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Diffstat (limited to 'examples/Threads/test_thread_pool.cpp')
| -rw-r--r-- | examples/Threads/test_thread_pool.cpp | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/examples/Threads/test_thread_pool.cpp b/examples/Threads/test_thread_pool.cpp deleted file mode 100644 index 68741156b83..00000000000 --- a/examples/Threads/test_thread_pool.cpp +++ /dev/null @@ -1,214 +0,0 @@ -// This test program illustrates how the ACE task synchronization -// $Id$ - -// mechanisms work in conjunction with the ACE_Task and the -// ACE_Thread_Manager. If the manual flag is not set input comes from -// stdin until the user enters a return only. This stops all workers -// via a message block of length 0. This is an alternative shutdown of -// workers compared to queue deactivate. -// -// This code is original based on a test program written by Karlheinz -// Dorn. It was modified to utilize more "ACE" features by Doug Schmidt. - -#include "ace/Task.h" -#include "ace/Service_Config.h" - -#include "ace/Task.h" - -#if defined (ACE_HAS_THREADS) - -// Number of iterations to run the test. -static size_t n_iterations = 100; - -class Thread_Pool : public ACE_Task<ACE_MT_SYNCH> -{ -public: - Thread_Pool (ACE_Thread_Manager *thr_mgr, int n_threads); - - virtual int svc (void); - // Iterate <n_iterations> time printing off a message and "waiting" - // for all other threads to complete this iteration. - - virtual int put (ACE_Message_Block *mb, ACE_Time_Value *tv=0); - // This allows the producer to pass messages to the <Thread_Pool>. - -private: - virtual int close (u_long); - - // = Not needed for this test. - virtual int open (void *) { return 0; } -}; - -int -Thread_Pool::close (u_long) -{ - ACE_DEBUG ((LM_DEBUG, "(%t) close of worker\n")); - return 0; -} - -Thread_Pool::Thread_Pool (ACE_Thread_Manager *thr_mgr, - int n_threads) - : ACE_Task<ACE_MT_SYNCH> (thr_mgr) -{ - // Create worker threads. - if (this->activate (THR_NEW_LWP, n_threads) == -1) - ACE_ERROR ((LM_ERROR, "%p\n", "activate failed")); -} - -// Simply enqueue the Message_Block into the end of the queue. - -int -Thread_Pool::put (ACE_Message_Block *mb, ACE_Time_Value *tv) -{ - return this->putq (mb, tv); -} - -// Iterate <n_iterations> time printing off a message and "waiting" -// for all other threads to complete this iteration. - -int -Thread_Pool::svc (void) -{ - // Note that the ACE_Task::svc_run () method automatically adds us to - // the Thread_Manager when the thread begins. - - int result = 0; - int count = 1; - - // Keep looping, reading a message out of the queue, until we get a - // message with a length == 0, which signals us to quit. - - for (;; count++) - { - ACE_Message_Block *mb; - - ACE_DEBUG ((LM_DEBUG, "(%t) in iteration %d before getq ()\n", count)); - - if (this->getq (mb) == -1) - { - ACE_ERROR ((LM_ERROR, - "(%t) in iteration %d, got result -1, exiting\n", count)); - break; - } - - int length = mb->length (); - - if (length > 0) - ACE_DEBUG ((LM_DEBUG, - "(%t) in iteration %d, length = %d, text = \"%*s\"\n", - count, length, length - 1, mb->rd_ptr ())); - - // We're responsible for deallocating this. - delete mb; - - if (length == 0) - { - ACE_DEBUG ((LM_DEBUG, - "(%t) in iteration %d, got NULL message, exiting\n", - count)); - break; - } - } - - // Note that the ACE_Task::svc_run () method automatically removes - // us from the Thread_Manager when the thread exits. - return 0; -} - -static void -produce (Thread_Pool &thread_pool) -{ - ACE_DEBUG ((LM_DEBUG, "(%t) producer start, dumping the Thread_Pool\n")); - thread_pool.dump (); - - for (int n;;) - { - // Allocate a new message. - ACE_Message_Block *mb = new ACE_Message_Block (BUFSIZ); - -#if defined (manual) - ACE_DEBUG ((LM_DEBUG, - "(%t) press chars and enter to put a new message into task queue...")); - n = ACE_OS::read (ACE_STDIN, mb->rd_ptr (), mb->size ()); -#else // Automatically generate messages. - static int count = 0; - - ACE_OS::sprintf (mb->rd_ptr (), "%d\n", count); - - n = ACE_OS::strlen (mb->rd_ptr ()); - - if (count == n_iterations) - n = 1; // Indicate that we need to shut down. - else - count++; - - if (count == 0 || (count % 20 == 0)) - ACE_OS::sleep (1); -#endif /* manual */ - if (n > 1) - { - // Send a normal message to the waiting threads and continue - // producing. - mb->wr_ptr (n); - - // Pass the message to the Thread_Pool. - if (thread_pool.put (mb) == -1) - ACE_ERROR ((LM_ERROR, " (%t) %p\n", "put")); - } - else - { - // Send a shutdown message to the waiting threads and exit. - ACE_DEBUG ((LM_DEBUG, "\n(%t) start loop, dump of task:\n")); - thread_pool.dump (); - - for (int i = thread_pool.thr_count (); i > 0; i--) - { - ACE_DEBUG ((LM_DEBUG, - "(%t) EOF, enqueueing NULL block for thread = %d\n", - i)); - - // Enqueue a NULL message to flag each consumer to - // shutdown. - if (thread_pool.put (new ACE_Message_Block) == -1) - ACE_ERROR ((LM_ERROR, " (%t) %p\n", "put")); - } - - ACE_DEBUG ((LM_DEBUG, "\n(%t) end loop, dump of task:\n")); - thread_pool.dump (); - break; - } - } -} - -int -main (int argc, char *argv[]) -{ - int n_threads = argc > 1 ? ACE_OS::atoi (argv[1]) : ACE_DEFAULT_THREADS; - n_iterations = argc > 2 ? ACE_OS::atoi (argv[2]) : n_iterations; - - ACE_DEBUG ((LM_DEBUG, "(%t) argc = %d, threads = %d\n", - argc, n_threads)); - - // Create the worker tasks. - Thread_Pool thread_pool (ACE_Service_Config::thr_mgr (), - n_threads); - - // Create work for the worker tasks to process in their own threads. - produce (thread_pool); - - // Wait for all the threads to reach their exit point. - - ACE_DEBUG ((LM_DEBUG, "(%t) waiting with thread manager...\n")); - ACE_Service_Config::thr_mgr ()->wait (); - - ACE_DEBUG ((LM_DEBUG, "(%t) destroying worker tasks and exiting...\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 */ |