<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src\memory\features.rs`."><title>features.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-ca0dd0c4.css"><script id="default-settings"
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<a href=#2 id=2 data-nosnippet>2</a>///
<a href=#3 id=3 data-nosnippet>3</a>/// This module provides specialized memory operations including
<a href=#4 id=4 data-nosnippet>4</a>/// compression, encryption, parallel processing, and memory-mapped I/O.
<a href=#5 id=5 data-nosnippet>5</a></span><span class="comment">// Standard library imports
<a href=#6 id=6 data-nosnippet>6</a></span><span class="kw">use </span>std::{
<a href=#7 id=7 data-nosnippet>7</a> io::{Read, Write},
<a href=#8 id=8 data-nosnippet>8</a> slice::from_raw_parts,
<a href=#9 id=9 data-nosnippet>9</a> sync::Arc,
<a href=#10 id=10 data-nosnippet>10</a>};
<a href=#11 id=11 data-nosnippet>11</a>
<a href=#12 id=12 data-nosnippet>12</a><span class="comment">// External crate imports
<a href=#13 id=13 data-nosnippet>13</a></span><span class="kw">use </span>arc_swap::ArcSwap;
<a href=#14 id=14 data-nosnippet>14</a><span class="kw">use </span>brotli::{CompressorWriter, Decompressor};
<a href=#15 id=15 data-nosnippet>15</a><span class="kw">use </span>parking_lot::Mutex;
<a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>tempfile::NamedTempFile;
<a href=#17 id=17 data-nosnippet>17</a>
<a href=#18 id=18 data-nosnippet>18</a><span class="comment">// Local imports
<a href=#19 id=19 data-nosnippet>19</a></span><span class="kw">use super</span>::{MemoryPool, MemoryPoolConfig, MemoryStats};
<a href=#20 id=20 data-nosnippet>20</a>
<a href=#21 id=21 data-nosnippet>21</a><span class="doccomment">/// Compressed memory pool for space-efficient storage
<a href=#22 id=22 data-nosnippet>22</a></span><span class="attr">#[derive(Debug)]
<a href=#23 id=23 data-nosnippet>23</a></span><span class="kw">pub struct </span>CompressedMemoryPool {
<a href=#24 id=24 data-nosnippet>24</a> pool: MemoryPool,
<a href=#25 id=25 data-nosnippet>25</a> compression_level: u32,
<a href=#26 id=26 data-nosnippet>26</a>}
<a href=#27 id=27 data-nosnippet>27</a>
<a href=#28 id=28 data-nosnippet>28</a><span class="kw">impl </span>CompressedMemoryPool {
<a href=#29 id=29 data-nosnippet>29</a> <span class="doccomment">/// Create a new compressed memory pool
<a href=#30 id=30 data-nosnippet>30</a> </span><span class="attr">#[must_use]
<a href=#31 id=31 data-nosnippet>31</a> </span><span class="kw">pub fn </span>new(config: MemoryPoolConfig, compression_level: u32) -> <span class="self">Self </span>{
<a href=#32 id=32 data-nosnippet>32</a> <span class="self">Self </span>{
<a href=#33 id=33 data-nosnippet>33</a> pool: MemoryPool::new(config),
<a href=#34 id=34 data-nosnippet>34</a> compression_level,
<a href=#35 id=35 data-nosnippet>35</a> }
<a href=#36 id=36 data-nosnippet>36</a> }
<a href=#37 id=37 data-nosnippet>37</a>
<a href=#38 id=38 data-nosnippet>38</a> <span class="doccomment">/// Allocate and compress data
<a href=#39 id=39 data-nosnippet>39</a> ///
<a href=#40 id=40 data-nosnippet>40</a> /// # Errors
<a href=#41 id=41 data-nosnippet>41</a> ///
<a href=#42 id=42 data-nosnippet>42</a> /// Returns an `std::io::Error` if compression or allocation fails.
<a href=#43 id=43 data-nosnippet>43</a> </span><span class="kw">pub fn </span>allocate_compressed(
<a href=#44 id=44 data-nosnippet>44</a> <span class="kw-2">&</span><span class="self">self</span>,
<a href=#45 id=45 data-nosnippet>45</a> data: <span class="kw-2">&</span>[u8],
<a href=#46 id=46 data-nosnippet>46</a> ) -> <span class="prelude-ty">Result</span><CompressedAllocation<<span class="lifetime">'_</span>>, std::io::Error> {
<a href=#47 id=47 data-nosnippet>47</a> <span class="kw">let </span>compressed = compress_data(data, <span class="self">self</span>.compression_level)<span class="question-mark">?</span>;
<a href=#48 id=48 data-nosnippet>48</a> <span class="kw">let </span>ptr = <span class="self">self</span>.pool.allocate(compressed.len())<span class="question-mark">?</span>;
<a href=#49 id=49 data-nosnippet>49</a> <span class="kw">unsafe </span>{
<a href=#50 id=50 data-nosnippet>50</a> ptr.copy_from(compressed.as_ptr(), compressed.len());
<a href=#51 id=51 data-nosnippet>51</a> }
<a href=#52 id=52 data-nosnippet>52</a>
<a href=#53 id=53 data-nosnippet>53</a> <span class="prelude-val">Ok</span>(CompressedAllocation {
<a href=#54 id=54 data-nosnippet>54</a> ptr,
<a href=#55 id=55 data-nosnippet>55</a> compressed_size: compressed.len(),
<a href=#56 id=56 data-nosnippet>56</a> original_size: data.len(),
<a href=#57 id=57 data-nosnippet>57</a> pool: <span class="kw-2">&</span><span class="self">self</span>.pool,
<a href=#58 id=58 data-nosnippet>58</a> })
<a href=#59 id=59 data-nosnippet>59</a> }
<a href=#60 id=60 data-nosnippet>60</a>
<a href=#61 id=61 data-nosnippet>61</a> <span class="doccomment">/// Get pool statistics
<a href=#62 id=62 data-nosnippet>62</a> </span><span class="attr">#[must_use]
<a href=#63 id=63 data-nosnippet>63</a> </span><span class="kw">pub fn </span>stats(<span class="kw-2">&</span><span class="self">self</span>) -> Arc<MemoryStats> {
<a href=#64 id=64 data-nosnippet>64</a> <span class="self">self</span>.pool.stats()
<a href=#65 id=65 data-nosnippet>65</a> }
<a href=#66 id=66 data-nosnippet>66</a>
<a href=#67 id=67 data-nosnippet>67</a> <span class="doccomment">/// Get compression level
<a href=#68 id=68 data-nosnippet>68</a> </span><span class="attr">#[must_use]
<a href=#69 id=69 data-nosnippet>69</a> </span><span class="kw">pub fn </span>compression_level(<span class="kw-2">&</span><span class="self">self</span>) -> u32 {
<a href=#70 id=70 data-nosnippet>70</a> <span class="self">self</span>.compression_level
<a href=#71 id=71 data-nosnippet>71</a> }
<a href=#72 id=72 data-nosnippet>72</a>}
<a href=#73 id=73 data-nosnippet>73</a>
<a href=#74 id=74 data-nosnippet>74</a><span class="doccomment">/// Guard for compressed memory allocation
<a href=#75 id=75 data-nosnippet>75</a></span><span class="attr">#[derive(Debug)]
<a href=#76 id=76 data-nosnippet>76</a></span><span class="kw">pub struct </span>CompressedAllocation<<span class="lifetime">'a</span>> {
<a href=#77 id=77 data-nosnippet>77</a> ptr: <span class="kw-2">*mut </span>u8,
<a href=#78 id=78 data-nosnippet>78</a> compressed_size: usize,
<a href=#79 id=79 data-nosnippet>79</a> original_size: usize,
<a href=#80 id=80 data-nosnippet>80</a> pool: <span class="kw-2">&</span><span class="lifetime">'a </span>MemoryPool,
<a href=#81 id=81 data-nosnippet>81</a>}
<a href=#82 id=82 data-nosnippet>82</a>
<a href=#83 id=83 data-nosnippet>83</a><span class="kw">impl </span>CompressedAllocation<<span class="lifetime">'_</span>> {
<a href=#84 id=84 data-nosnippet>84</a> <span class="doccomment">/// Decompress and get original data
<a href=#85 id=85 data-nosnippet>85</a> ///
<a href=#86 id=86 data-nosnippet>86</a> /// # Errors
<a href=#87 id=87 data-nosnippet>87</a> ///
<a href=#88 id=88 data-nosnippet>88</a> /// Returns an `std::io::Error` if decompression fails.
<a href=#89 id=89 data-nosnippet>89</a> </span><span class="kw">pub fn </span>decompress(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#90 id=90 data-nosnippet>90</a> <span class="kw">let </span>compressed_data = <span class="kw">unsafe </span>{ from_raw_parts(<span class="self">self</span>.ptr, <span class="self">self</span>.compressed_size) };
<a href=#91 id=91 data-nosnippet>91</a> decompress_data(compressed_data)
<a href=#92 id=92 data-nosnippet>92</a> }
<a href=#93 id=93 data-nosnippet>93</a>
<a href=#94 id=94 data-nosnippet>94</a> <span class="doccomment">/// Get compression ratio
<a href=#95 id=95 data-nosnippet>95</a> </span><span class="attr">#[must_use]
<a href=#96 id=96 data-nosnippet>96</a> #[allow(clippy::cast_precision_loss)]
<a href=#97 id=97 data-nosnippet>97</a> </span><span class="kw">pub fn </span>compression_ratio(<span class="kw-2">&</span><span class="self">self</span>) -> f64 {
<a href=#98 id=98 data-nosnippet>98</a> <span class="self">self</span>.compressed_size <span class="kw">as </span>f64 / <span class="self">self</span>.original_size <span class="kw">as </span>f64
<a href=#99 id=99 data-nosnippet>99</a> }
<a href=#100 id=100 data-nosnippet>100</a>
<a href=#101 id=101 data-nosnippet>101</a> <span class="doccomment">/// Get compressed size
<a href=#102 id=102 data-nosnippet>102</a> </span><span class="attr">#[must_use]
<a href=#103 id=103 data-nosnippet>103</a> </span><span class="kw">pub fn </span>compressed_size(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#104 id=104 data-nosnippet>104</a> <span class="self">self</span>.compressed_size
<a href=#105 id=105 data-nosnippet>105</a> }
<a href=#106 id=106 data-nosnippet>106</a>
<a href=#107 id=107 data-nosnippet>107</a> <span class="doccomment">/// Get original size
<a href=#108 id=108 data-nosnippet>108</a> </span><span class="attr">#[must_use]
<a href=#109 id=109 data-nosnippet>109</a> </span><span class="kw">pub fn </span>original_size(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#110 id=110 data-nosnippet>110</a> <span class="self">self</span>.original_size
<a href=#111 id=111 data-nosnippet>111</a> }
<a href=#112 id=112 data-nosnippet>112</a>}
<a href=#113 id=113 data-nosnippet>113</a>
<a href=#114 id=114 data-nosnippet>114</a><span class="kw">impl </span>Drop <span class="kw">for </span>CompressedAllocation<<span class="lifetime">'_</span>> {
<a href=#115 id=115 data-nosnippet>115</a> <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) {
<a href=#116 id=116 data-nosnippet>116</a> <span class="kw">let _ </span>= <span class="self">self</span>.pool.deallocate(<span class="self">self</span>.ptr, <span class="self">self</span>.compressed_size);
<a href=#117 id=117 data-nosnippet>117</a> }
<a href=#118 id=118 data-nosnippet>118</a>}
<a href=#119 id=119 data-nosnippet>119</a>
<a href=#120 id=120 data-nosnippet>120</a><span class="doccomment">/// Secure memory pool with cryptographic features
<a href=#121 id=121 data-nosnippet>121</a></span><span class="attr">#[derive(Debug)]
<a href=#122 id=122 data-nosnippet>122</a></span><span class="kw">pub struct </span>SecureMemoryPool {
<a href=#123 id=123 data-nosnippet>123</a> pool: MemoryPool,
<a href=#124 id=124 data-nosnippet>124</a> encryption_key: <span class="prelude-ty">Option</span><Vec<u8>>,
<a href=#125 id=125 data-nosnippet>125</a>}
<a href=#126 id=126 data-nosnippet>126</a>
<a href=#127 id=127 data-nosnippet>127</a><span class="kw">impl </span>SecureMemoryPool {
<a href=#128 id=128 data-nosnippet>128</a> <span class="doccomment">/// Create a new secure memory pool
<a href=#129 id=129 data-nosnippet>129</a> </span><span class="attr">#[must_use]
<a href=#130 id=130 data-nosnippet>130</a> </span><span class="kw">pub fn </span>new(config: MemoryPoolConfig, encryption_key: <span class="prelude-ty">Option</span><Vec<u8>>) -> <span class="self">Self </span>{
<a href=#131 id=131 data-nosnippet>131</a> <span class="self">Self </span>{
<a href=#132 id=132 data-nosnippet>132</a> pool: MemoryPool::new(config),
<a href=#133 id=133 data-nosnippet>133</a> encryption_key,
<a href=#134 id=134 data-nosnippet>134</a> }
<a href=#135 id=135 data-nosnippet>135</a> }
<a href=#136 id=136 data-nosnippet>136</a>
<a href=#137 id=137 data-nosnippet>137</a> <span class="doccomment">/// Allocate and encrypt data
<a href=#138 id=138 data-nosnippet>138</a> ///
<a href=#139 id=139 data-nosnippet>139</a> /// # Errors
<a href=#140 id=140 data-nosnippet>140</a> ///
<a href=#141 id=141 data-nosnippet>141</a> /// Returns an `std::io::Error` if allocation fails.
<a href=#142 id=142 data-nosnippet>142</a> </span><span class="kw">pub fn </span>allocate_encrypted(<span class="kw-2">&</span><span class="self">self</span>, data: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><SecureAllocation<<span class="lifetime">'_</span>>, std::io::Error> {
<a href=#143 id=143 data-nosnippet>143</a> <span class="kw">let </span>encrypted = <span class="kw">if let </span><span class="prelude-val">Some</span>(key) = <span class="kw-2">&</span><span class="self">self</span>.encryption_key {
<a href=#144 id=144 data-nosnippet>144</a> <span class="comment">// Simple XOR encryption for demonstration
<a href=#145 id=145 data-nosnippet>145</a> </span>data.iter()
<a href=#146 id=146 data-nosnippet>146</a> .zip(key.iter().cycle())
<a href=#147 id=147 data-nosnippet>147</a> .map(|(d, k)| d ^ k)
<a href=#148 id=148 data-nosnippet>148</a> .collect()
<a href=#149 id=149 data-nosnippet>149</a> } <span class="kw">else </span>{
<a href=#150 id=150 data-nosnippet>150</a> data.to_vec()
<a href=#151 id=151 data-nosnippet>151</a> };
<a href=#152 id=152 data-nosnippet>152</a>
<a href=#153 id=153 data-nosnippet>153</a> <span class="kw">let </span>ptr = <span class="self">self</span>.pool.allocate(encrypted.len())<span class="question-mark">?</span>;
<a href=#154 id=154 data-nosnippet>154</a> <span class="kw">unsafe </span>{
<a href=#155 id=155 data-nosnippet>155</a> ptr.copy_from(encrypted.as_ptr(), encrypted.len());
<a href=#156 id=156 data-nosnippet>156</a> }
<a href=#157 id=157 data-nosnippet>157</a>
<a href=#158 id=158 data-nosnippet>158</a> <span class="prelude-val">Ok</span>(SecureAllocation {
<a href=#159 id=159 data-nosnippet>159</a> ptr,
<a href=#160 id=160 data-nosnippet>160</a> size: encrypted.len(),
<a href=#161 id=161 data-nosnippet>161</a> pool: <span class="kw-2">&</span><span class="self">self</span>.pool,
<a href=#162 id=162 data-nosnippet>162</a> encrypted: <span class="self">self</span>.encryption_key.is_some(),
<a href=#163 id=163 data-nosnippet>163</a> })
<a href=#164 id=164 data-nosnippet>164</a> }
<a href=#165 id=165 data-nosnippet>165</a>
<a href=#166 id=166 data-nosnippet>166</a> <span class="doccomment">/// Get pool statistics
<a href=#167 id=167 data-nosnippet>167</a> </span><span class="attr">#[must_use]
<a href=#168 id=168 data-nosnippet>168</a> </span><span class="kw">pub fn </span>stats(<span class="kw-2">&</span><span class="self">self</span>) -> Arc<MemoryStats> {
<a href=#169 id=169 data-nosnippet>169</a> <span class="self">self</span>.pool.stats()
<a href=#170 id=170 data-nosnippet>170</a> }
<a href=#171 id=171 data-nosnippet>171</a>
<a href=#172 id=172 data-nosnippet>172</a> <span class="doccomment">/// Check if encryption is enabled
<a href=#173 id=173 data-nosnippet>173</a> </span><span class="attr">#[must_use]
<a href=#174 id=174 data-nosnippet>174</a> </span><span class="kw">pub fn </span>is_encrypted(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<a href=#175 id=175 data-nosnippet>175</a> <span class="self">self</span>.encryption_key.is_some()
<a href=#176 id=176 data-nosnippet>176</a> }
<a href=#177 id=177 data-nosnippet>177</a>}
<a href=#178 id=178 data-nosnippet>178</a>
<a href=#179 id=179 data-nosnippet>179</a><span class="doccomment">/// Guard for secure memory allocation
<a href=#180 id=180 data-nosnippet>180</a></span><span class="attr">#[derive(Debug)]
<a href=#181 id=181 data-nosnippet>181</a></span><span class="kw">pub struct </span>SecureAllocation<<span class="lifetime">'a</span>> {
<a href=#182 id=182 data-nosnippet>182</a> ptr: <span class="kw-2">*mut </span>u8,
<a href=#183 id=183 data-nosnippet>183</a> size: usize,
<a href=#184 id=184 data-nosnippet>184</a> pool: <span class="kw-2">&</span><span class="lifetime">'a </span>MemoryPool,
<a href=#185 id=185 data-nosnippet>185</a> encrypted: bool,
<a href=#186 id=186 data-nosnippet>186</a>}
<a href=#187 id=187 data-nosnippet>187</a>
<a href=#188 id=188 data-nosnippet>188</a><span class="kw">impl </span>SecureAllocation<<span class="lifetime">'_</span>> {
<a href=#189 id=189 data-nosnippet>189</a> <span class="doccomment">/// Decrypt and get original data
<a href=#190 id=190 data-nosnippet>190</a> ///
<a href=#191 id=191 data-nosnippet>191</a> /// # Errors
<a href=#192 id=192 data-nosnippet>192</a> ///
<a href=#193 id=193 data-nosnippet>193</a> /// Returns an `std::io::Error` if decryption fails.
<a href=#194 id=194 data-nosnippet>194</a> </span><span class="kw">pub fn </span>decrypt(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#195 id=195 data-nosnippet>195</a> <span class="kw">let </span>encrypted_data = <span class="kw">unsafe </span>{ from_raw_parts(<span class="self">self</span>.ptr, <span class="self">self</span>.size) };
<a href=#196 id=196 data-nosnippet>196</a>
<a href=#197 id=197 data-nosnippet>197</a> <span class="kw">if </span>!<span class="self">self</span>.encrypted {
<a href=#198 id=198 data-nosnippet>198</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(encrypted_data.to_vec());
<a href=#199 id=199 data-nosnippet>199</a> }
<a href=#200 id=200 data-nosnippet>200</a>
<a href=#201 id=201 data-nosnippet>201</a> <span class="comment">// Simple XOR decryption
<a href=#202 id=202 data-nosnippet>202</a> </span><span class="kw">let </span>decrypted = encrypted_data
<a href=#203 id=203 data-nosnippet>203</a> .iter()
<a href=#204 id=204 data-nosnippet>204</a> .zip(key.iter().cycle())
<a href=#205 id=205 data-nosnippet>205</a> .map(|(d, k)| d ^ k)
<a href=#206 id=206 data-nosnippet>206</a> .collect();
<a href=#207 id=207 data-nosnippet>207</a>
<a href=#208 id=208 data-nosnippet>208</a> <span class="prelude-val">Ok</span>(decrypted)
<a href=#209 id=209 data-nosnippet>209</a> }
<a href=#210 id=210 data-nosnippet>210</a>
<a href=#211 id=211 data-nosnippet>211</a> <span class="doccomment">/// Secure wipe (overwrite with zeros)
<a href=#212 id=212 data-nosnippet>212</a> </span><span class="kw">pub fn </span>secure_wipe(<span class="kw-2">&mut </span><span class="self">self</span>) {
<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">unsafe </span>{
<a href=#214 id=214 data-nosnippet>214</a> std::ptr::write_bytes(<span class="self">self</span>.ptr, <span class="number">0</span>, <span class="self">self</span>.size);
<a href=#215 id=215 data-nosnippet>215</a> }
<a href=#216 id=216 data-nosnippet>216</a> }
<a href=#217 id=217 data-nosnippet>217</a>
<a href=#218 id=218 data-nosnippet>218</a> <span class="doccomment">/// Get allocation size
<a href=#219 id=219 data-nosnippet>219</a> </span><span class="attr">#[must_use]
<a href=#220 id=220 data-nosnippet>220</a> </span><span class="kw">pub fn </span>size(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#221 id=221 data-nosnippet>221</a> <span class="self">self</span>.size
<a href=#222 id=222 data-nosnippet>222</a> }
<a href=#223 id=223 data-nosnippet>223</a>
<a href=#224 id=224 data-nosnippet>224</a> <span class="doccomment">/// Check if data is encrypted
<a href=#225 id=225 data-nosnippet>225</a> </span><span class="attr">#[must_use]
<a href=#226 id=226 data-nosnippet>226</a> </span><span class="kw">pub fn </span>is_encrypted(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<a href=#227 id=227 data-nosnippet>227</a> <span class="self">self</span>.encrypted
<a href=#228 id=228 data-nosnippet>228</a> }
<a href=#229 id=229 data-nosnippet>229</a>}
<a href=#230 id=230 data-nosnippet>230</a>
<a href=#231 id=231 data-nosnippet>231</a><span class="kw">impl </span>Drop <span class="kw">for </span>SecureAllocation<<span class="lifetime">'_</span>> {
<a href=#232 id=232 data-nosnippet>232</a> <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) {
<a href=#233 id=233 data-nosnippet>233</a> <span class="self">self</span>.secure_wipe();
<a href=#234 id=234 data-nosnippet>234</a> <span class="kw">let _ </span>= <span class="self">self</span>.pool.deallocate(<span class="self">self</span>.ptr, <span class="self">self</span>.size);
<a href=#235 id=235 data-nosnippet>235</a> }
<a href=#236 id=236 data-nosnippet>236</a>}
<a href=#237 id=237 data-nosnippet>237</a>
<a href=#238 id=238 data-nosnippet>238</a><span class="doccomment">/// Memory-mapped file pool for large data
<a href=#239 id=239 data-nosnippet>239</a></span><span class="attr">#[derive(Debug)]
<a href=#240 id=240 data-nosnippet>240</a></span><span class="kw">pub struct </span>MemoryMappedPool {
<a href=#241 id=241 data-nosnippet>241</a> temp_file: NamedTempFile,
<a href=#242 id=242 data-nosnippet>242</a> mapped_data: Mutex<Vec<u8>>,
<a href=#243 id=243 data-nosnippet>243</a> stats: ArcSwap<MemoryStats>,
<a href=#244 id=244 data-nosnippet>244</a>}
<a href=#245 id=245 data-nosnippet>245</a>
<a href=#246 id=246 data-nosnippet>246</a><span class="kw">impl </span>MemoryMappedPool {
<a href=#247 id=247 data-nosnippet>247</a> <span class="doccomment">/// Create a new memory-mapped pool
<a href=#248 id=248 data-nosnippet>248</a> ///
<a href=#249 id=249 data-nosnippet>249</a> /// # Errors
<a href=#250 id=250 data-nosnippet>250</a> ///
<a href=#251 id=251 data-nosnippet>251</a> /// Returns an `std::io::Error` if file creation fails.
<a href=#252 id=252 data-nosnippet>252</a> </span><span class="kw">pub fn </span>new(capacity: usize) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, std::io::Error> {
<a href=#253 id=253 data-nosnippet>253</a> <span class="kw">let </span><span class="kw-2">mut </span>temp_file = NamedTempFile::new()<span class="question-mark">?</span>;
<a href=#254 id=254 data-nosnippet>254</a> temp_file.as_file_mut().set_len(capacity <span class="kw">as </span>u64)<span class="question-mark">?</span>;
<a href=#255 id=255 data-nosnippet>255</a>
<a href=#256 id=256 data-nosnippet>256</a> <span class="prelude-val">Ok</span>(<span class="self">Self </span>{
<a href=#257 id=257 data-nosnippet>257</a> temp_file,
<a href=#258 id=258 data-nosnippet>258</a> mapped_data: Mutex::new(<span class="macro">vec!</span>[<span class="number">0u8</span>; capacity]),
<a href=#259 id=259 data-nosnippet>259</a> stats: ArcSwap::new(Arc::new(MemoryStats::default())),
<a href=#260 id=260 data-nosnippet>260</a> })
<a href=#261 id=261 data-nosnippet>261</a> }
<a href=#262 id=262 data-nosnippet>262</a>
<a href=#263 id=263 data-nosnippet>263</a> <span class="doccomment">/// Write data to mapped memory
<a href=#264 id=264 data-nosnippet>264</a> ///
<a href=#265 id=265 data-nosnippet>265</a> /// # Errors
<a href=#266 id=266 data-nosnippet>266</a> ///
<a href=#267 id=267 data-nosnippet>267</a> /// Returns an `std::io::Error` if the write exceeds capacity.
<a href=#268 id=268 data-nosnippet>268</a> </span><span class="kw">pub fn </span>write_data(<span class="kw-2">&</span><span class="self">self</span>, offset: usize, data: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><(), std::io::Error> {
<a href=#269 id=269 data-nosnippet>269</a> <span class="kw">if </span>offset + data.len() > <span class="self">self</span>.mapped_data.lock().len() {
<a href=#270 id=270 data-nosnippet>270</a> <span class="kw">return </span><span class="prelude-val">Err</span>(std::io::Error::new(
<a href=#271 id=271 data-nosnippet>271</a> std::io::ErrorKind::InvalidInput,
<a href=#272 id=272 data-nosnippet>272</a> <span class="string">"Data exceeds capacity"</span>,
<a href=#273 id=273 data-nosnippet>273</a> ));
<a href=#274 id=274 data-nosnippet>274</a> }
<a href=#275 id=275 data-nosnippet>275</a>
<a href=#276 id=276 data-nosnippet>276</a> <span class="kw">let </span><span class="kw-2">mut </span>mapped = <span class="self">self</span>.mapped_data.lock();
<a href=#277 id=277 data-nosnippet>277</a> mapped[offset..offset + data.len()].copy_from_slice(data);
<a href=#278 id=278 data-nosnippet>278</a>
<a href=#279 id=279 data-nosnippet>279</a> <span class="comment">// Update stats
<a href=#280 id=280 data-nosnippet>280</a> </span><span class="kw">let </span><span class="kw-2">mut </span>new_stats = (<span class="kw-2">**</span><span class="self">self</span>.stats.load()).clone();
<a href=#281 id=281 data-nosnippet>281</a> new_stats.allocated_bytes += data.len();
<a href=#282 id=282 data-nosnippet>282</a> <span class="self">self</span>.stats.store(Arc::new(new_stats));
<a href=#283 id=283 data-nosnippet>283</a>
<a href=#284 id=284 data-nosnippet>284</a> <span class="prelude-val">Ok</span>(())
<a href=#285 id=285 data-nosnippet>285</a> }
<a href=#286 id=286 data-nosnippet>286</a>
<a href=#287 id=287 data-nosnippet>287</a> <span class="doccomment">/// Read data from mapped memory
<a href=#288 id=288 data-nosnippet>288</a> ///
<a href=#289 id=289 data-nosnippet>289</a> /// # Errors
<a href=#290 id=290 data-nosnippet>290</a> ///
<a href=#291 id=291 data-nosnippet>291</a> /// Returns an `std::io::Error` if the read exceeds capacity.
<a href=#292 id=292 data-nosnippet>292</a> </span><span class="kw">pub fn </span>read_data(<span class="kw-2">&</span><span class="self">self</span>, offset: usize, length: usize) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#293 id=293 data-nosnippet>293</a> <span class="kw">let </span>mapped = <span class="self">self</span>.mapped_data.lock();
<a href=#294 id=294 data-nosnippet>294</a> <span class="kw">if </span>offset + length > mapped.len() {
<a href=#295 id=295 data-nosnippet>295</a> <span class="kw">return </span><span class="prelude-val">Err</span>(std::io::Error::new(
<a href=#296 id=296 data-nosnippet>296</a> std::io::ErrorKind::InvalidInput,
<a href=#297 id=297 data-nosnippet>297</a> <span class="string">"Read exceeds capacity"</span>,
<a href=#298 id=298 data-nosnippet>298</a> ));
<a href=#299 id=299 data-nosnippet>299</a> }
<a href=#300 id=300 data-nosnippet>300</a>
<a href=#301 id=301 data-nosnippet>301</a> <span class="prelude-val">Ok</span>(mapped[offset..offset + length].to_vec())
<a href=#302 id=302 data-nosnippet>302</a> }
<a href=#303 id=303 data-nosnippet>303</a>
<a href=#304 id=304 data-nosnippet>304</a> <span class="doccomment">/// Flush to disk
<a href=#305 id=305 data-nosnippet>305</a> ///
<a href=#306 id=306 data-nosnippet>306</a> /// # Errors
<a href=#307 id=307 data-nosnippet>307</a> ///
<a href=#308 id=308 data-nosnippet>308</a> /// Returns an `std::io::Error` if flushing fails.
<a href=#309 id=309 data-nosnippet>309</a> </span><span class="kw">pub fn </span>flush(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><(), std::io::Error> {
<a href=#310 id=310 data-nosnippet>310</a> <span class="self">self</span>.temp_file.as_file().sync_all()
<a href=#311 id=311 data-nosnippet>311</a> }
<a href=#312 id=312 data-nosnippet>312</a>
<a href=#313 id=313 data-nosnippet>313</a> <span class="doccomment">/// Get statistics
<a href=#314 id=314 data-nosnippet>314</a> </span><span class="attr">#[must_use]
<a href=#315 id=315 data-nosnippet>315</a> </span><span class="kw">pub fn </span>stats(<span class="kw-2">&</span><span class="self">self</span>) -> Arc<MemoryStats> {
<a href=#316 id=316 data-nosnippet>316</a> <span class="self">self</span>.stats.load_full()
<a href=#317 id=317 data-nosnippet>317</a> }
<a href=#318 id=318 data-nosnippet>318</a>
<a href=#319 id=319 data-nosnippet>319</a> <span class="doccomment">/// Get capacity
<a href=#320 id=320 data-nosnippet>320</a> </span><span class="attr">#[must_use]
<a href=#321 id=321 data-nosnippet>321</a> </span><span class="kw">pub fn </span>capacity(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#322 id=322 data-nosnippet>322</a> <span class="self">self</span>.mapped_data.lock().len()
<a href=#323 id=323 data-nosnippet>323</a> }
<a href=#324 id=324 data-nosnippet>324</a>}
<a href=#325 id=325 data-nosnippet>325</a>
<a href=#326 id=326 data-nosnippet>326</a><span class="doccomment">/// Parallel memory operations using `fork_union`
<a href=#327 id=327 data-nosnippet>327</a></span><span class="attr">#[derive(Debug)]
<a href=#328 id=328 data-nosnippet>328</a></span><span class="kw">pub struct </span>ParallelMemoryProcessor {
<a href=#329 id=329 data-nosnippet>329</a> pool: Arc<std::sync::Mutex<Vec<std::thread::JoinHandle<()>>>>,
<a href=#330 id=330 data-nosnippet>330</a>}
<a href=#331 id=331 data-nosnippet>331</a>
<a href=#332 id=332 data-nosnippet>332</a><span class="kw">impl </span>ParallelMemoryProcessor {
<a href=#333 id=333 data-nosnippet>333</a> <span class="doccomment">/// Create a new parallel processor
<a href=#334 id=334 data-nosnippet>334</a> </span><span class="attr">#[must_use]
<a href=#335 id=335 data-nosnippet>335</a> </span><span class="kw">pub fn </span>new(_num_threads: usize) -> <span class="self">Self </span>{
<a href=#336 id=336 data-nosnippet>336</a> <span class="self">Self </span>{
<a href=#337 id=337 data-nosnippet>337</a> pool: Arc::new(std::sync::Mutex::new(Vec::new())),
<a href=#338 id=338 data-nosnippet>338</a> }
<a href=#339 id=339 data-nosnippet>339</a> }
<a href=#340 id=340 data-nosnippet>340</a>
<a href=#341 id=341 data-nosnippet>341</a> <span class="doccomment">/// Process multiple memory blocks in parallel
<a href=#342 id=342 data-nosnippet>342</a> </span><span class="kw">pub fn </span>process_blocks<F, T>(<span class="kw-2">&</span><span class="self">self</span>, blocks: Vec<Vec<u8>>, processor: F) -> Vec<T>
<a href=#343 id=343 data-nosnippet>343</a> <span class="kw">where
<a href=#344 id=344 data-nosnippet>344</a> </span>F: Fn(Vec<u8>) -> T + Send + Sync + <span class="lifetime">'static</span>,
<a href=#345 id=345 data-nosnippet>345</a> T: Send + <span class="lifetime">'static</span>,
<a href=#346 id=346 data-nosnippet>346</a> {
<a href=#347 id=347 data-nosnippet>347</a> <span class="kw">let </span>results: Vec<T> = blocks.into_iter().map(processor).collect();
<a href=#348 id=348 data-nosnippet>348</a> results
<a href=#349 id=349 data-nosnippet>349</a> }
<a href=#350 id=350 data-nosnippet>350</a>
<a href=#351 id=351 data-nosnippet>351</a> <span class="doccomment">/// Parallel compression of multiple blocks
<a href=#352 id=352 data-nosnippet>352</a> </span><span class="attr">#[must_use]
<a href=#353 id=353 data-nosnippet>353</a> </span><span class="kw">pub fn </span>compress_blocks(
<a href=#354 id=354 data-nosnippet>354</a> <span class="kw-2">&</span><span class="self">self</span>,
<a href=#355 id=355 data-nosnippet>355</a> blocks: Vec<Vec<u8>>,
<a href=#356 id=356 data-nosnippet>356</a> level: u32,
<a href=#357 id=357 data-nosnippet>357</a> ) -> Vec<<span class="prelude-ty">Result</span><Vec<u8>, std::io::Error>> {
<a href=#358 id=358 data-nosnippet>358</a> <span class="self">self</span>.process_blocks(blocks, <span class="kw">move </span>|block| compress_data(<span class="kw-2">&</span>block, level))
<a href=#359 id=359 data-nosnippet>359</a> }
<a href=#360 id=360 data-nosnippet>360</a>
<a href=#361 id=361 data-nosnippet>361</a> <span class="doccomment">/// Parallel hashing of multiple blocks
<a href=#362 id=362 data-nosnippet>362</a> </span><span class="attr">#[must_use]
<a href=#363 id=363 data-nosnippet>363</a> </span><span class="kw">pub fn </span>hash_blocks(<span class="kw-2">&</span><span class="self">self</span>, blocks: Vec<Vec<u8>>) -> Vec<u64> {
<a href=#364 id=364 data-nosnippet>364</a> <span class="kw">use </span>ahash::AHasher;
<a href=#365 id=365 data-nosnippet>365</a> <span class="kw">use </span>std::hash::Hasher;
<a href=#366 id=366 data-nosnippet>366</a>
<a href=#367 id=367 data-nosnippet>367</a> <span class="self">self</span>.process_blocks(blocks, |block| {
<a href=#368 id=368 data-nosnippet>368</a> <span class="kw">let </span><span class="kw-2">mut </span>hasher = AHasher::default();
<a href=#369 id=369 data-nosnippet>369</a> hasher.write(<span class="kw-2">&</span>block);
<a href=#370 id=370 data-nosnippet>370</a> hasher.finish()
<a href=#371 id=371 data-nosnippet>371</a> })
<a href=#372 id=372 data-nosnippet>372</a> }
<a href=#373 id=373 data-nosnippet>373</a>
<a href=#374 id=374 data-nosnippet>374</a> <span class="doccomment">/// Get number of active threads
<a href=#375 id=375 data-nosnippet>375</a> ///
<a href=#376 id=376 data-nosnippet>376</a> /// # Panics
<a href=#377 id=377 data-nosnippet>377</a> ///
<a href=#378 id=378 data-nosnippet>378</a> /// This function may panic if the mutex is poisoned.
<a href=#379 id=379 data-nosnippet>379</a> </span><span class="attr">#[must_use]
<a href=#380 id=380 data-nosnippet>380</a> </span><span class="kw">pub fn </span>active_threads(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
<a href=#381 id=381 data-nosnippet>381</a> <span class="self">self</span>.pool.lock().unwrap().len()
<a href=#382 id=382 data-nosnippet>382</a> }
<a href=#383 id=383 data-nosnippet>383</a>}
<a href=#384 id=384 data-nosnippet>384</a>
<a href=#385 id=385 data-nosnippet>385</a><span class="kw">impl </span>Default <span class="kw">for </span>ParallelMemoryProcessor {
<a href=#386 id=386 data-nosnippet>386</a> <span class="kw">fn </span>default() -> <span class="self">Self </span>{
<a href=#387 id=387 data-nosnippet>387</a> <span class="self">Self</span>::new(<span class="number">4</span>)
<a href=#388 id=388 data-nosnippet>388</a> }
<a href=#389 id=389 data-nosnippet>389</a>}
<a href=#390 id=390 data-nosnippet>390</a>
<a href=#391 id=391 data-nosnippet>391</a><span class="doccomment">/// Utility functions for compression
<a href=#392 id=392 data-nosnippet>392</a></span><span class="kw">fn </span>compress_data(data: <span class="kw-2">&</span>[u8], level: u32) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#393 id=393 data-nosnippet>393</a> <span class="kw">let </span><span class="kw-2">mut </span>output = Vec::new();
<a href=#394 id=394 data-nosnippet>394</a> {
<a href=#395 id=395 data-nosnippet>395</a> <span class="kw">let </span><span class="kw-2">mut </span>compressor = CompressorWriter::new(<span class="kw-2">&mut </span>output, <span class="number">4096</span>, level, level);
<a href=#396 id=396 data-nosnippet>396</a> compressor.write_all(data)<span class="question-mark">?</span>;
<a href=#397 id=397 data-nosnippet>397</a> compressor.flush()<span class="question-mark">?</span>;
<a href=#398 id=398 data-nosnippet>398</a> }
<a href=#399 id=399 data-nosnippet>399</a> <span class="prelude-val">Ok</span>(output)
<a href=#400 id=400 data-nosnippet>400</a>}
<a href=#401 id=401 data-nosnippet>401</a>
<a href=#402 id=402 data-nosnippet>402</a><span class="kw">fn </span>decompress_data(data: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><Vec<u8>, std::io::Error> {
<a href=#403 id=403 data-nosnippet>403</a> <span class="kw">let </span><span class="kw-2">mut </span>decompressor = Decompressor::new(data, <span class="number">4096</span>);
<a href=#404 id=404 data-nosnippet>404</a> <span class="kw">let </span><span class="kw-2">mut </span>output = Vec::new();
<a href=#405 id=405 data-nosnippet>405</a> decompressor.read_to_end(<span class="kw-2">&mut </span>output)<span class="question-mark">?</span>;
<a href=#406 id=406 data-nosnippet>406</a> <span class="prelude-val">Ok</span>(output)
<a href=#407 id=407 data-nosnippet>407</a>}
<a href=#408 id=408 data-nosnippet>408</a>
<a href=#409 id=409 data-nosnippet>409</a><span class="doccomment">/// Get the global enhanced memory manager
<a href=#410 id=410 data-nosnippet>410</a></span><span class="attr">#[must_use]
<a href=#411 id=411 data-nosnippet>411</a></span><span class="kw">pub fn </span>global_enhanced_memory_manager() -> Arc<<span class="kw">super</span>::EnhancedMemoryManager> {
<a href=#412 id=412 data-nosnippet>412</a> Arc::new(<span class="kw">super</span>::EnhancedMemoryManager::new(<span class="number">4</span>))
<a href=#413 id=413 data-nosnippet>413</a>}</code></pre></div></section></main></body></html>