/* This test is designed to test the semaphore suspension and another thread resuming the same priority thread by doing a semaphore put. */ #include #include "tx_api.h" static unsigned long thread_0_counter = 0; static TX_THREAD thread_0; static unsigned long thread_1_counter = 0; static TX_THREAD thread_1; static unsigned long thread_2_counter = 0; static TX_THREAD thread_2; static TX_SEMAPHORE semaphore_0; /* Define thread prototypes. */ static void thread_0_entry(ULONG thread_input); static void thread_1_entry(ULONG thread_input); static void thread_2_entry(ULONG thread_input); /* Prototype for test control return. */ void test_control_return(UINT status); static void put_notify(TX_SEMAPHORE *semaphore_ptr) { /* Don't need to do anything in here... */ } /* Define what the initial system looks like. */ #ifdef CTEST void test_application_define(void *first_unused_memory) #else void threadx_semaphore_non_preemption_application_define(void *first_unused_memory) #endif { UINT status; CHAR *pointer; /* Put first available memory address into a character pointer. */ pointer = (CHAR *) first_unused_memory; /* Put system definition stuff in here, e.g. thread creates and other assorted create information. */ status = tx_thread_create(&thread_0, "thread 0", thread_0_entry, 1, pointer, TEST_STACK_SIZE_PRINTF, 16, 16, 100, TX_AUTO_START); pointer = pointer + TEST_STACK_SIZE_PRINTF; /* Check for status. */ if (status != TX_SUCCESS) { printf("Running Semaphore Non Preemption Test............................... ERROR #1\n"); test_control_return(1); } status = tx_thread_create(&thread_1, "thread 1", thread_1_entry, 1, pointer, TEST_STACK_SIZE_PRINTF, 16, 16, 100, TX_AUTO_START); pointer = pointer + TEST_STACK_SIZE_PRINTF; /* Check for status. */ if (status != TX_SUCCESS) { printf("Running Semaphore Non Preemption Test............................... ERROR #2\n"); test_control_return(1); } status = tx_thread_create(&thread_2, "thread 2", thread_2_entry, 2, pointer, TEST_STACK_SIZE_PRINTF, 16, 16, 100, TX_DONT_START); pointer = pointer + TEST_STACK_SIZE_PRINTF; /* Check for status. */ if (status != TX_SUCCESS) { printf("Running Semaphore Non Preemption Test............................... ERROR #3\n"); test_control_return(1); } /* Create a semaphore with an initial count of 0. */ status = tx_semaphore_create(&semaphore_0, "semaphore 0", 0); /* Check for status. */ if (status != TX_SUCCESS) { printf("Running Semaphore Non Preemption Test............................... ERROR #4\n"); test_control_return(1); } /* Setup the semaphore notify callback. */ status = tx_semaphore_put_notify(&semaphore_0, put_notify); #ifndef TX_DISABLE_NOTIFY_CALLBACKS /* Check for status. */ if (status != TX_SUCCESS) { printf("Running Semaphore Non Preemption Test............................... ERROR #5\n"); test_control_return(1); } #else /* Check for status. */ if (status != TX_FEATURE_NOT_ENABLED) { printf("Running Semaphore Non Preemption Test............................... ERROR #6\n"); test_control_return(1); } #endif } /* Define the test threads. */ static void thread_0_entry(ULONG thread_input) { UINT status; /* Inform user. */ printf("Running Semaphore Non Preemption Test............................... "); /* Increment thread 0 counter. */ thread_0_counter++; /* Perform a semaphore put and get, just to exercise the notify path of a non-resumption semaphore put. */ status = tx_semaphore_put(&semaphore_0); status += tx_semaphore_get(&semaphore_0, TX_NO_WAIT); /* Check status. */ if (status != TX_SUCCESS) { /* Semaphore error. */ printf("ERROR #7\n"); test_control_return(1); } /* Relinquish to make the other thread suspend on the semaphore. */ tx_thread_relinquish(); /* Make sure the other thread has run. */ if (thread_1_counter != 1) { /* Semaphore error. */ printf("ERROR #8\n"); test_control_return(1); } /* Place an instance on the semaphore, this should resume the other thread but not preempt this thread. */ status = tx_semaphore_put(&semaphore_0); /* Check the status and the run counter of the other thread. */ if ((status != TX_SUCCESS) || (thread_1_counter != 1)) { /* Semaphore error. */ printf("ERROR #9\n"); test_control_return(1); } /* Relinquish to allow the other thread to run. */ tx_thread_relinquish(); /* Make sure the other thread has run. */ if (thread_1_counter != 3) { /* Semaphore error. */ printf("ERROR #10\n"); test_control_return(1); } /* At this point, we need to resume thread 2 and relinquish in order to get that thread suspended on the semaphore as well. */ tx_thread_resume(&thread_2); tx_thread_relinquish(); /* Perform 2 semaphore put operations to resume both threads. */ status = tx_semaphore_put(&semaphore_0); status += tx_semaphore_put(&semaphore_0); /* Let both threads run again. */ tx_thread_relinquish(); /* Check the status and the run counter of the other thread. */ if ((status != TX_SUCCESS) || (thread_1_counter != 5) || (thread_2_counter != 3)) { /* Semaphore error. */ printf("ERROR #11\n"); test_control_return(1); } else { /* Successful test. */ printf("SUCCESS!\n"); test_control_return(0); } } static void thread_1_entry(ULONG thread_input) { UINT status; while(1) { /* Increment thread run counter. */ thread_1_counter++; /* Suspend on the semaphore. */ status = tx_semaphore_get(&semaphore_0, TX_WAIT_FOREVER); /* Did we get the right status? */ if (status == TX_SUCCESS) thread_1_counter++; } } static void thread_2_entry(ULONG thread_input) { UINT status; while(1) { /* Increment thread run counter. */ thread_2_counter++; /* Suspend on the semaphore. */ status = tx_semaphore_get(&semaphore_0, TX_WAIT_FOREVER); /* Did we get the right status? */ if (status == TX_SUCCESS) thread_2_counter++; } }