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Commit b4aca6c7 authored by Neill Kapron's avatar Neill Kapron
Browse files

libtimeinstate: fix unused variable warning 



Move busy loop variable to static scope in the test and add used
attribute. This silences the unused variable warning when
building.

Test: manual
Change-Id: I56c7bccfd7a9ee5a2e530b220999c364ec8733c0
Signed-off-by: default avatarNeill Kapron <nkapron@google.com>
parent cf2f81a8

libs/cputimeinstate/testtimeinstate.cpp

+4 −1
Original line number Original line Diff line number Diff line
@@ -40,6 +40,9 @@ namespace bpf { 
static constexpr uint64_t NSEC_PER_SEC = 1000000000;

static constexpr uint64_t NSEC_PER_SEC = 1000000000;

static constexpr uint64_t NSEC_PER_YEAR = NSEC_PER_SEC * 60 * 60 * 24 * 365;

static constexpr uint64_t NSEC_PER_YEAR = NSEC_PER_SEC * 60 * 60 * 24 * 365;





// Declare busy loop variable globally to prevent removal during optimization

static long sum __attribute__((used)) = 0;



using std::vector;

using std::vector;





class TimeInStateTest : public testing::Test {

class TimeInStateTest : public testing::Test {
@@ -576,7 +579,7 @@ uint64_t timeNanos() { 




// Keeps CPU busy with some number crunching

// Keeps CPU busy with some number crunching

void useCpu() {

void useCpu() {

    long sum = 0;

    sum = 0;

    for (int i = 0; i < 100000; i++) {

    for (int i = 0; i < 100000; i++) {

        sum *= i;

        sum *= i;

    }

    }