[ This description should have been on the earlier fork/exec

commit, but I am adding it now so it is in CVS.]

The patch basically is a slight rearrangement of the code to allow
fork/exec on Unix, with the ultimate goal of doing CreateProcess on
Win32.  The changes are:

        o  Write out postmaster global variables and per-backend
variables to be read by the exec'ed backend

        o  Mark some static variables as global when exec is used so
then can be dumped from postmaster.c, marked NON_EXEC_STATIC

        o  Remove value passing with -p now that we have per-backend
file

        o  Move some pointer storage out of shared memory for easier
dumping.

        o  Modified pgsql_temp directory cleanup to handle per-database
directories and the backend exec directory under datadir.


Claudio Natoli

src/backend/storage/ipc/shmem.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/ipc/shmem.c,v 1.75 2003/12/20 17:31:21 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/ipc/shmem.c,v 1.76 2003/12/21 04:30:10 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -258,9 +258,7 @@ InitShmemIndex(void)
  * ShmemInitHash -- Create/Attach to and initialize
  *		shared memory hash table.
  *
- * Notes:
- *
- * assume caller is doing some kind of synchronization
+ * We assume caller is doing some kind of synchronization
  * so that two people dont try to create/initialize the
  * table at once.
  */