Tue, 23 Nov 2010 13:22:55 -0800
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_CODE_COMPILEDIC_HPP
26 #define SHARE_VM_CODE_COMPILEDIC_HPP
28 #include "interpreter/linkResolver.hpp"
29 #include "oops/compiledICHolderKlass.hpp"
30 #include "oops/compiledICHolderOop.hpp"
31 #include "oops/klassOop.hpp"
32 #ifdef TARGET_ARCH_x86
33 # include "nativeInst_x86.hpp"
34 #endif
35 #ifdef TARGET_ARCH_sparc
36 # include "nativeInst_sparc.hpp"
37 #endif
38 #ifdef TARGET_ARCH_zero
39 # include "nativeInst_zero.hpp"
40 #endif
42 //-----------------------------------------------------------------------------
43 // The CompiledIC represents a compiled inline cache.
44 //
45 // In order to make patching of the inline cache MT-safe, we only allow the following
46 // transitions (when not at a safepoint):
47 //
48 //
49 // [1] --<-- Clean -->--- [1]
50 // / (null) \
51 // / \ /-<-\
52 // / [2] \ / \
53 // Interpreted ---------> Monomorphic | [3]
54 // (compiledICHolderOop) (klassOop) |
55 // \ / \ /
56 // [4] \ / [4] \->-/
57 // \->- Megamorphic -<-/
58 // (methodOop)
59 //
60 // The text in paranteses () refere to the value of the inline cache receiver (mov instruction)
61 //
62 // The numbers in square brackets refere to the kind of transition:
63 // [1]: Initial fixup. Receiver it found from debug information
64 // [2]: Compilation of a method
65 // [3]: Recompilation of a method (note: only entry is changed. The klassOop must stay the same)
66 // [4]: Inline cache miss. We go directly to megamorphic call.
67 //
68 // The class automatically inserts transition stubs (using the InlineCacheBuffer) when an MT-unsafe
69 // transition is made to a stub.
70 //
71 class CompiledIC;
73 class CompiledICInfo {
74 friend class CompiledIC;
75 private:
76 address _entry; // entry point for call
77 Handle _cached_oop; // Value of cached_oop (either in stub or inline cache)
78 bool _is_optimized; // it is an optimized virtual call (i.e., can be statically bound)
79 bool _to_interpreter; // Call it to interpreter
80 public:
81 address entry() const { return _entry; }
82 Handle cached_oop() const { return _cached_oop; }
83 bool is_optimized() const { return _is_optimized; }
84 };
86 class CompiledIC: public ResourceObj {
87 friend class InlineCacheBuffer;
88 friend class ICStub;
91 private:
92 NativeCall* _ic_call; // the call instruction
93 oop* _oop_addr; // patchable oop cell for this IC
94 RelocIterator _oops; // iteration over any and all set-oop instructions
95 bool _is_optimized; // an optimized virtual call (i.e., no compiled IC)
97 CompiledIC(NativeCall* ic_call);
98 CompiledIC(Relocation* ic_reloc); // Must be of virtual_call_type/opt_virtual_call_type
100 // low-level inline-cache manipulation. Cannot be accessed directly, since it might not be MT-safe
101 // to change an inline-cache. These changes the underlying inline-cache directly. They *newer* make
102 // changes to a transition stub.
103 void set_ic_destination(address entry_point);
104 void set_cached_oop(oop cache);
106 // Reads the location of the transition stub. This will fail with an assertion, if no transition stub is
107 // associated with the inline cache.
108 address stub_address() const;
109 bool is_in_transition_state() const; // Use InlineCacheBuffer
111 public:
112 // conversion (machine PC to CompiledIC*)
113 friend CompiledIC* CompiledIC_before(address return_addr);
114 friend CompiledIC* CompiledIC_at(address call_site);
115 friend CompiledIC* CompiledIC_at(Relocation* call_site);
117 // Return the cached_oop/destination associated with this inline cache. If the cache currently points
118 // to a transition stub, it will read the values from the transition stub.
119 oop cached_oop() const;
120 address ic_destination() const;
122 bool is_optimized() const { return _is_optimized; }
124 // State
125 bool is_clean() const;
126 bool is_megamorphic() const;
127 bool is_call_to_compiled() const;
128 bool is_call_to_interpreted() const;
130 address end_of_call() { return _ic_call->return_address(); }
132 // MT-safe patching of inline caches. Note: Only safe to call is_xxx when holding the CompiledIC_ock
133 // so you are guaranteed that no patching takes place. The same goes for verify.
134 //
135 // Note: We do not provide any direct access to the stub code, to prevent parts of the code
136 // to manipulate the inline cache in MT-unsafe ways.
137 //
138 // They all takes a TRAP argument, since they can cause a GC if the inline-cache buffer is full.
139 //
140 void set_to_clean(); // Can only be called during a safepoint operation
141 void set_to_monomorphic(const CompiledICInfo& info);
142 void set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS);
144 static void compute_monomorphic_entry(methodHandle method, KlassHandle receiver_klass,
145 bool is_optimized, bool static_bound, CompiledICInfo& info, TRAPS);
147 // Location
148 address instruction_address() const { return _ic_call->instruction_address(); }
150 // Misc
151 void print() PRODUCT_RETURN;
152 void print_compiled_ic() PRODUCT_RETURN;
153 void verify() PRODUCT_RETURN;
154 };
156 inline CompiledIC* CompiledIC_before(address return_addr) {
157 CompiledIC* c_ic = new CompiledIC(nativeCall_before(return_addr));
158 c_ic->verify();
159 return c_ic;
160 }
162 inline CompiledIC* CompiledIC_at(address call_site) {
163 CompiledIC* c_ic = new CompiledIC(nativeCall_at(call_site));
164 c_ic->verify();
165 return c_ic;
166 }
168 inline CompiledIC* CompiledIC_at(Relocation* call_site) {
169 CompiledIC* c_ic = new CompiledIC(call_site);
170 c_ic->verify();
171 return c_ic;
172 }
175 //-----------------------------------------------------------------------------
176 // The CompiledStaticCall represents a call to a static method in the compiled
177 //
178 // Transition diagram of a static call site is somewhat simpler than for an inlined cache:
179 //
180 //
181 // -----<----- Clean ----->-----
182 // / \
183 // / \
184 // compilled code <------------> interpreted code
185 //
186 // Clean: Calls directly to runtime method for fixup
187 // Compiled code: Calls directly to compiled code
188 // Interpreted code: Calls to stub that set methodOop reference
189 //
190 //
191 class CompiledStaticCall;
193 class StaticCallInfo {
194 private:
195 address _entry; // Entrypoint
196 methodHandle _callee; // Callee (used when calling interpreter)
197 bool _to_interpreter; // call to interpreted method (otherwise compiled)
199 friend class CompiledStaticCall;
200 public:
201 address entry() const { return _entry; }
202 methodHandle callee() const { return _callee; }
203 };
206 class CompiledStaticCall: public NativeCall {
207 friend class CompiledIC;
209 // Also used by CompiledIC
210 void set_to_interpreted(methodHandle callee, address entry);
211 bool is_optimized_virtual();
213 public:
214 friend CompiledStaticCall* compiledStaticCall_before(address return_addr);
215 friend CompiledStaticCall* compiledStaticCall_at(address native_call);
216 friend CompiledStaticCall* compiledStaticCall_at(Relocation* call_site);
218 // State
219 bool is_clean() const;
220 bool is_call_to_compiled() const;
221 bool is_call_to_interpreted() const;
223 // Clean static call (will force resolving on next use)
224 void set_to_clean();
226 // Set state. The entry must be the same, as computed by compute_entry.
227 // Computation and setting is split up, since the actions are separate during
228 // a OptoRuntime::resolve_xxx.
229 void set(const StaticCallInfo& info);
231 // Compute entry point given a method
232 static void compute_entry(methodHandle m, StaticCallInfo& info);
234 // Stub support
235 address find_stub();
236 static void set_stub_to_clean(static_stub_Relocation* static_stub);
238 // Misc.
239 void print() PRODUCT_RETURN;
240 void verify() PRODUCT_RETURN;
241 };
244 inline CompiledStaticCall* compiledStaticCall_before(address return_addr) {
245 CompiledStaticCall* st = (CompiledStaticCall*)nativeCall_before(return_addr);
246 st->verify();
247 return st;
248 }
250 inline CompiledStaticCall* compiledStaticCall_at(address native_call) {
251 CompiledStaticCall* st = (CompiledStaticCall*)native_call;
252 st->verify();
253 return st;
254 }
256 inline CompiledStaticCall* compiledStaticCall_at(Relocation* call_site) {
257 return compiledStaticCall_at(call_site->addr());
258 }
260 #endif // SHARE_VM_CODE_COMPILEDIC_HPP