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202 <h1>Module memory Methods</h1>
203 <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>
205 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireAlignedMemory">AcquireAlignedMemory</a></h2>
206 <div class="doc-section">
208 <p>AcquireAlignedMemory() returns a pointer to a block of memory at least size bytes whose address is a multiple of 16*sizeof(void *).</p>
210 <p>The format of the AcquireAlignedMemory method is:</p>
213 void *AcquireAlignedMemory(const size_t count,const size_t quantum)
216 <p>A description of each parameter follows:</p>
219 <p>the number of quantum elements to allocate.</p>
222 <p>the number of bytes in each quantum.</p>
225 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireMagickMemory">AcquireMagickMemory</a></h2>
226 <div class="doc-section">
228 <p>AcquireMagickMemory() returns a pointer to a block of memory at least size bytes suitably aligned for any use.</p>
230 <p>The format of the AcquireMagickMemory method is:</p>
233 void *AcquireMagickMemory(const size_t size)
236 <p>A description of each parameter follows:</p>
239 <p>the size of the memory in bytes to allocate.</p>
242 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="AcquireQuantumMemory">AcquireQuantumMemory</a></h2>
243 <div class="doc-section">
245 <p>AcquireQuantumMemory() returns a pointer to a block of memory at least count * quantum bytes suitably aligned for any use.</p>
247 <p>The format of the AcquireQuantumMemory method is:</p>
250 void *AcquireQuantumMemory(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="CopyMagickMemory">CopyMagickMemory</a></h2>
263 <div class="doc-section">
265 <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>
267 <p>The format of the CopyMagickMemory method is:</p>
270 void *CopyMagickMemory(void *destination,const void *source,
274 <p>A description of each parameter follows:</p>
277 <p>the destination.</p>
283 <p>the size of the memory in bytes to allocate.</p>
286 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="GetMagickMemoryMethods">GetMagickMemoryMethods</a></h2>
287 <div class="doc-section">
289 <p>GetMagickMemoryMethods() gets the methods to acquire, resize, and destroy memory.</p>
291 <p>The format of the GetMagickMemoryMethods() method is:</p>
294 void GetMagickMemoryMethods(AcquireMemoryHandler *acquire_memory_handler,
295 ResizeMemoryHandler *resize_memory_handler,
296 DestroyMemoryHandler *destroy_memory_handler)
299 <p>A description of each parameter follows:</p>
301 <h5>acquire_memory_handler</h5>
302 <p>method to acquire memory (e.g. malloc).</p>
304 <h5>resize_memory_handler</h5>
305 <p>method to resize memory (e.g. realloc).</p>
307 <h5>destroy_memory_handler</h5>
308 <p>method to destroy memory (e.g. free).</p>
311 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishAlignedMemory">RelinquishAlignedMemory</a></h2>
312 <div class="doc-section">
314 <p>RelinquishAlignedMemory() frees memory acquired with AcquireAlignedMemory() or reuse.</p>
316 <p>The format of the RelinquishAlignedMemory method is:</p>
319 void *RelinquishAlignedMemory(void *memory)
322 <p>A description of each parameter follows:</p>
325 <p>A pointer to a block of memory to free for reuse.</p>
328 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="RelinquishMagickMemory">RelinquishMagickMemory</a></h2>
329 <div class="doc-section">
331 <p>RelinquishMagickMemory() frees memory acquired with AcquireMagickMemory() or AcquireQuantumMemory() for reuse.</p>
333 <p>The format of the RelinquishMagickMemory method is:</p>
336 void *RelinquishMagickMemory(void *memory)
339 <p>A description of each parameter follows:</p>
342 <p>A pointer to a block of memory to free for reuse.</p>
345 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResetMagickMemory">ResetMagickMemory</a></h2>
346 <div class="doc-section">
348 <p>ResetMagickMemory() fills the first size bytes of the memory area pointed to by memory with the constant byte c.</p>
350 <p>The format of the ResetMagickMemory method is:</p>
353 void *ResetMagickMemory(void *memory,int byte,const size_t size)
356 <p>A description of each parameter follows:</p>
359 <p>A pointer to a memory allocation.</p>
362 <p>Set the memory to this value.</p>
365 <p>Size of the memory to reset.</p>
368 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeMagickMemory">ResizeMagickMemory</a></h2>
369 <div class="doc-section">
371 <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>
373 <p>The format of the ResizeMagickMemory method is:</p>
376 void *ResizeMagickMemory(void *memory,const size_t size)
379 <p>A description of each parameter follows:</p>
382 <p>A pointer to a memory allocation.</p>
385 <p>the new size of the allocated memory.</p>
388 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="ResizeQuantumMemory">ResizeQuantumMemory</a></h2>
389 <div class="doc-section">
391 <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>
393 <p>The format of the ResizeQuantumMemory method is:</p>
396 void *ResizeQuantumMemory(void *memory,const size_t count,
397 const size_t quantum)
400 <p>A description of each parameter follows:</p>
403 <p>A pointer to a memory allocation.</p>
406 <p>the number of quantum elements to allocate.</p>
409 <p>the number of bytes in each quantum.</p>
412 <h2><a href="http://www.imagemagick.org/api/MagickCore/memory_8c.html" id="SetMagickMemoryMethods">SetMagickMemoryMethods</a></h2>
413 <div class="doc-section">
415 <p>SetMagickMemoryMethods() sets the methods to acquire, resize, and destroy memory.</p>
417 <p>The format of the SetMagickMemoryMethods() method is:</p>
420 SetMagickMemoryMethods(AcquireMemoryHandler acquire_memory_handler,
421 ResizeMemoryHandler resize_memory_handler,
422 DestroyMemoryHandler destroy_memory_handler)
425 <p>A description of each parameter follows:</p>
427 <h5>acquire_memory_handler</h5>
428 <p>method to acquire memory (e.g. malloc).</p>
430 <h5>resize_memory_handler</h5>
431 <p>method to resize memory (e.g. realloc).</p>
433 <h5>destroy_memory_handler</h5>
434 <p>method to destroy memory (e.g. free).</p>
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