mod_slotmem_shm: follow up tp r1822509.

Fishy "unlink semantic" (description) does not apply anymore.

[Reverted by r1831868]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1823572 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/modules/slotmem/mod_slotmem_shm.c b/modules/slotmem/mod_slotmem_shm.c
index 2986df439190ae50620dd87d4fca179fdba52627..e7599726d4697b1ffca9567e2242e1b06db850c5 100644 (file)
--- a/modules/slotmem/mod_slotmem_shm.c
+++ b/modules/slotmem/mod_slotmem_shm.c
@@ -78,31 +78,6 @@ static apr_pool_t *gpool = NULL;
 #define DEFAULT_SLOTMEM_SUFFIX ".shm"
 #define DEFAULT_SLOTMEM_PERSIST_SUFFIX ".persist"
 
-/* Unixes (and Netware) have the unlink() semantic, which allows to
- * apr_file_remove() a file still in use (opened elsewhere), the inode
- * remains until the last fd is closed, whereas any file created with
- * the same name/path will use a new inode.
- *
- * On windows and OS/2 ("\SHAREMEM\..." tree), apr_file_remove() marks
- * the files for deletion until the last HANDLE is closed, meanwhile the
- * same file/path can't be opened/recreated.
- * Thus on graceful restart (the only restart mode with mpm_winnt), the
- * old file may still exist until all the children stop, while we ought
- * to create a new one for our new clear SHM.  Therefore, we would only
- * be able to reuse (attach) the old SHM, preventing some changes to
- * the config file, like the number of balancers/members, since the
- * size checks (to fit the new config) would fail.  Let's avoid this by
- * including the generation number in the SHM filename (obviously not
- * the persisted name!)
- */
-#ifndef SLOTMEM_UNLINK_SEMANTIC
-#if defined(WIN32) || defined(OS2)
-#define SLOTMEM_UNLINK_SEMANTIC 0
-#else
-#define SLOTMEM_UNLINK_SEMANTIC 1
-#endif
-#endif
-
 /*
  * Persist the slotmem in a file
  * slotmem name and file name.