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239 <h1>Module memory Methods</h1>
240 <p class="navigation-index">[<a href="memory.html#AcquireAlignedMemory">AcquireAlignedMemory</a> • <a href="memory.html#AcquireMagickMemory">AcquireMagickMemory</a> • <a href="memory.html#AcquireQuantumMemory">AcquireQuantumMemory</a> • <a href="memory.html#CopyMagickMemory">CopyMagickMemory</a> • <a href="memory.html#GetMagickMemoryMethods">GetMagickMemoryMethods</a> • <a href="memory.html#RelinquishAlignedMemory">RelinquishAlignedMemory</a> • <a href="memory.html#RelinquishMagickMemory">RelinquishMagickMemory</a> • <a href="memory.html#ResetMagickMemory">ResetMagickMemory</a> • <a href="memory.html#ResizeMagickMemory">ResizeMagickMemory</a> • <a href="memory.html#ResizeQuantumMemory">ResizeQuantumMemory</a> • <a href="memory.html#SetMagickMemoryMethods">SetMagickMemoryMethods</a>]</p>
242 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireAlignedMemory">AcquireAlignedMemory</a></h2>
243 <div class="doc-section">
245 <p>AcquireAlignedMemory() returns a pointer to a block of memory at least size bytes whose address is a multiple of 16*sizeof(void *).</p>
247 <p>The format of the AcquireAlignedMemory method is:</p>
250 void *AcquireAlignedMemory(const size_t count,const size_t quantum)
253 <p>A description of each parameter follows:</p>
256 <p>the number of quantum elements to allocate.</p>
259 <p>the number of bytes in each quantum.</p>
262 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireMagickMemory">AcquireMagickMemory</a></h2>
263 <div class="doc-section">
265 <p>AcquireMagickMemory() returns a pointer to a block of memory at least size bytes suitably aligned for any use.</p>
267 <p>The format of the AcquireMagickMemory method is:</p>
270 void *AcquireMagickMemory(const size_t size)
273 <p>A description of each parameter follows:</p>
276 <p>the size of the memory in bytes to allocate.</p>
279 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireQuantumMemory">AcquireQuantumMemory</a></h2>
280 <div class="doc-section">
282 <p>AcquireQuantumMemory() returns a pointer to a block of memory at least count * quantum bytes suitably aligned for any use.</p>
284 <p>The format of the AcquireQuantumMemory method is:</p>
287 void *AcquireQuantumMemory(const size_t count,const size_t quantum)
290 <p>A description of each parameter follows:</p>
293 <p>the number of quantum elements to allocate.</p>
296 <p>the number of bytes in each quantum.</p>
299 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="CopyMagickMemory">CopyMagickMemory</a></h2>
300 <div class="doc-section">
302 <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>
304 <p>The format of the CopyMagickMemory method is:</p>
307 void *CopyMagickMemory(void *destination,const void *source,
311 <p>A description of each parameter follows:</p>
314 <p>the destination.</p>
320 <p>the size of the memory in bytes to allocate.</p>
323 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="GetMagickMemoryMethods">GetMagickMemoryMethods</a></h2>
324 <div class="doc-section">
326 <p>GetMagickMemoryMethods() gets the methods to acquire, resize, and destroy memory.</p>
328 <p>The format of the GetMagickMemoryMethods() method is:</p>
331 void GetMagickMemoryMethods(AcquireMemoryHandler *acquire_memory_handler,
332 ResizeMemoryHandler *resize_memory_handler,
333 DestroyMemoryHandler *destroy_memory_handler)
336 <p>A description of each parameter follows:</p>
338 <h5>acquire_memory_handler</h5>
339 <p>method to acquire memory (e.g. malloc).</p>
341 <h5>resize_memory_handler</h5>
342 <p>method to resize memory (e.g. realloc).</p>
344 <h5>destroy_memory_handler</h5>
345 <p>method to destroy memory (e.g. free).</p>
348 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishAlignedMemory">RelinquishAlignedMemory</a></h2>
349 <div class="doc-section">
351 <p>RelinquishAlignedMemory() frees memory acquired with AcquireAlignedMemory() or reuse.</p>
353 <p>The format of the RelinquishAlignedMemory method is:</p>
356 void *RelinquishAlignedMemory(void *memory)
359 <p>A description of each parameter follows:</p>
362 <p>A pointer to a block of memory to free for reuse.</p>
365 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishMagickMemory">RelinquishMagickMemory</a></h2>
366 <div class="doc-section">
368 <p>RelinquishMagickMemory() frees memory acquired with AcquireMagickMemory() or AcquireQuantumMemory() for reuse.</p>
370 <p>The format of the RelinquishMagickMemory method is:</p>
373 void *RelinquishMagickMemory(void *memory)
376 <p>A description of each parameter follows:</p>
379 <p>A pointer to a block of memory to free for reuse.</p>
382 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResetMagickMemory">ResetMagickMemory</a></h2>
383 <div class="doc-section">
385 <p>ResetMagickMemory() fills the first size bytes of the memory area pointed to by memory with the constant byte c.</p>
387 <p>The format of the ResetMagickMemory method is:</p>
390 void *ResetMagickMemory(void *memory,int byte,const size_t size)
393 <p>A description of each parameter follows:</p>
396 <p>A pointer to a memory allocation.</p>
399 <p>Set the memory to this value.</p>
402 <p>Size of the memory to reset.</p>
405 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeMagickMemory">ResizeMagickMemory</a></h2>
406 <div class="doc-section">
408 <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>
410 <p>The format of the ResizeMagickMemory method is:</p>
413 void *ResizeMagickMemory(void *memory,const size_t size)
416 <p>A description of each parameter follows:</p>
419 <p>A pointer to a memory allocation.</p>
422 <p>the new size of the allocated memory.</p>
425 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeQuantumMemory">ResizeQuantumMemory</a></h2>
426 <div class="doc-section">
428 <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>
430 <p>The format of the ResizeQuantumMemory method is:</p>
433 void *ResizeQuantumMemory(void *memory,const size_t count,
434 const size_t quantum)
437 <p>A description of each parameter follows:</p>
440 <p>A pointer to a memory allocation.</p>
443 <p>the number of quantum elements to allocate.</p>
446 <p>the number of bytes in each quantum.</p>
449 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="SetMagickMemoryMethods">SetMagickMemoryMethods</a></h2>
450 <div class="doc-section">
452 <p>SetMagickMemoryMethods() sets the methods to acquire, resize, and destroy memory.</p>
454 <p>The format of the SetMagickMemoryMethods() method is:</p>
457 SetMagickMemoryMethods(AcquireMemoryHandler acquire_memory_handler,
458 ResizeMemoryHandler resize_memory_handler,
459 DestroyMemoryHandler destroy_memory_handler)
462 <p>A description of each parameter follows:</p>
464 <h5>acquire_memory_handler</h5>
465 <p>method to acquire memory (e.g. malloc).</p>
467 <h5>resize_memory_handler</h5>
468 <p>method to resize memory (e.g. realloc).</p>
470 <h5>destroy_memory_handler</h5>
471 <p>method to destroy memory (e.g. free).</p>
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