[Xen-changelog] [xen-unstable] libxl: expand the libxl_bitmap API a bit

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Dario Faggioli <raistlin@xxxxxxxx>
# Date 1341577063 -3600
# Node ID 61742ab1a675618c963e0f4d10950bf87cc5a57a
# Parent  86c5dcbd03e6da6408666820d3b17a282a82c057
libxl: expand the libxl_bitmap API a bit

By adding copying and *_is_full/*_is_empty facilities.

Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Committed-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---


diff -r 86c5dcbd03e6 -r 61742ab1a675 tools/libxl/libxl_utils.c
--- a/tools/libxl/libxl_utils.c Fri Jul 06 13:17:42 2012 +0100
+++ b/tools/libxl/libxl_utils.c Fri Jul 06 13:17:43 2012 +0100
@@ -510,6 +510,36 @@ void libxl_bitmap_dispose(libxl_bitmap *
     free(map->map);
 }
 
+void libxl_bitmap_copy(libxl_ctx *ctx, libxl_bitmap *dptr,
+                       const libxl_bitmap *sptr)
+{
+    int sz;
+
+    assert(dptr->size == sptr->size);
+    sz = dptr->size = sptr->size;
+    memcpy(dptr->map, sptr->map, sz * sizeof(*dptr->map));
+}
+
+int libxl_bitmap_is_full(const libxl_bitmap *bitmap)
+{
+    int i;
+
+    for (i = 0; i < bitmap->size; i++)
+        if (bitmap->map[i] != (uint8_t)-1)
+            return 0;
+   return 1;
+}
+
+int libxl_bitmap_is_empty(const libxl_bitmap *bitmap)
+{
+    int i;
+
+    for (i = 0; i < bitmap->size; i++)
+        if (bitmap->map[i])
+            return 0;
+    return 1;
+}
+
 int libxl_bitmap_test(const libxl_bitmap *bitmap, int bit)
 {
     if (bit >= bitmap->size * 8)
diff -r 86c5dcbd03e6 -r 61742ab1a675 tools/libxl/libxl_utils.h
--- a/tools/libxl/libxl_utils.h Fri Jul 06 13:17:42 2012 +0100
+++ b/tools/libxl/libxl_utils.h Fri Jul 06 13:17:43 2012 +0100
@@ -66,6 +66,10 @@ int libxl_vdev_to_device_disk(libxl_ctx 
 int libxl_bitmap_alloc(libxl_ctx *ctx, libxl_bitmap *bitmap, int n_bits);
     /* Allocated bimap is from malloc, libxl_bitmap_dispose() to be
      * called by the application when done. */
+void libxl_bitmap_copy(libxl_ctx *ctx, libxl_bitmap *dptr,
+                       const libxl_bitmap *sptr);
+int libxl_bitmap_is_full(const libxl_bitmap *bitmap);
+int libxl_bitmap_is_empty(const libxl_bitmap *bitmap);
 int libxl_bitmap_test(const libxl_bitmap *bitmap, int bit);
 void libxl_bitmap_set(libxl_bitmap *bitmap, int bit);
 void libxl_bitmap_reset(libxl_bitmap *bitmap, int bit);

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