Examples of hudson.slaves.WorkspaceList.acquire()

                    // this prevents multiple workspaces of the same job --- the behavior of Hudson < 1.319.
                    //
                    // OTOH, if a concurrent build is chosen, the user is willing to create a multiple workspace,
                    // so better throughput is achieved over time (modulo the initial cost of creating that many workspaces)
                    // by having multiple workspaces
                    WorkspaceList.Lease lease = l.acquire(ws, !concurrentBuild);
                    Launcher launcher = ws.createLauncher(listener);
                    try {
                        LOGGER.fine("Polling SCM changes of " + getName());
                        if (pollingBaseline==null) // see NOTE-NO-BASELINE above
                            calcPollingBaseline(lb,launcher,listener);

                    // this prevents multiple workspaces of the same job --- the behavior of Hudson < 1.319.
                    //
                    // OTOH, if a concurrent build is chosen, the user is willing to create a multiple workspace,
                    // so better throughput is achieved over time (modulo the initial cost of creating that many workspaces)
                    // by having multiple workspaces
                    WorkspaceList.Lease lease = l.acquire(ws, !concurrentBuild);
                    Launcher launcher = ws.createLauncher(listener);
                    try {
                        LOGGER.fine("Polling SCM changes of " + getName());
                        if (pollingBaseline==null) // see NOTE-NO-BASELINE above
                            calcPollingBaseline(lb,launcher,listener);

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