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Create an internal semaphore API that is not tied to SysV semaphores.

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As proof of concept, provide an alternate implementation based on POSIX
semaphores.  Also push the SysV shared-memory implementation into a
separate file so that it can be replaced conveniently.
This commit is contained in:
Tom Lane
2002-05-05 00:03:29 +00:00
parent 91fc10fdac
commit 72a3902a66
37 changed files with 1659 additions and 1370 deletions
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5
src/backend/utils/init/postinit.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.103 2002/04/27 21:24:34 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.104 2002/05/05 00:03:29 tgl Exp $
*
*
*-------------------------------------------------------------------------
@ -32,6 +32,7 @@
#include "mb/pg_wchar.h"
#include "miscadmin.h"
#include "storage/backendid.h"
#include "storage/ipc.h"
#include "storage/proc.h"
#include "storage/sinval.h"
#include "storage/smgr.h"
@ -181,7 +182,7 @@ InitCommunication(void)
* postmaster. Create private "shmem" and semaphores. Setting
* MaxBackends = 16 is arbitrary.
*/
CreateSharedMemoryAndSemaphores(true, 16);
CreateSharedMemoryAndSemaphores(true, 16, 0);
}
}