45 // create all the worker at start should considered a problem so exit. |
45 // create all the worker at start should considered a problem so exit. |
46 // If initializing = false, there are already some number of worker |
46 // If initializing = false, there are already some number of worker |
47 // threads and a failure would not be optimal but should not be fatal. |
47 // threads and a failure would not be optimal but should not be fatal. |
48 template <class WorkerType> |
48 template <class WorkerType> |
49 static uint add_workers (WorkerType* holder, |
49 static uint add_workers (WorkerType* holder, |
50 uint active_workers, |
50 uint active_workers, |
51 uint total_workers, |
51 uint total_workers, |
52 uint created_workers, |
52 uint created_workers, |
53 os::ThreadType worker_type, |
53 os::ThreadType worker_type, |
54 bool initializing) { |
54 bool initializing) { |
55 uint start = created_workers; |
55 uint start = created_workers; |
56 uint end = MIN2(active_workers, total_workers); |
56 uint end = MIN2(active_workers, total_workers); |
57 for (uint worker_id = start; worker_id < end; worker_id += 1) { |
57 for (uint worker_id = start; worker_id < end; worker_id += 1) { |
58 WorkerThread* new_worker = holder->install_worker(worker_id); |
58 WorkerThread* new_worker = holder->install_worker(worker_id); |
59 assert(new_worker != NULL, "Failed to allocate GangWorker"); |
59 assert(new_worker != NULL, "Failed to allocate GangWorker"); |
60 if (new_worker == NULL || !os::create_thread(new_worker, worker_type)) { |
60 if (new_worker == NULL || !os::create_thread(new_worker, worker_type)) { |
61 if(initializing) { |
61 if (initializing) { |
62 vm_exit_out_of_memory(0, OOM_MALLOC_ERROR, |
62 vm_exit_out_of_memory(0, OOM_MALLOC_ERROR, |
63 "Cannot create worker GC thread. Out of system resources."); |
63 "Cannot create worker GC thread. Out of system resources."); |
64 } |
64 } |
65 } |
65 } |
66 created_workers++; |
66 created_workers++; |
67 os::start_thread(new_worker); |
67 os::start_thread(new_worker); |
68 } |
68 } |
69 |
69 |
70 log_trace(gc, task)("AdaptiveSizePolicy::add_workers() : " |
70 return created_workers; |
71 "active_workers: %u created_workers: %u", |
71 } |
72 active_workers, created_workers); |
|
73 |
72 |
74 return created_workers; |
73 // Log (at trace level) a change in the number of created workers. |
|
74 template <class WorkerType> |
|
75 static void log_worker_creation(WorkerType* holder, |
|
76 uint previous_created_workers, |
|
77 uint active_workers, |
|
78 uint created_workers, |
|
79 bool initializing) { |
|
80 if (previous_created_workers < created_workers) { |
|
81 const char* initializing_msg = initializing ? "Adding initial" : "Creating additional"; |
|
82 log_trace(gc, task)("%s %s(s) previously created workers %u active workers %u total created workers %u", |
|
83 initializing_msg, holder->group_name(), previous_created_workers, active_workers, created_workers); |
|
84 } |
75 } |
85 } |
76 }; |
86 }; |
77 #endif // SHARE_VM_GC_SHARED_WORKERMANAGER_HPP |
87 #endif // SHARE_VM_GC_SHARED_WORKERMANAGER_HPP |