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Unify several ways to tracking backend type

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Add a new global variable MyBackendType that uses the same BackendType
enum that was previously only used by the stats collector.  That way
several duplicate ways of checking what type a particular process is
can be simplified.  Since it's no longer just for stats, move to
miscinit.c and rename existing functions to match the expanded
purpose.

Reviewed-by: Julien Rouhaud <rjuju123@gmail.com>
Reviewed-by: Kuntal Ghosh <kuntalghosh.2007@gmail.com>
Reviewed-by: Alvaro Herrera <alvherre@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/flat/c65e5196-4f04-4ead-9353-6088c19615a3@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2020-03-11 16:36:40 +01:00
parent 1cc9c2412c
commit 8e8a0becb3
12 changed files with 126 additions and 164 deletions
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55
src/backend/utils/init/miscinit.c
View File

@ -57,6 +57,8 @@
ProcessingMode Mode = InitProcessing;
BackendType MyBackendType;
/* List of lock files to be removed at proc exit */
static List *lock_files = NIL;
@ -187,6 +189,59 @@ SwitchBackToLocalLatch(void)
SetLatch(MyLatch);
}
const char *
GetBackendTypeDesc(BackendType backendType)
{
const char *backendDesc = "unknown process type";
switch (backendType)
{
case B_INVALID:
backendDesc = "not initialized";
break;
case B_AUTOVAC_LAUNCHER:
backendDesc = "autovacuum launcher";
break;
case B_AUTOVAC_WORKER:
backendDesc = "autovacuum worker";
break;
case B_BACKEND:
backendDesc = "client backend";
break;
case B_BG_WORKER:
backendDesc = "background worker";
break;
case B_BG_WRITER:
backendDesc = "background writer";
break;
case B_CHECKPOINTER:
backendDesc = "checkpointer";
break;
case B_STARTUP:
backendDesc = "startup";
break;
case B_WAL_RECEIVER:
backendDesc = "walreceiver";
break;
case B_WAL_SENDER:
backendDesc = "walsender";
break;
case B_WAL_WRITER:
backendDesc = "walwriter";
break;
case B_ARCHIVER:
backendDesc = "archiver";
break;
case B_STATS_COLLECTOR:
backendDesc = "stats collector";
break;
case B_LOGGER:
backendDesc = "logger";
break;
}
return backendDesc;
}
/* ----------------------------------------------------------------
* database path / name support stuff