[Mono-bugs] [Bug 75923][Nor] New - Mono compilation leaks semaphores

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Changed by tmclaugh at sdf.lonestar.org.

http://bugzilla.ximian.com/show_bug.cgi?id=75923

--- shadow/75923	2005-08-28 04:00:34.000000000 -0400
+++ shadow/75923.tmp.11820	2005-08-28 04:00:34.000000000 -0400
@@ -0,0 +1,81 @@
+Bug#: 75923
+Product: Mono: Runtime
+Version: 1.1
+OS: other
+OS Details: FreeBSD 5.4-RELEASE-p6
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: io-layer
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: tmclaugh at sdf.lonestar.org               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Mono compilation leaks semaphores
+
+Description of Problem:
+This bug is a continuation of the problem in bug 75397.  The Mono
+compilation process was leaving semaphores after the build process was
+finished.  The semdel commit that was reported to fix the bug removes one
+of the semaphores but not all.  During the Mono compilation three
+semaphores are created.  The semdel program removes the second and third
+semaphores but the first one created during the process remains.  This has
+the effect of causing runtime errors and hangs over time and the number of
+leaked semaphores rack up.
+
+Steps to reproduce the problem:
+1. Build Mono
+2. Check system semaphores with ipcs
+
+
+Actual Results:
+The first semephore created during the build process is still left over
+after the process is finished.
+
+
+Expected Results:
+No semephores created by the building should remain.
+
+
+How often does this happen? 
+Everytime Mono is compiled.
+
+
+Additional Information:
+ipcs output below.
+
+before build:
+------------------------------------------------------------------------
+[tom at compass tom]$ ipcs -bst
+Semaphores:
+T     ID     KEY        MODE       OWNER    GROUP NSEMS    OTIME    CTIME
+------------------------------------------------------------------------
+
+during build:
+------------------------------------------------------------------------
+[tom at compass tom]$ ipcs -bst
+Semaphores:
+T     ID     KEY        MODE       OWNER    GROUP NSEMS    OTIME    CTIME
+s 196608 1294723677 --rw-------     root    wheel      8  3:01:43  3:01:23
+
+T     ID     KEY        MODE       OWNER    GROUP NSEMS    OTIME    CTIME
+s 196608 1294723677 --rw-------     root    wheel      8  3:02:58  3:01:23
+s 196609 1294710607 --rw-------     root    wheel      8  3:12:56  3:03:01
+
+[tom at compass tom]$ ipcs -bst
+Semaphores:
+T     ID     KEY        MODE       OWNER    GROUP NSEMS    OTIME    CTIME
+s 196608 1294723677 --rw-------     root    wheel      8  3:02:58  3:01:23
+s 262145 1294710607 --rw-------     root    wheel      8  3:18:31  3:17:47
+------------------------------------------------------------------------
+
+after build:
+------------------------------------------------------------------------
+[tom at compass tom]$ ipcs -bst
+Semaphores:
+T     ID     KEY        MODE       OWNER    GROUP NSEMS    OTIME    CTIME
+s 196608 1294723677 --rw-------     root    wheel      8  3:02:58  3:01:23
+------------------------------------------------------------------------