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Extend dsm API with a new function dsm_unpin_mapping.

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This reassociates a dynamic shared memory handle previous passed to
dsm_pin_mapping with the current resource owner, so that it will be
cleaned up at the end of the current query.

Patch by me.  Review of the function name by Andres Freund, Amit
Kapila, Jim Nasby, Petr Jelinek, and Álvaro Herrera.
This commit is contained in:
Robert Haas
2014-10-30 14:55:23 -04:00
parent fd0f651a86
commit f7102b0463
2 changed files with 19 additions and 0 deletions
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src/include/storage/dsm.h
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@@ -37,6 +37,7 @@ extern void dsm_detach(dsm_segment *seg);
/* Resource management functions. */
extern void dsm_pin_mapping(dsm_segment *seg);
extern void dsm_unpin_mapping(dsm_segment *seg);
extern void dsm_pin_segment(dsm_segment *seg);
extern dsm_segment *dsm_find_mapping(dsm_handle h);