41 // initializing - true if this is called to get the initial number of
42 // GC workers.
43 // If initializing is true, do a vm exit if the workers cannot be created.
44 // The initializing = true case is for JVM start up and failing to
45 // create all the worker at start should considered a problem so exit.
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.
48 template <class WorkerType>
49 static uint add_workers (WorkerType* holder,
50 uint active_workers,
51 uint total_workers,
52 uint created_workers,
53 os::ThreadType worker_type,
54 bool initializing) {
55 uint start = created_workers;
56 uint end = MIN2(active_workers, total_workers);
57 for (uint worker_id = start; worker_id < end; worker_id += 1) {
58 WorkerThread* new_worker = holder->install_worker(worker_id);
59 assert(new_worker != NULL, "Failed to allocate GangWorker");
60 if (new_worker == NULL || !os::create_thread(new_worker, worker_type)) {
61 if(initializing) {
62 vm_exit_out_of_memory(0, OOM_MALLOC_ERROR,
63 "Cannot create worker GC thread. Out of system resources.");
64 }
65 }
66 created_workers++;
67 os::start_thread(new_worker);
68 }
69
70 return created_workers;
71 }
72
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) active workers %u created workers %u",
83 initializing_msg, holder->group_name(), active_workers, created_workers);
84 }
85 }
86 };
87 #endif // SHARE_VM_GC_SHARED_WORKERMANAGER_HPP
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41 // initializing - true if this is called to get the initial number of
42 // GC workers.
43 // If initializing is true, do a vm exit if the workers cannot be created.
44 // The initializing = true case is for JVM start up and failing to
45 // create all the worker at start should considered a problem so exit.
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.
48 template <class WorkerType>
49 static uint add_workers (WorkerType* holder,
50 uint active_workers,
51 uint total_workers,
52 uint created_workers,
53 os::ThreadType worker_type,
54 bool initializing) {
55 uint start = created_workers;
56 uint end = MIN2(active_workers, total_workers);
57 for (uint worker_id = start; worker_id < end; worker_id += 1) {
58 WorkerThread* new_worker = holder->install_worker(worker_id);
59 assert(new_worker != NULL, "Failed to allocate GangWorker");
60 if (new_worker == NULL || !os::create_thread(new_worker, worker_type)) {
61 if (initializing) {
62 vm_exit_out_of_memory(0, OOM_MALLOC_ERROR,
63 "Cannot create worker GC thread. Out of system resources.");
64 }
65 }
66 created_workers++;
67 os::start_thread(new_worker);
68 }
69
70 return created_workers;
71 }
72
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 }
85 }
86 };
87 #endif // SHARE_VM_GC_SHARED_WORKERMANAGER_HPP
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