Notation used in Ruby API documentation
Module: db
Description: This class specifies connections between different layers.
Connections are build using connect. There are basically two flavours of connections: intra-layer and inter-layer.
Intra-layer connections make nets begin propagated along different shapes on the same net. Without the intra-layer connections, nets are not propagated over shape boundaries. As this is usually intended, intra-layer connections should always be specified for each layer.
Inter-layer connections connect shapes on different layers. Shapes which touch across layers will be connected if their layers are specified as being connected through inter-layer connect.
All layers are specified in terms of layer indexes. Layer indexes are layout layer indexes (see Layout class).
The connectivity object also manages the global nets. Global nets are substrate for example and they are propagated automatically from subcircuits to circuits. Global nets are defined by name and are managed through IDs. To get the name for a given ID, use global_net_name. Starting with version 0.29, soft connections are supported. Soft connections attach to high-ohmic substrate or diffusion layers (the 'lower' layer) are upon netlist extraction it will be checked that no wiring is routed over such connections. See soft_connect and soft_global_connect for details.
This class has been introduced in version 0.26.
| new Connectivity ptr | new | Creates a new object of this class |
| void | _create | Ensures the C++ object is created | ||
| void | _destroy | Explicitly destroys the object | ||
| [const] | bool | _destroyed? | Returns a value indicating whether the object was already destroyed | |
| [const] | bool | _is_const_object? | Returns a value indicating whether the reference is a const reference | |
| void | _manage | Marks the object as managed by the script side. | ||
| void | _unmanage | Marks the object as no longer owned by the script side. | ||
| void | assign | (const Connectivity other) | Assigns another object to self | |
| void | connect | (unsigned int layer) | Specifies intra-layer connectivity. | |
| void | connect | (unsigned int layer_a, unsigned int layer_b) | Specifies inter-layer connectivity. | |
| unsigned long | connect_global | (unsigned int layer, string global_net_name) | Connects the given layer to the global net given by name. | |
| [const] | new Connectivity ptr | dup | Creates a copy of self | |
| unsigned long | global_net_id | (string global_net_name) | Gets the ID for a given global net name. | |
| [const] | string | global_net_name | (unsigned long global_net_id) | Gets the name for a given global net ID. |
| void | soft_connect | (unsigned int layer_a, unsigned int layer_b) | Specifies a soft connection between layer_a and layer_b. | |
| unsigned long | soft_connect_global | (unsigned int layer, string global_net_name) | Soft-connects the given layer to the global net given by name. |
| void | create | Use of this method is deprecated. Use _create instead | ||
| void | destroy | Use of this method is deprecated. Use _destroy instead | ||
| [const] | bool | destroyed? | Use of this method is deprecated. Use _destroyed? instead | |
| [const] | bool | is_const_object? | Use of this method is deprecated. Use _is_const_object? instead |
_create | Signature: void _create Description: Ensures the C++ object is created Use this method to ensure the C++ object is created, for example to ensure that resources are allocated. Usually C++ objects are created on demand and not necessarily when the script object is created. | ||||
_destroy | Signature: void _destroy Description: Explicitly destroys the object Explicitly destroys the object on C++ side if it was owned by the script interpreter. Subsequent access to this object will throw an exception. If the object is not owned by the script, this method will do nothing. | ||||
_destroyed? | Signature: [const] bool _destroyed? Description: Returns a value indicating whether the object was already destroyed This method returns true, if the object was destroyed, either explicitly or by the C++ side. The latter may happen, if the object is owned by a C++ object which got destroyed itself. | ||||
_is_const_object? | Signature: [const] bool _is_const_object? Description: Returns a value indicating whether the reference is a const reference This method returns true, if self is a const reference. In that case, only const methods may be called on self. | ||||
_manage | Signature: void _manage Description: Marks the object as managed by the script side. After calling this method on an object, the script side will be responsible for the management of the object. This method may be called if an object is returned from a C++ function and the object is known not to be owned by any C++ instance. If necessary, the script side may delete the object if the script's reference is no longer required. Usually it's not required to call this method. It has been introduced in version 0.24. | ||||
_unmanage | Signature: void _unmanage Description: Marks the object as no longer owned by the script side. Calling this method will make this object no longer owned by the script's memory management. Instead, the object must be managed in some other way. Usually this method may be called if it is known that some C++ object holds and manages this object. Technically speaking, this method will turn the script's reference into a weak reference. After the script engine decides to delete the reference, the object itself will still exist. If the object is not managed otherwise, memory leaks will occur. Usually it's not required to call this method. It has been introduced in version 0.24. | ||||
assign | Signature: void assign (const Connectivity other) Description: Assigns another object to self | ||||
connect | (1) Signature: void connect (unsigned int layer) Description: Specifies intra-layer connectivity. This method specifies a hard connection between shapes on the given layer. Without specifying such a connection, shapes on that layer do not form connection regions. | ||||
(2) Signature: void connect (unsigned int layer_a, unsigned int layer_b) Description: Specifies inter-layer connectivity. This method specifies a hard connection between shapes on layer_a and layer_b. | |||||
connect_global | Signature: unsigned long connect_global (unsigned int layer, string global_net_name) Description: Connects the given layer to the global net given by name. Returns the ID of the global net. | ||||
create | Signature: void create Description: Ensures the C++ object is created Use of this method is deprecated. Use _create instead Use this method to ensure the C++ object is created, for example to ensure that resources are allocated. Usually C++ objects are created on demand and not necessarily when the script object is created. | ||||
destroy | Signature: void destroy Description: Explicitly destroys the object Use of this method is deprecated. Use _destroy instead Explicitly destroys the object on C++ side if it was owned by the script interpreter. Subsequent access to this object will throw an exception. If the object is not owned by the script, this method will do nothing. | ||||
destroyed? | Signature: [const] bool destroyed? Description: Returns a value indicating whether the object was already destroyed Use of this method is deprecated. Use _destroyed? instead This method returns true, if the object was destroyed, either explicitly or by the C++ side. The latter may happen, if the object is owned by a C++ object which got destroyed itself. | ||||
dup | Signature: [const] new Connectivity ptr dup Description: Creates a copy of self Python specific notes: | ||||
global_net_id | Signature: unsigned long global_net_id (string global_net_name) Description: Gets the ID for a given global net name. | ||||
global_net_name | Signature: [const] string global_net_name (unsigned long global_net_id) Description: Gets the name for a given global net ID. | ||||
is_const_object? | Signature: [const] bool is_const_object? Description: Returns a value indicating whether the reference is a const reference Use of this method is deprecated. Use _is_const_object? instead This method returns true, if self is a const reference. In that case, only const methods may be called on self. | ||||
new | Signature: [static] new Connectivity ptr new Description: Creates a new object of this class Python specific notes: | ||||
soft_connect | Signature: void soft_connect (unsigned int layer_a, unsigned int layer_b) Description: Specifies a soft connection between layer_a and layer_b.
Soft connections are made between a lower and an upper layer. The lower layer conceptually is a high-ohmic (i.e. substrate, diffusion) region that is not intended for signal wiring. The netlist extraction will check that no routing happens over such regions. Soft connections have in introduced in version 0.29. | ||||
soft_connect_global | Signature: unsigned long soft_connect_global (unsigned int layer, string global_net_name) Description: Soft-connects the given layer to the global net given by name. Returns the ID of the global net. See soft_connect for a description of the soft connection feature. The global net is always the 'lower' (i.e. high-ohmic, substrate) part of the soft connection. Soft connections have in introduced in version 0.29. |