| /* $Id$ |
| */ |
| #include "test.h" |
| #include <pj/os.h> |
| #include <pj/log.h> |
| |
| |
| /** |
| * \page page_pjlib_timestamp_test Test: Timestamp |
| * |
| * This file provides implementation of timestamp_test() |
| * |
| * \section timestamp_test_sec Scope of the Test |
| * |
| * This tests whether timestamp API works. |
| * |
| * API tested: |
| * - pj_get_timestamp_freq() |
| * - pj_get_timestamp() |
| * - pj_elapsed_usec() |
| * - PJ_LOG() |
| * |
| * |
| * This file is <b>pjlib-test/timestamp.c</b> |
| * |
| * \include pjlib-test/timestamp.c |
| */ |
| |
| #if INCLUDE_TIMESTAMP_TEST |
| |
| #define THIS_FILE "timestamp" |
| |
| int timestamp_test(void) |
| { |
| enum { CONSECUTIVE_LOOP = 1000 }; |
| volatile unsigned i; |
| pj_timestamp freq, t1, t2; |
| unsigned elapsed; |
| pj_status_t rc; |
| |
| PJ_LOG(3,(THIS_FILE, "...Testing timestamp (high res time)")); |
| |
| /* Get and display timestamp frequency. */ |
| if ((rc=pj_get_timestamp_freq(&freq)) != PJ_SUCCESS) { |
| app_perror("...ERROR: get timestamp freq", rc); |
| return -1000; |
| } |
| |
| PJ_LOG(3,(THIS_FILE, "....frequency: hiword=%lu loword=%lu", |
| freq.u32.hi, freq.u32.lo)); |
| |
| PJ_LOG(3,(THIS_FILE, "...checking if time can run backwards (pls wait)..")); |
| |
| /* |
| * Check if consecutive readings should yield timestamp value |
| * that is bigger than previous value. |
| * First we get the first timestamp. |
| */ |
| rc = pj_get_timestamp(&t1); |
| if (rc != PJ_SUCCESS) { |
| app_perror("...ERROR: get timestamp", rc); |
| return -1001; |
| } |
| for (i=0; i<CONSECUTIVE_LOOP; ++i) { |
| /* |
| volatile unsigned j; |
| for (j=0; j<1000; ++j) |
| ; |
| */ |
| pj_thread_sleep(1); |
| rc = pj_get_timestamp(&t2); |
| if (rc != PJ_SUCCESS) { |
| app_perror("...ERROR: get timestamp", rc); |
| return -1002; |
| } |
| /* compare t2 with t1, expecting t2 >= t1. */ |
| if (t2.u32.hi < t1.u32.hi || |
| (t2.u32.hi == t1.u32.hi && t2.u32.lo < t1.u32.lo)) |
| { |
| PJ_LOG(3,(THIS_FILE, "...ERROR: timestamp runs backwards!")); |
| return -1003; |
| } |
| } |
| |
| /* |
| * Simple test to time some loop. |
| */ |
| PJ_LOG(3,(THIS_FILE, "....testing simple 1000000 loop")); |
| |
| |
| /* Mark start time. */ |
| if ((rc=pj_get_timestamp(&t1)) != PJ_SUCCESS) { |
| app_perror("....error: cat't get timestamp", rc); |
| return -1010; |
| } |
| |
| /* Loop.. */ |
| for (i=0; i<1000000; ++i) |
| ; |
| |
| /* Mark end time. */ |
| pj_get_timestamp(&t2); |
| |
| /* Get elapsed time in usec. */ |
| elapsed = pj_elapsed_usec(&t1, &t2); |
| PJ_LOG(3,(THIS_FILE, "....elapsed: %u usec", (unsigned)elapsed)); |
| |
| /* See if elapsed time is reasonable. */ |
| if (elapsed < 1 || elapsed > 100000) { |
| PJ_LOG(3,(THIS_FILE, "....error: elapsed time outside window (%u, " |
| "t1.u32.hi=%u, t1.u32.lo=%u, " |
| "t2.u32.hi=%u, t2.u32.lo=%u)", |
| elapsed, |
| t1.u32.hi, t1.u32.lo, t2.u32.hi, t2.u32.lo)); |
| return -1030; |
| } |
| return 0; |
| } |
| |
| |
| #else |
| /* To prevent warning about "translation unit is empty" |
| * when this test is disabled. |
| */ |
| int dummy_timestamp_test; |
| #endif /* INCLUDE_TIMESTAMP_TEST */ |
| |