Uno/Binary/Spec/Threading-Model
From Apache OpenOffice Wiki
version: 8183
state: draft
type: specification
Threading Model
- Feature
- UNO Threading Model for the Binary UNO runtime.
- Support thread model specific compilation. The following new defines select the UNO threading model for binary UNO:
-
UNO_THREAD_SAFE
-
UNO_THREAD_UNSAFE
-
UNO_THREAD_AFFINE
-
- Services / Client code compiled with one of these defines lifes in the associated environment. Not defining one of these defines, lets binary UNO fall back to
CPPU_THREAD_SAFE
, and gives a warning. This is compatible with the original behaviour.
- Associated environments are:
-
UNO_THREAD_SAFE
=>"<ABI>"
-
UNO_THREAD_UNSAFE
=>"<ABI>:mutex"
-
UNO_THREAD_AFFINE
=>"<ABI>:thread"
-
- Threading model specific environments are backed by the appropriate purpose environments.
-
"<ABI>:mutex"
is backed by the default mutex environment -
"<ABI>"
is backed by the default free environment (as usual) -
"<ABI>:thread"
is backed by the default thread environment
-
- The UNO Threading Model specification for Binary UNO is the sum of the specifications for the parts, see below for details.
- Rationale
- The current threading related code quality of OOo has proven, the doing proper multi threading programming is not easy. Even seemingly simple things, as thread safeness, seem to be unreachable. Therefor UNO programming must be as simple as possible in respect to multi threading programming.
- API Extensions
-
- Environment Guards
- Environment Aware References
- Environment Stacks
- Cascaded Mappings
- Purpose Environments
- Dependencies
-
- Environment Guards
- Environment Aware References
- Environment Stacks
- Cascaded Mappings
- Purpose Environments
- Compatibility Issues
-
- Environment Guards
- Environment Aware References
- Environment Stacks
- Cascaded Mappings
- Purpose Environments