diff options
Diffstat (limited to 'libs/cputimeinstate/testtimeinstate.cpp')
| -rw-r--r-- | libs/cputimeinstate/testtimeinstate.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libs/cputimeinstate/testtimeinstate.cpp b/libs/cputimeinstate/testtimeinstate.cpp index 6ccc6cafb6..81f6a585ab 100644 --- a/libs/cputimeinstate/testtimeinstate.cpp +++ b/libs/cputimeinstate/testtimeinstate.cpp @@ -40,6 +40,9 @@ namespace bpf { static constexpr uint64_t NSEC_PER_SEC = 1000000000; 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; class TimeInStateTest : public testing::Test { @@ -576,7 +579,7 @@ uint64_t timeNanos() { // Keeps CPU busy with some number crunching void useCpu() { - long sum = 0; + sum = 0; for (int i = 0; i < 100000; i++) { sum *= i; } |