[Qemu-devel] [PATCH RFC 5/7] cpu: Introduce cpu_class_foreach()

["Andreas Färber" <afaerber@suse.de>]

Provides an easy way to loop over all non-abstract CPU classes.

Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/cpu.c           |   25 +++++++++++++++++++++++++
 include/qemu/cpu.h |    9 +++++++++
 2 files changed, 34 insertions(+), 0 deletions(-)

diff --git a/hw/cpu.c b/hw/cpu.c
index c0e9cfa..ac0add7 100644
--- a/hw/cpu.c
+++ b/hw/cpu.c
@@ -11,6 +11,31 @@
 #include "qemu/cpu.h"
 #include "qemu-common.h"
 
+struct CPUListData {
+    void (*fn)(ObjectClass *klass, void *opaque);
+    void *opaque;
+};
+
+static void cpu_class_foreach_tramp(ObjectClass *klass, void *opaque)
+{
+    struct CPUListData *s = opaque;
+
+    if (!object_class_is_abstract(klass) &&
+        object_class_dynamic_cast(klass, TYPE_CPU) != NULL) {
+        s->fn(klass, s->opaque);
+    }
+}
+
+void cpu_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
+                       void *opaque)
+{
+    struct CPUListData s = {
+        .fn = fn,
+        .opaque = opaque,
+    };
+    object_class_foreach(cpu_class_foreach_tramp, &s);
+}
+
 static TypeInfo cpu_type_info = {
     .name = TYPE_CPU,
     .parent = TYPE_OBJECT,
diff --git a/include/qemu/cpu.h b/include/qemu/cpu.h
index 4b81f3b..d06c87e 100644
--- a/include/qemu/cpu.h
+++ b/include/qemu/cpu.h
@@ -24,4 +24,13 @@ typedef struct CPU {
 } CPU;
 
 
+/**
+ * cpu_class_foreach:
+ * @fn: Callback function called for each non-abstract CPU type.
+ * @opaque: Opaque data passed through to the callback function.
+ */
+void cpu_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
+                       void *opaque);
+
+
 #endif
-- 
1.7.7