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2013-02-21qom/object.c: Allow itf cast with num_itfs = 0Peter Crosthwaite
num_interfaces only tells you how many interfaces the concrete child class has (as defined in the TypeInfo). This means if you have a child class which defines no interfaces of its own, but its parent has interfaces you cannot cast to those parent interfaces. Fixed changing the guard to check the class->interfaces list instead (which is a complete flattened list of implemented interfaces). Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: a8c2db3b9b1f3c4bb81aca352b69e33260f36545.1361246206.git.peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-21qom/object.c: Reset interface list on inheritancePeter Crosthwaite
The QOM framework will attempt the recreate a classes interface list from scratch for each class. This means that a child class should zero out the list of interfaces when cloned from the parent class. Currently the list is memcpy()d from the parent to the child. As the interface list is just a pointer to a list, this means the parent and child will share the same list of interfaces. When the child inits, it will append its own interfaces to the parents list. This is incorrect as the parent should not pick up its childs interfaces. This actually causes an infinite loop at class init time, as the child will iterate through the parent interface list adding each itf to its own list(in type_initialize()). As the list is (erroneously) shared, the new interface instances for the child are appended to the parent, and the iterator never hits the tail and loops forever. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1f58d2b629d82865dbb2fd5ba8445854049c4382.1361246206.git.peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-16cpu: Move current_tb field to CPUStateAndreas Färber
Explictly NULL it on CPU reset since it was located before breakpoints. Change vapic_report_tpr_access() argument to CPUState. This also resolves the use of void* for cpu.h independence. Change vAPIC patch_instruction() argument to X86CPU. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Move exit_request field to CPUStateAndreas Färber
Since it was located before breakpoints field, it needs to be reset. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Prepare QOM realizefnAndreas Färber
Overwrite the default implementation with a no-op, no longer attempting to call DeviceClass::init. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-01qom: remove object_deletePaolo Bonzini
This is now unused. Document the initial reference count of an object and when it will be freed/finalized. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-01qom: preserve object while unparenting itPaolo Bonzini
Avoid that the object disappears after it's deleted from the QOM composition tree, in case that was the only reference to it. Acked-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-27qom: Introduce object_class_is_abstract()Andreas Färber
This lets a caller check if an ObjectClass as returned by, e.g., object_class_by_name() is instantiatable. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <anthony@codemonkey.ws>
2013-01-27cpu: Add model resolution support to CPUClassAndreas Färber
Introduce CPUClass::class_by_name and add a default implementation. Hook up the alpha and ppc implementations. Introduce a wrapper function cpu_class_by_name(). Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-26build: remove universal-obj-yPaolo Bonzini
All of universal-obj-y, user-obj-y (right now unused) and common-obj-y can be unified into common-obj-y if we take care of defining CONFIG_SOFTMMU and CONFIG_USER_ONLY in the toplevel makefile. This is similar to how we define symbols for hardware components. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-15qom: Make object_resolve_path_component() path argument constAndreas Färber
A usage with a hardcoded partial path such as object_resolve_path_component(obj, "foo") is totally valid but currently leads to a compilation error. Fix this. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-12build: consolidate multiple variables into universal-obj-yPaolo Bonzini
The directory descent mechanism, and a less-flat tree both helped in making some *-obj-y definitions very short. Many of these often end up in universal-obj-y, and used to be separate only because of libuser (which is now part of history...). Consolidate these variables in a single one. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-10Make all static TypeInfos constAndreas Färber
Since 39bffca2030950ef6efe57c2fac8327a45ae1015 (qdev: register all types natively through QEMU Object Model), TypeInfo as used in the common, non-iterative pattern is no longer amended with information and should therefore be const. Fix the documented QOM examples: sed -i 's/static TypeInfo/static const TypeInfo/g' include/qom/object.h Since frequently the wrong examples are being copied by contributors of new devices, fix all types in the tree: sed -i 's/^static TypeInfo/static const TypeInfo/g' */*.c sed -i 's/^static TypeInfo/static const TypeInfo/g' */*/*.c This also avoids to piggy-back these changes onto real functional changes or other refactorings. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-08cpu: Change parent type to DeviceEduardo Habkost
This finally makes the CPU class a subclass of the Device class, allowing us to start using DeviceState properties on CPU subclasses. It has no_user=1, as creating CPUs using -device doesn't work yet. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qom: move include files to include/qom/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qapi: move include files to include/qobject/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qapi: remove qapi/qapi-types-core.hPaolo Bonzini
The file is only including error.h and qerror.h. Prefer explicit inclusion of whatever files are needed. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-11-26qom: make object_finalize staticPaolo Bonzini
It is not used anymore, and there is no need to make it public. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qom: make object_delete usable for statically-allocated objectsPaolo Bonzini
Store in the object the freeing function that will be used at deletion time. This makes it possible to use object_delete on statically-allocated (embedded) objects. Dually, it makes it possible to use object_unparent and object_unref without leaking memory, when the lifetime of object might extend until after the call to object_delete. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qdev: move bus removal to object_unparentPaolo Bonzini
Add an ObjectClass method that is done at object_unparent time. It should remove any backlinks to the object in the composition tree, so that object_delete will be able to drop the last reference and free the object. Use it for qdev buses. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qom: fix refcount of non-heap-allocated objectsPaolo Bonzini
The reference count for embedded objects is always one too low, because object_initialize_with_type returns with zero references to the object. This causes premature finalization of the object (or an assertion failure) after calling object_ref to add an extra reference and object_unref to remove it. The fix is to move the initial object_ref call from object_new_with_type to object_initialize_with_type. Acked-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-26qom: dynamic_cast of NULL is always NULLPaolo Bonzini
Trying to cast a NULL value will cause a crash. Returning NULL is also sensible, and it is also what the type-unsafe DO_UPCAST macro does. Reported-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-16object: add object_property_add_bool (v2)Anthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- v1 -> v2 - Fix whitespace (Andreas Faerber)
2012-08-23qom: object_delete should unparent the object firstPaolo Bonzini
object_deinit is only called when the reference count goes to zero, and yet tries to do an object_unparent. Now, object_unparent either does nothing or it will decrease the reference count. Because we know the reference count is zero, the object_unparent call in object_deinit is useless. Instead, we need to disconnect the object from its parent just before we remove the last reference apart from the parent's. This happens in object_delete. Once we do this, all calls to object_unparent peppered through QEMU can go away. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-08-13qom: Reimplement InterfacesAnthony Liguori
The current implementation of Interfaces is poorly designed. Each interface that an object implements ends up being an object that's tracked by the implementing object. There's all sorts of gymnastics to deal with casting between these objects. But an interface shouldn't be associated with an Object. Interfaces are global to a class. This patch moves all Interface knowledge to ObjectClass eliminating the relationship between Object and Interfaces. Interfaces are now abstract (as they should be) but this is okay. Interfaces essentially act as additional parents for the classes and are treated as such. With this new implementation, we should fully support derived interfaces including reimplementing an inherited interface. PC: Rebased against qom-next merge Jun-2012. PC: Removed replication of cast logic for interfaces, i.e. there is only one cast function - object_dynamic_cast() (and object_dynamic_cast_assert()) Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2012-06-18qom: Push error reporting to object_property_find()Paolo Bonzini
Avoids duplicated error_set(). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [AF: Also drop error_set() in object_property_del().] Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qdev: Remove qdev_prop_exists()Paolo Bonzini
Can be replaced everywhere with object_property_find(). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qbus: Make child devices linksAnthony Liguori
Make qbus children show up as link<> properties. There is no stable addressing for qbus children so we use an unstable naming convention. This is okay in QOM though because the composition name is expected to be what's stable. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qdev: Push "type" property up to ObjectPaolo Bonzini
Now that Object is a type, add an instance_init function and push the "type" property from qdev to there. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qom: Assert that public types have a non-NULL parent fieldPaolo Bonzini
This protects against unwanted effects of changing TYPE_OBJECT from NULL to a string. Suggested-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qom: Make Object a typePaolo Bonzini
Right now the base Object class has a special NULL type. Change this so that we will be able to add class_init and class_base_init callbacks. To do this, remove some special casing of ObjectClass that is not really necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qom: Add class_base_initPaolo Bonzini
The class_base_init TypeInfo callback was present in one of the early QOM versions but removed (on my request...) before committing. We will need it soon, add it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qom: Add object_child_foreach()Paolo Bonzini
A utility function that will be used to implement hierarchical realization. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> [AF: Drop unrelated whitespace change, add Returns: in documentation] [AF: Use new object_property_is_child() helper.] Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-18qom: Introduce object_property_is_{child,link}()Andreas Färber
Avoids hardcoding partial string comparisons. Signed-off-by: Alexander Barabash <alexander_barabash@mentor.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2012-06-18qom: Add object_class_get_parent()Paolo Bonzini
This simple bit of functionality was missing and we'll need it soon, so add it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> [AF: Document possible NULL return value] Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-07build: adapt qom/Makefile and move it to Makefile.objsPaolo Bonzini
qom/ already used a separate makefile. Convert it to use relative paths, and make it declare both common-obj-y and user-obj-y. This way, the upper makefiles do not need to know that some QOM files are compiled twice. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-05-12qdev: Use object_property_print() in info qtreePaolo Bonzini
Otherwise, non-string properties without a legacy counterpart are missed. Also fix error propagation in object_property_print() itself. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-05-03qom: Fix memory leak in function container_getStefan Weil
Valgrind reported this memory leak which occured very often. Test scenario: qemu-system-i386 (no arguments), only BIOS started, terminate with monitor command (quit). Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Andreas Färber <afaerber@suse.de>
2012-04-24qom: Refine container_get() to allow using a custom rootAndreas Färber
Specify the root to search from as argument. This avoids hardcoding "/machine" in some places and makes it more flexible. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-04-02qom: add container_getPaolo Bonzini
This is QOM "mkdir -p". It is useful when referring to container objects such as "/machine". Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14qom: Introduce CPU classAndreas Färber
Reintroduce CPUState as QOM object: It's abstract and derived directly from TYPE_OBJECT for compatibility with the user emulators. The identifier CPUState avoids conflicts between CPU() and the struct. Introduce $(qom-twice-y) to build it separately for system and for user emulators. Prepare a virtual reset method, (re)introduce cpu_reset() as wrapper. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14qom: Introduce object_class_get_list()Andreas Färber
This function allows to obtain a singly-linked list of classes, which can be sorted by the caller. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14qom/object.c: rename type_class_init() to type_initialize()Igor Mitsyanko
Function name type_class_init() gave us a wrong impression of separation of type's "class" and "object" entities initialization. Name type_initialize() is more appropriate for type_class_init() function (considering what operations it performs). Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14qom: if @instance_size==0, assign size of object to parent object sizeIgor Mitsyanko
QOM documentation states that for objects of type with @instance_size == 0 size will be assigned to match parent object's size. But currently this feauture is not implemented and qemu asserts during creation of object with zero instance_size. Set appropriate value for type instance_size during type_class_init() call. object_initialize_with_type() must call type_class_init() before asserting type->instance_size, and object_new_with_type() must call type_class_init() before object allocation. Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-12qom: fix device hot-unplugPaolo Bonzini
Property removal modifies the list, so it is not safe to continue iteration. We know anyway that each object can have only one parent (see object_property_add_child), so exit after finding the requested object. Reported-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-22qom: In function object_set_link_property(), first call object_ref(), then ↵Alexander Barabash
object_unref(). In the old implementation, if the new value of the property links to the same object, as the old value, that object is first unref-ed, and then ref-ed. This leads to unintended deinitialization of that object. In the new implementation, this is fixed. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alexander Barabash <alexander_barabash@mentor.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-22qom: Fix object_initialize_with_type() assertionAndreas Färber
Assert the object is at least sizeof(Object), not sizeof(ObjectClass). Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-22qom: add generic string parsing/printingPaolo Bonzini
Add generic property accessors that take a string and parse it appropriately for the property type. All the magic here is done by the new string-based visitors. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-15qom: Unify type registrationAndreas Färber
Replace device_init() with generalized type_init(). While at it, unify naming convention: type_init([$prefix_]register_types) Also, type_init() is a function, so add preceding blank line where necessary and don't put a semicolon after the closing brace. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <anthony@codemonkey.ws> Cc: malc <av1474@comtv.ru> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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