libxl: Introduce libxl__realloc.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index 8f4678020f37af4d5c6c90de7ef78185a2f43acb..ef5f6ae5dbf10be63c1bed94225bee4ef6a4880c 100644 (file)
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -102,6 +102,30 @@ void *libxl__calloc(libxl__gc *gc, size_t nmemb, size_t size)
     return ptr;
 }
 
+void *libxl__realloc(libxl__gc *gc, void *ptr, size_t new_size)
+{
+    void *new_ptr = realloc(ptr, new_size);
+    int i = 0;
+
+    if (new_ptr == NULL && new_size != 0) {
+        return NULL;
+    }
+
+    if (ptr == NULL) {
+        libxl__ptr_add(gc, new_ptr);
+    } else if (new_ptr != ptr) {
+        for (i = 0; i < gc->alloc_maxsize; i++) {
+            if (gc->alloc_ptrs[i] == ptr) {
+                gc->alloc_ptrs[i] = new_ptr;
+                break;
+            }
+        }
+    }
+
+
+    return new_ptr;
+}
+
 char *libxl__sprintf(libxl__gc *gc, const char *fmt, ...)
 {
     char *s;

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index b0367661b5a428f6947df7592a093fdf35f5f97b..1d2c58ecbe606c74bdcbfc508d230caf16c1c77c 100644 (file)
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -145,6 +145,7 @@ _hidden int libxl__ptr_add(libxl__gc *gc, void *ptr);
 _hidden void libxl__free_all(libxl__gc *gc);
 _hidden void *libxl__zalloc(libxl__gc *gc, int bytes);
 _hidden void *libxl__calloc(libxl__gc *gc, size_t nmemb, size_t size);
+_hidden void *libxl__realloc(libxl__gc *gc, void *ptr, size_t new_size);
 _hidden char *libxl__sprintf(libxl__gc *gc, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3);
 _hidden char *libxl__strdup(libxl__gc *gc, const char *c);
 _hidden char *libxl__dirname(libxl__gc *gc, const char *s);