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Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/utils/mmgr/README | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/backend/utils/mmgr/README b/src/backend/utils/mmgr/README index 221b4bd3433..777481c83d3 100644 --- a/src/backend/utils/mmgr/README +++ b/src/backend/utils/mmgr/README @@ -67,6 +67,12 @@ chunk might later be repalloc'd larger; it can also be pfree'd without error. Similarly, repalloc allows realloc'ing to zero size. * pfree and repalloc do not accept a NULL pointer. This is intentional. +(For repalloc, this is necessary: As mentioned above, repalloc does +not depend on the current memory context. But then it needs to know +which memory context to do the allocation in. So the first allocation +has to be done outside of repalloc. For pfree, this behavior is +mostly historical and partially because the extra check would impact +performance.) The Current Memory Context |