1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
\r
2 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
\r
3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr">
\r
5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
\r
6 <meta name="verify-v1" content="g222frIIxcQTrvDR3NBRUSKP3AnMNoqxOkIniCEkV7U="/>
\r
7 <title>ImageMagick: MagickCore, C API for ImageMagick: Memory Allocation</title/>
8 <meta http-equiv="Content-Language" content="en-US"/>
9 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
10 <meta http-equiv="Reply-to" content="magick-users@imagemagick.org"/>
11 <meta name="Application-name" content="ImageMagick"/>
12 <meta name="Description" content="ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves. ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you can freely use, copy, modify, and distribute. Its license is compatible with the GPL. It runs on all major operating systems. The functionality of ImageMagick is typically utilized from the command line or you can use the features from programs written in your favorite programming language. Choose from these interfaces: MagickCore (C), MagickWand (C), ChMagick (Ch), Magick++ (C++), JMagick (Java), L-Magick (Lisp), PascalMagick (Pascal), PerlMagick (Perl), MagickWand for PHP (PHP), PythonMagick (Python), RMagick (Ruby), or TclMagick (Tcl/TK). With a language interface, use ImageMagick to modify or create images automagically and dynamically."/>
13 <meta name="Application-url" content="http://www.imagemagick.org"/>
14 <meta name="Generator" content="PHP"/>
15 <meta name="Keywords" content="magickcore, c, api, for, imagemagick:, memory, allocation, ImageMagick, ImageMagic, MagickCore, MagickWand, PerlMagick, Magick++, RMagick, PythonMagick, JMagick, TclMagick, Image, Magick, Magic, Wand, ImageMagickObject, Swiss, Army, Knife, Image, Processing"/>
16 <meta name="Rating" content="GENERAL"/>
17 <meta name="Robots" content="INDEX, FOLLOW"/>
18 <meta name="Generator" content="ImageMagick Studio LLC"/>
19 <meta name="Author" content="ImageMagick Studio LLC"/>
20 <meta name="Revisit-after" content="2 DAYS"/>
21 <meta name="Resource-type" content="document"/>
22 <meta name="Copyright" content="Copyright (c) 1999-2010 ImageMagick Studio LLC"/>
23 <meta name="Distribution" content="Global"/>
24 <link rel="icon" href="../../images/wand.png" sizes="32x32"/>
25 <link rel="shortcut icon" href="../../images/wand.ico" type="images/x-icon"/>
26 <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"/>
\r
27 <style type="text/css" media="all">
\r
28 @import url("../../www/magick.css");
\r
32 <body id="www-imagemagick-org">
\r
33 <div class="titlebar">
\r
34 <a href="../../index.html">
\r
35 <img src="../../images/script.png" alt="[ImageMagick]"
\r
36 style="width: 350px; height: 60px; margin: 28px auto; float: left;" /></a>
\r
37 <a href="http://www.networkredux.com">
\r
38 <img src="../../images/networkredux.png" alt="[sponsor]"
\r
39 style="margin: 45px auto; border: 0px; float: left;" /></a>
\r
40 <a href="http://www.imagemagick.org/discourse-server/">
\r
41 <img src="../../images/logo.jpg" alt=""
\r
42 style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
\r
43 <a href="../../index.html">
\r
44 <img src="../../images/sprite.jpg" alt=""
\r
45 style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
\r
48 <div class="westbar">
\r
51 <a title="About ImageMagick" href="../../index.html">About ImageMagick</a>
53 <div class="sep"></div>
\r
55 <a title="Binary Releases" href="../../www/binary-releases.html">Binary Releases</a>
58 <a title="Binary Release: Unix" href="../../www/binary-releases.html#unix">Unix</a>
61 <a title="Binary Release: MacOS X" href="../../www/binary-releases.html#macosx">Mac OS X</a>
64 <a title="Binary Release: Windows" href="../../www/binary-releases.html#windows">Windows</a>
66 <div class="sep"></div>
\r
68 <a title="Command-line Tools" href="../../www/command-line-tools.html">Command-line Tools</a>
71 <a title="Command-line Tools: Processing" href="../../www/command-line-processing.html">Processing</a>
74 <a title="Command-line Tools: Options" href="../../www/command-line-options.html">Options</a>
77 <a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a>
80 <a title="Program Interfaces" href="../../www/api.html">Program Interfaces</a>
83 <a title="Program Interface: MagickWand" href="../../www/magick-wand.html">MagickWand</a>
86 <a title="Program Interface: MagickCore" href="../../www/magick-core.html">MagickCore</a>
89 <a title="Program Interface: PerlMagick" href="../../www/perl-magick.html">PerlMagick</a>
92 <a title="Program Interface: Magick++" href="../../Magick++/">Magick++</a>
94 <div class="sep"></div>
\r
96 <a title="Install from Source" href="../../www/install-source.html">Install from Source</a>
99 <a title="Install from Source: Unix" href="../../www/install-source.html#unix">Unix</a>
102 <a title="Install from Source: Windows" href="../../www/install-source.html#windows">Windows</a>
105 <a title="Resources" href="../../www/resources.html">Resources</a>
108 <a title="Architecture" href="../../www/architecture.html">Architecture</a>
111 <a title="Download" href="../../www/download.html">Download</a>
113 <div class="sep"></div>
\r
115 <a title="Search" href="../http://www.imagemagick.org/script/search.php">Search</a>
117 <div class="sep"></div>
\r
119 <a title="Site Map"href="../../www/sitemap.html">Site Map</a>
122 <a title="Site Map: Links"href="../../www/links.html">Links</a>
124 <div class="sep"></div>
\r
126 <a title="Sponsors" href="../../www/sponsors.html">Sponsors:</a>
128 <div class="sponsbox">
129 <div class="sponsor">
130 <a title="Sponsor: Flyer drucken" href="http://www.online-druck.biz">Flyer drucken</a><!-- 201109010900 Floeter-->
132 <div class="sponsor">
133 <a title="Sponsor: Webdesign Agentur" href="http://www.ventzke-partner.de">Webdesign Agentur</a><!-- 201101010480 invendio.de-->
135 <div class="sponsor">
136 <a title="Sponsor: LVM Versicherung" href="http://www.neu-reich.de">LVM Versicherung</a><!-- 201101010480 -->
138 <div class="sponsor">
139 <a title="Sponsor: Deko.net" href="http://www.deko.net">Deko.net</a><!-- 201101010600 Peterssen-->
141 <div class="sponsor">
142 <a title="Sponsor: Druckerei" href="http://www.print24.de/">Druckerei</a><!-- 201009010720 -->
144 <div class="sponsor">
145 <a title="Sponsor: Druckerei Online" href="http://www.allesdruck.de">Druckerei Online</a><!-- 201012011200 allesdruck.de-->
147 <div class="sponsor">
148 <a title="Sponsor: Webdesign" href="http://www.renehornig.com/">Webdesign</a><!-- 20111001000240 -->
154 <div class="eastbar">
\r
155 <script type="text/javascript">
\r
157 google_ad_client = "pub-3129977114552745";
\r
158 google_ad_slot = "0574824969";
\r
159 google_ad_width = 160;
\r
160 google_ad_height = 600;
\r
163 <script type="text/javascript"
\r
164 src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
\r
170 <p class="navigation-index">[<a href="#AcquireAlignedMemory">AcquireAlignedMemory</a> • <a href="#AcquireMagickMemory">AcquireMagickMemory</a> • <a href="#AcquireQuantumMemory">AcquireQuantumMemory</a> • <a href="#CopyMagickMemory">CopyMagickMemory</a> • <a href="#GetMagickMemoryMethods">GetMagickMemoryMethods</a> • <a href="#RelinquishAlignedMemory">RelinquishAlignedMemory</a> • <a href="#RelinquishMagickMemory">RelinquishMagickMemory</a> • <a href="#ResetMagickMemory">ResetMagickMemory</a> • <a href="#ResizeMagickMemory">ResizeMagickMemory</a> • <a href="#ResizeQuantumMemory">ResizeQuantumMemory</a> • <a href="#SetMagickMemoryMethods">SetMagickMemoryMethods</a>]</p>
172 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
173 _8c.html" target="source" name="AcquireAlignedMemory">AcquireAlignedMemory</a></h2>
174 <div class="doc-section">
176 <p>AcquireAlignedMemory() returns a pointer to a block of memory at least size bytes whose address is a multiple of 16*sizeof(void *).</p></ol>
178 <p>The format of the AcquireAlignedMemory method is:</p>
181 void *AcquireAlignedMemory(const size_t count,const size_t quantum)
184 <p>A description of each parameter follows:</p></ol>
187 <ol><p>the number of quantum elements to allocate.</p></ol>
190 <ol><p>the number of bytes in each quantum.</p></ol>
193 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
194 _8c.html" target="source" name="AcquireMagickMemory">AcquireMagickMemory</a></h2>
195 <div class="doc-section">
197 <p>AcquireMagickMemory() returns a pointer to a block of memory at least size bytes suitably aligned for any use.</p></ol>
199 <p>The format of the AcquireMagickMemory method is:</p>
202 void *AcquireMagickMemory(const size_t size)
205 <p>A description of each parameter follows:</p></ol>
208 <ol><p>the size of the memory in bytes to allocate.</p></ol>
211 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
212 _8c.html" target="source" name="AcquireQuantumMemory">AcquireQuantumMemory</a></h2>
213 <div class="doc-section">
215 <p>AcquireQuantumMemory() returns a pointer to a block of memory at least count * quantum bytes suitably aligned for any use.</p></ol>
217 <p>The format of the AcquireQuantumMemory method is:</p>
220 void *AcquireQuantumMemory(const size_t count,const size_t quantum)
223 <p>A description of each parameter follows:</p></ol>
226 <ol><p>the number of quantum elements to allocate.</p></ol>
229 <ol><p>the number of bytes in each quantum.</p></ol>
232 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
233 _8c.html" target="source" name="CopyMagickMemory">CopyMagickMemory</a></h2>
234 <div class="doc-section">
236 <p>CopyMagickMemory() copies size bytes from memory area source to the destination. Copying between objects that overlap will take place correctly. It returns destination.</p></ol>
238 <p>The format of the CopyMagickMemory method is:</p>
241 void *CopyMagickMemory(void *destination,const void *source,
245 <p>A description of each parameter follows:</p></ol>
248 <ol><p>the destination.</p></ol>
251 <ol><p>the source.</p></ol>
254 <ol><p>the size of the memory in bytes to allocate.</p></ol>
257 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
258 _8c.html" target="source" name="GetMagickMemoryMethods">GetMagickMemoryMethods</a></h2>
259 <div class="doc-section">
261 <p>GetMagickMemoryMethods() gets the methods to acquire, resize, and destroy memory.</p></ol>
263 <p>The format of the GetMagickMemoryMethods() method is:</p>
266 void GetMagickMemoryMethods(AcquireMemoryHandler *acquire_memory_handler,
267 ResizeMemoryHandler *resize_memory_handler,
268 DestroyMemoryHandler *destroy_memory_handler)
271 <p>A description of each parameter follows:</p></ol>
273 <h5>acquire_memory_handler</h5>
274 <ol><p>method to acquire memory (e.g. malloc).</p></ol>
276 <h5>resize_memory_handler</h5>
277 <ol><p>method to resize memory (e.g. realloc).</p></ol>
279 <h5>destroy_memory_handler</h5>
280 <ol><p>method to destroy memory (e.g. free).</p></ol>
283 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
284 _8c.html" target="source" name="RelinquishAlignedMemory">RelinquishAlignedMemory</a></h2>
285 <div class="doc-section">
287 <p>RelinquishAlignedMemory() frees memory acquired with AcquireAlignedMemory() or reuse.</p></ol>
289 <p>The format of the RelinquishAlignedMemory method is:</p>
292 void *RelinquishAlignedMemory(void *memory)
295 <p>A description of each parameter follows:</p></ol>
298 <ol><p>A pointer to a block of memory to free for reuse.</p></ol>
301 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
302 _8c.html" target="source" name="RelinquishMagickMemory">RelinquishMagickMemory</a></h2>
303 <div class="doc-section">
305 <p>RelinquishMagickMemory() frees memory acquired with AcquireMagickMemory() or AcquireQuantumMemory() for reuse.</p></ol>
307 <p>The format of the RelinquishMagickMemory method is:</p>
310 void *RelinquishMagickMemory(void *memory)
313 <p>A description of each parameter follows:</p></ol>
316 <ol><p>A pointer to a block of memory to free for reuse.</p></ol>
319 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
320 _8c.html" target="source" name="ResetMagickMemory">ResetMagickMemory</a></h2>
321 <div class="doc-section">
323 <p>ResetMagickMemory() fills the first size bytes of the memory area pointed to by memory with the constant byte c.</p></ol>
325 <p>The format of the ResetMagickMemory method is:</p>
328 void *ResetMagickMemory(void *memory,int byte,const size_t size)
331 <p>A description of each parameter follows:</p></ol>
334 <ol><p>A pointer to a memory allocation.</p></ol>
337 <ol><p>Set the memory to this value.</p></ol>
340 <ol><p>Size of the memory to reset.</p></ol>
343 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
344 _8c.html" target="source" name="ResizeMagickMemory">ResizeMagickMemory</a></h2>
345 <div class="doc-section">
347 <p>ResizeMagickMemory() changes the size of the memory and returns a pointer to the (possibly moved) block. The contents will be unchanged up to the lesser of the new and old sizes.</p></ol>
349 <p>The format of the ResizeMagickMemory method is:</p>
352 void *ResizeMagickMemory(void *memory,const size_t size)
355 <p>A description of each parameter follows:</p></ol>
358 <ol><p>A pointer to a memory allocation.</p></ol>
361 <ol><p>the new size of the allocated memory.</p></ol>
364 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
365 _8c.html" target="source" name="ResizeQuantumMemory">ResizeQuantumMemory</a></h2>
366 <div class="doc-section">
368 <p>ResizeQuantumMemory() changes the size of the memory and returns a pointer to the (possibly moved) block. The contents will be unchanged up to the lesser of the new and old sizes.</p></ol>
370 <p>The format of the ResizeQuantumMemory method is:</p>
373 void *ResizeQuantumMemory(void *memory,const size_t count,
374 const size_t quantum)
377 <p>A description of each parameter follows:</p></ol>
380 <ol><p>A pointer to a memory allocation.</p></ol>
383 <ol><p>the number of quantum elements to allocate.</p></ol>
386 <ol><p>the number of bytes in each quantum.</p></ol>
389 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory
390 _8c.html" target="source" name="SetMagickMemoryMethods">SetMagickMemoryMethods</a></h2>
391 <div class="doc-section">
393 <p>SetMagickMemoryMethods() sets the methods to acquire, resize, and destroy memory.</p></ol>
395 <p>The format of the SetMagickMemoryMethods() method is:</p>
398 SetMagickMemoryMethods(AcquireMemoryHandler acquire_memory_handler,
399 ResizeMemoryHandler resize_memory_handler,
400 DestroyMemoryHandler destroy_memory_handler)
403 <p>A description of each parameter follows:</p></ol>
405 <h5>acquire_memory_handler</h5>
406 <ol><p>method to acquire memory (e.g. malloc).</p></ol>
408 <h5>resize_memory_handler</h5>
409 <ol><p>method to resize memory (e.g. realloc).</p></ol>
411 <h5>destroy_memory_handler</h5>
412 <ol><p>method to destroy memory (e.g. free).</p></ol>
419 <span id="linkbar-west"> </span>
\r
420 <span id="linkbar-center">
\r
421 <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> •
\r
422 <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a>
\r
424 <span id="linkbar-east"> </span>
\r
426 <div class="footer">
\r
427 <span id="footer-west">© 1999-2010 ImageMagick Studio LLC</span>
\r
428 <span id="footer-east"> <a href="../http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>
\r
430 <div style="clear: both; margin: 0; width: 100%; "></div>
\r
431 <script type="text/javascript">
\r
432 var _gaq = _gaq || [];
\r
433 _gaq.push(['_setAccount', 'UA-17690367-1']);
\r
434 _gaq.push(['_trackPageview']);
\r
437 var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
\r
438 ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
\r
439 var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
\r