void NMethodSweeper::possibly_sweep() { assert(JavaThread::current()->thread_state() == _thread_in_vm, "must run in vm mode"); if ((!MethodFlushing) || (!_do_sweep)) return; if (_invocations > 0) { // Only one thread at a time will sweep jint old = Atomic::cmpxchg( 1, &_sweep_started, 0 ); if (old != 0) { return; } if (_invocations > 0) { sweep_code_cache(); _invocations--; } _sweep_started = 0; } }
void NMethodSweeper::possibly_sweep() { assert(JavaThread::current()->thread_state() == _thread_in_vm, "must run in vm mode"); if ((!MethodFlushing) || (!_do_sweep)) return; if (_invocations > 0) { // Only one thread at a time will sweep jint old = Atomic::cmpxchg( 1, &_sweep_started, 0 ); if (old != 0) { return; } #ifdef ASSERT if (LogSweeper && _records == NULL) { // Create the ring buffer for the logging code _records = NEW_C_HEAP_ARRAY(SweeperRecord, SweeperLogEntries, mtGC); memset(_records, 0, sizeof(SweeperRecord) * SweeperLogEntries); } #endif if (_invocations > 0) { sweep_code_cache(); _invocations--; } _sweep_started = 0; } }