archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-24 04:54:40 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8087133: Improve sharing of native wrappers in SignatureHandlerLibrary

Browse source 
Fingerprint normalization for arm32

Reviewed-by: dholmes, coleenp
This commit is contained in:
Bertrand Delsart 2015-06-23 17:48:34 +02:00
parent f65b2271ab
commit bf69556039
3 changed files with 47 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

13
hotspot/src/share/vm/runtime/signature.hpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -63,6 +63,8 @@ class SignatureIterator: public ResourceObj {
// Fingerprinter.
enum {
static_feature_size = 1,
is_static_bit = 1,
result_feature_size = 4,
result_feature_mask = 0xF,
parameter_feature_size = 4,
@ -114,6 +116,15 @@ class SignatureIterator: public ResourceObj {
// Object types (begin indexes the first character of the entry, end indexes the first character after the entry)
virtual void do_object(int begin, int end) = 0;
virtual void do_array (int begin, int end) = 0;
static bool is_static(uint64_t fingerprint) {
assert(fingerprint != (uint64_t)CONST64(-1), "invalid fingerprint");
return fingerprint & is_static_bit;
}
static BasicType return_type(uint64_t fingerprint) {
assert(fingerprint != (uint64_t)CONST64(-1), "invalid fingerprint");
return (BasicType) ((fingerprint >> static_feature_size) & result_feature_mask);
}
};