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Diffstat (limited to 'src/backend/utils/mmgr/README')
| -rw-r--r-- | src/backend/utils/mmgr/README | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/backend/utils/mmgr/README b/src/backend/utils/mmgr/README index 45e610dd06..4ebb78e4eb 100644 --- a/src/backend/utils/mmgr/README +++ b/src/backend/utils/mmgr/README @@ -125,9 +125,14 @@ lifetimes that only partially overlap can be handled by allocating from different trees of the context forest (there are some examples in the next section). -For convenience we will also want operations like "reset/delete all -children of a given context, but don't reset or delete that context -itself". +Actually, it turns out that resetting a given context should almost +always imply deleting (not just resetting) any child contexts it has. +So MemoryContextReset() means that, and if you really do want a tree of +empty contexts you need to call MemoryContextResetOnly() plus +MemoryContextResetChildren(). + +For convenience we also provide operations like "reset/delete all children +of a given context, but don't reset or delete that context itself". Globally Known Contexts |