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  73. <a href="impl_2codegen_2proto__buffer__writer_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
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  75. <div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright 2018 gRPC authors.</span></div>
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  81. <div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *     http://www.apache.org/licenses/LICENSE-2.0</span></div>
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    90. 

  90. <div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160; </div>
    91. 

  91. <div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#ifndef GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_WRITER_H</span></div>
    92. 

  92. <div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#define GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_WRITER_H</span></div>
    93. 

  93. <div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160; </div>
    94. 

  94. <div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div>
    95. 

  95. <div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; </div>
    96. 

  96. <div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpc__types_8h.html">grpc/impl/codegen/grpc_types.h</a>&gt;</span></div>
    97. 

  97. <div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpc_2impl_2codegen_2slice_8h.html">grpc/impl/codegen/slice.h</a>&gt;</span></div>
    98. 

  98. <div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpcpp_2impl_2codegen_2byte__buffer_8h.html">grpcpp/impl/codegen/byte_buffer.h</a>&gt;</span></div>
    99. 

  99. <div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpcpp_2impl_2codegen_2config__protobuf_8h.html">grpcpp/impl/codegen/config_protobuf.h</a>&gt;</span></div>
    100. 

  100. <div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html">grpcpp/impl/codegen/core_codegen_interface.h</a>&gt;</span></div>
    101. 

  101. <div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpcpp_2impl_2codegen_2serialization__traits_8h.html">grpcpp/impl/codegen/serialization_traits.h</a>&gt;</span></div>
    102. 

  102. <div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="grpcpp_2impl_2codegen_2status_8h.html">grpcpp/impl/codegen/status.h</a>&gt;</span></div>
    103. 

  103. <div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160; </div>
    104. 

  104. <div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160; </div>
    105. 

  105. <div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacegrpc.html">grpc</a> {</div>
    106. 

  106. <div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160; </div>
    107. 

  107. <div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">extern</span> CoreCodegenInterface* <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>;</div>
    108. 

  108. <div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160; </div>
    109. 

  109. <div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">// Forward declaration for testing use only</span></div>
    110. 

  110. <div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">namespace </span>internal {</div>
    111. 

  111. <div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="keyword">class </span>ProtoBufferWriterPeer;</div>
    112. 

  112. <div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;}  <span class="comment">// namespace internal</span></div>
    113. 

  113. <div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160; </div>
    114. 

  114. <div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespacegrpc.html#a9e62f19b6ee525513cb6259988c319a6">   44</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="namespacegrpc.html#a9e62f19b6ee525513cb6259988c319a6">kProtoBufferWriterMaxBufferLength</a> = 1024 * 1024;</div>
    115. 

  115. <div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
    116. 

  116. <div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html">   53</a></span>&#160;<span class="keyword">class </span><a class="code" href="classgrpc_1_1_proto_buffer_writer.html">ProtoBufferWriter</a> : <span class="keyword">public</span> <a class="code" href="namespacegrpc_1_1protobuf_1_1io.html#aafcf83341d287d00418952374bc82ce1">::grpc::protobuf::io::ZeroCopyOutputStream</a> {</div>
    117. 

  117. <div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160; <span class="keyword">public</span>:</div>
    118. 

  118. <div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#a2197d65d98500d488c8edbca3d4e77e2">   60</a></span>&#160;  <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#a2197d65d98500d488c8edbca3d4e77e2">ProtoBufferWriter</a>(<a class="code" href="classgrpc_1_1_byte_buffer.html">ByteBuffer</a>* byte_buffer, <span class="keywordtype">int</span> block_size, <span class="keywordtype">int</span> total_size)</div>
    119. 

  119. <div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;      : block_size_(block_size),</div>
    120. 

  120. <div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        total_size_(total_size),</div>
    121. 

  121. <div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        byte_count_(0),</div>
    122. 

  122. <div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        have_backup_(false) {</div>
    123. 

  123. <div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <a class="code" href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html#a39c1421e7081b57c503487659e2653a5">GPR_CODEGEN_ASSERT</a>(!byte_buffer-&gt;<a class="code" href="classgrpc_1_1_byte_buffer.html#aea6bcd0d3c70fc14158df68c59dc82d4">Valid</a>());</div>
    124. 

  124. <div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <a class="code" href="structgrpc__byte__buffer.html">grpc_byte_buffer</a>* bp =</div>
    125. 

  125. <div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#a877281fd72eed1674efec7cd71b361e2">grpc_raw_byte_buffer_create</a>(<span class="keyword">nullptr</span>, 0);</div>
    126. 

  126. <div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    byte_buffer-&gt;set_buffer(bp);</div>
    127. 

  127. <div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    slice_buffer_ = &amp;bp-&gt;<a class="code" href="structgrpc__byte__buffer.html#a3bf95e73510f5a401cd97c26144c1628">data</a>.<a class="code" href="uniongrpc__byte__buffer_1_1grpc__byte__buffer__data.html#aac38c706315d24458e43986d153f0bf8">raw</a>.<a class="code" href="structgrpc__byte__buffer_1_1grpc__byte__buffer__data_1_1grpc__compressed__buffer.html#a89f407381d073054e2227572dd920f37">slice_buffer</a>;</div>
    128. 

  128. <div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  }</div>
    129. 

  129. <div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160; </div>
    130. 

  130. <div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#af812e0ef5b16adce1c70b764f46b71c1">   73</a></span>&#160;  <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#af812e0ef5b16adce1c70b764f46b71c1">~ProtoBufferWriter</a>()<span class="keyword"> override </span>{</div>
    131. 

  131. <div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keywordflow">if</span> (have_backup_) {</div>
    132. 

  132. <div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;      <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#a5586cf5238402be3fba724b28cf1da9c">grpc_slice_unref</a>(backup_slice_);</div>
    133. 

  133. <div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    }</div>
    134. 

  134. <div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  }</div>
    135. 

  135. <div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160; </div>
    136. 

  136. <div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#ad71ffbb8f1f6e5bfedba73fb8bcde0ff">   81</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#ad71ffbb8f1f6e5bfedba73fb8bcde0ff">Next</a>(<span class="keywordtype">void</span>** data, <span class="keywordtype">int</span>* size)<span class="keyword"> override </span>{</div>
    137. 

  137. <div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="comment">// Protobuf should not ask for more memory than total_size_.</span></div>
    138. 

  138. <div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <a class="code" href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html#a39c1421e7081b57c503487659e2653a5">GPR_CODEGEN_ASSERT</a>(byte_count_ &lt; total_size_);</div>
    139. 

  139. <div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <span class="comment">// 1. Use the remaining backup slice if we have one</span></div>
    140. 

  140. <div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="comment">// 2. Otherwise allocate a slice, up to the remaining length needed</span></div>
    141. 

  141. <div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="comment">//    or our maximum allocation size</span></div>
    142. 

  142. <div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="comment">// 3. Provide the slice start and size available</span></div>
    143. 

  143. <div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    <span class="comment">// 4. Add the slice being returned to the slice buffer</span></div>
    144. 

  144. <div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <span class="keywordtype">size_t</span> remain = <span class="keyword">static_cast&lt;</span><span class="keywordtype">size_t</span><span class="keyword">&gt;</span>(total_size_ - byte_count_);</div>
    145. 

  145. <div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <span class="keywordflow">if</span> (have_backup_) {</div>
    146. 

  146. <div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;      slice_ = backup_slice_;</div>
    147. 

  147. <div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;      have_backup_ = <span class="keyword">false</span>;</div>
    148. 

  148. <div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;      <span class="keywordflow">if</span> (<a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a>(slice_) &gt; remain) {</div>
    149. 

  149. <div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        <a class="code" href="grpc_2impl_2codegen_2slice_8h.html#a6791fa7be0a1a9144e005cfea7baea84">GRPC_SLICE_SET_LENGTH</a>(slice_, remain);</div>
    150. 

  150. <div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;      }</div>
    151. 

  151. <div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    } <span class="keywordflow">else</span> {</div>
    152. 

  152. <div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;      <span class="comment">// When less than a whole block is needed, only allocate that much.</span></div>
    153. 

  153. <div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;      <span class="comment">// But make sure the allocated slice is not inlined.</span></div>
    154. 

  154. <div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;      <span class="keywordtype">size_t</span> allocate_length =</div>
    155. 

  155. <div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;          remain &gt; <span class="keyword">static_cast&lt;</span><span class="keywordtype">size_t</span><span class="keyword">&gt;</span>(block_size_) ? block_size_ : remain;</div>
    156. 

  156. <div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;      slice_ = <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#a937d192d91be97e09b9eafd51fb20cf6">grpc_slice_malloc</a>(</div>
    157. 

  157. <div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;          allocate_length &gt; <a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae65fc74cb3afbcd3299a1c93f90bae20">GRPC_SLICE_INLINED_SIZE</a></div>
    158. 

  158. <div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;              ? allocate_length</div>
    159. 

  159. <div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;              : <a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae65fc74cb3afbcd3299a1c93f90bae20">GRPC_SLICE_INLINED_SIZE</a> + 1);</div>
    160. 

  160. <div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    }</div>
    161. 

  161. <div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    *data = <a class="code" href="grpc_2impl_2codegen_2slice_8h.html#a8a15783c251cdeb18c3f8b0ad41d0352">GRPC_SLICE_START_PTR</a>(slice_);</div>
    162. 

  162. <div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="comment">// On win x64, int is only 32bit</span></div>
    163. 

  163. <div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    <a class="code" href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html#a39c1421e7081b57c503487659e2653a5">GPR_CODEGEN_ASSERT</a>(<a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a>(slice_) &lt;= INT_MAX);</div>
    164. 

  164. <div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    byte_count_ += * size = <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(<a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a>(slice_));</div>
    165. 

  165. <div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#aed5bbc8685a952a6bf390f804694073d">grpc_slice_buffer_add</a>(slice_buffer_, slice_);</div>
    166. 

  166. <div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
    167. 

  167. <div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  }</div>
    168. 

  168. <div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160; </div>
    169. 

  169. <div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#afebe85844c62f4aa47cc4e6e19af8400">  118</a></span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#afebe85844c62f4aa47cc4e6e19af8400">BackUp</a>(<span class="keywordtype">int</span> count)<span class="keyword"> override </span>{</div>
    170. 

  170. <div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <a class="code" href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html#a39c1421e7081b57c503487659e2653a5">GPR_CODEGEN_ASSERT</a>(count &lt;= <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(<a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a>(slice_)));</div>
    171. 

  171. <div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#ae3bf7bcb987209890cb897c3ca2e4050">grpc_slice_buffer_pop</a>(slice_buffer_);</div>
    172. 

  172. <div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <span class="keywordflow">if</span> (<span class="keyword">static_cast&lt;</span><span class="keywordtype">size_t</span><span class="keyword">&gt;</span>(count) == <a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a>(slice_)) {</div>
    173. 

  173. <div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;      backup_slice_ = slice_;</div>
    174. 

  174. <div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    } <span class="keywordflow">else</span> {</div>
    175. 

  175. <div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;      backup_slice_ = <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#a22fbbdfe33fc84ed2b0bdda90a9331c2">grpc_slice_split_tail</a>(</div>
    176. 

  176. <div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;          &amp;slice_, <a class="code" href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a>(slice_) - count);</div>
    177. 

  177. <div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;      <a class="code" href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">g_core_codegen_interface</a>-&gt;<a class="code" href="classgrpc_1_1_core_codegen_interface.html#aed5bbc8685a952a6bf390f804694073d">grpc_slice_buffer_add</a>(slice_buffer_, slice_);</div>
    178. 

  178. <div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    }</div>
    179. 

  179. <div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="comment">// It&#39;s dangerous to keep an inlined grpc_slice as the backup slice, since</span></div>
    180. 

  180. <div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="comment">// on a following Next() call, a reference will be returned to this slice</span></div>
    181. 

  181. <div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="comment">// via GRPC_SLICE_START_PTR, which will not be an address held by</span></div>
    182. 

  182. <div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    <span class="comment">// slice_buffer_.</span></div>
    183. 

  183. <div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    have_backup_ = backup_slice_.<a class="code" href="structgrpc__slice.html#a467ef319d024f1897c7ff3bdadb78493">refcount</a> != <span class="keyword">nullptr</span>;</div>
    184. 

  184. <div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    byte_count_ -= count;</div>
    185. 

  185. <div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  }</div>
    186. 

  186. <div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160; </div>
    187. 

  187. <div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#af93269371a674dd4feac4ed90a3171f5">  141</a></span>&#160;  int64_t <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#af93269371a674dd4feac4ed90a3171f5">ByteCount</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> byte_count_; }</div>
    188. 

  188. <div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160; </div>
    189. 

  189. <div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;  <span class="comment">// These protected members are needed to support internal optimizations.</span></div>
    190. 

  190. <div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="comment">// they expose internal bits of grpc core that are NOT stable. If you have</span></div>
    191. 

  191. <div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;  <span class="comment">// a use case needs to use one of these functions, please send an email to</span></div>
    192. 

  192. <div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;  <span class="comment">// https://groups.google.com/forum/#!forum/grpc-io.</span></div>
    193. 

  193. <div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160; <span class="keyword">protected</span>:</div>
    194. 

  194. <div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#a2735ca72a039d465dd538c6f3fa06e20">  148</a></span>&#160;  <a class="code" href="structgrpc__slice__buffer.html">grpc_slice_buffer</a>* <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#a2735ca72a039d465dd538c6f3fa06e20">slice_buffer</a>() { <span class="keywordflow">return</span> slice_buffer_; }</div>
    195. 

  195. <div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#a656f1f4835a8f4e2944cb6ce92454c8b">  149</a></span>&#160;  <span class="keywordtype">void</span> <a class="code" href="classgrpc_1_1_proto_buffer_writer.html#a656f1f4835a8f4e2944cb6ce92454c8b">set_byte_count</a>(int64_t byte_count) { byte_count_ = byte_count; }</div>
    196. 

  196. <div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160; </div>
    197. 

  197. <div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160; <span class="keyword">private</span>:</div>
    198. 

  198. <div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  <span class="comment">// friend for testing purposes only</span></div>
    199. 

  199. <div class="line"><a name="l00153"></a><span class="lineno"><a class="line" href="classgrpc_1_1_proto_buffer_writer.html#a7bb6d66e5a6bcf0eee76cb156ab598d4">  153</a></span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classgrpc_1_1_proto_buffer_writer.html#a7bb6d66e5a6bcf0eee76cb156ab598d4">internal::ProtoBufferWriterPeer</a>;</div>
    200. 

  200. <div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">int</span> block_size_;  </div>
    201. 

  201. <div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">int</span> total_size_;  </div>
    202. 

  202. <div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  int64_t byte_count_;    </div>
    203. 

  203. <div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  <a class="code" href="structgrpc__slice__buffer.html">grpc_slice_buffer</a>*</div>
    204. 

  204. <div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;      slice_buffer_;  </div>
    205. 

  205. <div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="keywordtype">bool</span> have_backup_;  </div>
    206. 

  206. <div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;  <a class="code" href="structgrpc__slice.html">grpc_slice</a> backup_slice_;  </div>
    207. 

  207. <div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  <a class="code" href="structgrpc__slice.html">grpc_slice</a> slice_;         </div>
    208. 

  208. <div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;};</div>
    209. 

  209. <div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160; </div>
    210. 

  210. <div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;}  <span class="comment">// namespace grpc</span></div>
    211. 

  211. <div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160; </div>
    212. 

  212. <div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="preprocessor">#endif  // GRPCPP_IMPL_CODEGEN_PROTO_BUFFER_WRITER_H</span></div>
    213. 

  213. </div><!-- fragment --></div><!-- contents -->
    214. 

  214. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html">grpc::ProtoBufferWriter</a></div><div class="ttdoc">This is a specialization of the protobuf class ZeroCopyOutputStream.</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:53</div></div>
    215. 

  215. <div class="ttc" id="aclassgrpc_1_1_core_codegen_interface_html_a22fbbdfe33fc84ed2b0bdda90a9331c2"><div class="ttname"><a href="classgrpc_1_1_core_codegen_interface.html#a22fbbdfe33fc84ed2b0bdda90a9331c2">grpc::CoreCodegenInterface::grpc_slice_split_tail</a></div><div class="ttdeci">virtual grpc_slice grpc_slice_split_tail(grpc_slice *s, size_t split)=0</div></div>
    216. 

  216. <div class="ttc" id="agrpc_2impl_2codegen_2slice_8h_html_ae965fb2ee1a646253cdbd49d82b0b6c5"><div class="ttname"><a href="grpc_2impl_2codegen_2slice_8h.html#ae965fb2ee1a646253cdbd49d82b0b6c5">GRPC_SLICE_LENGTH</a></div><div class="ttdeci">#define GRPC_SLICE_LENGTH(slice)</div><div class="ttdef"><b>Definition:</b> slice.h:99</div></div>
    217. 

  217. <div class="ttc" id="astructgrpc__slice_html_a467ef319d024f1897c7ff3bdadb78493"><div class="ttname"><a href="structgrpc__slice.html#a467ef319d024f1897c7ff3bdadb78493">grpc_slice::refcount</a></div><div class="ttdeci">struct grpc_slice_refcount * refcount</div><div class="ttdef"><b>Definition:</b> slice.h:61</div></div>
    218. 

  218. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_ad71ffbb8f1f6e5bfedba73fb8bcde0ff"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#ad71ffbb8f1f6e5bfedba73fb8bcde0ff">grpc::ProtoBufferWriter::Next</a></div><div class="ttdeci">bool Next(void **data, int *size) override</div><div class="ttdoc">Give the proto library the next buffer of bytes and its size.</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:81</div></div>
    219. 

  219. <div class="ttc" id="anamespacegrpc_html"><div class="ttname"><a href="namespacegrpc.html">grpc</a></div><div class="ttdoc">An Alarm posts the user-provided tag to its associated completion queue or invokes the user-provided ...</div><div class="ttdef"><b>Definition:</b> alarm.h:33</div></div>
    220. 

  220. <div class="ttc" id="agrpcpp_2impl_2codegen_2status_8h_html"><div class="ttname"><a href="grpcpp_2impl_2codegen_2status_8h.html">status.h</a></div></div>
    221. 

  221. <div class="ttc" id="aclassgrpc_1_1_core_codegen_interface_html_aed5bbc8685a952a6bf390f804694073d"><div class="ttname"><a href="classgrpc_1_1_core_codegen_interface.html#aed5bbc8685a952a6bf390f804694073d">grpc::CoreCodegenInterface::grpc_slice_buffer_add</a></div><div class="ttdeci">virtual void grpc_slice_buffer_add(grpc_slice_buffer *sb, grpc_slice slice)=0</div></div>
    222. 

  222. <div class="ttc" id="anamespacegrpc_1_1protobuf_1_1io_html_aafcf83341d287d00418952374bc82ce1"><div class="ttname"><a href="namespacegrpc_1_1protobuf_1_1io.html#aafcf83341d287d00418952374bc82ce1">grpc::protobuf::io::ZeroCopyOutputStream</a></div><div class="ttdeci">::google::protobuf::io::ZeroCopyOutputStream ZeroCopyOutputStream</div><div class="ttdef"><b>Definition:</b> config_protobuf.h:98</div></div>
    223. 

  223. <div class="ttc" id="auniongrpc__byte__buffer_1_1grpc__byte__buffer__data_html_aac38c706315d24458e43986d153f0bf8"><div class="ttname"><a href="uniongrpc__byte__buffer_1_1grpc__byte__buffer__data.html#aac38c706315d24458e43986d153f0bf8">grpc_byte_buffer::grpc_byte_buffer_data::raw</a></div><div class="ttdeci">struct grpc_byte_buffer::grpc_byte_buffer_data::grpc_compressed_buffer raw</div></div>
    224. 

  224. <div class="ttc" id="agrpcpp_2impl_2codegen_2serialization__traits_8h_html"><div class="ttname"><a href="grpcpp_2impl_2codegen_2serialization__traits_8h.html">serialization_traits.h</a></div></div>
    225. 

  225. <div class="ttc" id="agrpcpp_2impl_2codegen_2core__codegen__interface_8h_html"><div class="ttname"><a href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html">core_codegen_interface.h</a></div></div>
    226. 

  226. <div class="ttc" id="agrpcpp_2impl_2codegen_2byte__buffer_8h_html"><div class="ttname"><a href="grpcpp_2impl_2codegen_2byte__buffer_8h.html">byte_buffer.h</a></div></div>
    227. 

  227. <div class="ttc" id="agrpc__types_8h_html"><div class="ttname"><a href="grpc__types_8h.html">grpc_types.h</a></div></div>
    228. 

  228. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_a2197d65d98500d488c8edbca3d4e77e2"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#a2197d65d98500d488c8edbca3d4e77e2">grpc::ProtoBufferWriter::ProtoBufferWriter</a></div><div class="ttdeci">ProtoBufferWriter(ByteBuffer *byte_buffer, int block_size, int total_size)</div><div class="ttdoc">Constructor for this derived class.</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:60</div></div>
    229. 

  229. <div class="ttc" id="astructgrpc__byte__buffer_html"><div class="ttname"><a href="structgrpc__byte__buffer.html">grpc_byte_buffer</a></div><div class="ttdef"><b>Definition:</b> grpc_types.h:40</div></div>
    230. 

  230. <div class="ttc" id="aclassgrpc_1_1_byte_buffer_html"><div class="ttname"><a href="classgrpc_1_1_byte_buffer.html">grpc::ByteBuffer</a></div><div class="ttdoc">A sequence of bytes.</div><div class="ttdef"><b>Definition:</b> byte_buffer.h:61</div></div>
    231. 

  231. <div class="ttc" id="astructgrpc__slice_html"><div class="ttname"><a href="structgrpc__slice.html">grpc_slice</a></div><div class="ttdoc">A grpc_slice s, if initialized, represents the byte range s.bytes[0..s.length-1].</div><div class="ttdef"><b>Definition:</b> slice.h:60</div></div>
    232. 

  232. <div class="ttc" id="aclassgrpc_1_1_core_codegen_interface_html_a877281fd72eed1674efec7cd71b361e2"><div class="ttname"><a href="classgrpc_1_1_core_codegen_interface.html#a877281fd72eed1674efec7cd71b361e2">grpc::CoreCodegenInterface::grpc_raw_byte_buffer_create</a></div><div class="ttdeci">virtual grpc_byte_buffer * grpc_raw_byte_buffer_create(grpc_slice *slice, size_t nslices)=0</div></div>
    233. 

  233. <div class="ttc" id="anamespacegrpc_html_a9e62f19b6ee525513cb6259988c319a6"><div class="ttname"><a href="namespacegrpc.html#a9e62f19b6ee525513cb6259988c319a6">grpc::kProtoBufferWriterMaxBufferLength</a></div><div class="ttdeci">const int kProtoBufferWriterMaxBufferLength</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:44</div></div>
    234. 

  234. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_a2735ca72a039d465dd538c6f3fa06e20"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#a2735ca72a039d465dd538c6f3fa06e20">grpc::ProtoBufferWriter::slice_buffer</a></div><div class="ttdeci">grpc_slice_buffer * slice_buffer()</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:148</div></div>
    235. 

  235. <div class="ttc" id="astructgrpc__byte__buffer_html_a3bf95e73510f5a401cd97c26144c1628"><div class="ttname"><a href="structgrpc__byte__buffer.html#a3bf95e73510f5a401cd97c26144c1628">grpc_byte_buffer::data</a></div><div class="ttdeci">union grpc_byte_buffer::grpc_byte_buffer_data data</div></div>
    236. 

  236. <div class="ttc" id="aclassgrpc_1_1_core_codegen_interface_html_a937d192d91be97e09b9eafd51fb20cf6"><div class="ttname"><a href="classgrpc_1_1_core_codegen_interface.html#a937d192d91be97e09b9eafd51fb20cf6">grpc::CoreCodegenInterface::grpc_slice_malloc</a></div><div class="ttdeci">virtual grpc_slice grpc_slice_malloc(size_t length)=0</div></div>
    237. 

  237. <div class="ttc" id="agrpcpp_2impl_2codegen_2config__protobuf_8h_html"><div class="ttname"><a href="grpcpp_2impl_2codegen_2config__protobuf_8h.html">config_protobuf.h</a></div></div>
    238. 

  238. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_af93269371a674dd4feac4ed90a3171f5"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#af93269371a674dd4feac4ed90a3171f5">grpc::ProtoBufferWriter::ByteCount</a></div><div class="ttdeci">int64_t ByteCount() const override</div><div class="ttdoc">Returns the total number of bytes written since this object was created.</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:141</div></div>
    239. 

  239. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_af812e0ef5b16adce1c70b764f46b71c1"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#af812e0ef5b16adce1c70b764f46b71c1">grpc::ProtoBufferWriter::~ProtoBufferWriter</a></div><div class="ttdeci">~ProtoBufferWriter() override</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:73</div></div>
    240. 

  240. <div class="ttc" id="aclassgrpc_1_1_core_codegen_interface_html_ae3bf7bcb987209890cb897c3ca2e4050"><div class="ttname"><a href="classgrpc_1_1_core_codegen_interface.html#ae3bf7bcb987209890cb897c3ca2e4050">grpc::CoreCodegenInterface::grpc_slice_buffer_pop</a></div><div class="ttdeci">virtual void grpc_slice_buffer_pop(grpc_slice_buffer *sb)=0</div></div>
    241. 

  241. <div class="ttc" id="aclassgrpc_1_1_core_codegen_interface_html_a5586cf5238402be3fba724b28cf1da9c"><div class="ttname"><a href="classgrpc_1_1_core_codegen_interface.html#a5586cf5238402be3fba724b28cf1da9c">grpc::CoreCodegenInterface::grpc_slice_unref</a></div><div class="ttdeci">virtual void grpc_slice_unref(grpc_slice slice)=0</div></div>
    242. 

  242. <div class="ttc" id="agrpc_2impl_2codegen_2slice_8h_html_a8a15783c251cdeb18c3f8b0ad41d0352"><div class="ttname"><a href="grpc_2impl_2codegen_2slice_8h.html#a8a15783c251cdeb18c3f8b0ad41d0352">GRPC_SLICE_START_PTR</a></div><div class="ttdeci">#define GRPC_SLICE_START_PTR(slice)</div><div class="ttdef"><b>Definition:</b> slice.h:96</div></div>
    243. 

  243. <div class="ttc" id="astructgrpc__byte__buffer_1_1grpc__byte__buffer__data_1_1grpc__compressed__buffer_html_a89f407381d073054e2227572dd920f37"><div class="ttname"><a href="structgrpc__byte__buffer_1_1grpc__byte__buffer__data_1_1grpc__compressed__buffer.html#a89f407381d073054e2227572dd920f37">grpc_byte_buffer::grpc_byte_buffer_data::grpc_compressed_buffer::slice_buffer</a></div><div class="ttdeci">grpc_slice_buffer slice_buffer</div><div class="ttdef"><b>Definition:</b> grpc_types.h:49</div></div>
    244. 

  244. <div class="ttc" id="agrpc_2impl_2codegen_2slice_8h_html_a6791fa7be0a1a9144e005cfea7baea84"><div class="ttname"><a href="grpc_2impl_2codegen_2slice_8h.html#a6791fa7be0a1a9144e005cfea7baea84">GRPC_SLICE_SET_LENGTH</a></div><div class="ttdeci">#define GRPC_SLICE_SET_LENGTH(slice, newlen)</div><div class="ttdef"><b>Definition:</b> slice.h:102</div></div>
    245. 

  245. <div class="ttc" id="aclassgrpc_1_1_byte_buffer_html_aea6bcd0d3c70fc14158df68c59dc82d4"><div class="ttname"><a href="classgrpc_1_1_byte_buffer.html#aea6bcd0d3c70fc14158df68c59dc82d4">grpc::ByteBuffer::Valid</a></div><div class="ttdeci">bool Valid() const</div><div class="ttdoc">Is this ByteBuffer valid?</div><div class="ttdef"><b>Definition:</b> byte_buffer.h:157</div></div>
    246. 

  246. <div class="ttc" id="anamespacegrpc_html_abbcecc18dae64c65df0b6d9aa8bf67a8"><div class="ttname"><a href="namespacegrpc.html#abbcecc18dae64c65df0b6d9aa8bf67a8">grpc::g_core_codegen_interface</a></div><div class="ttdeci">CoreCodegenInterface * g_core_codegen_interface</div><div class="ttdef"><b>Definition:</b> completion_queue.h:96</div></div>
    247. 

  247. <div class="ttc" id="agrpcpp_2impl_2codegen_2core__codegen__interface_8h_html_a39c1421e7081b57c503487659e2653a5"><div class="ttname"><a href="grpcpp_2impl_2codegen_2core__codegen__interface_8h.html#a39c1421e7081b57c503487659e2653a5">GPR_CODEGEN_ASSERT</a></div><div class="ttdeci">#define GPR_CODEGEN_ASSERT(x)</div><div class="ttdoc">Codegen specific version of GPR_ASSERT.</div><div class="ttdef"><b>Definition:</b> core_codegen_interface.h:146</div></div>
    248. 

  248. <div class="ttc" id="agrpc_2impl_2codegen_2slice_8h_html_ae65fc74cb3afbcd3299a1c93f90bae20"><div class="ttname"><a href="grpc_2impl_2codegen_2slice_8h.html#ae65fc74cb3afbcd3299a1c93f90bae20">GRPC_SLICE_INLINED_SIZE</a></div><div class="ttdeci">#define GRPC_SLICE_INLINED_SIZE</div><div class="ttdef"><b>Definition:</b> slice.h:47</div></div>
    249. 

  249. <div class="ttc" id="astructgrpc__slice__buffer_html"><div class="ttname"><a href="structgrpc__slice__buffer.html">grpc_slice_buffer</a></div><div class="ttdoc">Represents an expandable array of slices, to be interpreted as a single item.</div><div class="ttdef"><b>Definition:</b> slice.h:78</div></div>
    250. 

  250. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_afebe85844c62f4aa47cc4e6e19af8400"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#afebe85844c62f4aa47cc4e6e19af8400">grpc::ProtoBufferWriter::BackUp</a></div><div class="ttdeci">void BackUp(int count) override</div><div class="ttdoc">Backup by count bytes because Next returned more bytes than needed (only used in the last buffer).</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:118</div></div>
    251. 

  251. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_a656f1f4835a8f4e2944cb6ce92454c8b"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#a656f1f4835a8f4e2944cb6ce92454c8b">grpc::ProtoBufferWriter::set_byte_count</a></div><div class="ttdeci">void set_byte_count(int64_t byte_count)</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:149</div></div>
    252. 

  252. <div class="ttc" id="aclassgrpc_1_1_proto_buffer_writer_html_a7bb6d66e5a6bcf0eee76cb156ab598d4"><div class="ttname"><a href="classgrpc_1_1_proto_buffer_writer.html#a7bb6d66e5a6bcf0eee76cb156ab598d4">grpc::ProtoBufferWriter::ProtoBufferWriterPeer</a></div><div class="ttdeci">friend class internal::ProtoBufferWriterPeer</div><div class="ttdef"><b>Definition:</b> proto_buffer_writer.h:153</div></div>
    253. 

  253. <div class="ttc" id="agrpc_2impl_2codegen_2slice_8h_html"><div class="ttname"><a href="grpc_2impl_2codegen_2slice_8h.html">slice.h</a></div></div>
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