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libCom/WIN32: Merged Jeff's fix for bug 717252

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o Fixed race condition where win32 thread parm was not pushed onto the
  list before the thread was started, and so if the thread exits very
  quickly it can try to remove a non-existent thread parameter from
  the list.
o This impacts only win32.
This commit is contained in:
Jeff Hill
2011-02-11 16:33:58 -06:00
committed by Andrew Johnson
parent c698853394
commit fd72cb63bf
1 changed files with 7 additions and 4 deletions
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11
src/libCom/osi/os/WIN32/osdThread.c
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@@ -630,18 +630,21 @@ epicsShareFunc epicsThreadId epicsShareAPI epicsThreadCreate (const char *pName,
free ( pParmWIN32 );
return NULL;
}
EnterCriticalSection ( & pGbl->mutex );
ellAdd ( & pGbl->threadList, & pParmWIN32->node );
LeaveCriticalSection ( & pGbl->mutex );
wstat = ResumeThread ( pParmWIN32->handle );
if (wstat==0xFFFFFFFF) {
EnterCriticalSection ( & pGbl->mutex );
ellDelete ( & pGbl->threadList, & pParmWIN32->node );
LeaveCriticalSection ( & pGbl->mutex );
CloseHandle ( pParmWIN32->handle );
free ( pParmWIN32 );
return NULL;
}
EnterCriticalSection ( & pGbl->mutex );
ellAdd ( & pGbl->threadList, & pParmWIN32->node );
LeaveCriticalSection ( & pGbl->mutex );
return ( epicsThreadId ) pParmWIN32;
}