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gallium-docs: Add documentation for threading requirements

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Add documentation for the requirements related to threading
for screens and contexts.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Axel Davy
2016-12-19 19:51:13 +01:00
parent fbb4af96c6
commit 1736ef6570
1 changed files with 10 additions and 0 deletions
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10
src/gallium/docs/source/screen.rst
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@@ -737,3 +737,13 @@ query group at the specified **index** is returned in **info**.
The function returns non-zero on success. The function returns non-zero on success.
The driver-specific query group is described with the The driver-specific query group is described with the
pipe_driver_query_group_info structure. pipe_driver_query_group_info structure.
Thread safety
-------------
Screen methods are required to be thread safe. While gallium rendering
contexts are not required to be thread safe, it is required to be safe to use
different contexts created with the same screen in different threads without
locks. It is also required to be safe using screen methods in a thread, while
using one of its contexts in another (without locks).