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Commit 1ac79cbd authored by Mark Salyzyn's avatar Mark Salyzyn
Browse files

liblog: Add BM_is_loggable benchmark

- On a N9 64-bit benchmark, the __android_log_is_loggable overhead
  is roughly 500ns (1/2 of a syscall?)

Bug: 19544788
Bug: 17760225
Bug: 20416721
Change-Id: Ib9e4d06d96e1b19ca5d459e569ead451ef47a9c0
parent 659b7d63
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+14 −0
Original line number Original line Diff line number Diff line
@@ -266,3 +266,17 @@ static void BM_log_delay(int iters) {
    android_logger_list_free(logger_list);
    android_logger_list_free(logger_list);
}
}
BENCHMARK(BM_log_delay);
BENCHMARK(BM_log_delay);

/*
 *	Measure the time it takes for __android_log_is_loggable.
 */
static void BM_is_loggable(int iters) {
    StartBenchmarkTiming();

    for (int i = 0; i < iters; ++i) {
        __android_log_is_loggable(ANDROID_LOG_WARN, "logd", ANDROID_LOG_VERBOSE);
    }

    StopBenchmarkTiming();
}
BENCHMARK(BM_is_loggable);