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Diffstat (limited to 'tests/Priority_Buffer_Test.cpp')
-rw-r--r-- | tests/Priority_Buffer_Test.cpp | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/tests/Priority_Buffer_Test.cpp b/tests/Priority_Buffer_Test.cpp deleted file mode 100644 index b7fb985d6ce..00000000000 --- a/tests/Priority_Buffer_Test.cpp +++ /dev/null @@ -1,151 +0,0 @@ -// $Id$ - -// ============================================================================ -// -// = LIBRARY -// tests -// -// = FILENAME -// Priority_Buffer_Test.cpp -// -// = DESCRIPTION -// This is a simple test to illustrate the priority mechanism of -// ACE Message_Queues. The producer uses an ASX Message_Queue to -// enqueue a bunch of messages with different priorities which -// are then dequeued by the consumer. -// -// = AUTHOR -// Prashant Jain and Doug Schmidt -// -// ============================================================================ - -#include "ace/Message_Queue.h" -#include "ace/Thread_Manager.h" -#include "test_config.h" - -#if defined (ACE_HAS_THREADS) - -// Global message count. -static int count = 0; - -// Make the queue be capable of being *very* large. -static const long max_queue = LONG_MAX; - -// The consumer dequeues a message from the ACE_Message_Queue, writes -// the message to the stderr stream, and deletes the message. The -// producer sends a 0-sized message to inform the consumer to stop -// reading and exit. - -static void * -consumer (void *args) -{ - ACE_Message_Queue<ACE_MT_SYNCH> *msg_queue = (ACE_Message_Queue<ACE_MT_SYNCH> *) args; - - u_long cur_priority = 27; - int local_count = 0; - - // Keep looping, reading a message out of the queue, until we - // get a message with a length == 0, which signals us to quit. - for (char c = 'z'; ; c--) - { - ACE_Message_Block *mb = 0; - - int result = msg_queue->dequeue_head (mb); - - if (result == -1) - break; - - local_count++; - - int length = mb->length (); - ACE_ASSERT (mb->msg_priority () < cur_priority); - cur_priority = mb->msg_priority (); - - if (length > 0) - ACE_ASSERT (c == *mb->rd_ptr ()); - - // Free up the buffer memory and the Message_Block. Note that - // the destructor of Message Block will delete the the actual - // buffer. - mb->release (); - - if (length == 0) - break; - } - ACE_ASSERT (local_count == count); - return 0; -} - -// The producer reads data from the stdin stream, creates a message, -// and then queues the message in the message list, where it is -// removed by the consumer thread. A 0-sized message is enqueued when -// there is no more data to read. The consumer uses this as a flag to -// know when to exit. - -static void * -producer (void *args) -{ - ACE_Message_Queue<ACE_MT_SYNCH> *msg_queue = (ACE_Message_Queue<ACE_MT_SYNCH> *) args; - - ACE_Message_Block *mb = 0; - - for (char *c = ACE_ALPHABET; *c != '\0'; c++) - { - count++; - - // Allocate a new message - - ACE_NEW_RETURN (mb, ACE_Message_Block (1), 0); - *mb->rd_ptr () = *c; - - // Set the priority. - mb->msg_priority (count); - mb->wr_ptr (1); - - // Enqueue in priority order. - if (msg_queue->enqueue_prio (mb) == -1) - ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n", "put_next"), 0); - } - - // Now send a 0-sized shutdown message to the other thread - ACE_NEW_RETURN (mb, ACE_Message_Block ((size_t) 0), 0); - - if (msg_queue->enqueue_tail (mb) == -1) - ACE_ERROR ((LM_ERROR, "(%t) %p\n", "put_next")); - - count++; - - // Now read all the items out in priority order (i.e., ordered by - // the size of the lines!). - consumer (msg_queue); - - return 0; -} - -#endif /* ACE_HAS_THREADS */ - -// Spawn off one thread that copies stdin to stdout in order of the -// size of each line. - -int -main (int, char *[]) -{ - ACE_START_TEST ("Priority_Buffer_Test"); - -#if defined (ACE_HAS_THREADS) - // Message queue. - ACE_Message_Queue<ACE_MT_SYNCH> msg_queue (max_queue); - - if (ACE_Thread_Manager::instance ()->spawn (ACE_THR_FUNC (producer), - (void *) &msg_queue, - THR_NEW_LWP | THR_DETACHED) == -1) - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "spawn"), 1); - - // Wait for producer and consumer threads to exit. - ACE_Thread_Manager::instance ()->wait (); -#else - ACE_ERROR ((LM_ERROR, "threads not supported on this platform\n")); -#endif /* ACE_HAS_THREADS */ - ACE_END_TEST; - return 0; -} |