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/* $Id$
*/
#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 */
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