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Document why Win32 loops over rename/unlink are necessary.

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This commit is contained in:
Bruce Momjian 2005-08-10 19:52:37 +00:00
parent e38c920dba
commit 8bbf227ad7
1 changed files with 11 additions and 3 deletions
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14
src/port/dirmod.c
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@ -10,7 +10,7 @@
* Win32 (NT, Win2k, XP). replace() doesn't work on Win95/98/Me.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/port/dirmod.c,v 1.38 2005/08/02 15:14:47 tgl Exp $
* $PostgreSQL: pgsql/src/port/dirmod.c,v 1.39 2005/08/10 19:52:37 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -118,7 +118,11 @@ pgrename(const char *from, const char *to)
{
int loops = 0;
/* Is this loop even necessary now that we have win32_open()? */
/*
* We need these loops because even though PostgreSQL uses flags
* that allow rename while the file is open, other applications
* might have these files open without those flags.
*/
#if defined(WIN32) && !defined(__CYGWIN__)
while (!MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING))
#endif
@ -164,7 +168,11 @@ pgunlink(const char *path)
{
int loops = 0;
/* Is this loop even necessary now that we have win32_open()? */
/*
* We need these loops because even though PostgreSQL uses flags
* that allow unlink while the file is open, other applications
* might have these files open without those flags.
*/
while (unlink(path))
{
if (errno != EACCES)