Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/lib/crt/stdlib/malloc.c

@@ -0,0 +1,158 @@
+/*
+ * msvcrt.dll heap functions
+ *
+ * Copyright 2000 Jon Griffiths
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Note: Win32 heap operations are MT safe. We only lock the new
+ *       handler and non atomic heap operations
+ */
+
+#include <precomp.h>
+#include <stdlib.h>
+#include <malloc.h>
+
+#define ROUND_DOWN(n, align) \
+    (((ULONG)n) & ~((align) - 1l))
+
+#define ROUND_UP(n, align) \
+    ROUND_DOWN(((ULONG)n) + (align) - 1, (align))
+
+/* round to 16 bytes + alloc at minimum 16 bytes */
+#define ROUND_SIZE(size) (max(16, ROUND_UP(size, 16)))
+
+/*
+ * @implemented
+ */
+void* malloc(size_t _size)
+{
+   size_t nSize = ROUND_SIZE(_size);
+
+   if (nSize<_size)
+       return NULL;
+
+   return HeapAlloc(GetProcessHeap(), 0, nSize);
+}
+
+/*
+ * @implemented
+ */
+void free(void* _ptr)
+{
+   HeapFree(GetProcessHeap(),0,_ptr);
+}
+
+/*
+ * @implemented
+ */
+void* calloc(size_t _nmemb, size_t _size)
+{
+   size_t nSize = _nmemb * _size;
+   size_t cSize = ROUND_SIZE(nSize);
+
+   if ( (_nmemb > ((size_t)-1 / _size))  || (cSize<nSize))
+      return NULL;
+
+   return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cSize );
+}
+
+/*
+ * @implemented
+ */
+void* realloc(void* _ptr, size_t _size)
+{
+   size_t nSize;
+
+   if (_ptr == NULL)
+      return malloc(_size);
+
+   if (_size == 0)
+   {
+   	   free(_ptr);
+       return NULL;
+   }
+
+   nSize = ROUND_SIZE(_size);
+
+   /* check for integer overflow */
+   if (nSize<_size)
+       return NULL;
+
+   return HeapReAlloc(GetProcessHeap(), 0, _ptr, nSize);
+}
+
+/*
+ * @implemented
+ */
+void* _expand(void* _ptr, size_t _size)
+{
+   size_t nSize;
+
+   nSize = ROUND_SIZE(_size);
+
+   if (nSize<_size)
+       return NULL;
+
+   return HeapReAlloc(GetProcessHeap(), HEAP_REALLOC_IN_PLACE_ONLY, _ptr, nSize);
+}
+
+/*
+ * @implemented
+ */
+size_t _msize(void* _ptr)
+{
+   return HeapSize(GetProcessHeap(), 0, _ptr);
+}
+
+/*
+ * @implemented
+ */
+int	_heapchk(void)
+{
+	if (!HeapValidate(GetProcessHeap(), 0, NULL))
+		return -1;
+	return 0;
+}
+
+/*
+ * @implemented
+ */
+int	_heapmin(void)
+{
+	if (!HeapCompact(GetProcessHeap(), 0))
+		return -1;
+	return 0;
+}
+
+/*
+ * @implemented
+ */
+int	_heapset(unsigned int unFill)
+{
+	if (_heapchk() == -1)
+		return -1;
+	return 0;
+
+}
+
+/*
+ * @implemented
+ */
+int _heapwalk(struct _heapinfo* entry)
+{
+	return 0;
+}
+