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Optimize SqlClient query memory allocation#34047

Merged

saurabh500 merged 8 commits intodotnet:masterfrom Wraith2:sqlperf-memory

Dec 14, 2018

+284-134

Commits on Dec 11, 2018

add a pre-boxed invalid prepared handle constant to remove repeated boxing of -1
Wraith2
committed
change Task.Run to Task.Factory.StartNew(state) avoiding method scope closure allocation unless needed
Wraith2
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move several continuation functions to separate functions to avoid unnecasary closure scope allocations
Wraith2
committed
remove unused readPacket definition, allocation and cleanup
Wraith2
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add pre-boxed empty read packet variable to avoid boxing an int on every EmptyReadPacket property access
Wraith2
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refine state to remove this closure, minor formatting
Wraith2
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added AsyncHelper.*WithState methods to avoid closure manually
Wraith2
committed

Commits on Dec 13, 2018

address feedback and remove further BeginExecuteNonQuery closure
Wraith2
committed