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src/hotspot/share/gc/shared/workgroup.cpp
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@@ -151,22 +151,22 @@
WorkData worker_wait_for_task() {
// Wait for the coordinator to dispatch a task.
_start_semaphore->wait();
- uint num_started = Atomic::add(1u, &_started);
+ uint num_started = Atomic::add(&_started, 1u);
// Subtract one to get a zero-indexed worker id.
uint worker_id = num_started - 1;
return WorkData(_task, worker_id);
}
void worker_done_with_task() {
// Mark that the worker is done with the task.
// The worker is not allowed to read the state variables after this line.
- uint not_finished = Atomic::sub(1u, &_not_finished);
+ uint not_finished = Atomic::sub(&_not_finished, 1u);
// The last worker signals to the coordinator that all work is completed.
if (not_finished == 0) {
_end_semaphore->signal();
}
@@ -424,11 +424,11 @@
bool SubTasksDone::try_claim_task(uint t) {
assert(t < _n_tasks, "bad task id.");
uint old = _tasks[t];
if (old == 0) {
- old = Atomic::cmpxchg(1u, &_tasks[t], 0u);
+ old = Atomic::cmpxchg(&_tasks[t], 0u, 1u);
}
bool res = old == 0;
#ifdef ASSERT
if (res) {
assert(_claimed < _n_tasks, "Too many tasks claimed; missing clear?");
@@ -441,11 +441,11 @@
void SubTasksDone::all_tasks_completed(uint n_threads) {
uint observed = _threads_completed;
uint old;
do {
old = observed;
- observed = Atomic::cmpxchg(old+1, &_threads_completed, old);
+ observed = Atomic::cmpxchg(&_threads_completed, old, old+1);
} while (observed != old);
// If this was the last thread checking in, clear the tasks.
uint adjusted_thread_count = (n_threads == 0 ? 1 : n_threads);
if (observed + 1 == adjusted_thread_count) {
clear();
@@ -469,11 +469,11 @@
}
bool SequentialSubTasksDone::try_claim_task(uint& t) {
t = _n_claimed;
while (t < _n_tasks) {
- uint res = Atomic::cmpxchg(t+1, &_n_claimed, t);
+ uint res = Atomic::cmpxchg(&_n_claimed, t, t+1);
if (res == t) {
return true;
}
t = res;
}
@@ -481,11 +481,11 @@
}
bool SequentialSubTasksDone::all_tasks_completed() {
uint complete = _n_completed;
while (true) {
- uint res = Atomic::cmpxchg(complete+1, &_n_completed, complete);
+ uint res = Atomic::cmpxchg(&_n_completed, complete, complete+1);
if (res == complete) {
break;
}
complete = res;
}
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