113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/* BEGIN_HEADER */
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/* This test module exercises the platform_* module. Since, depending on the
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* underlying operating system, the time routines are not always reliable,
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* this suite only performs very basic sanity checks of the timing API.
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*/
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#include <limits.h>
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#if defined(MBEDTLS_HAVE_TIME)
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#include "mbedtls/platform_time.h"
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#ifdef WIN32
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#include <windows.h>
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#elif _POSIX_C_SOURCE >= 199309L
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#include <time.h>
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#else
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#include <unistd.h>
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#endif
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void sleep_ms(int milliseconds)
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{
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#ifdef WIN32
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Sleep(milliseconds);
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#elif _POSIX_C_SOURCE >= 199309L
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struct timespec ts;
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ts.tv_sec = milliseconds / 1000;
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ts.tv_nsec = (milliseconds % 1000) * 1000000;
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nanosleep(&ts, NULL);
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#else
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usleep(milliseconds * 1000);
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#endif
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}
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#endif
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES */
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/* END_DEPENDENCIES */
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/* BEGIN_CASE depends_on:MBEDTLS_HAVE_TIME */
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void time_get_milliseconds()
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{
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mbedtls_ms_time_t current = mbedtls_ms_time();
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(void) current;
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/* This goto is added to avoid warnings from the generated code. */
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goto exit;
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_HAVE_TIME */
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void time_get_seconds()
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{
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mbedtls_time_t current = mbedtls_time(NULL);
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(void) current;
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/* This goto is added to avoid warnings from the generated code. */
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goto exit;
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_HAVE_TIME */
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void time_delay_milliseconds(int delay_ms)
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{
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mbedtls_ms_time_t current = mbedtls_ms_time();
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mbedtls_ms_time_t elapsed_ms;
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sleep_ms(delay_ms);
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elapsed_ms = mbedtls_ms_time() - current;
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TEST_ASSERT(elapsed_ms >= delay_ms && elapsed_ms < 4000 + delay_ms);
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/* This goto is added to avoid warnings from the generated code. */
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goto exit;
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_HAVE_TIME */
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/*
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* WARNING: DO NOT ENABLE THIS TEST. We keep the code here to document the
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* reason.
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*
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* The test often failed on the CI. See #1517. CI failures cannot be
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* completely avoided due to out-of-sync clock sources.
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*/
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void time_delay_seconds(int delay_secs)
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{
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mbedtls_time_t current = mbedtls_time(NULL);
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mbedtls_time_t elapsed_secs;
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sleep_ms(delay_secs * 1000);
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elapsed_secs = mbedtls_time(NULL) - current;
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/*
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* `mbedtls_time()` was defined as c99 function `time()`, returns the number
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* of seconds since the Epoch. And it is affected by discontinuous changes
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* from automatic drift adjustment or time setting system call. The POSIX.1
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* specification for clock_settime says that discontinuous changes in
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* CLOCK_REALTIME should not affect `nanosleep()`.
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*
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* If discontinuous changes occur during `nanosleep()`, we will get
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* `elapsed_secs < delay_secs` for backward or `elapsed_secs > delay_secs`
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* for forward.
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*
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* The following tolerance windows cannot be guaranteed.
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* PLEASE DO NOT ENABLE IT IN CI TEST.
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*/
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TEST_ASSERT(elapsed_secs - delay_secs >= -1 &&
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elapsed_secs - delay_secs < 4);
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/* This goto is added to avoid warnings from the generated code. */
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goto exit;
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}
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/* END_CASE */
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