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Revert "Consistently test for in-use shared memory."

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This reverts commits 2f932f71d9,
16ee6eaf80 and
6f0e190056.  The buildfarm has revealed
several bugs.  Back-patch like the original commits.

Discussion: https://postgr.es/m/20190404145319.GA1720877@rfd.leadboat.com
This commit is contained in:
Noah Misch
2019-04-05 00:00:52 -07:00
parent 794c543b17
commit 82150a05be
11 changed files with 179 additions and 495 deletions
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7
src/backend/port/win32_shmem.c
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@ -170,9 +170,14 @@ EnableLockPagesPrivilege(int elevel)
*
* Create a shared memory segment of the given size and initialize its
* standard header.
*
* makePrivate means to always create a new segment, rather than attach to
* or recycle any existing segment. On win32, we always create a new segment,
* since there is no need for recycling (segments go away automatically
* when the last backend exits)
*/
PGShmemHeader *
PGSharedMemoryCreate(Size size, int port,
PGSharedMemoryCreate(Size size, bool makePrivate, int port,
PGShmemHeader **shim)
{
void *memAddress;