Hi, please review this patch to use double-checked locking to avoid synchronization overhead on repeated access to the declaredAnnotations field in Executable and Field.
webrev: http://cr.openjdk.java.net/~redestad/8068736/webrev.00 bug: https://bugs.openjdk.java.net/browse/JDK-8068736 Testing: jtreg java/lang Benchmarking: - no significant changes in a small set of SPEC benchmarks - up to 4x in micros focused on repeated access to the declaredAnnotations field, both in single- and multithreaded setups - less than 5% cost (not statistically significant) on micros accessing the declaredAnnotation map of a method only once. /Claes
