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2012-02-07qom: use object_resolve_path_type for linksPaolo Bonzini1-14/+17
This allows to restrict partial matches to objects of the expected type. It will let people use bare names to reference drives even though their name might be the same as a device's (e.g. -drive id=hd0,if=none,... -device ...,drive=hd0,id=hd0). As a useful byproduct, this fixes a problem with links of interface type. When a link property's type is an interface, the code expects the implementation object (not the parent object) to be stored in the variable. The parent object does not contain the right vtable. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: add object_resolve_path_typePaolo Bonzini1-8/+18
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: fix off-by-onePaolo Bonzini1-5/+2
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: add property get/set wrappers for C typesPaolo Bonzini1-9/+110
Add wrappers that let you get/set properties using normal C data types. Reviewed-by: Anthony Liguori <anthony@aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: add QObject-based property get/set wrappersPaolo Bonzini2-1/+45
Move the creation of QmpInputVisitor and QmpOutputVisitor from qmp.c to qom/object.c, since it's the only practical way to access object properties. Keep this isolated such that it's easy to remove. At some point, we need to remove all usage of QObject in the tree and replace it with GVariant. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: do not include qdev header filePaolo Bonzini1-2/+0
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: avoid useless conversions from string to typePaolo Bonzini1-15/+12
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qom: clean up/optimize object_dynamic_castPaolo Bonzini1-24/+38
The interface loop can be performed only on the parent object. It does not need to be done on each interface. Similarly, we can simplify the code by switching early from the implementation object to the parent object. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-03container: make a decendent of ObjectAnthony Liguori3-6/+32
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- v1 -> v2 - Add license (Paolo)
2012-02-03object: sure up reference countingAnthony Liguori1-2/+14
Now we have the following behavior: 1) object_new() returns an object with ref = 1 2) object_initialize() does not increase the reference count (ref may be 0). 3) object_deref() will finalize the object when ref = 0. it does not free the memory associated with the object. 4) both link and child properties correctly set the reference count. The expected usage is the following: 1) child devices should generally be created via object_initialize() using memory from the parent device. Adding the object as a child property will take ownership of the object and tie the child's life cycle to the parent. 2) If a child device is created via qdev_create() or some other form of object_new(), there must be an object_delete() call in the parent device's finalize function. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qom: accept any compatible type when setting a link propertyAnthony Liguori1-4/+5
Links had limited utility before as they only allowed a concrete type to be specified. Now we can support abstract types and interfaces which means it's now possible to have a link<PCIDevice>. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qom: move properties from qdev to objectAnthony Liguori1-0/+468
This is mostly code movement although not entirely. This makes properties part of the Object base class which means that we can now start using Object in a meaningful way outside of qdev. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qom: allow object_class_foreach to take additional parameters to refine searchAnthony Liguori1-2/+16
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: change ambiguous qdev namesAnthony Liguori1-0/+5
Reported-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qom: add the base Object class (v2)Anthony Liguori2-0/+486
This class provides the main building block for QEMU Object Model and is extensively documented in the header file. It is largely inspired by GObject. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- v1 -> v2 - remove printf() in type registration - fix typo in comment (Paolo) - make Interface private - move object into a new directory and move header into include/qemu/ - don't make object.h depend on qemu-common.h - remove Type and replace it with TypeImpl * (Paolo) - use hash table to store types (Paolo) - aggressively cache parent type (Paolo) - make a type_register and use it with interfaces (Paolo) - fix interface cast comment (Paolo) - add a few more functions required in later series
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