Change in osmo-msc[master]: vty: show subscriber: put() before printing the use count

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Harald Welte gerrit-no-reply at lists.osmocom.org
Tue Dec 18 18:01:26 UTC 2018


Harald Welte has submitted this change and it was merged. ( https://gerrit.osmocom.org/12266 )

Change subject: vty: show subscriber: put() before printing the use count
......................................................................

vty: show subscriber: put() before printing the use count

Do not show the VTY command's own use count during 'show subscriber <ID>'.

When using 'show subscriber msisdn 2023', I was surprised to see a use count of
2 and suspected a use count leak. With 'show subscriber cache' however, the use
count is 1.

So I realized it is the vty command's own use count that makes it two, besides
the lu_complete=true one.

Change-Id: Id02b57b7ed299b010b9f8b9e809548eb1e6aa699
---
M src/libmsc/msc_vty.c
1 file changed, 5 insertions(+), 2 deletions(-)

Approvals:
  Harald Welte: Looks good to me, approved
  Jenkins Builder: Verified



diff --git a/src/libmsc/msc_vty.c b/src/libmsc/msc_vty.c
index 87adc82..4e71e26 100644
--- a/src/libmsc/msc_vty.c
+++ b/src/libmsc/msc_vty.c
@@ -832,10 +832,13 @@
 		return CMD_WARNING;
 	}
 
-	subscr_dump_full_vty(vty, vsub);
-
+	/* In the vty output to the user, exclude this local use count added by vlr_subscr_get() in get_vsub_by_argv().
+	 * This works, because: for get_vsub_by_argv() to succeed, there *must* have been at least one use count before
+	 * this, and since this is not multi-threaded, this vlr_subscr_put() cannot possibly reach a count of 0. */
 	vlr_subscr_put(vsub);
 
+	subscr_dump_full_vty(vty, vsub);
+
 	return CMD_SUCCESS;
 }
 

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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Id02b57b7ed299b010b9f8b9e809548eb1e6aa699
Gerrit-Change-Number: 12266
Gerrit-PatchSet: 3
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-CC: Max <msuraev at sysmocom.de>
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