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#1886 added a unit test for volume calculation and the qhull library
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6<title>mem.c -- memory operations</title>
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11<p><a name="TOP"><b>Up:</b></a> <a
12href="http://www.qhull.org">Home page</a> for Qhull<br>
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31<hr>
32
33<h2>mem.c -- memory operations</h2>
34<blockquote>
35<p>Qhull uses quick-fit memory allocation. It maintains a
36set of free lists for a variety of small allocations. A
37small request returns a block from the best fitting free
38list. If the free list is empty, Qhull allocates a block
39from a reserved buffer. </p>
40<p>Use 'T5' to trace memory allocations.</p>
41
42</blockquote>
43<p><b>Copyright &copy; 1995-2012 C.B. Barber</b></p>
44<hr>
45<p><a href="#TOP">&#187;</a> <a href="qh-geom.htm#TOC">Geom</a>
46<a name="TOC">&#149;</a> <a href="qh-globa.htm#TOC">Global</a> &#149;
47<a href="qh-io.htm#TOC">Io</a> &#149; <b>Mem</b>
48&#149; <a href="qh-merge.htm#TOC">Merge</a> &#149; <a href="qh-poly.htm#TOC">Poly</a>
49&#149; <a href="qh-qhull.htm#TOC">Qhull</a> &#149; <a href="qh-set.htm#TOC">Set</a>
50&#149; <a href="qh-stat.htm#TOC">Stat</a> &#149; <a href="qh-user.htm#TOC">User</a>
51</p>
52<h3>Index to <a href="mem.c">mem.c</a> and
53<a href="mem.h">mem.h</a></h3>
54<ul>
55<li><a href="#etype">mem.h data types</a> </li>
56<li><a href="#emacro">mem.h macros</a> </li>
57<li><a href="#efunc">User level functions</a> </li>
58</ul>
59<h3><a href="qh-mem.htm#TOC">&#187;</a><a name="etype">mem.h data types and constants</a></h3>
60<ul>
61<li><a href="mem.h#ptr_intT">ptr_intT</a> for casting
62a void* to an integer-type </li>
63<li><a href="mem.h#qhmemT">qhmemT</a> global memory
64structure for mem.c </li>
65<li><a href="mem.h#NOmem">qh_NOmem</a> disable memory allocation</li>
66</ul>
67<h3><a href="qh-mem.htm#TOC">&#187;</a><a name="emacro">mem.h macros</a></h3>
68<ul>
69<li><a href="mem.h#memalloc_">qh_memalloc_</a>
70allocate memory</li>
71<li><a href="mem.h#memfree_">qh_memfree_</a> free
72memory</li>
73</ul>
74<h3><a href="qh-mem.htm#TOC">&#187;</a><a name="efunc">User level
75functions</a></h3>
76<ul>
77<li><a href="mem.c#memalloc">qh_memalloc</a> allocate
78memory </li>
79<li><a href="mem.c#memfree">qh_memfree</a> free
80memory </li>
81<li><a href="mem.c#meminit">qh_meminit</a> initialize
82memory </li>
83<li><a href="mem.c#memstatistics">qh_memstatistics</a>
84print memory statistics </li>
85<li><a href="mem.c#meminit">qh_memtotlong</a> return total, allocated long memory</li>
86<li><a href="mem.c#NOmem">qh_NOmem</a> allocation routines with malloc() and free()
87</ul>
88
89<h3><a href="qh-mem.htm#TOC">&#187;</a><a name="m">Initialization and
90termination functions</a></h3>
91<ul>
92<li><a href="mem.c#intcompare">qh_intcompare</a> used by
93qsort and bsearch to compare two integers </li>
94<li><a href="mem.c#memfreeshort">qh_memfreeshort</a>
95frees up all short and qhmem memory allocations </li>
96<li><a href="mem.c#meminit">qh_meminit</a> initialize
97memory </li>
98<li><a href="mem.c#meminitbuffers">qh_meminitbuffers</a>
99initialize qhmem </li>
100<li><a href="mem.c#memsetup">qh_memsetup</a> set up
101memory after running memsize() </li>
102<li><a href="mem.c#memsize">qh_memsize</a> define a free
103list for this size </li>
104<li><a href="mem.c#memstatistics">qh_memstatistics</a>
105print out memory statistics </li>
106</ul>
107
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109<hr>
110<p><b>Up:</b>
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131</p>
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133<hr>
134<p><a href="http://www.geom.uiuc.edu/"><img
135src="../../html/qh--geom.gif" align="middle" width="40" height="40"></a><i>The
136Geometry Center Home Page </i></p>
137<p>Comments to: <a href=mailto:qhull@qhull.org>qhull@qhull.org</a>
138</a><br>
139Created: May 2, 1997 --- <!-- hhmts start --> Last modified: see top <!-- hhmts end --> </p>
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