?? brealloc.htm
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<td class="titleLeft" align=left width="33%"><b> brealloc</b></td><td class="titleCenter" align=center width="33%"><b> basic</b></td><td class="titleRight" align=right width="33%"><B> EMF</B></td></tr>
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<h2>Synopsis</h2><p>Reallocate a block of memory.</p><h2>Prototype</h2><pre>
#include "uemf.h"
void *<b>brealloc</b>(B_ARGS_DEC, void* mp, int newsize);
</pre><h2>Parameters</h2><table width=100% BORDER="0" CELLPADDING="0" CELLSPACING="0">
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<td width="11%">B_ARGS_DEC</td><td width="89%">Callers source file name and line number. Really two arguments.</td></tr>
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<td width="11%">mp</td><td width="89%">Pointer to a previously allocated memory block using balloc.</td></tr>
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<td width="11%">newsize</td><td width="89%">New size in bytes.</td></tr>
</table><h2>Description</h2><p>
The GoAhead equivalent of realloc.
</p><p><B>Note:</B> Allows NULL pointers. Will just do a balloc on the size if
that is the case.</p><h2>Return Value</h2><p>
Return pointer to newly allocated block. If the realloc fails, NULL is returned
and the previous buffer is preserved.
</p><h2>Example</h2><pre>
/***********************************************************************/
/*
* Add a character to a string buffer
*/
static void put_char(strbuf_t *buf, char_t c)
{
if (buf->count >= buf->size) {
if (! (buf->flags & STR_REALLOC)) {
return;
}
buf->size += STR_INC;
if (buf->size > buf->max && buf->size > STR_INC) {
a_assert(buf->size <= buf->max);
buf->size -= STR_INC;
return;
}
if (buf->s == NULL) {
buf->s = balloc(B_L, buf->size * sizeof(char_t));
} else {
buf->s = brealloc(B_L, buf->s, buf->size * sizeof(char_t));
}
}
buf->s[buf->count] = c;
++buf->count;
}
</pre><h2>Stability Classification</h2><p>Stable.</p><h2></h2><h2></h2><h2>See Also</h2><p>
<a href="balloc.htm">balloc</a>,
<a href="bfree.htm">bfree</a></p></td></tr></table>
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