Function testingTriggerSpill

bolt/exec/Spill.cpp:571–580

  testingSpillCounter() = maxInjections;
}

TestScopedSpillInjection::~TestScopedSpillInjection() {
  testingSpillPct() = 0;
  testingSpillCounter() = 0;
}

bool testingTriggerSpill() {
  // Do not evaluate further if trigger is not set.
  if (testingSpillCounter() <= 0 || testingSpillPct() <= 0) {
    return false;
  }
  if (folly::Random::rand32() % 100 < testingSpillPct()) {
    return testingSpillCounter()-- > 0;