libqos: Add malloc generic

This malloc is a basic interface implementation that works for any platform.
It should be replaced in the future for a real malloc implementation for each
of the platforms.

Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1424812915-25728-5-git-send-email-marc.mari.barcelo@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

tests/libqos/malloc-generic.c

@@ -0,0 +1,39 @@
+/*
+ * Basic libqos generic malloc support
+ *
+ * Copyright (c) 2014 Marc Marí
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <glib.h>
+#include "libqos/malloc-generic.h"
+#include "libqos/malloc.h"
+
+/*
+ * Mostly for valgrind happiness, but it does offer
+ * a chokepoint for debugging guest memory leaks, too.
+ */
+void generic_alloc_uninit(QGuestAllocator *allocator)
+{
+    alloc_uninit(allocator);
+}
+
+QGuestAllocator *generic_alloc_init_flags(uint64_t base_addr, uint64_t size,
+                                        uint32_t page_size, QAllocOpts flags)
+{
+    QGuestAllocator *s;
+    uint64_t start = base_addr + (1 << 20); /* Start at 1MB */
+
+    s = alloc_init_flags(flags, start, start + size);
+    alloc_set_page_size(s, page_size);
+
+    return s;
+}
+
+inline QGuestAllocator *generic_alloc_init(uint64_t base_addr, uint64_t size,
+                                                            uint32_t page_size)
+{
+    return generic_alloc_init_flags(base_addr, size, page_size, ALLOC_NO_FLAGS);
+}

tests/libqos/malloc-generic.h

@@ -0,0 +1,21 @@
+/*
+ * Basic libqos generic malloc support
+ *
+ * Copyright (c) 2014 Marc Marí
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef LIBQOS_MALLOC_GENERIC_H
+#define LIBQOS_MALLOC_GENERIC_H
+
+#include "libqos/malloc.h"
+
+QGuestAllocator *generic_alloc_init(uint64_t base_addr, uint64_t size,
+                                                            uint32_t page_size);
+QGuestAllocator *generic_alloc_init_flags(uint64_t base_addr, uint64_t size,
+                                        uint32_t page_size, QAllocOpts flags);
+void generic_alloc_uninit(QGuestAllocator *allocator);
+
+#endif