src/hotspot/share/memory/metaspace.cpp

@@ -160,11 +160,11 @@
   }
 
   if (can_retry != NULL) {
     *can_retry = true;
   }
-  size_t prev_value = Atomic::cmpxchg(new_value, &_capacity_until_GC, old_capacity_until_GC);
+  size_t prev_value = Atomic::cmpxchg(&_capacity_until_GC, old_capacity_until_GC, new_value);
 
   if (old_capacity_until_GC != prev_value) {
     return false;
   }
 

@@ -178,11 +178,11 @@
 }
 
 size_t MetaspaceGC::dec_capacity_until_GC(size_t v) {
   assert_is_aligned(v, Metaspace::commit_alignment());
 
-  return Atomic::sub(v, &_capacity_until_GC);
+  return Atomic::sub(&_capacity_until_GC, v);
 }
 
 void MetaspaceGC::initialize() {
   // Set the high-water mark to MaxMetapaceSize during VM initializaton since
   // we can't do a GC during initialization.

@@ -392,19 +392,19 @@
          size_now, words);
   *pstat = size_now - words;
 }
 
 static void inc_stat_atomically(volatile size_t* pstat, size_t words) {
-  Atomic::add(words, pstat);
+  Atomic::add(pstat, words);
 }
 
 static void dec_stat_atomically(volatile size_t* pstat, size_t words) {
   const size_t size_now = *pstat;
   assert(size_now >= words, "About to decrement counter below zero "
          "(current value: " SIZE_FORMAT ", decrement value: " SIZE_FORMAT ".",
          size_now, words);
-  Atomic::sub(words, pstat);
+  Atomic::sub(pstat, words);
 }
 
 void MetaspaceUtils::dec_capacity(Metaspace::MetadataType mdtype, size_t words) {
   dec_stat_nonatomically(&_capacity_words[mdtype], words);
 }