lib.ptree: fix a bug where bogus PID was logged

src/lib/cpuset.lua

@@ -88,11 +88,11 @@ function CPUSet:list ()
    return list
 end
 
-function CPUSet:acquire_for_pci_addresses(addrs)
-   return self:acquire(numa.choose_numa_node_for_pci_addresses(addrs))
+function CPUSet:acquire_for_pci_addresses(addrs, worker)
+   return self:acquire(numa.choose_numa_node_for_pci_addresses(addrs), worker)
 end
 
-function CPUSet:acquire(on_node)
+function CPUSet:acquire(on_node, worker)
    for node, cpus in pairs(self.by_node) do
       if on_node == nil or on_node == node then
          for cpu, avail in pairs(cpus) do
@@ -117,11 +117,11 @@ function CPUSet:acquire(on_node)
    end
    for node, cpus in pairs(self.by_node) do
       print(("Warning: All assignable CPUs in use; "..
-             "leaving data-plane PID %d without assigned CPU."):format(S.getpid()))
+             "leaving data-plane worker '%s' without assigned CPU."):format(worker))
       return
    end
    print(("Warning: No assignable CPUs declared; "..
-         "leaving data-plane PID %d without assigned CPU."):format(S.getpid()))
+         "leaving data-plane worker '%s' without assigned CPU."):format(worker))
 end
 
 function CPUSet:release(cpu)

src/lib/ptree/ptree.lua

@@ -185,6 +185,7 @@ end
 
 function Manager:start ()
    if self.name then engine.claim_name(self.name) end
+   self:info(("Manager has started (PID %d)"):format(S.getpid()))
    self.cpuset:bind_to_numa_node()
    require('lib.fibers.file').install_poll_io_handler()
    self.sched = fiber.current_scheduler
@@ -368,7 +369,7 @@ function Manager:acquire_cpu_for_worker(id, app_graph)
          end
       end
    end
-   return self.cpuset:acquire_for_pci_addresses(pci_addresses)
+   return self.cpuset:acquire_for_pci_addresses(pci_addresses, id)
 end
 
 function Manager:compute_scheduling_for_worker(id, app_graph)