tabs and tab overview

xmalloc.c

@@ -0,0 +1,96 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "xmalloc.h"
+#include "debug.h"
+
+static void *
+check_alloc(void *alloc)
+{
+    if (unlikely(alloc == NULL)) {
+        FATAL_ERROR(__func__, ENOMEM);
+    }
+    return alloc;
+}
+
+void *
+xmalloc(size_t size)
+{
+    if (unlikely(size == 0)) {
+        size = 1;
+    }
+    return check_alloc(malloc(size));
+}
+
+void *
+xcalloc(size_t nmemb, size_t size)
+{
+    xassert(size != 0);
+    return check_alloc(calloc(likely(nmemb) ? nmemb : 1, size));
+}
+
+void *
+xrealloc(void *ptr, size_t size)
+{
+    xassert(size != 0);
+    void *alloc = realloc(ptr, size);
+    return check_alloc(alloc);
+}
+
+void *
+xreallocarray(void *ptr, size_t n, size_t size)
+{
+    xassert(n != 0 && size != 0);
+    void *alloc = reallocarray(ptr, n, size);
+    return check_alloc(alloc);
+}
+
+char *
+xstrdup(const char *str)
+{
+    return check_alloc(strdup(str));
+}
+
+char *
+xstrndup(const char *str, size_t n)
+{
+    return check_alloc(strndup(str, n));
+}
+
+char32_t *
+xc32dup(const char32_t *str)
+{
+    return check_alloc(c32dup(str));
+}
+
+static VPRINTF(2) int
+xvasprintf_(char **strp, const char *format, va_list ap)
+{
+    va_list ap2;
+    va_copy(ap2, ap);
+    int n = vsnprintf(NULL, 0, format, ap2);
+    if (unlikely(n < 0)) {
+        FATAL_ERROR("vsnprintf", EILSEQ);
+    }
+    va_end(ap2);
+    *strp = xmalloc(n + 1);
+    return vsnprintf(*strp, n + 1, format, ap);
+}
+
+char *
+xvasprintf(const char *format, va_list ap)
+{
+    char *str;
+    xvasprintf_(&str, format, ap);
+    return str;
+}
+
+char *
+xasprintf(const char *format, ...)
+{
+    va_list ap;
+    va_start(ap, format);
+    char *str = xvasprintf(format, ap);
+    va_end(ap);
+    return str;
+}