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218 <h1>Module memory Methods</h1>
219 <p class="navigation-index">[<a href="#AcquireAlignedMemory">AcquireAlignedMemory</a> • <a href="#AcquireMagickMemory">AcquireMagickMemory</a> • <a href="#AcquireQuantumMemory">AcquireQuantumMemory</a> • <a href="#CopyMagickMemory">CopyMagickMemory</a> • <a href="#GetMagickMemoryMethods">GetMagickMemoryMethods</a> • <a href="#RelinquishAlignedMemory">RelinquishAlignedMemory</a> • <a href="#RelinquishMagickMemory">RelinquishMagickMemory</a> • <a href="#ResetMagickMemory">ResetMagickMemory</a> • <a href="#ResizeMagickMemory">ResizeMagickMemory</a> • <a href="#ResizeQuantumMemory">ResizeQuantumMemory</a> • <a href="#SetMagickMemoryMethods">SetMagickMemoryMethods</a>]</p>
221 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireAlignedMemory">AcquireAlignedMemory</a></h2>
222 <div class="doc-section">
224 <p>AcquireAlignedMemory() returns a pointer to a block of memory at least size bytes whose address is a multiple of 16*sizeof(void *).</p>
226 <p>The format of the AcquireAlignedMemory method is:</p>
229 void *AcquireAlignedMemory(const size_t count,const size_t quantum)
232 <p>A description of each parameter follows:</p>
235 <p>the number of quantum elements to allocate.</p>
238 <p>the number of bytes in each quantum.</p>
241 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireMagickMemory">AcquireMagickMemory</a></h2>
242 <div class="doc-section">
244 <p>AcquireMagickMemory() returns a pointer to a block of memory at least size bytes suitably aligned for any use.</p>
246 <p>The format of the AcquireMagickMemory method is:</p>
249 void *AcquireMagickMemory(const size_t size)
252 <p>A description of each parameter follows:</p>
255 <p>the size of the memory in bytes to allocate.</p>
258 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireQuantumMemory">AcquireQuantumMemory</a></h2>
259 <div class="doc-section">
261 <p>AcquireQuantumMemory() returns a pointer to a block of memory at least count * quantum bytes suitably aligned for any use.</p>
263 <p>The format of the AcquireQuantumMemory method is:</p>
266 void *AcquireQuantumMemory(const size_t count,const size_t quantum)
269 <p>A description of each parameter follows:</p>
272 <p>the number of quantum elements to allocate.</p>
275 <p>the number of bytes in each quantum.</p>
278 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="CopyMagickMemory">CopyMagickMemory</a></h2>
279 <div class="doc-section">
281 <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>
283 <p>The format of the CopyMagickMemory method is:</p>
286 void *CopyMagickMemory(void *destination,const void *source,
290 <p>A description of each parameter follows:</p>
293 <p>the destination.</p>
299 <p>the size of the memory in bytes to allocate.</p>
302 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="GetMagickMemoryMethods">GetMagickMemoryMethods</a></h2>
303 <div class="doc-section">
305 <p>GetMagickMemoryMethods() gets the methods to acquire, resize, and destroy memory.</p>
307 <p>The format of the GetMagickMemoryMethods() method is:</p>
310 void GetMagickMemoryMethods(AcquireMemoryHandler *acquire_memory_handler,
311 ResizeMemoryHandler *resize_memory_handler,
312 DestroyMemoryHandler *destroy_memory_handler)
315 <p>A description of each parameter follows:</p>
317 <h5>acquire_memory_handler</h5>
318 <p>method to acquire memory (e.g. malloc).</p>
320 <h5>resize_memory_handler</h5>
321 <p>method to resize memory (e.g. realloc).</p>
323 <h5>destroy_memory_handler</h5>
324 <p>method to destroy memory (e.g. free).</p>
327 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishAlignedMemory">RelinquishAlignedMemory</a></h2>
328 <div class="doc-section">
330 <p>RelinquishAlignedMemory() frees memory acquired with AcquireAlignedMemory() or reuse.</p>
332 <p>The format of the RelinquishAlignedMemory method is:</p>
335 void *RelinquishAlignedMemory(void *memory)
338 <p>A description of each parameter follows:</p>
341 <p>A pointer to a block of memory to free for reuse.</p>
344 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishMagickMemory">RelinquishMagickMemory</a></h2>
345 <div class="doc-section">
347 <p>RelinquishMagickMemory() frees memory acquired with AcquireMagickMemory() or AcquireQuantumMemory() for reuse.</p>
349 <p>The format of the RelinquishMagickMemory method is:</p>
352 void *RelinquishMagickMemory(void *memory)
355 <p>A description of each parameter follows:</p>
358 <p>A pointer to a block of memory to free for reuse.</p>
361 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResetMagickMemory">ResetMagickMemory</a></h2>
362 <div class="doc-section">
364 <p>ResetMagickMemory() fills the first size bytes of the memory area pointed to by memory with the constant byte c.</p>
366 <p>The format of the ResetMagickMemory method is:</p>
369 void *ResetMagickMemory(void *memory,int byte,const size_t size)
372 <p>A description of each parameter follows:</p>
375 <p>A pointer to a memory allocation.</p>
378 <p>Set the memory to this value.</p>
381 <p>Size of the memory to reset.</p>
384 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeMagickMemory">ResizeMagickMemory</a></h2>
385 <div class="doc-section">
387 <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>
389 <p>The format of the ResizeMagickMemory method is:</p>
392 void *ResizeMagickMemory(void *memory,const size_t size)
395 <p>A description of each parameter follows:</p>
398 <p>A pointer to a memory allocation.</p>
401 <p>the new size of the allocated memory.</p>
404 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeQuantumMemory">ResizeQuantumMemory</a></h2>
405 <div class="doc-section">
407 <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>
409 <p>The format of the ResizeQuantumMemory method is:</p>
412 void *ResizeQuantumMemory(void *memory,const size_t count,
413 const size_t quantum)
416 <p>A description of each parameter follows:</p>
419 <p>A pointer to a memory allocation.</p>
422 <p>the number of quantum elements to allocate.</p>
425 <p>the number of bytes in each quantum.</p>
428 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="SetMagickMemoryMethods">SetMagickMemoryMethods</a></h2>
429 <div class="doc-section">
431 <p>SetMagickMemoryMethods() sets the methods to acquire, resize, and destroy memory.</p>
433 <p>The format of the SetMagickMemoryMethods() method is:</p>
436 SetMagickMemoryMethods(AcquireMemoryHandler acquire_memory_handler,
437 ResizeMemoryHandler resize_memory_handler,
438 DestroyMemoryHandler destroy_memory_handler)
441 <p>A description of each parameter follows:</p>
443 <h5>acquire_memory_handler</h5>
444 <p>method to acquire memory (e.g. malloc).</p>
446 <h5>resize_memory_handler</h5>
447 <p>method to resize memory (e.g. realloc).</p>
449 <h5>destroy_memory_handler</h5>
450 <p>method to destroy memory (e.g. free).</p>
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