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From: Vladimir Lettiev <crux@gorodmasterov.com>
To: ALT Devel discussion list <devel@altlinux.ru>
Subject: Re: [devel] Re: I: Sisyphus-20050929 unmets: +2 (93/40)
Date: Sun, 02 Oct 2005 14:19:07 +0400
Message-ID: <433FB41B.7020804@gorodmasterov.com> (raw)
In-Reply-To: <20051001160154.GB20413@basalt.office.altlinux.org>

[-- Attachment #1: Type: text/plain, Size: 693 bytes --]

Dmitry V. Levin пишет:
>>На ядрах с Owl действительно наблюдаются проблемы при запуске тестов 
>>этого пакета, кажется вот на такой конструкции:
>>
>>my $share = new IPC::ShareLite( .... some things here ....);
>>...
>>$share->store( 0 );
>>
>>Дальше тест не выполняется, висит, до нажатия Ctrl+C.
>>На 2.6.x естественно все ок.
> 
> Это дело времени. :)

Я сделал патч для IPC::ShareLite.
Как мне показалось проблема в том, что данный модуль сначала делает 
shmdt() и лишь после пытается метить сегмент флагом IPC_RMID. Попробовал 
поменять порядок и вроде как заработало.
Если кто-то может его прокомментировать, welcome.

-- 
С уважением, Владимир Леттиев aka crux <crux@gorodmasterov.com>

[-- Attachment #2: sharelite.diff --]
[-- Type: text/x-patch, Size: 1029 bytes --]

--- sharelite.c~	2000-04-14 14:24:00 +0400
+++ sharelite.c	2005-10-02 14:07:41 +0400
@@ -284,10 +284,10 @@
   /* garbage collection -- remove unused segments */
   if (node->shmaddr->next_shmid >= 0) {
     shmid = node->shmaddr->next_shmid;
-    if (_detach_segments(node->next) < 0) 
-      return -1;
     if (_remove_segments(shmid) < 0) 
       return -1;   
+    if (_detach_segments(node->next) < 0) 
+      return -1;
     node->shmaddr->next_shmid = -1;
     node->next = NULL;
     share->tail = node;
@@ -446,16 +446,18 @@
   }                   
 
   semid = share->head->shmid;
-  if (_detach_segments(share->head) < 0) 
-    return -1;
 
   if (rmid) {
     if (_remove_segments(semid) < 0) 
       return -1;
     semctl_arg.val = 0;
+    if (_detach_segments(share->head) < 0) 
+      return -1;
     if (semctl(share->semid, 0, IPC_RMID, semctl_arg) < 0) 
       return -1;
   } else {
+    if (_detach_segments(share->head) < 0) 
+      return -1;
     if (RM_EX_LOCK(share->semid) < 0) 
       return -1;
   }

  parent reply	other threads:[~2005-10-02 10:19 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-29 19:08 [devel] " Alexey M. Tourbin
2005-09-29 20:28 ` Vladimir Lettiev
2005-09-30 15:35   ` Alexey Gladkov
2005-09-30 23:15     ` Vladimir Lettiev
2005-10-01  3:16       ` [devel] " Alexey Tourbin
2005-10-01  7:16         ` Vladimir Lettiev
2005-10-01  7:28           ` Alexey Tourbin
2005-10-01 16:01           ` Dmitry V. Levin
2005-10-01 20:22             ` [devel] [JT] 2.6-ow? Michael Shigorin
2005-10-02 10:19             ` Vladimir Lettiev [this message]
2005-10-03 15:40               ` [devel] Re: I: Sisyphus-20050929 unmets: +2 (93/40) Dmitry V. Levin
2005-10-03 19:03                 ` Vladimir Lettiev

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