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annotate src/share/vm/runtime/javaCalls.hpp @ 3763:e66f38dd58a9
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date | Wed, 08 Jun 2011 08:39:53 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_JAVACALLS_HPP |
26 #define SHARE_VM_RUNTIME_JAVACALLS_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 #include "oops/methodOop.hpp" | |
30 #include "runtime/handles.hpp" | |
31 #include "runtime/javaFrameAnchor.hpp" | |
32 #include "runtime/vmThread.hpp" | |
33 #ifdef TARGET_ARCH_x86 | |
34 # include "jniTypes_x86.hpp" | |
35 #endif | |
36 #ifdef TARGET_ARCH_sparc | |
37 # include "jniTypes_sparc.hpp" | |
38 #endif | |
39 #ifdef TARGET_ARCH_zero | |
40 # include "jniTypes_zero.hpp" | |
41 #endif | |
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42 #ifdef TARGET_ARCH_arm |
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43 # include "jniTypes_arm.hpp" |
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44 #endif |
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45 #ifdef TARGET_ARCH_ppc |
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46 # include "jniTypes_ppc.hpp" |
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47 #endif |
1972 | 48 #ifdef TARGET_OS_FAMILY_linux |
49 # include "thread_linux.inline.hpp" | |
50 #endif | |
51 #ifdef TARGET_OS_FAMILY_solaris | |
52 # include "thread_solaris.inline.hpp" | |
53 #endif | |
54 #ifdef TARGET_OS_FAMILY_windows | |
55 # include "thread_windows.inline.hpp" | |
56 #endif | |
57 | |
0 | 58 // A JavaCallWrapper is constructed before each JavaCall and destructed after the call. |
59 // Its purpose is to allocate/deallocate a new handle block and to save/restore the last | |
60 // Java fp/sp. A pointer to the JavaCallWrapper is stored on the stack. | |
61 | |
62 class JavaCallWrapper: StackObj { | |
63 friend class VMStructs; | |
64 private: | |
65 JavaThread* _thread; // the thread to which this call belongs | |
66 JNIHandleBlock* _handles; // the saved handle block | |
67 methodOop _callee_method; // to be able to collect arguments if entry frame is top frame | |
68 oop _receiver; // the receiver of the call (if a non-static call) | |
69 | |
70 JavaFrameAnchor _anchor; // last thread anchor state that we must restore | |
71 | |
72 JavaValue* _result; // result value | |
73 | |
74 public: | |
75 // Construction/destruction | |
76 JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS); | |
77 ~JavaCallWrapper(); | |
78 | |
79 // Accessors | |
80 JavaThread* thread() const { return _thread; } | |
81 JNIHandleBlock* handles() const { return _handles; } | |
82 | |
83 JavaFrameAnchor* anchor(void) { return &_anchor; } | |
84 | |
85 JavaValue* result() const { return _result; } | |
86 // GC support | |
87 methodOop callee_method() { return _callee_method; } | |
88 oop receiver() { return _receiver; } | |
89 void oops_do(OopClosure* f); | |
90 | |
91 }; | |
92 | |
93 | |
94 // Encapsulates arguments to a JavaCall (faster, safer, and more convenient than using var-args) | |
95 class JavaCallArguments : public StackObj { | |
96 private: | |
97 enum Constants { | |
98 _default_size = 8 // Must be at least # of arguments in JavaCalls methods | |
99 }; | |
100 | |
101 intptr_t _value_buffer [_default_size + 1]; | |
102 bool _is_oop_buffer[_default_size + 1]; | |
103 | |
104 intptr_t* _value; | |
105 bool* _is_oop; | |
106 int _size; | |
107 int _max_size; | |
108 bool _start_at_zero; // Support late setting of receiver | |
109 | |
110 void initialize() { | |
111 // Starts at first element to support set_receiver. | |
112 _value = &_value_buffer[1]; | |
113 _is_oop = &_is_oop_buffer[1]; | |
114 | |
115 _max_size = _default_size; | |
116 _size = 0; | |
117 _start_at_zero = false; | |
118 } | |
119 | |
120 public: | |
121 JavaCallArguments() { initialize(); } | |
122 | |
123 JavaCallArguments(Handle receiver) { | |
124 initialize(); | |
125 push_oop(receiver); | |
126 } | |
127 | |
128 JavaCallArguments(int max_size) { | |
129 if (max_size > _default_size) { | |
130 _value = NEW_RESOURCE_ARRAY(intptr_t, max_size + 1); | |
131 _is_oop = NEW_RESOURCE_ARRAY(bool, max_size + 1); | |
1506 | 132 |
0 | 133 // Reserve room for potential receiver in value and is_oop |
134 _value++; _is_oop++; | |
1506 | 135 |
0 | 136 _max_size = max_size; |
137 _size = 0; | |
138 _start_at_zero = false; | |
139 } else { | |
140 initialize(); | |
141 } | |
142 } | |
143 | |
144 inline void push_oop(Handle h) { _is_oop[_size] = true; | |
145 JNITypes::put_obj((oop)h.raw_value(), _value, _size); } | |
146 | |
147 inline void push_int(int i) { _is_oop[_size] = false; | |
148 JNITypes::put_int(i, _value, _size); } | |
149 | |
150 inline void push_double(double d) { _is_oop[_size] = false; _is_oop[_size + 1] = false; | |
151 JNITypes::put_double(d, _value, _size); } | |
152 | |
153 inline void push_long(jlong l) { _is_oop[_size] = false; _is_oop[_size + 1] = false; | |
154 JNITypes::put_long(l, _value, _size); } | |
155 | |
156 inline void push_float(float f) { _is_oop[_size] = false; | |
157 JNITypes::put_float(f, _value, _size); } | |
158 | |
159 // receiver | |
160 Handle receiver() { | |
161 assert(_size > 0, "must at least be one argument"); | |
162 assert(_is_oop[0], "first argument must be an oop"); | |
163 assert(_value[0] != 0, "receiver must be not-null"); | |
164 return Handle((oop*)_value[0], false); | |
165 } | |
166 | |
167 void set_receiver(Handle h) { | |
168 assert(_start_at_zero == false, "can only be called once"); | |
169 _start_at_zero = true; | |
170 _is_oop--; | |
171 _value--; | |
172 _size++; | |
173 _is_oop[0] = true; | |
174 _value[0] = (intptr_t)h.raw_value(); | |
175 } | |
176 | |
177 // Converts all Handles to oops, and returns a reference to parameter vector | |
178 intptr_t* parameters() ; | |
179 int size_of_parameters() const { return _size; } | |
180 | |
181 // Verify that pushed arguments fits a given method | |
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182 void verify(methodHandle method, BasicType return_type, Thread *thread); |
0 | 183 }; |
184 | |
185 // All calls to Java have to go via JavaCalls. Sets up the stack frame | |
186 // and makes sure that the last_Java_frame pointers are chained correctly. | |
187 // | |
188 | |
189 class JavaCalls: AllStatic { | |
190 static void call_helper(JavaValue* result, methodHandle* method, JavaCallArguments* args, TRAPS); | |
191 public: | |
192 // Optimized Constuctor call | |
193 static void call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS); | |
194 | |
195 // call_special | |
196 // ------------ | |
197 // The receiver must be first oop in argument list | |
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198 static void call_special(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS); |
0 | 199 |
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200 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); // No args |
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201 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS); |
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202 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS); |
0 | 203 |
204 // virtual call | |
205 // ------------ | |
206 | |
207 // The receiver must be first oop in argument list | |
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208 static void call_virtual(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS); |
0 | 209 |
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210 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, TRAPS); // No args |
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211 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS); |
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212 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS); |
0 | 213 |
214 // Static call | |
215 // ----------- | |
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216 static void call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS); |
0 | 217 |
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218 static void call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); |
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219 static void call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS); |
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220 static void call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS); |
0 | 221 |
222 // Low-level interface | |
223 static void call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS); | |
224 }; | |
1972 | 225 |
226 #endif // SHARE_VM_RUNTIME_JAVACALLS_HPP |