first commit

Version 3.x.x

core/invariant/precompiled.cc

@@ -0,0 +1,92 @@
+#include "precompiled.h"
+
+#ifdef CHECKED
+const int PATTERN = 0xAA;
+void *mynew(size_t s) 
+{
+	uint8_t *ptr = (uint8_t *)malloc(s + 8);
+	if(ptr)
+	{
+		memset(ptr, PATTERN, s + 8);
+		return ptr + 4;
+	} else
+	{
+		abort();
+	}
+	return NULL;
+}
+
+void *operator new(size_t s) //throw(std::bad_alloc)
+{
+	return mynew(s);
+}
+
+void *operator new[](std::size_t s) //throw(std::bad_alloc)
+{
+	return mynew(s);
+}
+
+void *operator new(size_t s, const std::nothrow_t &) throw() 
+{
+	return mynew(s);
+}
+
+void *operator new[](size_t s, const std::nothrow_t &) throw() 
+{
+	return mynew(s);
+}
+
+void mydelete(void *p)
+{
+	if(p)
+	{
+		uint8_t *realp = (uint8_t *)p - 4;
+#ifdef VMP_GNU
+		size_t s =  malloc_usable_size(realp);
+#else
+		size_t s = _msize(realp);
+#endif
+		uint8_t *endp = realp + s;
+		for(int i = 0; i < 4; i++)
+		{
+			bool needAbort = false;
+			if(realp[i] != PATTERN)
+			{
+				std::cout << "Heap underflow at " << p << std::endl;
+				needAbort = true;
+			}
+			if(*--endp != PATTERN)
+			{
+				std::cout << "Heap overflow at " << p << std::endl;
+				needAbort = true;
+			}
+			if(needAbort)
+			{
+				abort();
+			}
+		}
+		memset(realp, 0x55, s);
+		free(realp);
+	}
+
+}
+void operator delete(void *p) throw()
+{
+	mydelete(p);
+}
+void operator delete[](void *p) throw()
+{
+	mydelete(p);
+}
+
+void operator delete[](void *p, const std::nothrow_t &) throw() 
+{
+	mydelete(p);
+}
+
+void operator delete(void *p, const std::nothrow_t &) throw() 
+{
+	mydelete(p);
+}
+
+#endif