tools/libxl: Introduce libxl__malloc()

For those large allocations which are going to be filled immediately, where
redundantly clearing the memory would just be a waste of time.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
CC: Ian Jackson <Ian.Jackson@eu.citrix.com>

diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index 6c105decbe85a3e4246768ec85746ca0f88a0527..6c94d3ed290d211000ee58966015e0fa00ed7c1d 100644 (file)
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -78,6 +78,15 @@ void libxl__free_all(libxl__gc *gc)
     gc->alloc_maxsize = 0;
 }
 
+void *libxl__malloc(libxl__gc *gc, size_t size)
+{
+    void *ptr = malloc(size);
+    if (!ptr) libxl__alloc_failed(CTX, __func__, size, 1);
+
+    libxl__ptr_add(gc, ptr);
+    return ptr;
+}
+
 void *libxl__zalloc(libxl__gc *gc, size_t size)
 {
     void *ptr = calloc(size, 1);

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index be325bbcfeb03a0045f7261f2002cfff39645887..c2b73c405b8eadd5da6f89a3abeeb985b3d2677e 100644 (file)
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -504,6 +504,8 @@ static inline int libxl__gc_is_real(const libxl__gc *gc)
 _hidden void libxl__ptr_add(libxl__gc *gc_opt, void *ptr /* may be NULL */) NN1;
 /* if this is the outermost libxl callframe then free all pointers in @gc */
 _hidden void libxl__free_all(libxl__gc *gc);
+/* allocate @size bytes. (a gc'd malloc(3)) */
+_hidden void *libxl__malloc(libxl__gc *gc_opt, size_t size) NN1;
 /* allocate and zero @size. (similar to a gc'd malloc(3)+memzero()) */
 _hidden void *libxl__zalloc(libxl__gc *gc_opt, size_t size) NN1;
 /* allocate and zero memory for an array of @nmemb members of @size each.