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<section id="tiffmemory">
<h1>TIFFmemory<a class="headerlink" href="#tiffmemory" title="Permalink to this heading">¶</a></h1>
<section id="synopsis">
<h2>Synopsis<a class="headerlink" href="#synopsis" title="Permalink to this heading">¶</a></h2>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><tiffio.h></span>
</pre></div>
</div>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFmalloc">
<span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFmalloc</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">tsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">size</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFmalloc" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFrealloc">
<span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFrealloc</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="n"><span class="pre">buffer</span></span>, <span class="n"><span class="pre">tsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">size</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFrealloc" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFfree">
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFfree</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="n"><span class="pre">buffer</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFfree" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFmemset">
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFmemset</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="n"><span class="pre">s</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">c</span></span>, <span class="n"><span class="pre">tsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">n</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFmemset" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFmemcpy">
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFmemcpy</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="n"><span class="pre">dest</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="n"><span class="pre">src</span></span>, <span class="n"><span class="pre">tsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">n</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFmemcpy" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFmemcmp">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFmemcmp</span></span></span><span class="sig-paren">(</span><span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="n"><span class="pre">tdata_t</span></span><span class="w"> </span><span class="n"><span class="pre">s1</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="n"><span class="pre">tdata_ts2</span></span>, <span class="n"><span class="pre">tsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">n</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFmemcmp" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFCheckMalloc">
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFCheckMalloc</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">TIFF</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">tif</span></span>, <span class="n"><span class="pre">tmsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">nmemb</span></span>, <span class="n"><span class="pre">tmsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">elem_size</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">what</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFCheckMalloc" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c._TIFFCheckRealloc">
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">_TIFFCheckRealloc</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">TIFF</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">tif</span></span>, <span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">buffer</span></span>, <span class="n"><span class="pre">tmsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">nmemb</span></span>, <span class="n"><span class="pre">tmsize_t</span></span><span class="w"> </span><span class="n"><span class="pre">elem_size</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">what</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._TIFFCheckRealloc" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
</section>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Permalink to this heading">¶</a></h2>
<p>These routines are provided for writing portable software that uses
<strong class="program">libtiff</strong>; they hide any memory-management related issues, such as
dealing with segmented architectures found on 16-bit machines.</p>
<p><a class="reference internal" href="#c._TIFFmalloc" title="_TIFFmalloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmalloc()</span></code></a> and <a class="reference internal" href="#c._TIFFrealloc" title="_TIFFrealloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFrealloc()</span></code></a> are used to dynamically
allocate and reallocate memory used by <strong class="program">libtiff</strong>; such as memory
passed into the I/O routines. Memory allocated through these interfaces is
released back to the system using the <a class="reference internal" href="#c._TIFFfree" title="_TIFFfree"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFfree()</span></code></a> routine.</p>
<p>Memory allocated through one of the above interfaces can be set to a known
value using <a class="reference internal" href="#c._TIFFmemset" title="_TIFFmemset"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmemset()</span></code></a>, copied to another memory location using
<a class="reference internal" href="#c._TIFFmemcpy" title="_TIFFmemcpy"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmemcpy()</span></code></a>, or compared for equality using <a class="reference internal" href="#c._TIFFmemcmp" title="_TIFFmemcmp"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmemcmp()</span></code></a>.
These routines conform to the equivalent C routines:
<code class="xref c c-func docutils literal notranslate"><span class="pre">memset()</span></code>, <code class="xref c c-func docutils literal notranslate"><span class="pre">memcpy()</span></code>, <code class="xref c c-func docutils literal notranslate"><span class="pre">memcmp()</span></code>, respectively.</p>
<p><a class="reference internal" href="#c._TIFFCheckMalloc" title="_TIFFCheckMalloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFCheckMalloc()</span></code></a> and <a class="reference internal" href="#c._TIFFCheckRealloc" title="_TIFFCheckRealloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFCheckRealloc()</span></code></a> are checking for
integer overflow before calling <a class="reference internal" href="#c._TIFFmalloc" title="_TIFFmalloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFmalloc()</span></code></a> and <a class="reference internal" href="#c._TIFFrealloc" title="_TIFFrealloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">_TIFFrealloc()</span></code></a>,
respectively.</p>
</section>
<section id="diagnostics">
<h2>Diagnostics<a class="headerlink" href="#diagnostics" title="Permalink to this heading">¶</a></h2>
<p>None.</p>
</section>
<section id="see-also">
<h2>See also<a class="headerlink" href="#see-also" title="Permalink to this heading">¶</a></h2>
<p>malloc (3),
memory (3),
<a class="reference internal" href="libtiff.html"><span class="doc">libtiff</span></a> (3tiff)</p>
</section>
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<h3><a href="../index.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">TIFFmemory</a><ul>
<li><a class="reference internal" href="#synopsis">Synopsis</a></li>
<li><a class="reference internal" href="#description">Description</a></li>
<li><a class="reference internal" href="#diagnostics">Diagnostics</a></li>
<li><a class="reference internal" href="#see-also">See also</a></li>
</ul>
</li>
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