--- a/src/hotspot/share/jfr/recorder/stringpool/jfrStringPoolBuffer.cpp Wed May 16 12:38:34 2018 +0200
+++ b/src/hotspot/share/jfr/recorder/stringpool/jfrStringPoolBuffer.cpp Wed May 16 12:38:35 2018 +0200
@@ -55,7 +55,17 @@
}
void JfrStringPoolBuffer::increment(uint64_t value) {
+#if !(defined(ARM) || defined(IA32))
Atomic::add(value, &_string_count_pos);
+#else
+ // TODO: This should be fixed in Atomic::add handling for 32-bit platforms,
+ // see JDK-8203283. We workaround the absence of support right here.
+ uint64_t cur, val;
+ do {
+ cur = Atomic::load(&_string_count_top);
+ val = cur + value;
+ } while (Atomic::cmpxchg(val, &_string_count_pos, cur) != cur);
+#endif
}
void JfrStringPoolBuffer::set_string_top(uint64_t value) {