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Commitbd4ae0f

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Add interrupt checks to contrib/pg_prewarm.
Currently the extension's pg_prewarm() function didn't checkinterrupts once it started "warming" data. Since individual calls cantake a long while it's important for them to be interruptible.Backpatch to 9.4 where pg_prewarm was introduced.
1 parent28245b8 commitbd4ae0f

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‎contrib/pg_prewarm/pg_prewarm.c

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Original file line numberDiff line numberDiff line change
@@ -159,6 +159,7 @@ pg_prewarm(PG_FUNCTION_ARGS)
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*/
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for (block=first_block;block <=last_block;++block)
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{
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CHECK_FOR_INTERRUPTS();
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PrefetchBuffer(rel,forkNumber,block);
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++blocks_done;
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}
@@ -177,6 +178,7 @@ pg_prewarm(PG_FUNCTION_ARGS)
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*/
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for (block=first_block;block <=last_block;++block)
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{
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CHECK_FOR_INTERRUPTS();
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smgrread(rel->rd_smgr,forkNumber,block,blockbuffer);
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++blocks_done;
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}
@@ -190,6 +192,7 @@ pg_prewarm(PG_FUNCTION_ARGS)
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{
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Bufferbuf;
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CHECK_FOR_INTERRUPTS();
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buf=ReadBufferExtended(rel,forkNumber,block,RBM_NORMAL,NULL);
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ReleaseBuffer(buf);
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++blocks_done;

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