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<a href="metadata_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> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright 2015, Google Inc.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * met:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * in the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * distribution.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * * Neither the name of Google Inc. nor the names of its</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * this software without specific prior written permission.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#ifndef GRPC_INTERNAL_CORE_TRANSPORT_METADATA_H</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_INTERNAL_CORE_TRANSPORT_METADATA_H</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="slice_8h.html">grpc/support/slice.h</a>></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <<a class="code" href="useful_8h.html">grpc/support/useful.h</a>></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">/* This file provides a mechanism for tracking metadata through the grpc stack.</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> It's not intended for consumption outside of the library.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> Metadata is tracked in the context of a grpc_mdctx. For the time being there</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> is one of these per-channel, avoiding cross channel interference with memory</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> use and lock contention.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> The context tracks unique strings (grpc_mdstr) and pairs of strings</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> (grpc_mdelem). Any of these objects can be checked for equality by comparing</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> their pointers. These objects are reference counted.</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> grpc_mdelem can additionally store a (non-NULL) user data pointer. This</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> pointer is intended to be used to cache semantic meaning of a metadata</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> element. For example, an OAuth token may cache the credentials it represents</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> and the time at which it expires in the mdelem user data.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"></span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> Combining this metadata cache and the hpack compression table allows us to</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> simply lookup complete preparsed objects quickly, incurring a few atomic</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> ops per metadata element on the fast path.</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"></span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> grpc_mdelem instances MAY live longer than their refcount implies, and are</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> garbage collected periodically, meaning cached data can easily outlive a</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> single request. */</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">/* Forward declarations */</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="metadata_8h.html#a3d670d2ea84f975e9ff4758ceaf0742d"> 65</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> <a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a>;</div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="metadata_8h.html#a37a4eca36e6506776f4c60c598dd01f5"> 66</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a>;</div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="metadata_8h.html#a90dde22c13b91f78568735a7f666992e"> 67</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a>;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">/* if changing this, make identical changes in internal_string in metadata.c */</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="structgrpc__mdstr.html"> 70</a></span> <span class="keyword">struct </span><a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> {</div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="structgrpc__mdstr.html#a748902fde1a15c453757c2e45509941e"> 71</a></span>  <span class="keyword">const</span> <a class="code" href="structgpr__slice.html">gpr_slice</a> <a class="code" href="structgrpc__mdstr.html#a748902fde1a15c453757c2e45509941e">slice</a>;</div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="structgrpc__mdstr.html#a293d438ac394265fb036e8dba0a3bc9d"> 72</a></span>  <span class="keyword">const</span> <a class="code" href="port__platform_8h.html#aa6abd4df815a5498d1a04b5e691a74a9">gpr_uint32</a> <a class="code" href="structgrpc__mdstr.html#a293d438ac394265fb036e8dba0a3bc9d">hash</a>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">/* there is a private part to this in metadata.c */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> };</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">/* if changing this, make identical changes in internal_metadata in</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> metadata.c */</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="structgrpc__mdelem.html"> 78</a></span> <span class="keyword">struct </span><a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> {</div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="structgrpc__mdelem.html#a8260c065e7658a1d2438c656bd8aae94"> 79</a></span>  <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<span class="keyword">const</span> <a class="code" href="structgrpc__mdelem.html#a8260c065e7658a1d2438c656bd8aae94">key</a>;</div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="structgrpc__mdelem.html#ae98f0541c25f94c27c8a0e63741267e1"> 80</a></span>  <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<span class="keyword">const</span> <a class="code" href="structgrpc__mdelem.html#ae98f0541c25f94c27c8a0e63741267e1">value</a>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">/* there is a private part to this in metadata.c */</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> };</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">/* Create/orphan a metadata context */</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *<a class="code" href="metadata_8h.html#a207b09a54f3c57a90b5b44868fbf5649">grpc_mdctx_create</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *<a class="code" href="metadata_8h.html#a29700f3749eea2c96f7bae1d57f8f7e3">grpc_mdctx_create_with_seed</a>(<a class="code" href="port__platform_8h.html#aa6abd4df815a5498d1a04b5e691a74a9">gpr_uint32</a> seed);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a0eee1214d287f4f14fa1363fdacff5da">grpc_mdctx_ref</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *mdctx);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a8ca25748d59d50f8641692bf3ae357d3">grpc_mdctx_unref</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *mdctx);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">/* Test only accessors to internal state - only for testing this code - do not</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> rely on it outside of metadata_test.c */</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keywordtype">size_t</span> <a class="code" href="metadata_8h.html#ab56ce41a4a8c2d30fca3e32d4d7b5e36">grpc_mdctx_get_mdtab_capacity_test_only</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *mdctx);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="keywordtype">size_t</span> <a class="code" href="metadata_8h.html#ac3c26191d224ff5ac9f54713cfc90f92">grpc_mdctx_get_mdtab_count_test_only</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *mdctx);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keywordtype">size_t</span> <a class="code" href="metadata_8h.html#ae467d8aaa91efb73610faca99c18ca17">grpc_mdctx_get_mdtab_free_test_only</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *mdctx);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">/* Constructors for grpc_mdstr instances; take a variety of data types that</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> clients may have handy */</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="metadata_8h.html#af961acf0149066abf14c01f56a3e2b55">grpc_mdstr_from_string</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *str, <span class="keywordtype">int</span> perform_key_canonicalization);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">/* Unrefs the slice. */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="metadata_8h.html#a4eccbbb62d87a131d2eb3367fd2c4c43">grpc_mdstr_from_slice</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <a class="code" href="structgpr__slice.html">gpr_slice</a> slice);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="metadata_8h.html#ac510347648778d23eaf6c8d9a4b664db">grpc_mdstr_from_buffer</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <span class="keyword">const</span> <a class="code" href="port__platform_8h.html#aeeb41e29e7c7a916a4e0fb6cfb9f92e0">gpr_uint8</a> *str,</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">size_t</span> length);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment">/* Returns a borrowed slice from the mdstr with its contents base64 encoded</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> and huffman compressed */</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <a class="code" href="structgpr__slice.html">gpr_slice</a> <a class="code" href="metadata_8h.html#a314273fea07852ac80ea184100398c11">grpc_mdstr_as_base64_encoded_and_huffman_compressed</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *str);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment">/* Constructors for grpc_mdelem instances; take a variety of data types that</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> clients may have handy */</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *<a class="code" href="metadata_8h.html#a969845603738428cf18a9a090896e152">grpc_mdelem_from_metadata_strings</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="hpack__table_8c.html#acd3d88da3c0e0313c3645ff34f62f542">key</a>,</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *<a class="code" href="metadata_8h.html#a6535f623fc2bd818158d96f6a37f73c8">grpc_mdelem_from_strings</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="hpack__table_8c.html#acd3d88da3c0e0313c3645ff34f62f542">key</a>,</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">/* Unrefs the slices. */</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *<a class="code" href="metadata_8h.html#a5b5ad2d68dd8c76345170f5f732b8fa2">grpc_mdelem_from_slices</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <a class="code" href="structgpr__slice.html">gpr_slice</a> <a class="code" href="hpack__table_8c.html#acd3d88da3c0e0313c3645ff34f62f542">key</a>,</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="structgpr__slice.html">gpr_slice</a> <a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *<a class="code" href="metadata_8h.html#a748c6028cdc4cd0fd8d98c3a7f79ed13">grpc_mdelem_from_string_and_buffer</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx,</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="hpack__table_8c.html#acd3d88da3c0e0313c3645ff34f62f542">key</a>,</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">const</span> <a class="code" href="port__platform_8h.html#aeeb41e29e7c7a916a4e0fb6cfb9f92e0">gpr_uint8</a> *<a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>,</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">size_t</span> value_length,</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordtype">int</span> canonicalize_key);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">/* Mutator and accessor for grpc_mdelem user data. The destructor function</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> is used as a type tag and is checked during user_data fetch. */</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keywordtype">void</span> *<a class="code" href="metadata_8h.html#a1f7c3e28f1f851a5b50d274f3ad3ecc9">grpc_mdelem_get_user_data</a>(<a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *md,</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">void</span> (*if_destroy_func)(<span class="keywordtype">void</span> *));</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a6d0f62841408f1a89773aa4ef54dcf0e">grpc_mdelem_set_user_data</a>(<a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *md, <span class="keywordtype">void</span> (*destroy_func)(<span class="keywordtype">void</span> *),</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">void</span> *user_data);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/* Reference counting */</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#ifdef GRPC_METADATA_REFCOUNT_DEBUG</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDSTR_REF(s) grpc_mdstr_ref((s), __FILE__, __LINE__)</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDSTR_UNREF(s) grpc_mdstr_unref((s), __FILE__, __LINE__)</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s), __FILE__, __LINE__)</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s), __FILE__, __LINE__)</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"></span><a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="metadata_8h.html#abb0b4e65a5d630dfe5fe975cd7b578cf">grpc_mdstr_ref</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s, <span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> line);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a6ba2e968699daaddaad9b48b78779465">grpc_mdstr_unref</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s, <span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> line);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *<a class="code" href="metadata_8h.html#ae73ccb189245977bbddfa464bd3c6615">grpc_mdelem_ref</a>(<a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *md, <span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> line);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#aaf81c9b79ca751ffb4de33ea510d70cc">grpc_mdelem_unref</a>(<a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *md, <span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> line);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="metadata_8h.html#ab07dbb900f15b2fe28ea24451c5cfa3d"> 141</a></span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDSTR_REF(s) grpc_mdstr_ref((s))</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="metadata_8h.html#ab6dceed9dacb076aa33c15323f6e823c"> 142</a></span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDSTR_UNREF(s) grpc_mdstr_unref((s))</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="metadata_8h.html#af5a6d4b7c327b66f0902c683ab007618"> 143</a></span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s))</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="metadata_8h.html#ab01db7c946e0962da8888f19cb870afb"> 144</a></span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s))</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor"></span><a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *<a class="code" href="metadata_8h.html#abb0b4e65a5d630dfe5fe975cd7b578cf">grpc_mdstr_ref</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a6ba2e968699daaddaad9b48b78779465">grpc_mdstr_unref</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *<a class="code" href="metadata_8h.html#ae73ccb189245977bbddfa464bd3c6615">grpc_mdelem_ref</a>(<a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *md);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#aaf81c9b79ca751ffb4de33ea510d70cc">grpc_mdelem_unref</a>(<a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *md);</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> <span class="preprocessor"></span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment">/* Recover a char* from a grpc_mdstr. The returned string is null terminated.</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> Does not promise that the returned string has no embedded nulls however. */</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="metadata_8h.html#aacbae6a08b63835ec31fcddb556aa895">grpc_mdstr_as_c_string</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="keywordtype">int</span> <a class="code" href="metadata_8h.html#a427ad60503ae8ce87bcfa0aa09fe99a5">grpc_mdstr_is_legal_header</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="keywordtype">int</span> <a class="code" href="metadata_8h.html#ad34887fb9c6733916ac87b8fde793e74">grpc_mdstr_is_bin_suffixed</a>(<a class="code" href="structgrpc__mdstr.html">grpc_mdstr</a> *s);</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment">/* Batch mode metadata functions.</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> These API's have equivalents above, but allow taking the mdctx just once,</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> performing a bunch of work, and then leaving the mdctx. */</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment">/* Lock the metadata context: it's only safe to call _locked_ functions against</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> this context from the calling thread until grpc_mdctx_unlock is called */</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a390eb255a6d72a8ea84ac8ad3cbeb331">grpc_mdctx_lock</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx);</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="preprocessor">#ifdef GRPC_METADATA_REFCOUNT_DEBUG</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDCTX_LOCKED_MDELEM_UNREF(ctx, elem) \</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor"> grpc_mdctx_locked_mdelem_unref((ctx), (elem), __FILE__, __LINE__)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor"></span><span class="comment">/* Unref a metadata element */</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a7b190b43b10959286e61719a9f9f0f01">grpc_mdctx_locked_mdelem_unref</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *elem,</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> line);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="metadata_8h.html#af96c346c98e982e5c0086467dd11e714"> 172</a></span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_MDCTX_LOCKED_MDELEM_UNREF(ctx, elem) \</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor"> grpc_mdctx_locked_mdelem_unref((ctx), (elem))</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"></span><span class="comment">/* Unref a metadata element */</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a7b190b43b10959286e61719a9f9f0f01">grpc_mdctx_locked_mdelem_unref</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx, <a class="code" href="structgrpc__mdelem.html">grpc_mdelem</a> *elem);</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor"></span><span class="comment">/* Unlock the metadata context */</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="keywordtype">void</span> <a class="code" href="metadata_8h.html#a033690c1ac25d72fdc5e56e9f5d9e97b">grpc_mdctx_unlock</a>(<a class="code" href="structgrpc__mdctx.html">grpc_mdctx</a> *ctx);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
<div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="metadata_8h.html#a385838d339c97b956529499c1da41e1f"> 180</a></span> <span class="preprocessor">#define GRPC_MDSTR_KV_HASH(k_hash, v_hash) (GPR_ROTL((k_hash), 2) ^ (v_hash))</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="preprocessor">#endif </span><span class="comment">/* GRPC_INTERNAL_CORE_TRANSPORT_METADATA_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="hpack__table_8c_html_a8556878012feffc9e0beb86cd78f424d"><div class="ttname"><a href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a></div><div class="ttdeci">const char * value</div><div class="ttdef"><b>Definition:</b> hpack_table.c:44</div></div>
<div class="ttc" id="metadata_8h_html_abb0b4e65a5d630dfe5fe975cd7b578cf"><div class="ttname"><a href="metadata_8h.html#abb0b4e65a5d630dfe5fe975cd7b578cf">grpc_mdstr_ref</a></div><div class="ttdeci">grpc_mdstr * grpc_mdstr_ref(grpc_mdstr *s)</div><div class="ttdef"><b>Definition:</b> metadata.c:586</div></div>
<div class="ttc" id="port__platform_8h_html_aeeb41e29e7c7a916a4e0fb6cfb9f92e0"><div class="ttname"><a href="port__platform_8h.html#aeeb41e29e7c7a916a4e0fb6cfb9f92e0">gpr_uint8</a></div><div class="ttdeci">uint8_t gpr_uint8</div><div class="ttdef"><b>Definition:</b> port_platform.h:307</div></div>
<div class="ttc" id="metadata_8h_html_ac510347648778d23eaf6c8d9a4b664db"><div class="ttname"><a href="metadata_8h.html#ac510347648778d23eaf6c8d9a4b664db">grpc_mdstr_from_buffer</a></div><div class="ttdeci">grpc_mdstr * grpc_mdstr_from_buffer(grpc_mdctx *ctx, const gpr_uint8 *str, size_t length)</div><div class="ttdef"><b>Definition:</b> metadata.c:353</div></div>
<div class="ttc" id="metadata_8h_html_a748c6028cdc4cd0fd8d98c3a7f79ed13"><div class="ttname"><a href="metadata_8h.html#a748c6028cdc4cd0fd8d98c3a7f79ed13">grpc_mdelem_from_string_and_buffer</a></div><div class="ttdeci">grpc_mdelem * grpc_mdelem_from_string_and_buffer(grpc_mdctx *ctx, const char *key, const gpr_uint8 *value, size_t value_length, int canonicalize_key)</div><div class="ttdef"><b>Definition:</b> metadata.c:534</div></div>
<div class="ttc" id="metadata_8h_html_ae467d8aaa91efb73610faca99c18ca17"><div class="ttname"><a href="metadata_8h.html#ae467d8aaa91efb73610faca99c18ca17">grpc_mdctx_get_mdtab_free_test_only</a></div><div class="ttdeci">size_t grpc_mdctx_get_mdtab_free_test_only(grpc_mdctx *mdctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:611</div></div>
<div class="ttc" id="metadata_8h_html_a033690c1ac25d72fdc5e56e9f5d9e97b"><div class="ttname"><a href="metadata_8h.html#a033690c1ac25d72fdc5e56e9f5d9e97b">grpc_mdctx_unlock</a></div><div class="ttdeci">void grpc_mdctx_unlock(grpc_mdctx *ctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:679</div></div>
<div class="ttc" id="metadata_8h_html_a390eb255a6d72a8ea84ac8ad3cbeb331"><div class="ttname"><a href="metadata_8h.html#a390eb255a6d72a8ea84ac8ad3cbeb331">grpc_mdctx_lock</a></div><div class="ttdeci">void grpc_mdctx_lock(grpc_mdctx *ctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:658</div></div>
<div class="ttc" id="metadata_8h_html_a6ba2e968699daaddaad9b48b78779465"><div class="ttname"><a href="metadata_8h.html#a6ba2e968699daaddaad9b48b78779465">grpc_mdstr_unref</a></div><div class="ttdeci">void grpc_mdstr_unref(grpc_mdstr *s)</div><div class="ttdef"><b>Definition:</b> metadata.c:595</div></div>
<div class="ttc" id="structgrpc__mdelem_html_a8260c065e7658a1d2438c656bd8aae94"><div class="ttname"><a href="structgrpc__mdelem.html#a8260c065e7658a1d2438c656bd8aae94">grpc_mdelem::key</a></div><div class="ttdeci">grpc_mdstr *const key</div><div class="ttdef"><b>Definition:</b> metadata.h:79</div></div>
<div class="ttc" id="structgrpc__mdstr_html_a293d438ac394265fb036e8dba0a3bc9d"><div class="ttname"><a href="structgrpc__mdstr.html#a293d438ac394265fb036e8dba0a3bc9d">grpc_mdstr::hash</a></div><div class="ttdeci">const gpr_uint32 hash</div><div class="ttdef"><b>Definition:</b> metadata.h:72</div></div>
<div class="ttc" id="metadata_8h_html_a427ad60503ae8ce87bcfa0aa09fe99a5"><div class="ttname"><a href="metadata_8h.html#a427ad60503ae8ce87bcfa0aa09fe99a5">grpc_mdstr_is_legal_header</a></div><div class="ttdeci">int grpc_mdstr_is_legal_header(grpc_mdstr *s)</div><div class="ttdef"><b>Definition:</b> metadata.c:681</div></div>
<div class="ttc" id="structgrpc__mdstr_html"><div class="ttname"><a href="structgrpc__mdstr.html">grpc_mdstr</a></div><div class="ttdef"><b>Definition:</b> metadata.h:70</div></div>
<div class="ttc" id="port__platform_8h_html_aa6abd4df815a5498d1a04b5e691a74a9"><div class="ttname"><a href="port__platform_8h.html#aa6abd4df815a5498d1a04b5e691a74a9">gpr_uint32</a></div><div class="ttdeci">uint32_t gpr_uint32</div><div class="ttdef"><b>Definition:</b> port_platform.h:309</div></div>
<div class="ttc" id="useful_8h_html"><div class="ttname"><a href="useful_8h.html">useful.h</a></div></div>
<div class="ttc" id="metadata_8h_html_a5b5ad2d68dd8c76345170f5f732b8fa2"><div class="ttname"><a href="metadata_8h.html#a5b5ad2d68dd8c76345170f5f732b8fa2">grpc_mdelem_from_slices</a></div><div class="ttdeci">grpc_mdelem * grpc_mdelem_from_slices(grpc_mdctx *ctx, gpr_slice key, gpr_slice value)</div><div class="ttdef"><b>Definition:</b> metadata.c:528</div></div>
<div class="ttc" id="metadata_8h_html_a6535f623fc2bd818158d96f6a37f73c8"><div class="ttname"><a href="metadata_8h.html#a6535f623fc2bd818158d96f6a37f73c8">grpc_mdelem_from_strings</a></div><div class="ttdeci">grpc_mdelem * grpc_mdelem_from_strings(grpc_mdctx *ctx, const char *key, const char *value)</div><div class="ttdef"><b>Definition:</b> metadata.c:521</div></div>
<div class="ttc" id="metadata_8h_html_ab56ce41a4a8c2d30fca3e32d4d7b5e36"><div class="ttname"><a href="metadata_8h.html#ab56ce41a4a8c2d30fca3e32d4d7b5e36">grpc_mdctx_get_mdtab_capacity_test_only</a></div><div class="ttdeci">size_t grpc_mdctx_get_mdtab_capacity_test_only(grpc_mdctx *mdctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:603</div></div>
<div class="ttc" id="metadata_8h_html_a6d0f62841408f1a89773aa4ef54dcf0e"><div class="ttname"><a href="metadata_8h.html#a6d0f62841408f1a89773aa4ef54dcf0e">grpc_mdelem_set_user_data</a></div><div class="ttdeci">void grpc_mdelem_set_user_data(grpc_mdelem *md, void(*destroy_func)(void *), void *user_data)</div><div class="ttdef"><b>Definition:</b> metadata.c:625</div></div>
<div class="ttc" id="metadata_8h_html_a969845603738428cf18a9a090896e152"><div class="ttname"><a href="metadata_8h.html#a969845603738428cf18a9a090896e152">grpc_mdelem_from_metadata_strings</a></div><div class="ttdeci">grpc_mdelem * grpc_mdelem_from_metadata_strings(grpc_mdctx *ctx, grpc_mdstr *key, grpc_mdstr *value)</div><div class="ttdef"><b>Definition:</b> metadata.c:469</div></div>
<div class="ttc" id="metadata_8h_html_a29700f3749eea2c96f7bae1d57f8f7e3"><div class="ttname"><a href="metadata_8h.html#a29700f3749eea2c96f7bae1d57f8f7e3">grpc_mdctx_create_with_seed</a></div><div class="ttdeci">grpc_mdctx * grpc_mdctx_create_with_seed(gpr_uint32 seed)</div><div class="ttdef"><b>Definition:</b> metadata.c:164</div></div>
<div class="ttc" id="metadata_8h_html_ae73ccb189245977bbddfa464bd3c6615"><div class="ttname"><a href="metadata_8h.html#ae73ccb189245977bbddfa464bd3c6615">grpc_mdelem_ref</a></div><div class="ttdeci">grpc_mdelem * grpc_mdelem_ref(grpc_mdelem *md)</div><div class="ttdef"><b>Definition:</b> metadata.c:544</div></div>
<div class="ttc" id="metadata_8h_html_a8ca25748d59d50f8641692bf3ae357d3"><div class="ttname"><a href="metadata_8h.html#a8ca25748d59d50f8641692bf3ae357d3">grpc_mdctx_unref</a></div><div class="ttdeci">void grpc_mdctx_unref(grpc_mdctx *mdctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:232</div></div>
<div class="ttc" id="structgrpc__mdctx_html"><div class="ttname"><a href="structgrpc__mdctx.html">grpc_mdctx</a></div><div class="ttdef"><b>Definition:</b> metadata.c:98</div></div>
<div class="ttc" id="metadata_8h_html_a4eccbbb62d87a131d2eb3367fd2c4c43"><div class="ttname"><a href="metadata_8h.html#a4eccbbb62d87a131d2eb3367fd2c4c43">grpc_mdstr_from_slice</a></div><div class="ttdeci">grpc_mdstr * grpc_mdstr_from_slice(grpc_mdctx *ctx, gpr_slice slice)</div><div class="ttdef"><b>Definition:</b> metadata.c:346</div></div>
<div class="ttc" id="structgrpc__mdelem_html"><div class="ttname"><a href="structgrpc__mdelem.html">grpc_mdelem</a></div><div class="ttdef"><b>Definition:</b> metadata.h:78</div></div>
<div class="ttc" id="metadata_8h_html_a0eee1214d287f4f14fa1363fdacff5da"><div class="ttname"><a href="metadata_8h.html#a0eee1214d287f4f14fa1363fdacff5da">grpc_mdctx_ref</a></div><div class="ttdeci">void grpc_mdctx_ref(grpc_mdctx *mdctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:225</div></div>
<div class="ttc" id="structgrpc__mdstr_html_a748902fde1a15c453757c2e45509941e"><div class="ttname"><a href="structgrpc__mdstr.html#a748902fde1a15c453757c2e45509941e">grpc_mdstr::slice</a></div><div class="ttdeci">const gpr_slice slice</div><div class="ttdef"><b>Definition:</b> metadata.h:71</div></div>
<div class="ttc" id="metadata_8h_html_a7b190b43b10959286e61719a9f9f0f01"><div class="ttname"><a href="metadata_8h.html#a7b190b43b10959286e61719a9f9f0f01">grpc_mdctx_locked_mdelem_unref</a></div><div class="ttdeci">void grpc_mdctx_locked_mdelem_unref(grpc_mdctx *ctx, grpc_mdelem *elem)</div><div class="ttdef"><b>Definition:</b> metadata.c:660</div></div>
<div class="ttc" id="structgrpc__mdelem_html_ae98f0541c25f94c27c8a0e63741267e1"><div class="ttname"><a href="structgrpc__mdelem.html#ae98f0541c25f94c27c8a0e63741267e1">grpc_mdelem::value</a></div><div class="ttdeci">grpc_mdstr *const value</div><div class="ttdef"><b>Definition:</b> metadata.h:80</div></div>
<div class="ttc" id="slice_8h_html"><div class="ttname"><a href="slice_8h.html">slice.h</a></div></div>
<div class="ttc" id="metadata_8h_html_ad34887fb9c6733916ac87b8fde793e74"><div class="ttname"><a href="metadata_8h.html#ad34887fb9c6733916ac87b8fde793e74">grpc_mdstr_is_bin_suffixed</a></div><div class="ttdeci">int grpc_mdstr_is_bin_suffixed(grpc_mdstr *s)</div><div class="ttdef"><b>Definition:</b> metadata.c:691</div></div>
<div class="ttc" id="metadata_8h_html_aacbae6a08b63835ec31fcddb556aa895"><div class="ttname"><a href="metadata_8h.html#aacbae6a08b63835ec31fcddb556aa895">grpc_mdstr_as_c_string</a></div><div class="ttdeci">const char * grpc_mdstr_as_c_string(grpc_mdstr *s)</div><div class="ttdef"><b>Definition:</b> metadata.c:582</div></div>
<div class="ttc" id="metadata_8h_html_ac3c26191d224ff5ac9f54713cfc90f92"><div class="ttname"><a href="metadata_8h.html#ac3c26191d224ff5ac9f54713cfc90f92">grpc_mdctx_get_mdtab_count_test_only</a></div><div class="ttdeci">size_t grpc_mdctx_get_mdtab_count_test_only(grpc_mdctx *mdctx)</div><div class="ttdef"><b>Definition:</b> metadata.c:607</div></div>
<div class="ttc" id="metadata_8h_html_af961acf0149066abf14c01f56a3e2b55"><div class="ttname"><a href="metadata_8h.html#af961acf0149066abf14c01f56a3e2b55">grpc_mdstr_from_string</a></div><div class="ttdeci">grpc_mdstr * grpc_mdstr_from_string(grpc_mdctx *ctx, const char *str, int perform_key_canonicalization)</div><div class="ttdef"><b>Definition:</b> metadata.c:312</div></div>
<div class="ttc" id="metadata_8h_html_a207b09a54f3c57a90b5b44868fbf5649"><div class="ttname"><a href="metadata_8h.html#a207b09a54f3c57a90b5b44868fbf5649">grpc_mdctx_create</a></div><div class="ttdeci">grpc_mdctx * grpc_mdctx_create(void)</div><div class="ttdef"><b>Definition:</b> metadata.c:183</div></div>
<div class="ttc" id="metadata_8h_html_aaf81c9b79ca751ffb4de33ea510d70cc"><div class="ttname"><a href="metadata_8h.html#aaf81c9b79ca751ffb4de33ea510d70cc">grpc_mdelem_unref</a></div><div class="ttdeci">void grpc_mdelem_unref(grpc_mdelem *md)</div><div class="ttdef"><b>Definition:</b> metadata.c:563</div></div>
<div class="ttc" id="metadata_8h_html_a1f7c3e28f1f851a5b50d274f3ad3ecc9"><div class="ttname"><a href="metadata_8h.html#a1f7c3e28f1f851a5b50d274f3ad3ecc9">grpc_mdelem_get_user_data</a></div><div class="ttdeci">void * grpc_mdelem_get_user_data(grpc_mdelem *md, void(*if_destroy_func)(void *))</div><div class="ttdef"><b>Definition:</b> metadata.c:615</div></div>
<div class="ttc" id="hpack__table_8c_html_acd3d88da3c0e0313c3645ff34f62f542"><div class="ttname"><a href="hpack__table_8c.html#acd3d88da3c0e0313c3645ff34f62f542">key</a></div><div class="ttdeci">const char * key</div><div class="ttdef"><b>Definition:</b> hpack_table.c:43</div></div>
<div class="ttc" id="structgpr__slice_html"><div class="ttname"><a href="structgpr__slice.html">gpr_slice</a></div><div class="ttdef"><b>Definition:</b> slice.h:79</div></div>
<div class="ttc" id="metadata_8h_html_a314273fea07852ac80ea184100398c11"><div class="ttname"><a href="metadata_8h.html#a314273fea07852ac80ea184100398c11">grpc_mdstr_as_base64_encoded_and_huffman_compressed</a></div><div class="ttdeci">gpr_slice grpc_mdstr_as_base64_encoded_and_huffman_compressed(grpc_mdstr *str)</div><div class="ttdef"><b>Definition:</b> metadata.c:643</div></div>
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