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Diffstat (limited to 'src/malloc')
-rw-r--r--src/malloc/calloc.c37
-rw-r--r--src/malloc/lite_malloc.c11
-rw-r--r--src/malloc/oldmalloc/malloc.c36
3 files changed, 37 insertions, 47 deletions
diff --git a/src/malloc/calloc.c b/src/malloc/calloc.c
new file mode 100644
index 00000000..322193ca
--- /dev/null
+++ b/src/malloc/calloc.c
@@ -0,0 +1,37 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+
+static size_t mal0_clear(char *p, size_t n)
+{
+ const size_t pagesz = 4096; /* arbitrary */
+ if (n < pagesz) return n;
+#ifdef __GNUC__
+ typedef uint64_t __attribute__((__may_alias__)) T;
+#else
+ typedef unsigned char T;
+#endif
+ char *pp = p + n;
+ size_t i = (uintptr_t)pp & (pagesz - 1);
+ for (;;) {
+ pp = memset(pp - i, 0, i);
+ if (pp - p < pagesz) return pp - p;
+ for (i = pagesz; i; i -= 2*sizeof(T), pp -= 2*sizeof(T))
+ if (((T *)pp)[-1] | ((T *)pp)[-2])
+ break;
+ }
+}
+
+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;
+ n = mal0_clear(p, n);
+ return memset(p, 0, n);
+}
diff --git a/src/malloc/lite_malloc.c b/src/malloc/lite_malloc.c
index c3f0c129..f8931ba5 100644
--- a/src/malloc/lite_malloc.c
+++ b/src/malloc/lite_malloc.c
@@ -101,14 +101,3 @@ static void *__simple_malloc(size_t n)
}
weak_alias(__simple_malloc, malloc);
-
-static void *__simple_calloc(size_t m, size_t n)
-{
- if (n && m > (size_t)-1/n) {
- errno = ENOMEM;
- return 0;
- }
- return __simple_malloc(n * m);
-}
-
-weak_alias(__simple_calloc, calloc);
diff --git a/src/malloc/oldmalloc/malloc.c b/src/malloc/oldmalloc/malloc.c
index df3ea1be..afa75722 100644
--- a/src/malloc/oldmalloc/malloc.c
+++ b/src/malloc/oldmalloc/malloc.c
@@ -341,42 +341,6 @@ void *malloc(size_t n)
return CHUNK_TO_MEM(c);
}
-static size_t mal0_clear(char *p, size_t pagesz, size_t n)
-{
-#ifdef __GNUC__
- typedef uint64_t __attribute__((__may_alias__)) T;
-#else
- typedef unsigned char T;
-#endif
- char *pp = p + n;
- size_t i = (uintptr_t)pp & (pagesz - 1);
- for (;;) {
- pp = memset(pp - i, 0, i);
- if (pp - p < pagesz) return pp - p;
- for (i = pagesz; i; i -= 2*sizeof(T), pp -= 2*sizeof(T))
- if (((T *)pp)[-1] | ((T *)pp)[-2])
- break;
- }
-}
-
-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;
- if (!__malloc_replaced) {
- if (IS_MMAPPED(MEM_TO_CHUNK(p)))
- return p;
- if (n >= PAGE_SIZE)
- n = mal0_clear(p, PAGE_SIZE, n);
- }
- return memset(p, 0, n);
-}
-
void *realloc(void *p, size_t n)
{
struct chunk *self, *next;