Stephen Kitt <******@****.***> 1716824549 +0200

func prepareFreeWorkbufs() {
	lock(&work.wbufSpans.lock)
	if work.full != 0 {
		throw("cannot free workbufs when work.full != 0")
	}
	// Since all workbufs are on the empty list, we don't care
	// which ones are in which spans. We can wipe the entire empty
	// list and move all workbuf spans to the free list.
	work.empty = 0
	work.wbufSpans.free.takeAll(&work.wbufSpans.busy)
	unlock(&work.wbufSpans.lock)
}

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object

        getWorkspace(workId) >> workspace
    }

    def step = new AssignImmutableWorkspaceStep(deleter, fileSystemAccess, immutableWorkspaceMetadataStore, outputSnapshotter, delegate)
    def work = Stub(ImmutableUnitOfWork)

    def setup() {
        work.workspaceProvider >> workspaceProvider
    }

    def "returns immutable workspace when already exists"() {
        def outputFile = immutableWorkspace.file("output.txt")

This is the fastest isolation mode because it requires the least overhead to set up and execute the work item.
However, it will use a single shared classloader for all units of work.
This means that each unit of work can affect one another through static class state.
It also means that every unit of work uses the same version of libraries on the buildscript classpath.

 * location and we fall back to re-executing the work.</li>
 * <li>If we end up executing the work (either because there is no existing immutable workspace, or it is
 * inconsistent), then a unique temporary workspace directory is provided to the work to create its outputs
 * in, and the work is executed.</li>
 * <li>When the execution of the work finishes, we snapshot the outputs of the work, and store their hashes

      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object