| Benny Prijono | 4766ffe | 2005-11-01 17:56:59 +0000 | [diff] [blame] | 1 | /* $Id$ |
| Benny Prijono | dd859a6 | 2005-11-01 16:42:51 +0000 | [diff] [blame] | 2 | */ |
| 3 | #include "test.h" |
| 4 | #include <pj/os.h> |
| 5 | #include <pj/log.h> |
| 6 | |
| 7 | |
| 8 | /** |
| 9 | * \page page_pjlib_timestamp_test Test: Timestamp |
| 10 | * |
| 11 | * This file provides implementation of timestamp_test() |
| 12 | * |
| 13 | * \section timestamp_test_sec Scope of the Test |
| 14 | * |
| 15 | * This tests whether timestamp API works. |
| 16 | * |
| 17 | * API tested: |
| 18 | * - pj_get_timestamp_freq() |
| 19 | * - pj_get_timestamp() |
| 20 | * - pj_elapsed_usec() |
| 21 | * - PJ_LOG() |
| 22 | * |
| 23 | * |
| 24 | * This file is <b>pjlib-test/timestamp.c</b> |
| 25 | * |
| 26 | * \include pjlib-test/timestamp.c |
| 27 | */ |
| 28 | |
| 29 | #if INCLUDE_TIMESTAMP_TEST |
| 30 | |
| 31 | #define THIS_FILE "timestamp" |
| 32 | |
| 33 | int timestamp_test(void) |
| 34 | { |
| 35 | enum { CONSECUTIVE_LOOP = 1000 }; |
| 36 | volatile unsigned i; |
| 37 | pj_timestamp freq, t1, t2; |
| 38 | unsigned elapsed; |
| 39 | pj_status_t rc; |
| 40 | |
| 41 | PJ_LOG(3,(THIS_FILE, "...Testing timestamp (high res time)")); |
| 42 | |
| 43 | /* Get and display timestamp frequency. */ |
| 44 | if ((rc=pj_get_timestamp_freq(&freq)) != PJ_SUCCESS) { |
| 45 | app_perror("...ERROR: get timestamp freq", rc); |
| 46 | return -1000; |
| 47 | } |
| 48 | |
| 49 | PJ_LOG(3,(THIS_FILE, "....frequency: hiword=%lu loword=%lu", |
| 50 | freq.u32.hi, freq.u32.lo)); |
| 51 | |
| 52 | PJ_LOG(3,(THIS_FILE, "...checking if time can run backwards (pls wait)..")); |
| 53 | |
| 54 | /* |
| 55 | * Check if consecutive readings should yield timestamp value |
| 56 | * that is bigger than previous value. |
| 57 | * First we get the first timestamp. |
| 58 | */ |
| 59 | rc = pj_get_timestamp(&t1); |
| 60 | if (rc != PJ_SUCCESS) { |
| 61 | app_perror("...ERROR: get timestamp", rc); |
| 62 | return -1001; |
| 63 | } |
| 64 | for (i=0; i<CONSECUTIVE_LOOP; ++i) { |
| 65 | /* |
| 66 | volatile unsigned j; |
| 67 | for (j=0; j<1000; ++j) |
| 68 | ; |
| 69 | */ |
| 70 | pj_thread_sleep(1); |
| 71 | rc = pj_get_timestamp(&t2); |
| 72 | if (rc != PJ_SUCCESS) { |
| 73 | app_perror("...ERROR: get timestamp", rc); |
| 74 | return -1002; |
| 75 | } |
| 76 | /* compare t2 with t1, expecting t2 >= t1. */ |
| 77 | if (t2.u32.hi < t1.u32.hi || |
| 78 | (t2.u32.hi == t1.u32.hi && t2.u32.lo < t1.u32.lo)) |
| 79 | { |
| 80 | PJ_LOG(3,(THIS_FILE, "...ERROR: timestamp runs backwards!")); |
| 81 | return -1003; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * Simple test to time some loop. |
| 87 | */ |
| 88 | PJ_LOG(3,(THIS_FILE, "....testing simple 1000000 loop")); |
| 89 | |
| 90 | |
| 91 | /* Mark start time. */ |
| 92 | if ((rc=pj_get_timestamp(&t1)) != PJ_SUCCESS) { |
| 93 | app_perror("....error: cat't get timestamp", rc); |
| 94 | return -1010; |
| 95 | } |
| 96 | |
| 97 | /* Loop.. */ |
| 98 | for (i=0; i<1000000; ++i) |
| 99 | ; |
| 100 | |
| 101 | /* Mark end time. */ |
| 102 | pj_get_timestamp(&t2); |
| 103 | |
| 104 | /* Get elapsed time in usec. */ |
| 105 | elapsed = pj_elapsed_usec(&t1, &t2); |
| 106 | PJ_LOG(3,(THIS_FILE, "....elapsed: %u usec", (unsigned)elapsed)); |
| 107 | |
| 108 | /* See if elapsed time is reasonable. */ |
| 109 | if (elapsed < 1 || elapsed > 100000) { |
| 110 | PJ_LOG(3,(THIS_FILE, "....error: elapsed time outside window (%u, " |
| 111 | "t1.u32.hi=%u, t1.u32.lo=%u, " |
| 112 | "t2.u32.hi=%u, t2.u32.lo=%u)", |
| 113 | elapsed, |
| 114 | t1.u32.hi, t1.u32.lo, t2.u32.hi, t2.u32.lo)); |
| 115 | return -1030; |
| 116 | } |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | |
| 121 | #else |
| 122 | /* To prevent warning about "translation unit is empty" |
| 123 | * when this test is disabled. |
| 124 | */ |
| 125 | int dummy_timestamp_test; |
| 126 | #endif /* INCLUDE_TIMESTAMP_TEST */ |
| 127 | |