Initialer Commit

CPP/Common/NewHandler.h

@@ -0,0 +1,69 @@
+// Common/NewHandler.h
+
+#ifndef __COMMON_NEW_HANDLER_H
+#define __COMMON_NEW_HANDLER_H
+
+/*
+This file must be included before any code that uses operators "delete" or "new".
+Also you must compile and link "NewHandler.cpp", if you use MSVC 6.0.
+The operator "new" in MSVC 6.0 doesn't throw exception "bad_alloc".
+So we define another version of operator "new" that throws "CNewException" on failure.
+
+If you use compiler that throws exception in "new" operator (GCC or new version of MSVC),
+you can compile without "NewHandler.cpp". So standard exception "bad_alloc" will be used.
+
+It's still allowed to use redefined version of operator "new" from "NewHandler.cpp"
+with any compiler. 7-Zip's code can work with "bad_alloc" and "CNewException" exceptions.
+But if you use some additional code (outside of 7-Zip's code), you must check
+that redefined version of operator "new" (that throws CNewException) is not
+problem for your code.
+
+Also we declare delete(void *p) throw() that creates smaller code.
+*/
+
+#include <stddef.h>
+
+class CNewException {};
+
+#ifdef WIN32
+// We can compile my_new and my_delete with _fastcall
+/*
+void * my_new(size_t size);
+void my_delete(void *p) throw();
+// void * my_Realloc(void *p, size_t newSize, size_t oldSize);
+*/
+#endif
+
+#ifdef _WIN32
+
+void *
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator new(size_t size);
+
+void
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator delete(void *p) throw();
+
+#endif
+
+/*
+#ifdef _WIN32
+void *
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator new[](size_t size);
+
+void
+#ifdef _MSC_VER
+__cdecl
+#endif
+operator delete[](void *p) throw();
+#endif
+*/
+
+#endif