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Merge pull request #9186 from tkem/fix/ticker-read-us-race-cond 

Fix ticker_read_us() race condition.
pull/9225/head
Martin Kojtal 2019-01-02 09:19:02 +00:00 committed by GitHub
parent d7497a82dd b0a18b32a0
commit b4f1c25767
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1 changed files with 4 additions and 1 deletions
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5
hal/mbed_ticker_api.c
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@ -416,13 +416,16 @@ timestamp_t ticker_read(const ticker_data_t *const ticker)
us_timestamp_t ticker_read_us(const ticker_data_t *const ticker)
{
us_timestamp_t ret;
initialize(ticker);
core_util_critical_section_enter();
update_present_time(ticker);
ret = ticker->queue->present_time;
core_util_critical_section_exit();
return ticker->queue->present_time;
return ret;
}
int ticker_get_next_timestamp(const ticker_data_t *const data, timestamp_t *timestamp)