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| <h5 class="subsubsection">3.2.2.12 Summary of <code>malloc</code>-Related Functions</h5> |
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| <p>Here is a summary of the functions that work with <code>malloc</code>: |
| |
| <dl> |
| <dt><code>void *malloc (size_t </code><var>size</var><code>)</code><dd>Allocate a block of <var>size</var> bytes. See <a href="Basic-Allocation.html#Basic-Allocation">Basic Allocation</a>. |
| |
| <br><dt><code>void free (void *</code><var>addr</var><code>)</code><dd>Free a block previously allocated by <code>malloc</code>. See <a href="Freeing-after-Malloc.html#Freeing-after-Malloc">Freeing after Malloc</a>. |
| |
| <br><dt><code>void *realloc (void *</code><var>addr</var><code>, size_t </code><var>size</var><code>)</code><dd>Make a block previously allocated by <code>malloc</code> larger or smaller, |
| possibly by copying it to a new location. See <a href="Changing-Block-Size.html#Changing-Block-Size">Changing Block Size</a>. |
| |
| <br><dt><code>void *calloc (size_t </code><var>count</var><code>, size_t </code><var>eltsize</var><code>)</code><dd>Allocate a block of <var>count</var> * <var>eltsize</var> bytes using |
| <code>malloc</code>, and set its contents to zero. See <a href="Allocating-Cleared-Space.html#Allocating-Cleared-Space">Allocating Cleared Space</a>. |
| |
| <br><dt><code>void *valloc (size_t </code><var>size</var><code>)</code><dd>Allocate a block of <var>size</var> bytes, starting on a page boundary. |
| See <a href="Aligned-Memory-Blocks.html#Aligned-Memory-Blocks">Aligned Memory Blocks</a>. |
| |
| <br><dt><code>void *memalign (size_t </code><var>size</var><code>, size_t </code><var>boundary</var><code>)</code><dd>Allocate a block of <var>size</var> bytes, starting on an address that is a |
| multiple of <var>boundary</var>. See <a href="Aligned-Memory-Blocks.html#Aligned-Memory-Blocks">Aligned Memory Blocks</a>. |
| |
| <br><dt><code>int mallopt (int </code><var>param</var><code>, int </code><var>value</var><code>)</code><dd>Adjust a tunable parameter. See <a href="Malloc-Tunable-Parameters.html#Malloc-Tunable-Parameters">Malloc Tunable Parameters</a>. |
| |
| <br><dt><code>int mcheck (void (*</code><var>abortfn</var><code>) (void))</code><dd>Tell <code>malloc</code> to perform occasional consistency checks on |
| dynamically allocated memory, and to call <var>abortfn</var> when an |
| inconsistency is found. See <a href="Heap-Consistency-Checking.html#Heap-Consistency-Checking">Heap Consistency Checking</a>. |
| |
| <br><dt><code>void *(*__malloc_hook) (size_t </code><var>size</var><code>, const void *</code><var>caller</var><code>)</code><dd>A pointer to a function that <code>malloc</code> uses whenever it is called. |
| |
| <br><dt><code>void *(*__realloc_hook) (void *</code><var>ptr</var><code>, size_t </code><var>size</var><code>, const void *</code><var>caller</var><code>)</code><dd>A pointer to a function that <code>realloc</code> uses whenever it is called. |
| |
| <br><dt><code>void (*__free_hook) (void *</code><var>ptr</var><code>, const void *</code><var>caller</var><code>)</code><dd>A pointer to a function that <code>free</code> uses whenever it is called. |
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| <br><dt><code>void (*__memalign_hook) (size_t </code><var>size</var><code>, size_t </code><var>alignment</var><code>, const void *</code><var>caller</var><code>)</code><dd>A pointer to a function that <code>memalign</code> uses whenever it is called. |
| |
| <br><dt><code>struct mallinfo mallinfo (void)</code><dd>Return information about the current dynamic memory usage. |
| See <a href="Statistics-of-Malloc.html#Statistics-of-Malloc">Statistics of Malloc</a>. |
| </dl> |
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