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| |
| <h1>Module memory Methods</h1> |
| <p class="navigation-index">[<a href="memory.php#AcquireAlignedMemory">AcquireAlignedMemory</a> • <a href="memory.php#AcquireMagickMemory">AcquireMagickMemory</a> • <a href="memory.php#AcquireQuantumMemory">AcquireQuantumMemory</a> • <a href="memory.php#CopyMagickMemory">CopyMagickMemory</a> • <a href="memory.php#GetMagickMemoryMethods">GetMagickMemoryMethods</a> • <a href="memory.php#RelinquishAlignedMemory">RelinquishAlignedMemory</a> • <a href="memory.php#RelinquishMagickMemory">RelinquishMagickMemory</a> • <a href="memory.php#ResetMagickMemory">ResetMagickMemory</a> • <a href="memory.php#ResizeMagickMemory">ResizeMagickMemory</a> • <a href="memory.php#ResizeQuantumMemory">ResizeQuantumMemory</a> • <a href="memory.php#SetMagickMemoryMethods">SetMagickMemoryMethods</a>]</p> |
| |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireAlignedMemory">AcquireAlignedMemory</a></h2> |
| <div class="doc-section"> |
| |
| <p>AcquireAlignedMemory() returns a pointer to a block of memory at least size bytes whose address is a multiple of 16*sizeof(void *).</p> |
| |
| <p>The format of the AcquireAlignedMemory method is:</p> |
| |
| <pre class="code"> |
| void *AcquireAlignedMemory(const size_t count,const size_t quantum) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>count</h5> |
| <p>the number of quantum elements to allocate.</p> |
| |
| <h5>quantum</h5> |
| <p>the number of bytes in each quantum.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireMagickMemory">AcquireMagickMemory</a></h2> |
| <div class="doc-section"> |
| |
| <p>AcquireMagickMemory() returns a pointer to a block of memory at least size bytes suitably aligned for any use.</p> |
| |
| <p>The format of the AcquireMagickMemory method is:</p> |
| |
| <pre class="code"> |
| void *AcquireMagickMemory(const size_t size) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>size</h5> |
| <p>the size of the memory in bytes to allocate.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireQuantumMemory">AcquireQuantumMemory</a></h2> |
| <div class="doc-section"> |
| |
| <p>AcquireQuantumMemory() returns a pointer to a block of memory at least count * quantum bytes suitably aligned for any use.</p> |
| |
| <p>The format of the AcquireQuantumMemory method is:</p> |
| |
| <pre class="code"> |
| void *AcquireQuantumMemory(const size_t count,const size_t quantum) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>count</h5> |
| <p>the number of quantum elements to allocate.</p> |
| |
| <h5>quantum</h5> |
| <p>the number of bytes in each quantum.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="CopyMagickMemory">CopyMagickMemory</a></h2> |
| <div class="doc-section"> |
| |
| <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> |
| |
| <p>The format of the CopyMagickMemory method is:</p> |
| |
| <pre class="code"> |
| void *CopyMagickMemory(void *destination,const void *source, |
| const size_t size) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>destination</h5> |
| <p>the destination.</p> |
| |
| <h5>source</h5> |
| <p>the source.</p> |
| |
| <h5>size</h5> |
| <p>the size of the memory in bytes to allocate.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="GetMagickMemoryMethods">GetMagickMemoryMethods</a></h2> |
| <div class="doc-section"> |
| |
| <p>GetMagickMemoryMethods() gets the methods to acquire, resize, and destroy memory.</p> |
| |
| <p>The format of the GetMagickMemoryMethods() method is:</p> |
| |
| <pre class="code"> |
| void GetMagickMemoryMethods(AcquireMemoryHandler *acquire_memory_handler, |
| ResizeMemoryHandler *resize_memory_handler, |
| DestroyMemoryHandler *destroy_memory_handler) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>acquire_memory_handler</h5> |
| <p>method to acquire memory (e.g. malloc).</p> |
| |
| <h5>resize_memory_handler</h5> |
| <p>method to resize memory (e.g. realloc).</p> |
| |
| <h5>destroy_memory_handler</h5> |
| <p>method to destroy memory (e.g. free).</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishAlignedMemory">RelinquishAlignedMemory</a></h2> |
| <div class="doc-section"> |
| |
| <p>RelinquishAlignedMemory() frees memory acquired with AcquireAlignedMemory() or reuse.</p> |
| |
| <p>The format of the RelinquishAlignedMemory method is:</p> |
| |
| <pre class="code"> |
| void *RelinquishAlignedMemory(void *memory) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>memory</h5> |
| <p>A pointer to a block of memory to free for reuse.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishMagickMemory">RelinquishMagickMemory</a></h2> |
| <div class="doc-section"> |
| |
| <p>RelinquishMagickMemory() frees memory acquired with AcquireMagickMemory() or AcquireQuantumMemory() for reuse.</p> |
| |
| <p>The format of the RelinquishMagickMemory method is:</p> |
| |
| <pre class="code"> |
| void *RelinquishMagickMemory(void *memory) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>memory</h5> |
| <p>A pointer to a block of memory to free for reuse.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResetMagickMemory">ResetMagickMemory</a></h2> |
| <div class="doc-section"> |
| |
| <p>ResetMagickMemory() fills the first size bytes of the memory area pointed to by memory with the constant byte c.</p> |
| |
| <p>The format of the ResetMagickMemory method is:</p> |
| |
| <pre class="code"> |
| void *ResetMagickMemory(void *memory,int byte,const size_t size) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>memory</h5> |
| <p>A pointer to a memory allocation.</p> |
| |
| <h5>byte</h5> |
| <p>Set the memory to this value.</p> |
| |
| <h5>size</h5> |
| <p>Size of the memory to reset.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeMagickMemory">ResizeMagickMemory</a></h2> |
| <div class="doc-section"> |
| |
| <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> |
| |
| <p>The format of the ResizeMagickMemory method is:</p> |
| |
| <pre class="code"> |
| void *ResizeMagickMemory(void *memory,const size_t size) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>memory</h5> |
| <p>A pointer to a memory allocation.</p> |
| |
| <h5>size</h5> |
| <p>the new size of the allocated memory.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeQuantumMemory">ResizeQuantumMemory</a></h2> |
| <div class="doc-section"> |
| |
| <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> |
| |
| <p>The format of the ResizeQuantumMemory method is:</p> |
| |
| <pre class="code"> |
| void *ResizeQuantumMemory(void *memory,const size_t count, |
| const size_t quantum) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>memory</h5> |
| <p>A pointer to a memory allocation.</p> |
| |
| <h5>count</h5> |
| <p>the number of quantum elements to allocate.</p> |
| |
| <h5>quantum</h5> |
| <p>the number of bytes in each quantum.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="SetMagickMemoryMethods">SetMagickMemoryMethods</a></h2> |
| <div class="doc-section"> |
| |
| <p>SetMagickMemoryMethods() sets the methods to acquire, resize, and destroy memory.</p> |
| |
| <p>The format of the SetMagickMemoryMethods() method is:</p> |
| |
| <pre class="code"> |
| SetMagickMemoryMethods(AcquireMemoryHandler acquire_memory_handler, |
| ResizeMemoryHandler resize_memory_handler, |
| DestroyMemoryHandler destroy_memory_handler) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>acquire_memory_handler</h5> |
| <p>method to acquire memory (e.g. malloc).</p> |
| |
| <h5>resize_memory_handler</h5> |
| <p>method to resize memory (e.g. realloc).</p> |
| |
| <h5>destroy_memory_handler</h5> |
| <p>method to destroy memory (e.g. free).</p> |
| |
| </div> |
| |
| </div> |
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