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Commitca6c0ac

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Call SetLastError(0) before calling the file mapping functions
to make sure that the error code is reset, as a precaution incase the API doesn't properly reset it on success. This couldbe necessary, since we check the error value even if the functiondoesn't fail for specific success cases.
1 parentffbd17e commitca6c0ac

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‎src/backend/port/win32_shmem.c

Lines changed: 7 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@
66
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/port/win32_shmem.c,v 1.7 2009/01/01 17:23:46 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/port/win32_shmem.c,v 1.8 2009/05/04 08:36:40 mha Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -131,6 +131,9 @@ PGSharedMemoryCreate(Size size, bool makePrivate, int port)
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UsedShmemSegAddr=NULL;
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/* In case CreateFileMapping() doesn't set the error code to 0 on success */
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SetLastError(0);
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hmap=CreateFileMapping((HANDLE)0xFFFFFFFF,/* Use the pagefile */
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NULL,/* Default security attrs */
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PAGE_READWRITE,/* Memory is Read/Write */
@@ -160,6 +163,9 @@ PGSharedMemoryCreate(Size size, bool makePrivate, int port)
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Sleep(1000);
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/* In case CreateFileMapping() doesn't set the error code to 0 on success */
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SetLastError(0);
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hmap=CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE,0L, (DWORD)size,szShareMem);
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if (!hmap)
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ereport(FATAL,

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