moving src/common to src/

src/xalloc.c

@@ -0,0 +1,96 @@
+/* xalloc.c
+ *
+ *   Copyright (C) 2010   Henrik Hautakoski <henrik@fiktivkod.org>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "util.h"
+#include "xalloc.h"
+
+#define CHECK(expr) \
+    if (!(expr)) \
+        goto bail
+
+#define CHECK_SET_ERRNO(expr, no) \
+    if (!(expr)) { \
+        errno = no; \
+        goto bail; \
+    }
+
+#ifdef __DEBUG__
+# define CHECK_INPUT(s) CHECK_SET_ERRNO(s, EINVAL)
+#else
+# define CHECK_INPUT(s)
+#endif
+
+void* xmalloc(size_t size) {
+
+    CHECK_INPUT(size);
+
+    void *ptr = malloc(size);
+    CHECK(ptr);
+    return ptr;
+bail:
+    die_errno("xmalloc");
+}
+
+void* xmallocz(size_t size) {
+
+    CHECK_INPUT(size);
+
+    void *ptr = malloc(size);
+    CHECK(ptr);
+    memset(ptr, 0, size);
+    return ptr;
+bail:
+    die_errno("xmallocz");
+}
+
+void* xrealloc(void *ptr, size_t size) {
+
+    CHECK_INPUT(size);
+    
+    ptr = realloc(ptr, size);
+    CHECK(ptr);
+    return ptr;
+bail:
+    die_errno("xrealloc");
+}
+
+char* xstrdup(const char *s) {
+
+    CHECK_INPUT(s);
+
+    char *c = strdup(s);
+    CHECK(c);
+    return c;
+bail:
+    die_errno("xstrdup");
+}
+
+void* xmemdup(const void *src, size_t size) {
+
+    CHECK_INPUT(src);
+
+    void *dest = xmalloc(size);
+    memcpy(dest, src, size);
+    return dest;
+bail:
+    die_errno("xmemdup");
+}
+
+void xfree(void *ptr) {
+
+    CHECK_INPUT(ptr);
+    free(ptr);
+    return;
+bail:
+    die_errno("xfree");
+}