b493947"><div class="ttname"><a href="a01133.html#a7f08ecedc5835a4e81129c6b2b493947">tds_column::column_type</a></div><div class="ttdeci">TDS_SERVER_TYPE column_type</div><div class="ttdoc">This type can be different from wire type because conversion (e.g. </div><div class="ttdef"><b>Definition:</b> tds.h:734</div></div>
<div class="ttc" id="a01141_html"><div class="ttname"><a href="a01141.html">tds_result_info</a></div><div class="ttdoc">Hold information for any results. </div><div class="ttdef"><b>Definition:</b> tds.h:803</div></div>
<div class="ttc" id="a00581_html_abe1aa9f8ea96dda1400654813e68130a"><div class="ttname"><a href="a00581.html#abe1aa9f8ea96dda1400654813e68130a">dblib_buffer_row::sizes</a></div><div class="ttdeci">TDS_INT * sizes</div><div class="ttdoc">save old sizes </div><div class="ttdef"><b>Definition:</b> buffering.h:9</div></div>
<div class="ttc" id="a00581_html"><div class="ttname"><a href="a00581.html">dblib_buffer_row</a></div><div class="ttdef"><b>Definition:</b> buffering.h:1</div></div>
<div class="ttc" id="a00581_html_ad49b82677ae277e5d5b0038f522da293"><div class="ttname"><a href="a00581.html#ad49b82677ae277e5d5b0038f522da293">dblib_buffer_row::resinfo</a></div><div class="ttdeci">TDSRESULTINFO * resinfo</div><div class="ttdoc">pointer to result informations </div><div class="ttdef"><b>Definition:</b> buffering.h:3</div></div>
<div class="ttc" id="a00434_html_ab45c291105027e69836002e1dd586141"><div class="ttname"><a href="a00434.html#ab45c291105027e69836002e1dd586141">tdsdump_log</a></div><div class="ttdeci">void tdsdump_log(const char *file, unsigned int level_line, const char *fmt,...)</div><div class="ttdoc">Write a message to the debug log. </div><div class="ttdef"><b>Definition:</b> log.c:353</div></div>
<div class="ttc" id="a00581_html_a015599345b266045d8bd3fac731e4675"><div class="ttname"><a href="a00581.html#a015599345b266045d8bd3fac731e4675">dblib_buffer_row::row</a></div><div class="ttdeci">DBINT row</div><div class="ttdoc">row number </div><div class="ttdef"><b>Definition:</b> buffering.h:7</div></div>
<div class="ttc" id="a01113_html"><div class="ttname"><a href="a01113.html">tds_blob</a></div><div class="ttdoc">Information about blobs (e.g. </div><div class="ttdef"><b>Definition:</b> tds.h:623</div></div>
<div class="ttc" id="a00532_html_ga1224fb9277112dc2ce12531d2b73b145"><div class="ttname"><a href="a00532.html#ga1224fb9277112dc2ce12531d2b73b145">tds_alloc_row</a></div><div class="ttdeci">TDSRET tds_alloc_row(TDSRESULTINFO *res_info)</div><div class="ttdoc">Allocate space for row store return NULL on out of memory. </div><div class="ttdef"><b>Definition:</b> mem.c:521</div></div>
<div class="ttc" id="a01133_html"><div class="ttname"><a href="a01133.html">tds_column</a></div><div class="ttdoc">Metadata about columns in regular and compute rows. </div><div class="ttdef"><b>Definition:</b> tds.h:726</div></div>
<div class="ttc" id="a00581_html_a5a057d6bbecfac1a85a9fbcd09eaf3a0"><div class="ttname"><a href="a00581.html#a5a057d6bbecfac1a85a9fbcd09eaf3a0">dblib_buffer_row::row_data</a></div><div class="ttdeci">unsigned char * row_data</div><div class="ttdoc">row data, NULL for resinfo->current_row </div><div class="ttdef"><b>Definition:</b> buffering.h:5</div></div>
<div class="ttc" id="a01133_html_ada14ba479a67762fc1bef78910ef4beb"><div class="ttname"><a href="a01133.html#ada14ba479a67762fc1bef78910ef4beb">tds_column::column_cur_size</a></div><div class="ttdeci">TDS_INT column_cur_size</div><div class="ttdoc">size written in variable (ie: char, text, binary). </div><div class="ttdef"><b>Definition:</b> tds.h:773</div></div>
<div class="ttc" id="a00873_html"><div class="ttname"><a href="a00873.html">tag_DBPROC_ROWBUF</a></div><div class="ttdef"><b>Definition:</b> dblib.h:49</div></div>
<div class="ttc" id="a00434_html_a0383d5dcb629582266a442f0f0dbd13a"><div class="ttname"><a href="a00434.html#a0383d5dcb629582266a442f0f0dbd13a">tds_get_conversion_type</a></div><div class="ttdeci">TDS_SERVER_TYPE tds_get_conversion_type(TDS_SERVER_TYPE srctype, int colsize)</div><div class="ttdoc">Return type suitable for conversions (convert all nullable types to fixed type) </div><div class="ttdef"><b>Definition:</b> tds_types.h:125</div></div>
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