Use semaphore and spinlock in tasking::Scheduler #5973
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Signed-off-by: Michał Zientkiewicz <[email protected]>
Signed-off-by: Michał Zientkiewicz <[email protected]>
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Signed-off-by: Michał Zientkiewicz <[email protected]>
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Category:
Other (e.g. Documentation, Tests, Configuration)
Description:
Separate queue lock
Previously the scheduler featured just one mutex to guard everything. This PR adds a separate lock for the queue of ready tasks. This reduces contention when popping tasks by worker threads.
Use semaphore for queue state tracking
Prior to this change, a condition variable was used to wake up worker threads when ready tasks became available. This PR uses a semaphore which is raised when a task becomes ready and lowered before one is popped.
Additional information:
Affected modules and functionalities:
Key points relevant for the review:
dali/core/exec/tasking_test.ccChecklist
Documentation
DALI team only
Requirements
REQ IDs: N/A
JIRA TASK: N/A