diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/port/win32_shmem.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/backend/port/win32_shmem.c b/src/backend/port/win32_shmem.c index d431e0d0362..e724b3ef1a3 100644 --- a/src/backend/port/win32_shmem.c +++ b/src/backend/port/win32_shmem.c @@ -388,10 +388,18 @@ PGSharedMemoryReAttach(void) { PGShmemHeader *hdr; void *origUsedShmemSegAddr = UsedShmemSegAddr; + MEMORY_BASIC_INFORMATION previnfo; + DWORD queryerr; Assert(UsedShmemSegAddr != NULL); Assert(IsUnderPostmaster); + /* Preliminary probe of region we intend to release */ + if (VirtualQuery(UsedShmemSegAddr, &previnfo, sizeof(previnfo)) != 0) + queryerr = 0; + else + queryerr = GetLastError(); + /* * Release memory region reservation that was made by the postmaster */ @@ -405,12 +413,20 @@ PGSharedMemoryReAttach(void) DWORD maperr = GetLastError(); MEMORY_BASIC_INFORMATION info; + if (queryerr == 0) + elog(LOG, "VirtualQuery(%p) before free reports region of size %zu, base %p, has state 0x%lx", + UsedShmemSegAddr, previnfo.RegionSize, + previnfo.AllocationBase, previnfo.State); + else + elog(LOG, "VirtualQuery(%p) before free failed: error code %lu", + UsedShmemSegAddr, queryerr); + if (VirtualQuery(UsedShmemSegAddr, &info, sizeof(info)) != 0) - elog(LOG, "VirtualQuery(%p) reports region of size %zu, base %p, has state 0x%lx", + elog(LOG, "VirtualQuery(%p) after free reports region of size %zu, base %p, has state 0x%lx", UsedShmemSegAddr, info.RegionSize, info.AllocationBase, info.State); else - elog(LOG, "VirtualQuery(%p) failed: error code %lu", + elog(LOG, "VirtualQuery(%p) after free failed: error code %lu", UsedShmemSegAddr, GetLastError()); elog(FATAL, "could not reattach to shared memory (key=%p, addr=%p): error code %lu", |