Fix-11260-launchhost #1127
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Fix-11260-launchhost #1127
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- Adds explicit host synchronization on queue sync events before adding barriers that wait on them.
- Introduced a copy command list barrier to synchronize pending copy operations with compute operations. - Added a dedicated copy marker event to ensure proper synchronization between command lists. - Updated the barrier logic to wait on both queue sync events and the new copy marker, improving event visibility and reducing potential race conditions.
- Add synchronization on both compute and copy command lists before callback - Submit GPU barriers after callback completes to avoid race with host-signaled events - Signal GpuAck and CallbackComplete from host for reliable completion - Add CallbackComplete member to base CallbackData class - Force command list flush after barrier submission
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Fixes hipLaunchHostFunc Hangs Intermittently on Aurora with Level Zero Backend #1126