move calloc to its own file

Author: richfelker

Makefile

@@ -1,6 +1,6 @@
 
 ALL = libmallocng.a libmallocng.so
-SRCS = malloc.c free.c realloc.c aligned_alloc.c posix_memalign.c memalign.c malloc_usable_size.c dump.c
+SRCS = malloc.c calloc.c free.c realloc.c aligned_alloc.c posix_memalign.c memalign.c malloc_usable_size.c dump.c
 OBJS = $(SRCS:.c=.o)
 CFLAGS = -fPIC -Wall -O2 -ffreestanding
 

calloc.c

@@ -0,0 +1,16 @@
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "meta.h"
+
+void *calloc(size_t m, size_t n)
+{
+	if (n && m > (size_t)-1/n) {
+		errno = ENOMEM;
+		return 0;
+	}
+	n *= m;
+	void *p = malloc(n);
+	if (!p) return p;
+	return n >= MMAP_THRESHOLD ? p : memset(p, 0, n);
+}

malloc.c

@@ -378,15 +378,3 @@ void *malloc(size_t n)
 	unlock();
 	return enframe(g, idx, n, ctr);
 }
-
-void *calloc(size_t m, size_t n)
-{
-	if (n && m > (size_t)-1/n) {
-		errno = ENOMEM;
-		return 0;
-	}
-	n *= m;
-	void *p = malloc(n);
-	if (!p) return p;
-	return n >= MMAP_THRESHOLD ? p : memset(p, 0, n);
-}