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Diffstat (limited to 'examples/Threads/task_four.cpp')
| -rw-r--r-- | examples/Threads/task_four.cpp | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/examples/Threads/task_four.cpp b/examples/Threads/task_four.cpp deleted file mode 100644 index 87a2f3abfa8..00000000000 --- a/examples/Threads/task_four.cpp +++ /dev/null @@ -1,243 +0,0 @@ -// $Id$ - -// The following test was written by Hamutal Yanay & Ari Erev's -// (Ari_Erev@comverse.com). -// -// This test program test enhancements to the thread_manager and task -// classes. The purpose of these enhancements was to allow the -// thread_manager to recognize the concept of an ACE_Task and to be -// able to group ACE_Tasks in groups. -// -// There are two main ACE_Tasks in this sample: -// -// Invoker_Task - is run from main (). It's purpose is to run a number of -// ACE_Tasks of type Worker_Task. The number can be specified -// on the command line. -// After starting the tasks, the Invoker_Task groups all the tasks -// in one group and then uses the -// num_tasks_in_group () to find out if the real number of tasks -// that are now running (should be the same as the number of tasks -// started). -// It also, suspends and resumes all the threads in the group to -// test the suspend_grp () and resume_grp () methods. -// Then it waits for all the tasks to end. -// Worker_Task - ACE_Tasks that are started by the Invoker_Task. -// Each Worker_Task can start a number of threads. -// The Worker_Task threads perform some work (iteration). The number -// of the iterations can be specified on the command line. -// -// The command line syntax is: -// -// test_task [num_tasks] [num_threads] [num_iterations] - -#include "ace/Task.h" -#include "ace/Service_Config.h" - - -#if defined (ACE_HAS_THREADS) - -#include "ace/Task.h" - -class Invoker_Task : public ACE_Task<ACE_MT_SYNCH> -{ -public: - Invoker_Task (ACE_Thread_Manager *thr_mgr, - int n_tasks, - int n_threads, - int n_iterations); - virtual int svc (void); - // creats <n_tasks> and wait for them to finish - -private: - int n_tasks_; - // Number of tasks to start. - int n_threads_; - // Number of threads per task. - int n_iterations_; - // Number of iterations per thread. -}; - -class Worker_Task : public ACE_Task<ACE_MT_SYNCH> -{ -public: - Worker_Task (ACE_Thread_Manager *thr_mgr, - int n_threads, - int n_iterations); - virtual int svc (void); - // Does a small work... - virtual int open (void * = NULL); -private: - static int workers_count_; - int index_; - int n_threads_; - int n_iterations_; - - // = Not needed for this test. - virtual int close (u_long) { return 0; } - virtual int put (ACE_Message_Block *, ACE_Time_Value *) { return 0; } -}; - -int Worker_Task::workers_count_ = 1; - -Worker_Task::Worker_Task (ACE_Thread_Manager *thr_mgr, - int n_threads, - int n_iterations) - : n_threads_ (n_threads), - n_iterations_ (n_iterations), - ACE_Task<ACE_MT_SYNCH> (thr_mgr) -{ - index_ = workers_count_++; -} - -int -Worker_Task::open (void *) -{ - // Create worker threads. - int rc = this->activate (THR_NEW_LWP, n_threads_, 0, 0, -1, this); - - if (rc == -1) - ACE_ERROR ((LM_ERROR, "%p\n", "activate failed")); - - return rc; -} - -int -Worker_Task::svc (void) -{ - ACE_DEBUG ((LM_DEBUG, " (%t) in worker %d\n", index_)); - - for (int iterations = 1; - iterations <= this->n_iterations_; - iterations++) - { - ACE_DEBUG ((LM_DEBUG, " (%t) in iteration %d\n", iterations)); - ACE_OS::sleep (0); - } - - ACE_DEBUG ((LM_DEBUG, " (%t) worker %d ends\n", index_)); - - return 0; -} - -Invoker_Task::Invoker_Task (ACE_Thread_Manager *thr_mgr, - int n_tasks, - int n_threads, - int n_iterations) - : n_tasks_ (n_tasks), - n_threads_ (n_threads), - n_iterations_ (n_iterations), - ACE_Task<ACE_MT_SYNCH> (thr_mgr) -{ - // Create worker threads. - if (this->activate (THR_NEW_LWP, 1, 0, 0, -1, this) == -1) - ACE_ERROR ((LM_ERROR, "%p\n", "activate failed")); -} - -// Iterate <n_iterations> time printing off a message and "waiting" -// for all other threads to complete this iteration. - -int -Invoker_Task::svc (void) -{ - // Note that the ACE_Task::svc_run () method automatically adds us to - // the Thread_Manager when the thread begins. - - ACE_Thread_Manager *thr_mgr = ACE_Service_Config::thr_mgr (); - Worker_Task **pTask = new Worker_Task* [n_tasks_]; - - for (int task = 0; - task < this->n_tasks_; - task++) - { - ACE_DEBUG ((LM_DEBUG, " (%t) in task %d\n", task+1)); - pTask[task] = new Worker_Task (thr_mgr, n_threads_, n_iterations_); - pTask[task]->open (); - } - - // Set all tasks to be one group - ACE_DEBUG ((LM_DEBUG, " (%t) setting tasks group id\n")); - for (task = 0; - task < this->n_tasks_; - task++) - if (thr_mgr->set_grp (pTask[task], 1) == -1) - ACE_ERROR ((LM_DEBUG, " (%t) %p\n", "set_grp")); - - int nTasks = thr_mgr->num_tasks_in_group (1); - cout << "Number of tasks in group 1: " << nTasks << endl; - - // Wait for 1 second and then suspend every thread in the group. - ACE_OS::sleep (1); - ACE_DEBUG ((LM_DEBUG, " (%t) suspending group\n")); - if (thr_mgr->suspend_grp (1) == -1) - ACE_ERROR ((LM_DEBUG, " (%t) %p\n", "suspend_grp")); - - // Wait for 5 more second and then resume every thread in the - // group. - ACE_OS::sleep (ACE_Time_Value (5)); - - // @QTSK This ACE_DEBUG statement blows us away! can't understand why - ACE_DEBUG ((LM_DEBUG, " (%t) resuming group\n")); - if (thr_mgr->resume_grp (1) == -1) - ACE_ERROR ((LM_DEBUG, " (%t) %p\n", "resume_grp")); - - - // Wait for all the tasks to reach their exit point. - thr_mgr->wait (); - - // Note that the ACE_Task::svc_run () method automatically removes us - // from the Thread_Manager when the thread exits. - - return 0; -} - -// Default number of tasks and iterations. -static const int DEFAULT_TASKS = 4; -static const int DEFAULT_ITERATIONS = 5; - -int -main (int argc, char *argv[]) -{ - int n_tasks = argc > 1 ? ACE_OS::atoi (argv[1]) : DEFAULT_TASKS; - int n_threads = argc > 2 ? ACE_OS::atoi (argv[2]) : ACE_DEFAULT_THREADS; - int n_iterations = argc > 3 ? ACE_OS::atoi (argv[3]) : DEFAULT_ITERATIONS; - - // Since ACE_Thread_Manager can only wait for all threads, we'll have - // special manager for the Invoker_Task. - ACE_Thread_Manager invoker_manager; - - Invoker_Task invoker (&invoker_manager, - n_tasks, - n_threads, - n_iterations); - - // Wait for 1 second and then suspend the invoker task - ACE_OS::sleep (1); - ACE_DEBUG ((LM_DEBUG, " (%t) suspending invoker task\n")); - - if (invoker_manager.suspend_task (&invoker) == -1) - ACE_ERROR ((LM_DEBUG, " (%t) %p\n", "suspend_task")); - - // Wait for 5 more second and then resume the invoker task. - ACE_OS::sleep (ACE_Time_Value (5)); - - // @QTSK This ACE_DEBUG statement blows us away! can't understand why - ACE_DEBUG ((LM_DEBUG, " (%t) resuming invoker task\n")); - if (invoker_manager.resume_task (&invoker) == -1) - ACE_ERROR ((LM_DEBUG, " (%t) %p\n", "resume_task")); - - - // Wait for all the threads to reach their exit point. - invoker_manager.wait (); - - // @QTSK This ACE_DEBUG statement blows us away! can't understand why - ACE_DEBUG ((LM_DEBUG, " (%t) done\n")); - return 0; -} -#else -int -main (int, char *[]) -{ - ACE_ERROR ((LM_ERROR, "threads not supported on this platform\n")); - return 0; -} -#endif /* ACE_HAS_THREADS */ |