AllocateFromAssimpHeap: add overload for nothrow-new.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@666 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/Importer.cpp

@@ -45,19 +45,20 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "AssimpPCH.h"
 
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
 /* Uncomment this line to prevent Assimp from catching unknown exceptions.
  *
- * Note that any Exception except ImportErrorException may lead to 
+ * Note that any Exception except DeadlyImportError may lead to 
  * undefined behaviour -> loaders could remain in an unusable state and
  * further imports with the same Importer instance could fail/crash/burn ...
  */
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
 #define ASSIMP_CATCH_GLOBAL_EXCEPTIONS
 
-// .......................................................................................
+
+// ------------------------------------------------------------------------------------------------
 // Internal headers
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
 #include "BaseImporter.h"
 #include "BaseProcess.h"
 #include "DefaultIOStream.h"
@@ -67,10 +68,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "ScenePreprocessor.h"
 #include "MemoryIOWrapper.h"
 
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
 // Importers
 // (include_new_importers_here)
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
 #ifndef AI_BUILD_NO_X_IMPORTER
 #	include "XFileImporter.h"
 #endif
@@ -168,9 +169,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #	include "COBLoader.h"
 #endif
 
-// .......................................................................................
-// PostProcess-Steps
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
+// Post processing-Steps
+// ------------------------------------------------------------------------------------------------
 #ifndef AI_BUILD_NO_CALCTANGENTS_PROCESS
 #	include "CalcTangentsProcess.h"
 #endif
@@ -241,15 +242,25 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 using namespace Assimp;
 using namespace Assimp::Intern;
 
-// .......................................................................................
+// ------------------------------------------------------------------------------------------------
 // Intern::AllocateFromAssimpHeap serves as abstract base class. It overrides
 // new and delete (and their array counterparts) of public API classes (e.g. Logger) to
-// utilize our DLL heap
-// .......................................................................................
+// utilize our DLL heap.
+// See http://www.gotw.ca/publications/mill15.htm
+// ------------------------------------------------------------------------------------------------
 void* AllocateFromAssimpHeap::operator new ( size_t num_bytes)	{
 	return ::operator new(num_bytes);
 }
 
+void* AllocateFromAssimpHeap::operator new ( size_t num_bytes, const std::nothrow_t& )	{
+	try	{
+		return AllocateFromAssimpHeap::operator new( num_bytes );
+	}
+	catch( ... )	{
+		return NULL;
+	}
+}
+
 void AllocateFromAssimpHeap::operator delete ( void* data)	{
 	return ::operator delete(data);
 }
@@ -258,6 +269,15 @@ void* AllocateFromAssimpHeap::operator new[] ( size_t num_bytes)	{
 	return ::operator new[](num_bytes);
 }
 
+void* AllocateFromAssimpHeap::operator new[] ( size_t num_bytes, const std::nothrow_t& )	{
+	try	{
+		return AllocateFromAssimpHeap::operator new[]( num_bytes );
+	}
+	catch( ... )	{
+		return NULL;
+	}
+}
+
 void AllocateFromAssimpHeap::operator delete[] ( void* data)	{
 	return ::operator delete[](data);
 }

include/aiTypes.h

@@ -63,10 +63,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "aiQuaternion.h"
 
 #ifdef __cplusplus
+#include <new>		// for std::nothrow_t
 #include <string>	// for aiString::Set(const std::string&)
 
 namespace Assimp	{
-
 	//! @cond never
 namespace Intern		{
 	// --------------------------------------------------------------------
@@ -83,13 +83,16 @@ namespace Intern		{
 	 */
 	// --------------------------------------------------------------------
 	struct ASSIMP_API AllocateFromAssimpHeap	{
+		// http://www.gotw.ca/publications/mill15.htm
 
 		// new/delete overload
-		void *operator new    ( size_t num_bytes);
+		void *operator new    ( size_t num_bytes) /* throw( std::bad_alloc ) */;
+		void *operator new    ( size_t num_bytes, const std::nothrow_t& ) throw();
 		void  operator delete ( void* data);
 
 		// array new/delete overload
-		void *operator new[]    ( size_t num_bytes);
+		void *operator new[]    ( size_t num_bytes) /* throw( std::bad_alloc ) */;
+		void *operator new[]    ( size_t num_bytes, const std::nothrow_t& )  throw();
 		void  operator delete[] ( void* data);
 
 	}; // struct AllocateFromAssimpHeap