1
2
3
4
5<!doctype html>
6<html lang="en">
7<head>
8  <meta charset="utf-8"  />
9  <meta name="viewport" content="width=device-width, initial-scale=1"  />
10  <title>ImageMagick - MagickCore, C API: Monitor or Limit Resource Consumption</title>
11  <meta name="application-name" content="ImageMagick" />
12  <meta name="description" content="Use ImageMagick® to create, edit, compose, and convert digital images. Resize an image, crop it, change its shades and colors, add captions, and more." />
13  <meta name="application-url" content="https://imagemagick.org" />
14  <meta name="generator" content="PHP" />
15  <meta name="keywords" content="magickcore, c, api:, monitor, or, limit, resource, consumption, image processing software" />
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) 1999-2020 ImageMagick Studio LLC" />
23  <meta name="distribution" content="Global" />
24  <meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1" />
25  <meta property='og:url' content='../../' />
26  <meta property='og:title' content='ImageMagick' />
27  <meta property='og:image' content='../../../images/logo.png' />
28  <meta property='og:type' content='website' />
29  <meta property='og:site_name' content='ImageMagick' />
30  <meta property='og:description' content="Create, Edit, Compose, or Convert Digital Images" />
31  <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" />
32  <link href="resource.html" rel="canonical" />
33  <link href="../../../images/wand.png" rel="icon" />
34  <link href="../../../images/wand.ico" rel="shortcut icon" />
35  <link href="../../assets/magick.css" rel="stylesheet" />
36</head>
37<body>
38  <nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top">
39  <div class="container-fluid">
40    <a class="navbar-brand" href="../../"><img class="d-block" id="icon" alt="ImageMagick" width="32" height="32" src="../../../images/wand.ico"/></a>
41    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#magick-navbars" aria-controls="magick-navbars" aria-expanded="false" aria-label="Toggle navigation">
42      <span class="navbar-toggler-icon"></span>
43    </button>
44
45    <div class="collapse navbar-collapse" id="magick-navbars">
46      <ul class="navbar-nav me-auto mb-2 mb-md-0">
47        <li class="nav-item">
48          <a class="nav-link " href="../../www/index.html">Home</a>
49        </li>
50        <li class="nav-item">
51          <a class="nav-link " href="../../www/download.html">Download</a>
52        </li>
53        <li class="nav-item">
54          <a class="nav-link " href="../../www/command-line-tools.html">Tools</a>
55        </li>
56        <li class="nav-item">
57          <a class="nav-link " href="../../www/command-line-processing.html">CLI</a>
58        </li>
59        <li class="nav-item">
60          <a class="nav-link " href="../../www/develop.html">Develop</a>
61        </li>
62        <li class="nav-item">
63          <a class="nav-link" target="_blank" href="https://github.com/ImageMagick/ImageMagick/discussions">Community</a>
64        </li>
65        <li class="nav-item">
66          <iframe src="https://github.com/sponsors/ImageMagick/button" title="Sponsor ImageMagick" height="35" width="107" style="border: 0;"></iframe>
67        </li>
68      </ul>
69      <form class="d-flex form-inline" action="https://imagemagick.org/script/search.php">
70        <input class="form-control me-2" type="text" name="q" placeholder="Search" aria-label="Search">
71        <button class="btn btn-outline-success" type="submit" name="sa">Search</button>
72      </form>
73    </div>
74  </div>
75  </nav>
76
77  <div class="container">
78    <script async="async" src="https://localhost/pagead/js/adsbygoogle.js"></script>
79    <ins class="adsbygoogle"
80      style="display:block"
81      data-ad-client="ca-pub-3129977114552745"
82      data-ad-slot="6345125851"
83      data-full-width-responsive="true"
84      data-ad-format="horizontal"></ins>
85    <script>
86      (adsbygoogle = window.adsbygoogle || []).push({});
87    </script>
88
89  </div>
90
91  <main class="container">
92  <div class="magick-template">
93<div class="magick-header">
94<p class="text-center"><a href="resource.html#AcquireMagickResource">AcquireMagickResource</a> &#8226; <a href="resource.html#AcquireUniqueFileResource">AcquireUniqueFileResource</a> &#8226; <a href="resource.html#GetMagickResource">GetMagickResource</a> &#8226; <a href="resource.html#GetMagickResourceLimit">GetMagickResourceLimit</a> &#8226; <a href="resource.html#ListMagickResourceInfo">ListMagickResourceInfo</a> &#8226; <a href="resource.html#RelinquishMagickResource">RelinquishMagickResource</a> &#8226; <a href="resource.html#RelinquishUniqueFileResource">RelinquishUniqueFileResource</a> &#8226; <a href="resource.html#SetMagickResourceLimit">SetMagickResourceLimit</a></p>
95
96<h2><a href="../../api/MagickCore/resource_8c.html" id="AcquireMagickResource">AcquireMagickResource</a></h2>
97
98<p>AcquireMagickResource() acquires resources of the specified type. MagickFalse is returned if the specified resource is exhausted otherwise MagickTrue.</p>
99
100<p>The format of the AcquireMagickResource() method is:</p>
101
102<pre class="text">
103MagickBooleanType AcquireMagickResource(const ResourceType type,
104  const MagickSizeType size)
105</pre>
106
107<p>A description of each parameter follows:</p>
108
109<dd>
110</dd>
111
112<dd> </dd>
113<dl class="dl-horizontal">
114<dt>type</dt>
115<dd>the type of resource. </dd>
116
117<dd> </dd>
118<dt>size</dt>
119<dd>the number of bytes needed from for this resource. </dd>
120
121<dd>  </dd>
122</dl>
123<h2><a href="../../api/MagickCore/resource_8c.html" id="AcquireUniqueFileResource">AcquireUniqueFileResource</a></h2>
124
125<p>AcquireUniqueFileResource() returns a unique file name, and returns a file descriptor for the file open for reading and writing.</p>
126
127<p>The format of the AcquireUniqueFileResource() method is:</p>
128
129<pre class="text">
130int AcquireUniqueFileResource(char *path)
131</pre>
132
133<p>A description of each parameter follows:</p>
134
135<dd>
136</dd>
137
138<dd> </dd>
139<dl class="dl-horizontal">
140<dt> path</dt>
141<dd> Specifies a pointer to an array of characters.  The unique path name is returned in this array. </dd>
142
143<dd>  </dd>
144</dl>
145<h2><a href="../../api/MagickCore/resource_8c.html" id="GetMagickResource">GetMagickResource</a></h2>
146
147<p>GetMagickResource() returns the specified resource.</p>
148
149<p>The format of the GetMagickResource() method is:</p>
150
151<pre class="text">
152MagickSizeType GetMagickResource(const ResourceType type)
153</pre>
154
155<p>A description of each parameter follows:</p>
156
157<dd>
158</dd>
159
160<dd> </dd>
161<dl class="dl-horizontal">
162<dt>type</dt>
163<dd>the type of resource. </dd>
164
165<dd>  </dd>
166</dl>
167<h2><a href="../../api/MagickCore/resource_8c.html" id="GetMagickResourceLimit">GetMagickResourceLimit</a></h2>
168
169<p>GetMagickResourceLimit() returns the specified resource limit.</p>
170
171<p>The format of the GetMagickResourceLimit() method is:</p>
172
173<pre class="text">
174MagickSizeType GetMagickResourceLimit(const ResourceType type)
175</pre>
176
177<p>A description of each parameter follows:</p>
178
179<dd>
180</dd>
181
182<dd> </dd>
183<dl class="dl-horizontal">
184<dt>type</dt>
185<dd>the type of resource. </dd>
186
187<dd>  </dd>
188</dl>
189<h2><a href="../../api/MagickCore/resource_8c.html" id="ListMagickResourceInfo">ListMagickResourceInfo</a></h2>
190
191<p>ListMagickResourceInfo() lists the resource info to a file.</p>
192
193<p>The format of the ListMagickResourceInfo method is:</p>
194
195<pre class="text">
196MagickBooleanType ListMagickResourceInfo(FILE *file,
197  ExceptionInfo *exception)
198</pre>
199
200<p>A description of each parameter follows.</p>
201
202<dt>file</dt>
203<p>An pointer to a FILE.</p>
204
205<dt>exception</dt>
206<p>return any errors or warnings in this structure.</p>
207
208<h2><a href="../../api/MagickCore/resource_8c.html" id="RelinquishMagickResource">RelinquishMagickResource</a></h2>
209
210<p>RelinquishMagickResource() relinquishes resources of the specified type.</p>
211
212<p>The format of the RelinquishMagickResource() method is:</p>
213
214<pre class="text">
215void RelinquishMagickResource(const ResourceType type,
216  const MagickSizeType size)
217</pre>
218
219<p>A description of each parameter follows:</p>
220
221<dd>
222</dd>
223
224<dd> </dd>
225<dl class="dl-horizontal">
226<dt>type</dt>
227<dd>the type of resource. </dd>
228
229<dd> </dd>
230<dt>size</dt>
231<dd>the size of the resource. </dd>
232
233<dd>  </dd>
234</dl>
235<h2><a href="../../api/MagickCore/resource_8c.html" id="RelinquishUniqueFileResource">RelinquishUniqueFileResource</a></h2>
236
237<p>RelinquishUniqueFileResource() relinquishes a unique file resource.</p>
238
239<p>The format of the RelinquishUniqueFileResource() method is:</p>
240
241<pre class="text">
242MagickBooleanType RelinquishUniqueFileResource(const char *path)
243</pre>
244
245<p>A description of each parameter follows:</p>
246
247<dd>
248</dd>
249
250<dd> </dd>
251<dl class="dl-horizontal">
252<dt>name</dt>
253<dd>the name of the temporary resource. </dd>
254
255<dd>  </dd>
256</dl>
257<h2><a href="../../api/MagickCore/resource_8c.html" id="SetMagickResourceLimit">SetMagickResourceLimit</a></h2>
258
259<p>SetMagickResourceLimit() sets the limit for a particular resource.</p>
260
261<p>The format of the SetMagickResourceLimit() method is:</p>
262
263<pre class="text">
264MagickBooleanType SetMagickResourceLimit(const ResourceType type,
265  const MagickSizeType limit)
266</pre>
267
268<p>A description of each parameter follows:</p>
269
270<dd>
271</dd>
272
273<dd> </dd>
274<dl class="dl-horizontal">
275<dt>type</dt>
276<dd>the type of resource. </dd>
277
278<dd> </dd>
279<dt>limit</dt>
280<dd>the maximum limit for the resource. </dd>
281
282<dd>  </dd>
283</dl>
284</div>
285  </div>
286  </main><!-- /.container -->
287  <footer class="magick-footer">
288    <div class="container-fluid">
289      <a href="../../www/security-policy.html">Security</a> •
290      <a href="../../www/news.html">News</a>
291
292      <a href="resource.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../../images/wand.ico"/></a>
293
294      <a href="../../www/links.html">Related</a> •
295      <a href="../../www/sitemap.html">Sitemap</a>
296   <br/>
297     <a href="../../www/support.html">Sponsor</a> •
298     <a href="../../www/cite.html">Cite</a> •
299     <a href="http://pgp.mit.edu/pks/lookup?op=get&amp;search=0x89AB63D48277377A">Public Key</a> •
300     <a href="../../www/contact.html">Contact Us</a>
301   <br/>
302     <a href="https://github.com/imagemagick/imagemagick" target="_blank" rel="noopener" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 499.36" width="2%" height="2%" role="img" focusable="false"><title>GitHub</title><path fill="currentColor" fill-rule="evenodd" d="M256 0C114.64 0 0 114.61 0 256c0 113.09 73.34 209 175.08 242.9 12.8 2.35 17.47-5.56 17.47-12.34 0-6.08-.22-22.18-.35-43.54-71.2 15.49-86.2-34.34-86.2-34.34-11.64-29.57-28.42-37.45-28.42-37.45-23.27-15.84 1.73-15.55 1.73-15.55 25.69 1.81 39.21 26.38 39.21 26.38 22.84 39.12 59.92 27.82 74.5 21.27 2.33-16.54 8.94-27.82 16.25-34.22-56.84-6.43-116.6-28.43-116.6-126.49 0-27.95 10-50.8 26.35-68.69-2.63-6.48-11.42-32.5 2.51-67.75 0 0 21.49-6.88 70.4 26.24a242.65 242.65 0 0 1 128.18 0c48.87-33.13 70.33-26.24 70.33-26.24 14 35.25 5.18 61.27 2.55 67.75 16.41 17.9 26.31 40.75 26.31 68.69 0 98.35-59.85 120-116.88 126.32 9.19 7.9 17.38 23.53 17.38 47.41 0 34.22-.31 61.83-.31 70.23 0 6.85 4.61 14.81 17.6 12.31C438.72 464.97 512 369.08 512 256.02 512 114.62 397.37 0 256 0z"/></svg></a> •
303     <a href="https://twitter.com/imagemagick" target="_blank" rel="noopener" aria-label="Twitter"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 416.32" width="2%" height="2%" role="img" focusable="false"><title>Twitter</title><path fill="currentColor" d="M160.83 416.32c193.2 0 298.92-160.22 298.92-298.92 0-4.51 0-9-.2-13.52A214 214 0 0 0 512 49.38a212.93 212.93 0 0 1-60.44 16.6 105.7 105.7 0 0 0 46.3-58.19 209 209 0 0 1-66.79 25.37 105.09 105.09 0 0 0-181.73 71.91 116.12 116.12 0 0 0 2.66 24c-87.28-4.3-164.73-46.3-216.56-109.82A105.48 105.48 0 0 0 68 159.6a106.27 106.27 0 0 1-47.53-13.11v1.43a105.28 105.28 0 0 0 84.21 103.06 105.67 105.67 0 0 1-47.33 1.84 105.06 105.06 0 0 0 98.14 72.94A210.72 210.72 0 0 1 25 370.84a202.17 202.17 0 0 1-25-1.43 298.85 298.85 0 0 0 160.83 46.92"/></svg></a>
304    <br/>
305    <small>© 1999-2021 ImageMagick Studio LLC</small>
306    </div>
307  </footer>
308
309  <!-- Javascript assets -->
310  <script src="../../assets/magick.js" ></script>
311  </body>
312</html>
313