~ubuntu-branches/ubuntu/trusty/bmagic/trusty-proposed

<h1>bmalloc.h</h1><a href="a00085.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 /*

<a name="l00003"></a>00003

<a name="l00004"></a>00004 Permission is hereby granted, free of charge, to any person

<a name="l00005"></a>00005 obtaining a copy of this software and associated documentation

<a name="l00006"></a>00006 files (the "Software"), to deal in the Software without restriction,

<a name="l00007"></a>00007 including without limitation the rights to use, copy, modify, merge,

<a name="l00008"></a>00008 publish, distribute, sublicense, and/or sell copies of the Software,

<a name="l00009"></a>00009 and to permit persons to whom the Software is furnished to do so,

<a name="l00010"></a>00010 subject to the following conditions:

<a name="l00011"></a>00011

<a name="l00012"></a>00012 The above copyright notice and this permission notice shall be included

<a name="l00013"></a>00013 in all copies or substantial portions of the Software.

<a name="l00014"></a>00014

<a name="l00015"></a>00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

<a name="l00016"></a>00016 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

<a name="l00017"></a>00017 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

<a name="l00018"></a>00018 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

<a name="l00019"></a>00019 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

<a name="l00020"></a>00020 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

<a name="l00021"></a>00021 OTHER DEALINGS IN THE SOFTWARE.

<a name="l00022"></a>00022

<a name="l00023"></a>00023 For more information please visit: http://bmagic.sourceforge.net

<a name="l00024"></a>00024

<a name="l00025"></a>00025 */

<a name="l00026"></a>00026

<a name="l00027"></a>00027 #ifndef BMALLOC__H__INCLUDED__

<a name="l00028"></a>00028 #define BMALLOC__H__INCLUDED__

<a name="l00029"></a>00029

<a name="l00030"></a>00030 #include <stdlib.h>

<a name="l00031"></a>00031 #include <new>

<a name="l00032"></a>00032

<a name="l00033"></a>00033 namespace bm

<a name="l00034"></a>00034 {

<a name="l00035"></a>00035

<a name="l00036"></a>00036

<a name="l00037"></a>00037 /*! @defgroup alloc Memory Allocation

<a name="l00038"></a>00038 * Memory allocation related units

<a name="l00039"></a>00039 * @ingroup bmagic

<a name="l00040"></a>00040 *

<a name="l00041"></a>00041 * @{

<a name="l00042"></a>00042 */

<a name="l00043"></a>00043

<a name="l00044"></a>00044 /*!

<a name="l00045"></a>00045 @brief Default malloc based bitblock allocator class.

<a name="l00046"></a>00046

<a name="l00047"></a>00047 Functions allocate and deallocate conform to STL allocator specs.

<a name="l00048"></a>00048 @ingroup alloc

<a name="l00049"></a>00049 */

<a name="l00050"></a><a class="code" href="a00037.html">00050</a> class <a class="code" href="a00037.html" title="Default malloc based bitblock allocator class.">block_allocator</a>

<a name="l00051"></a>00051 {

<a name="l00052"></a>00052 public:

<a name="l00053"></a>00053 /**

<a name="l00054"></a>00054 The member function allocates storage for an array of n bm::word_t

<a name="l00055"></a>00055 elements, by calling malloc.

<a name="l00056"></a>00056 @return pointer to the allocated memory.

<a name="l00057"></a>00057 */

<a name="l00058"></a><a class="code" href="a00037.html#1b90487ff442d774f3f9d888fb0e54ba">00058</a> static <a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* <a class="code" href="a00037.html#1b90487ff442d774f3f9d888fb0e54ba" title="The member function allocates storage for an array of n bm::word_t elements, by calling...">allocate</a>(size_t n, const void *)

<a name="l00059"></a>00059 {

<a name="l00060"></a>00060 <a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* ptr;

<a name="l00061"></a>00061 #ifdef BMSSE2OPT

<a name="l00062"></a>00062 # ifdef _MSC_VER

<a name="l00063"></a>00063 ptr = (<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>*) ::_aligned_malloc(n * sizeof(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>), 16);

<a name="l00064"></a>00064 #else

<a name="l00065"></a>00065 ptr = (<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>*) ::_mm_malloc(n * sizeof(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>), 16);

<a name="l00066"></a>00066 # endif

<a name="l00067"></a>00067

<a name="l00068"></a>00068 #else

<a name="l00069"></a>00069 ptr = (<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>*) ::malloc(n * sizeof(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>));

<a name="l00070"></a>00070 #endif

<a name="l00071"></a>00071 if (!ptr)

<a name="l00072"></a>00072 {

<a name="l00073"></a>00073 throw std::bad_alloc();

<a name="l00074"></a>00074 }

<a name="l00075"></a>00075 return ptr;

<a name="l00076"></a>00076 }

<a name="l00077"></a>00077

<a name="l00078"></a>00078 /**

<a name="l00079"></a>00079 The member function frees storage for an array of n bm::word_t

<a name="l00080"></a>00080 elements, by calling free.

<a name="l00081"></a>00081 */

100

<a name="l00082"></a><a class="code" href="a00037.html#68a3365e4decb87fef88c2fa9028c8e2">00082</a> static void <a class="code" href="a00037.html#68a3365e4decb87fef88c2fa9028c8e2" title="The member function frees storage for an array of n bm::word_t elements, by calling...">deallocate</a>(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* p, size_t)

101

<a name="l00083"></a>00083 {

102

<a name="l00084"></a>00084 #ifdef BMSSE2OPT

103

<a name="l00085"></a>00085 # ifdef _MSC_VER

104

<a name="l00086"></a>00086 ::_aligned_free(p);

105

<a name="l00087"></a>00087 #else

106

<a name="l00088"></a>00088 ::_mm_free(p);

107

<a name="l00089"></a>00089 # endif

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<a name="l00090"></a>00090

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<a name="l00091"></a>00091 #else

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<a name="l00092"></a>00092 ::free(p);

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<a name="l00093"></a>00093 #endif

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<a name="l00094"></a>00094 }

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<a name="l00095"></a>00095

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<a name="l00096"></a>00096 };

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<a name="l00097"></a>00097

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<a name="l00098"></a>00098

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<a name="l00099"></a>00099 // -------------------------------------------------------------------------

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<a name="l00100"></a>00100

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<a name="l00101"></a>00101 /*! @brief Default malloc based bitblock allocator class.

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<a name="l00102"></a>00102

121

<a name="l00103"></a>00103 Functions allocate and deallocate conform to STL allocator specs.

122

<a name="l00104"></a>00104 */

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<a name="l00105"></a><a class="code" href="a00077.html">00105</a> class <a class="code" href="a00077.html" title="Default malloc based bitblock allocator class.">ptr_allocator</a>

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<a name="l00106"></a>00106 {

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<a name="l00107"></a>00107 public:

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<a name="l00108"></a>00108 /**

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<a name="l00109"></a>00109 The member function allocates storage for an array of n void*

128

<a name="l00110"></a>00110 elements, by calling malloc.

129

<a name="l00111"></a>00111 @return pointer to the allocated memory.

130

<a name="l00112"></a>00112 */

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<a name="l00113"></a><a class="code" href="a00077.html#2ed8d55900bad5292e06be4af220aa38">00113</a> static void* <a class="code" href="a00077.html#2ed8d55900bad5292e06be4af220aa38" title="The member function allocates storage for an array of n void* elements, by calling...">allocate</a>(size_t n, const void *)

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<a name="l00114"></a>00114 {

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<a name="l00115"></a>00115 void* ptr = ::malloc(n * sizeof(void*));

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<a name="l00116"></a>00116 if (!ptr)

135

<a name="l00117"></a>00117 {

136

<a name="l00118"></a>00118 throw std::bad_alloc();

137

<a name="l00119"></a>00119 }

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<a name="l00120"></a>00120 return ptr;

139

<a name="l00121"></a>00121 }

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<a name="l00122"></a>00122

141

<a name="l00123"></a>00123 /**

142

<a name="l00124"></a>00124 The member function frees storage for an array of n bm::word_t

143

<a name="l00125"></a>00125 elements, by calling free.

144

<a name="l00126"></a>00126 */

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<a name="l00127"></a><a class="code" href="a00077.html#d7636f410ac891c14621d7bc3784a00c">00127</a> static void <a class="code" href="a00077.html#d7636f410ac891c14621d7bc3784a00c" title="The member function frees storage for an array of n bm::word_t elements, by calling...">deallocate</a>(void* p, size_t)

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<a name="l00128"></a>00128 {

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<a name="l00129"></a>00129 ::free(p);

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<a name="l00130"></a>00130 }

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<a name="l00131"></a>00131 };

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<a name="l00132"></a>00132

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<a name="l00133"></a>00133 // -------------------------------------------------------------------------

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<a name="l00134"></a>00134

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<a name="l00135"></a>00135 /*! @brief BM style allocator adapter.

154

<a name="l00136"></a>00136

155

<a name="l00137"></a>00137 Template takes two parameters BA - allocator object for bit blocks and

156

<a name="l00138"></a>00138 PA - allocator object for pointer blocks.

157

<a name="l00139"></a>00139 */

158

<a name="l00140"></a><a class="code" href="a00073.html">00140</a> template<class BA, class PA> class <a class="code" href="a00073.html" title="BM style allocator adapter.">mem_alloc</a>

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<a name="l00141"></a>00141 {

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<a name="l00142"></a>00142 public:

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<a name="l00143"></a><a class="code" href="a00073.html#911e642666fb01c95152f34a8eea9d60">00143</a> typedef BA <a class="code" href="a00073.html#911e642666fb01c95152f34a8eea9d60">block_allocator_type</a>;

162

<a name="l00144"></a><a class="code" href="a00073.html#3585fb098e6798fe5aea1bd5dfaaa874">00144</a> typedef PA <a class="code" href="a00073.html#3585fb098e6798fe5aea1bd5dfaaa874">ptr_allocator_type</a>;

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<a name="l00145"></a>00145

164

<a name="l00146"></a>00146 public:

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<a name="l00147"></a>00147

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<a name="l00148"></a><a class="code" href="a00073.html#0c83df2f625583b6958fb34d807b0014">00148</a> <a class="code" href="a00073.html#0c83df2f625583b6958fb34d807b0014">mem_alloc</a>(const BA& block_alloc = BA(), const PA& ptr_alloc = PA())

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<a name="l00149"></a>00149 : block_alloc_(block_alloc),

168

<a name="l00150"></a>00150 ptr_alloc_(ptr_alloc)

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<a name="l00151"></a>00151 {}

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<a name="l00152"></a>00152

171

<a name="l00153"></a>00153 /*! @brief Returns copy of the block allocator object

172

<a name="l00154"></a>00154 */

173

<a name="l00155"></a><a class="code" href="a00073.html#f77ba616b20ffaa1a0589ed537697e71">00155</a> <a class="code" href="a00073.html#911e642666fb01c95152f34a8eea9d60">block_allocator_type</a> <a class="code" href="a00073.html#f77ba616b20ffaa1a0589ed537697e71" title="Returns copy of the block allocator object.">get_block_allocator</a>() const

174

<a name="l00156"></a>00156 {

175

<a name="l00157"></a>00157 return BA(block_alloc_);

176

<a name="l00158"></a>00158 }

177

<a name="l00159"></a>00159

178

<a name="l00160"></a>00160 /*! @brief Returns copy of the ptr allocator object

179

<a name="l00161"></a>00161 */

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<a name="l00162"></a><a class="code" href="a00073.html#16191ffe1d864b2f4f1e72c290768c82">00162</a> <a class="code" href="a00073.html#3585fb098e6798fe5aea1bd5dfaaa874">ptr_allocator_type</a> <a class="code" href="a00073.html#16191ffe1d864b2f4f1e72c290768c82" title="Returns copy of the ptr allocator object.">get_ptr_allocator</a>() const

181

<a name="l00163"></a>00163 {

182

<a name="l00164"></a>00164 return PA(block_alloc_);

183

<a name="l00165"></a>00165 }

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<a name="l00166"></a>00166

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<a name="l00167"></a>00167

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<a name="l00168"></a>00168 /*! @brief Allocates and returns bit block.

187

<a name="l00169"></a>00169 */

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<a name="l00170"></a><a class="code" href="a00073.html#b31dccae175d6b418b8a7a9dcd27f372">00170</a> <a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* <a class="code" href="a00073.html#b31dccae175d6b418b8a7a9dcd27f372" title="Allocates and returns bit block.">alloc_bit_block</a>()

189

<a name="l00171"></a>00171 {

190

<a name="l00172"></a>00172 return block_alloc_.allocate(<a class="code" href="a00106.html#91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a>, 0);

191

<a name="l00173"></a>00173 }

192

<a name="l00174"></a>00174

193

<a name="l00175"></a>00175 /*! @brief Frees bit block allocated by alloc_bit_block.

194

<a name="l00176"></a>00176 */

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<a name="l00177"></a><a class="code" href="a00073.html#c24bb08fe7d54f499e05d7a35bc86fa6">00177</a> void <a class="code" href="a00073.html#c24bb08fe7d54f499e05d7a35bc86fa6" title="Frees bit block allocated by alloc_bit_block.">free_bit_block</a>(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* block)

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<a name="l00178"></a>00178 {

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<a name="l00179"></a>00179 if (<a class="code" href="a00087.html#13ba598909515339ceede09e3b9b0198">IS_VALID_ADDR</a>(block))

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<a name="l00180"></a>00180 block_alloc_.deallocate(block, <a class="code" href="a00106.html#91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a>);

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<a name="l00181"></a>00181 }

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<a name="l00182"></a>00182

201

<a name="l00183"></a>00183 /*! @brief Allocates GAP block using bit block allocator (BA).

202

<a name="l00184"></a>00184

203

<a name="l00185"></a>00185 GAP blocks in BM library belong to levels. Each level has a

204

<a name="l00186"></a>00186 correspondent length described in bm::gap_len_table<>.

205

<a name="l00187"></a>00187

206

<a name="l00188"></a>00188 @param level GAP block level.

207

<a name="l00189"></a>00189 */

208

<a name="l00190"></a><a class="code" href="a00073.html#6e5410e34efcc1e4af747b03795081dd">00190</a> <a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a>* <a class="code" href="a00073.html#6e5410e34efcc1e4af747b03795081dd" title="Allocates GAP block using bit block allocator (BA).">alloc_gap_block</a>(unsigned level,

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<a name="l00191"></a>00191 const <a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">gap_word_t</a>* glevel_len)

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<a name="l00192"></a>00192 {

211

<a name="l00193"></a>00193 <a class="code" href="a00087.html#a44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(level < <a class="code" href="a00106.html#773e9f5341919d58000bd54d50038733">bm::gap_levels</a>);

212

<a name="l00194"></a>00194 unsigned len =

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<a name="l00195"></a>00195 glevel_len[level] / (sizeof(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>) / sizeof(<a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">gap_word_t</a>));

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<a name="l00196"></a>00196

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<a name="l00197"></a>00197 return (<a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a>*)block_alloc_.allocate(len, 0);

216

<a name="l00198"></a>00198 }

217

<a name="l00199"></a>00199

218

<a name="l00200"></a>00200 /*! @brief Frees GAP block using bot block allocator (BA)

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<a name="l00201"></a>00201 */

220

<a name="l00202"></a><a class="code" href="a00073.html#0a54ad389bbfbb1bec04133b97c64d9b">00202</a> void <a class="code" href="a00073.html#0a54ad389bbfbb1bec04133b97c64d9b" title="Frees GAP block using bot block allocator (BA).">free_gap_block</a>(<a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a>* block,

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<a name="l00203"></a>00203 const <a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">gap_word_t</a>* glevel_len)

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<a name="l00204"></a>00204 {

223

<a name="l00205"></a>00205 <a class="code" href="a00087.html#a44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(<a class="code" href="a00087.html#13ba598909515339ceede09e3b9b0198">IS_VALID_ADDR</a>((<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>*)block));

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<a name="l00206"></a>00206

225

<a name="l00207"></a>00207 unsigned len = <a class="code" href="a00110.html#g0419ed06e2f0b7891e7d721546f5fb45" title="Returs GAP block capacity.">gap_capacity</a>(block, glevel_len);

226

<a name="l00208"></a>00208 len /= sizeof(<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>) / sizeof(<a class="code" href="a00106.html#c654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a>);

227

<a name="l00209"></a>00209 block_alloc_.deallocate((<a class="code" href="a00106.html#17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>*)block, len);

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<a name="l00210"></a>00210 }

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<a name="l00211"></a>00211

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<a name="l00212"></a>00212 /*! @brief Allocates block of pointers.

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<a name="l00213"></a>00213 */

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<a name="l00214"></a><a class="code" href="a00073.html#512a255f1afe5f3f8319e4b2b9c1eb4d">00214</a> void* <a class="code" href="a00073.html#512a255f1afe5f3f8319e4b2b9c1eb4d" title="Allocates block of pointers.">alloc_ptr</a>(unsigned size = <a class="code" href="a00106.html#40ad34d6c46a2fb20ba2baa7f95d80b4">bm::set_array_size</a>)

233

<a name="l00215"></a>00215 {

234

<a name="l00216"></a>00216 return ptr_alloc_.allocate(size, 0);

235

<a name="l00217"></a>00217 }

236

<a name="l00218"></a>00218

237

<a name="l00219"></a>00219 /*! @brief Frees block of pointers.

238

<a name="l00220"></a>00220 */

239

<a name="l00221"></a><a class="code" href="a00073.html#31bae2a441ae2d27724d2c938b45378c">00221</a> void <a class="code" href="a00073.html#31bae2a441ae2d27724d2c938b45378c" title="Frees block of pointers.">free_ptr</a>(void* p, unsigned size = <a class="code" href="a00106.html#40ad34d6c46a2fb20ba2baa7f95d80b4">bm::set_array_size</a>)

240

<a name="l00222"></a>00222 {

241

<a name="l00223"></a>00223 if (p)

242

<a name="l00224"></a>00224 ptr_alloc_.deallocate(p, size);

243

<a name="l00225"></a>00225 }

244

<a name="l00226"></a>00226 private:

245

<a name="l00227"></a>00227 BA block_alloc_;

246

<a name="l00228"></a>00228 PA ptr_alloc_;

247

<a name="l00229"></a>00229 };

248

<a name="l00230"></a>00230

249

<a name="l00231"></a><a class="code" href="a00117.html#gb9059bfb40a6588cdbacfd93901593c1">00231</a> typedef <a class="code" href="a00073.html" title="BM style allocator adapter.">mem_alloc<block_allocator, ptr_allocator></a> <a class="code" href="a00073.html" title="BM style allocator adapter.">standard_allocator</a>;

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<a name="l00232"></a>00232

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<a name="l00233"></a>00233 /** @} */

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<a name="l00234"></a>00234

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<a name="l00235"></a>00235

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<a name="l00236"></a>00236 } // namespace bm

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<a name="l00237"></a>00237

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<a name="l00238"></a>00238

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<a name="l00239"></a>00239 #endif

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</pre></div></div>

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