Move safe memory helper functions to dedicated memory.c and memory.h

cmdline/memory.h

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (C) 2011 Andrea Mazzoleni
+
+#ifndef __MEMORY_H
+#define __MEMORY_H
+
+/****************************************************************************/
+/* memory */
+
+/**
+ * Return the size of the cumulative allocated memory.
+ */
+size_t malloc_counter_get(void);
+
+/**
+ * Safe malloc.
+ * If no memory is available, it aborts.
+ */
+void* malloc_nofail(size_t size);
+
+/**
+ * Safe malloc with calloc calling arguments.
+ * If no memory is available, it aborts.
+ */
+void* nalloc_nofail(size_t count, size_t size);
+
+/**
+ * Safe calloc.
+ * If no memory is available, it aborts.
+ */
+void* calloc_nofail(size_t count, size_t size);
+
+/**
+ * Safe strdup.
+ * If no memory is available, it aborts.
+ */
+char* strdup_nofail(const char* str);
+
+/**
+ * Helper for printing an error about a failed allocation.
+ */
+void malloc_fail(size_t size);
+
+#endif
+