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<title>NeL: TemplateNLMISC::CBlockMemory< T, __ctor_dtor__ > class Reference</title>
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<h1>NLMISC::CBlockMemory< T, __ctor_dtor__ > Class Template Reference</h1><code>#include <<a class="el" href="a05490.html">block_memory.h</a>></code>
<p>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<h3>template<class T, bool __ctor_dtor__ = true><br>
class NLMISC::CBlockMemory< T, __ctor_dtor__ ></h3>
Block memory allocation<p>
This memory manager is a fast memory allocator, doing same thing as new/delete. It works by block. block are always allocated, never deleted. alocation/free are in O(1).<p>
Elements with sizeof(T)<sizeof(void*) should not be used with this allocator, because sizeEltInMemory= max(sizeof(T),sizeof(void*)).<p>
<a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya5">free()</a> check invalid ptr in debug only, for extra cost of 8 octets per element.<p>
NB: if template parameter __ctor_dtor__ is false, then ctor and dtor are not called when an element is <a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya2">allocate()</a>-ed or deallocate()-ed.<p>
<dl compact><dt><b>Author:</b></dt><dd>Lionel Berenguier <p>
Nevrax France </dd></dl>
<dl compact><dt><b>Date:</b></dt><dd>2001 </dd></dl>
<p>
<p>
Definition at line <a class="el" href="a05490.html#l00065">65</a> of file <a class="el" href="a05490.html">block_memory.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya0">__stl_alloc_changeEltSize</a> (<a class="el" href="a04558.html#a15">uint</a> eltSize)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a15">uint</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya1">__stl_alloc_getEltSize</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>T * </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya2">allocate</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">allocate an element. ctor is called. <a href="#NLMISC_1_1CBlockMemorya2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya3">CBlockMemory</a> (const <a class="el" href="a02274.html">CBlockMemory</a>< T, __ctor_dtor__ > &other)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya4">CBlockMemory</a> (<a class="el" href="a04558.html#a15">uint</a> blockSize=16)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#NLMISC_1_1CBlockMemorya4"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya5">free</a> (T *ptr)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">delete an element allocated with this manager. dtor is called. NULL is tested. <a href="#NLMISC_1_1CBlockMemorya5"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya6">purge</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya7">~CBlockMemory</a> ()</td></tr>
<tr><td colspan=2><br><h2>Private Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>enum </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryy2">TCheckIdent</a> { <a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy0">CheckAllocatedIdent</a> = 0x01234567,
<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy1">CheckDeletedIdent</a> = 0x89ABCDEF
}</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">For debug only, check ident. <a href="#NLMISC_1_1CBlockMemoryy2">More...</a><br><br></td></tr>
<tr><td colspan=2><br><h2>Private Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryd0">buildBlock</a> (<a class="el" href="a02275.html">CBlock</a> &block)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryd1">releaseBlock</a> (<a class="el" href="a02275.html">CBlock</a> &block)</td></tr>
<tr><td colspan=2><br><h2>Private Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>std::list< <a class="el" href="a02275.html">CBlock</a> > </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">list of blocks. <a href="#NLMISC_1_1CBlockMemoryr0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a15">uint</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">size of a block. <a href="#NLMISC_1_1CBlockMemoryr1"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a15">uint</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">size of an element in the block. <a href="#NLMISC_1_1CBlockMemoryr2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a02516.html">CFastMutex</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Must be ThreadSafe (eg: important for 3D PointLight and list of transform). <a href="#NLMISC_1_1CBlockMemoryr3"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a04558.html#a14">sint</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">number of elements allocated. <a href="#NLMISC_1_1CBlockMemoryr4"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void * </td><td class="memItemRight" valign=bottom><a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">next free element. <a href="#NLMISC_1_1CBlockMemoryr5"></a><br><br></td></tr>
</table>
<hr><h2>Member Enumeration Documentation</h2>
<a class="anchor" name="NLMISC_1_1CBlockMemoryy2" doxytag="NLMISC::CBlockMemory::TCheckIdent" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
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template<class T, bool __ctor_dtor__ = true> </td>
</tr>
<tr>
<td class="md" nowrap valign="top"> enum <a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryy2">NLMISC::CBlockMemory::TCheckIdent</a><code> [private]</code>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
For debug only, check ident.
<p>
<dl compact><dt><b>Enumeration values: </b></dt><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em><a class="anchor" name="NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy0" doxytag="CheckAllocatedIdent" ></a>CheckAllocatedIdent</em> </td><td>
</td></tr>
<tr><td valign=top><em><a class="anchor" name="NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy1" doxytag="CheckDeletedIdent" ></a>CheckDeletedIdent</em> </td><td>
</td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="a05490.html#l00260">260</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00260 { <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy0">CheckAllocatedIdent</a>= 0x01234567, <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy1">CheckDeletedIdent</a>= 0x89ABCDEF };
</pre></div> </td>
</tr>
</table>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="NLMISC_1_1CBlockMemorya4" doxytag="NLMISC::CBlockMemory::CBlockMemory" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" colspan="4">
template<class T, bool __ctor_dtor__ = true> </td>
</tr>
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html">CBlockMemory</a> </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname1" valign="top" nowrap> <em>blockSize</em> = 16 </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Constructor.
<p>
<p>
Definition at line <a class="el" href="a05490.html#l00070">70</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00071 {
00072 <a class="code" href="a04199.html#a6">nlassert</a>(blockSize);
00073 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a>= blockSize;
00074 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>= std::max(<span class="keyword">sizeof</span>(T), <span class="keyword">sizeof</span>(<span class="keywordtype">void</span>*));
00075 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>= NULL;
00076 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a>= 0;
00077 }
</pre></div> </td>
</tr>
</table>
<a class="anchor" name="NLMISC_1_1CBlockMemorya3" doxytag="NLMISC::CBlockMemory::CBlockMemory" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
</tr>
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<td class="md" nowrap valign="top"> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html">CBlockMemory</a> </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="a02274.html">CBlockMemory</a>< T, __ctor_dtor__ > & </td>
<td class="mdname1" valign="top" nowrap> <em>other</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
<p>
Definition at line <a class="el" href="a05490.html#l00079">79</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00080 {
00081 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a>= other._BlockSize;
00082 <span class="comment">// if other block is rebinded, don't copy its rebinded size.</span>
00083 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>= std::max(<span class="keyword">sizeof</span>(T), <span class="keyword">sizeof</span>(<span class="keywordtype">void</span>*));
00084 <span class="comment">// No elts allocated</span>
00085 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>= NULL;
00086 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a>= 0;
00087 }
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemorya7" doxytag="NLMISC::CBlockMemory::~CBlockMemory" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::~<a class="el" href="a02274.html">CBlockMemory</a> </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
<a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya6">purge()</a>
<p>
Definition at line <a class="el" href="a05490.html#l00090">90</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00091 {
00092 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemorya6">purge</a>();
00093 }
</pre></div> </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="NLMISC_1_1CBlockMemorya0" doxytag="NLMISC::CBlockMemory::__stl_alloc_changeEltSize" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> void <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::__stl_alloc_changeEltSize </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a04558.html#a15">uint</a> </td>
<td class="mdname1" valign="top" nowrap> <em>eltSize</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
Definition at line <a class="el" href="a05490.html#l00209">209</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00210 {
00211 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.enter();
00212
00213 <span class="comment">// must not be used with object ctor/dtor behavior.</span>
00214 <a class="code" href="a04199.html#a6">nlassert</a>(__ctor_dtor__ == <span class="keyword">false</span>);
00215 <span class="comment">// format size.</span>
00216 eltSize= std::max(eltSize, <span class="keyword">sizeof</span>(<span class="keywordtype">void</span>*));
00217 <span class="comment">// if not the same size as before</span>
00218 <span class="keywordflow">if</span>(<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>!= eltSize)
00219 {
00220 <span class="comment">// verify that rebind is made before any allocation!!</span>
00221 <a class="code" href="a04199.html#a6">nlassert</a>(<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.empty());
00222 <span class="comment">// change the size.</span>
00223 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>= eltSize;
00224 }
00225
00226 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.leave();
00227 };
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemorya1" doxytag="NLMISC::CBlockMemory::__stl_alloc_getEltSize" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a15">uint</a> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::__stl_alloc_getEltSize </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline]</code></td>
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<p>
Definition at line <a class="el" href="a05490.html#l00229">229</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00230 {
00231 <span class="keywordflow">return</span> <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>;
00232 }
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemorya2" doxytag="NLMISC::CBlockMemory::allocate" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> T* <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::allocate </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
allocate an element. ctor is called.
<p>
<p>
Definition at line <a class="el" href="a05490.html#l00097">97</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00098 {
00099 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.enter();
00100
00101 <span class="comment">// if not enough memory, aloc a block.</span>
00102 <span class="keywordflow">if</span>(!<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>)
00103 {
00104 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.push_front(CBlock());
00105 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryd0">buildBlock</a>(*<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.begin());
00106 <span class="comment">// new free elt points to the beginning of this block.</span>
00107 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>= (*<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.begin()).Data;
00108 <span class="preprocessor">#ifdef NL_DEBUG</span>
00109 <span class="preprocessor"></span> <span class="comment">// if debug, must decal for begin check.</span>
00110 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>= (<a class="code" href="a04558.html#a11">uint32</a>*)<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a> + 1;
00111 <span class="preprocessor">#endif</span>
00112 <span class="preprocessor"></span> }
00113
00114 <span class="comment">// choose next free elt.</span>
00115 <a class="code" href="a04199.html#a6">nlassert</a>(_NextFreeElt);
00116 T* ret= (T*)<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>;
00117
00118 <span class="comment">// update _NextFreeElt, so it points to the next free element.</span>
00119 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>= *(<span class="keywordtype">void</span>**)<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>;
00120
00121 <span class="comment">// construct the allocated element.</span>
00122 <span class="keywordflow">if</span>( __ctor_dtor__ )
00123 <span class="preprocessor">#undef new</span>
00124 <span class="preprocessor"></span> <span class="keyword">new</span> (ret) T;
00125 <span class="preprocessor">#define new NL_NEW</span>
00126 <span class="preprocessor"></span>
00127
00128 <span class="comment">// some simple Check.</span>
00129 <span class="preprocessor">#ifdef NL_DEBUG</span>
00130 <span class="preprocessor"></span> <a class="code" href="a04558.html#a11">uint32</a> *checkStart= (<a class="code" href="a04558.html#a11">uint32</a>*)(<span class="keywordtype">void</span>*)ret-1;
00131 <a class="code" href="a04558.html#a11">uint32</a> *checkEnd = (<a class="code" href="a04558.html#a11">uint32</a>*)((<a class="code" href="a04558.html#a7">uint8</a>*)(<span class="keywordtype">void</span>*)ret+<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>);
00132 <a class="code" href="a04199.html#a6">nlassert</a>( *checkStart == CheckDeletedIdent);
00133 <a class="code" href="a04199.html#a6">nlassert</a>( *checkEnd == CheckDeletedIdent);
00134 <span class="comment">// if ok, mark this element as allocated.</span>
00135 *checkStart= <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy0">CheckAllocatedIdent</a>;
00136 *checkEnd = CheckAllocatedIdent;
00137 <span class="preprocessor">#endif</span>
00138 <span class="preprocessor"></span>
00139 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a>++;
00140
00141 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.leave();
00142
00143 <span class="keywordflow">return</span> ret;
00144 }
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryd0" doxytag="NLMISC::CBlockMemory::buildBlock" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> void <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::buildBlock </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a02275.html">CBlock</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>block</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline, private]</code></td>
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<p>
Definition at line <a class="el" href="a05490.html#l00264">264</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
Referenced by <a class="el" href="a05490.html#l00097">NLMISC::CBlockMemory< CNode >::allocate()</a>.
<p>
<div class="fragment"><pre>00265 {
00266 <a class="code" href="a04558.html#a15">uint</a> i;
00267 <a class="code" href="a04558.html#a11">uint32</a> nodeSize= <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>;
00268 <span class="preprocessor">#ifdef NL_DEBUG</span>
00269 <span class="preprocessor"></span> <span class="comment">// must allocate more size for mem checks in debug.</span>
00270 nodeSize+= 2*<span class="keyword">sizeof</span>(<a class="code" href="a04558.html#a11">uint32</a>);
00271 <span class="preprocessor">#endif</span>
00272 <span class="preprocessor"></span>
00273 <span class="comment">// allocate.</span>
00274 block.Data = (<span class="keywordtype">void</span>*)<span class="keyword">new</span> <a class="code" href="a04558.html#a7">uint8</a> [<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a> * nodeSize];
00275
00276 <span class="comment">// by default, all elements are not allocated, build the list of free elements.</span>
00277 <span class="keywordtype">void</span> *ptr= block.Data;
00278 <span class="preprocessor">#ifdef NL_DEBUG</span>
00279 <span class="preprocessor"></span> <span class="comment">// if debug, must decal for begin check.</span>
00280 ptr= (<a class="code" href="a04558.html#a11">uint32</a>*)ptr + 1;
00281 <span class="preprocessor">#endif</span>
00282 <span class="preprocessor"></span> <span class="keywordflow">for</span>(i=0; i<<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a>-1; i++)
00283 {
00284 <span class="comment">// next elt.</span>
00285 <span class="keywordtype">void</span> *next= (<a class="code" href="a04558.html#a7">uint8</a>*)ptr + nodeSize;
00286 <span class="comment">// points to the next element in this array.</span>
00287 *(<span class="keywordtype">void</span>**)ptr= next;
00288 <span class="comment">// next.</span>
00289 ptr= next;
00290 }
00291 <span class="comment">// last element points to NULL.</span>
00292 *(<span class="keywordtype">void</span>**)ptr= NULL;
00293
00294
00295 <span class="comment">// If debug, must init all check values to CheckDeletedIdent.</span>
00296 <span class="preprocessor">#ifdef NL_DEBUG</span>
00297 <span class="preprocessor"></span> ptr= block.Data;
00298 <span class="comment">// must decal for begin check.</span>
00299 ptr= (<a class="code" href="a04558.html#a11">uint32</a>*)ptr + 1;
00300 <span class="comment">// fill all nodes.</span>
00301 <span class="keywordflow">for</span>(i=0; i<<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a>; i++)
00302 {
00303 <a class="code" href="a04558.html#a11">uint32</a> *checkStart= (<a class="code" href="a04558.html#a11">uint32</a>*)ptr-1;
00304 <a class="code" href="a04558.html#a11">uint32</a> *checkEnd = (<a class="code" href="a04558.html#a11">uint32</a>*)((<a class="code" href="a04558.html#a7">uint8</a>*)ptr+_EltSize);
00305 <span class="comment">// mark this element as deleted.</span>
00306 *checkStart= <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy1">CheckDeletedIdent</a>;
00307 *checkEnd = CheckDeletedIdent;
00308
00309 <span class="comment">// next elt.</span>
00310 ptr= (<a class="code" href="a04558.html#a7">uint8</a>*)ptr + nodeSize;
00311 }
00312 <span class="preprocessor">#endif</span>
00313 <span class="preprocessor"></span>
00314 }
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemorya5" doxytag="NLMISC::CBlockMemory::free" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> void <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::free </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">T * </td>
<td class="mdname1" valign="top" nowrap> <em>ptr</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
delete an element allocated with this manager. dtor is called. NULL is tested.
<p>
<p>
Definition at line <a class="el" href="a05490.html#l00147">147</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
<div class="fragment"><pre>00148 {
00149 <span class="keywordflow">if</span>(!ptr)
00150 <span class="keywordflow">return</span>;
00151
00152 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.enter();
00153
00154 <span class="comment">// some simple Check.</span>
00155 <a class="code" href="a04199.html#a6">nlassert</a>(_NAllocatedElts>0);
00156 <span class="preprocessor">#ifdef NL_DEBUG</span>
00157 <span class="preprocessor"></span> <a class="code" href="a04558.html#a11">uint32</a> *checkStart= (<a class="code" href="a04558.html#a11">uint32</a>*)(<span class="keywordtype">void</span>*)ptr-1;
00158 <a class="code" href="a04558.html#a11">uint32</a> *checkEnd = (<a class="code" href="a04558.html#a11">uint32</a>*)((<a class="code" href="a04558.html#a7">uint8</a>*)(<span class="keywordtype">void</span>*)ptr+<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a>);
00159 <a class="code" href="a04199.html#a6">nlassert</a>( *checkStart == CheckAllocatedIdent);
00160 <a class="code" href="a04199.html#a6">nlassert</a>( *checkEnd == CheckAllocatedIdent);
00161 <span class="comment">// if ok, mark this element as deleted.</span>
00162 *checkStart= <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryy2NLMISC_1_1CBlockMemoryy1">CheckDeletedIdent</a>;
00163 *checkEnd = CheckDeletedIdent;
00164 <span class="preprocessor">#endif</span>
00165 <span class="preprocessor"></span>
00166 <span class="comment">// destruct the element.</span>
00167 <span class="keywordflow">if</span>( __ctor_dtor__ )
00168 ptr->~T();
00169
00170 <span class="comment">// just append this freed element to the list.</span>
00171 *(<span class="keywordtype">void</span>**)ptr= <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>;
00172 _NextFreeElt= (<span class="keywordtype">void</span>*) ptr;
00173
00174 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a>--;
00175
00176 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.leave();
00177 }
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemorya6" doxytag="NLMISC::CBlockMemory::purge" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> void <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::purge </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<p>
delete all blocks, freeing all memory. It is an error to <a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya6">purge()</a> or delete a <a class="el" href="a02274.html">CBlockMemory</a>, while elements still remains!! You must free your elements with <a class="el" href="a02274.html#NLMISC_1_1CBlockMemorya5">free()</a>. NB: you can disable this assert if you set NL3D_BlockMemoryAssertOnPurge to false (good to quit a program quickly without uninitialize).
<p>
Definition at line <a class="el" href="a05490.html#l00185">185</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
<p>
Referenced by <a class="el" href="a05490.html#l00090">NLMISC::CBlockMemory< CNode >::~CBlockMemory()</a>.
<p>
<div class="fragment"><pre>00186 {
00187 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.enter();
00188
00189 <span class="keywordflow">if</span>(<a class="code" href="a05378.html#a4">NL3D_BlockMemoryAssertOnPurge</a>)
00190 <a class="code" href="a04199.html#a6">nlassert</a>(_NAllocatedElts==0);
00191
00192 <span class="keywordflow">while</span>(<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.begin()!=<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.end())
00193 {
00194 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryd1">releaseBlock</a>(*<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.begin());
00195 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.erase(<a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a>.begin());
00196 }
00197
00198 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a>= NULL;
00199 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a>= 0;
00200
00201 <a class="code" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a>.leave();
00202 }
</pre></div> </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryd1" doxytag="NLMISC::CBlockMemory::releaseBlock" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> void <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::releaseBlock </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="a02275.html">CBlock</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>block</em> </td>
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<td class="md" nowrap><code> [inline, private]</code></td>
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Definition at line <a class="el" href="a05490.html#l00315">315</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
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Referenced by <a class="el" href="a05490.html#l00185">NLMISC::CBlockMemory< CNode >::purge()</a>.
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<div class="fragment"><pre>00316 {
00317 <span class="keyword">delete</span> [] ((<a class="code" href="a04558.html#a7">uint8</a>*)block.Data);
00318 }
</pre></div> </td>
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<hr><h2>Field Documentation</h2>
<a class="anchor" name="NLMISC_1_1CBlockMemoryr0" doxytag="NLMISC::CBlockMemory::_Blocks" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> std::list<<a class="el" href="a02275.html">CBlock</a>> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr0">_Blocks</a><code> [private]</code>
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list of blocks.
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Definition at line <a class="el" href="a05490.html#l00256">256</a> of file <a class="el" href="a05490.html">block_memory.h</a>. </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryr1" doxytag="NLMISC::CBlockMemory::_BlockSize" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a15">uint</a> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr1">_BlockSize</a><code> [private]</code>
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size of a block.
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Definition at line <a class="el" href="a05490.html#l00237">237</a> of file <a class="el" href="a05490.html">block_memory.h</a>.
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Referenced by <a class="el" href="a05490.html#l00079">NLMISC::CBlockMemory< CNode >::CBlockMemory()</a>. </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryr2" doxytag="NLMISC::CBlockMemory::_EltSize" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a15">uint</a> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr2">_EltSize</a><code> [private]</code>
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size of an element in the block.
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Definition at line <a class="el" href="a05490.html#l00239">239</a> of file <a class="el" href="a05490.html">block_memory.h</a>. </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryr3" doxytag="NLMISC::CBlockMemory::_Mutex" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> <a class="el" href="a02516.html">CFastMutex</a> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr3">_Mutex</a><code> [private]</code>
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<p>
Must be ThreadSafe (eg: important for 3D PointLight and list of transform).
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Definition at line <a class="el" href="a05490.html#l00245">245</a> of file <a class="el" href="a05490.html">block_memory.h</a>. </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryr4" doxytag="NLMISC::CBlockMemory::_NAllocatedElts" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> <a class="el" href="a04558.html#a14">sint</a> <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr4">_NAllocatedElts</a><code> [private]</code>
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number of elements allocated.
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Definition at line <a class="el" href="a05490.html#l00241">241</a> of file <a class="el" href="a05490.html">block_memory.h</a>. </td>
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<a class="anchor" name="NLMISC_1_1CBlockMemoryr5" doxytag="NLMISC::CBlockMemory::_NextFreeElt" ></a><p>
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template<class T, bool __ctor_dtor__ = true> </td>
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<td class="md" nowrap valign="top"> void* <a class="el" href="a02274.html">NLMISC::CBlockMemory</a>< T, __ctor_dtor__ >::<a class="el" href="a02274.html#NLMISC_1_1CBlockMemoryr5">_NextFreeElt</a><code> [private]</code>
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next free element.
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Definition at line <a class="el" href="a05490.html#l00243">243</a> of file <a class="el" href="a05490.html">block_memory.h</a>. </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="a05490.html">block_memory.h</a></ul>
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