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 */
24
25 #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
27
28 #include "ci/compilerInterface.hpp"
29
30 class AbstractCompiler : public CHeapObj<mtCompiler> {
31 private:
32 volatile int _num_compiler_threads;
33
34 protected:
35 volatile int _compiler_state;
36 // Used for tracking global state of compiler runtime initialization
37 enum { uninitialized, initializing, initialized, failed, shut_down };
38
39 // This method returns true for the first compiler thread that reaches that methods.
40 // This thread will initialize the compiler runtime.
41 bool should_perform_init();
42
43 // The (closed set) of concrete compiler classes.
44 enum Type {
45 none,
46 c1,
47 c2,
48 shark
78 // be used to prohibit the compilers to use an intrinsic. There are three ways to
79 // disable an intrinsic using the DisableIntrinsic flag:
80 //
81 // (1) -XX:DisableIntrinsic=_hashCode,_getClass
82 // Disables intrinsification of _hashCode and _getClass globally
83 // (i.e., the intrinsified version the methods will not be used at all).
84 // (2) -XX:CompileCommand=option,aClass::aMethod,ccstr,DisableIntrinsic,_hashCode
85 // Disables intrinsification of _hashCode if it is called from
86 // aClass::aMethod (but not for any other call site of _hashCode)
87 // (3) -XX:CompileCommand=option,java.lang.ref.Reference::get,ccstr,DisableIntrinsic,_Reference_get
88 // Some methods are not compiled by C2. Instead, the C2 compiler
89 // returns directly the intrinsified version of these methods.
90 // The command above forces C2 to compile _Reference_get, but
91 // allows using the intrinsified version of _Reference_get at all
92 // other call sites.
93 //
94 // From the modes above, (1) disable intrinsics globally, (2) and (3)
95 // disable intrinsics on a per-method basis. In cases (2) and (3) the
96 // compilation context is aClass::aMethod and java.lang.ref.Reference::get,
97 // respectively.
98 virtual bool is_intrinsic_available(methodHandle method, methodHandle compilation_context) {
99 return is_intrinsic_supported(method) &&
100 !vmIntrinsics::is_disabled_by_flags(method, compilation_context);
101 }
102
103 // Determines if an intrinsic is supported by the compiler, that is,
104 // the compiler provides the instructions necessary to generate
105 // the intrinsic code for method 'method'.
106 //
107 // The 'is_intrinsic_supported' method is a white list, that is,
108 // by default no intrinsics are supported by a compiler except
109 // the ones listed in the method. Overriding methods should conform
110 // to this behavior.
111 virtual bool is_intrinsic_supported(methodHandle method) {
112 return false;
113 }
114
115 // Compiler type queries.
116 bool is_c1() { return _type == c1; }
117 bool is_c2() { return _type == c2; }
118 bool is_shark() { return _type == shark; }
119
120 // Customization
121 virtual void initialize () = 0;
122
123 void set_num_compiler_threads(int num) { _num_compiler_threads = num; }
124 int num_compiler_threads() { return _num_compiler_threads; }
125
126 // Get/set state of compiler objects
127 bool is_initialized() { return _compiler_state == initialized; }
128 bool is_failed () { return _compiler_state == failed;}
129 void set_state (int state);
130 void set_shut_down () { set_state(shut_down); }
131 // Compilation entry point for methods
132 virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
133 ShouldNotReachHere();
134 }
135
136
137 // Print compilation timers and statistics
138 virtual void print_timers() {
139 ShouldNotReachHere();
140 }
141 };
142
143 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
|
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 */
24
25 #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
27
28 #include "ci/compilerInterface.hpp"
29 #include "compiler/compilerDirectives.hpp"
30
31 class AbstractCompiler : public CHeapObj<mtCompiler> {
32 private:
33 volatile int _num_compiler_threads;
34
35 protected:
36 volatile int _compiler_state;
37 // Used for tracking global state of compiler runtime initialization
38 enum { uninitialized, initializing, initialized, failed, shut_down };
39
40 // This method returns true for the first compiler thread that reaches that methods.
41 // This thread will initialize the compiler runtime.
42 bool should_perform_init();
43
44 // The (closed set) of concrete compiler classes.
45 enum Type {
46 none,
47 c1,
48 c2,
49 shark
79 // be used to prohibit the compilers to use an intrinsic. There are three ways to
80 // disable an intrinsic using the DisableIntrinsic flag:
81 //
82 // (1) -XX:DisableIntrinsic=_hashCode,_getClass
83 // Disables intrinsification of _hashCode and _getClass globally
84 // (i.e., the intrinsified version the methods will not be used at all).
85 // (2) -XX:CompileCommand=option,aClass::aMethod,ccstr,DisableIntrinsic,_hashCode
86 // Disables intrinsification of _hashCode if it is called from
87 // aClass::aMethod (but not for any other call site of _hashCode)
88 // (3) -XX:CompileCommand=option,java.lang.ref.Reference::get,ccstr,DisableIntrinsic,_Reference_get
89 // Some methods are not compiled by C2. Instead, the C2 compiler
90 // returns directly the intrinsified version of these methods.
91 // The command above forces C2 to compile _Reference_get, but
92 // allows using the intrinsified version of _Reference_get at all
93 // other call sites.
94 //
95 // From the modes above, (1) disable intrinsics globally, (2) and (3)
96 // disable intrinsics on a per-method basis. In cases (2) and (3) the
97 // compilation context is aClass::aMethod and java.lang.ref.Reference::get,
98 // respectively.
99 virtual bool is_intrinsic_available(methodHandle method, DirectiveSet* dirset) {
100 return is_intrinsic_supported(method) &&
101 dirset->is_intrinsic_disabled(method) &&
102 !vmIntrinsics::is_disabled_by_flags(method);
103 }
104
105 // Determines if an intrinsic is supported by the compiler, that is,
106 // the compiler provides the instructions necessary to generate
107 // the intrinsic code for method 'method'.
108 //
109 // The 'is_intrinsic_supported' method is a white list, that is,
110 // by default no intrinsics are supported by a compiler except
111 // the ones listed in the method. Overriding methods should conform
112 // to this behavior.
113 virtual bool is_intrinsic_supported(methodHandle method) {
114 return false;
115 }
116
117 // Compiler type queries.
118 bool is_c1() { return _type == c1; }
119 bool is_c2() { return _type == c2; }
120 bool is_shark() { return _type == shark; }
121
122 // Customization
123 virtual void initialize () = 0;
124
125 void set_num_compiler_threads(int num) { _num_compiler_threads = num; }
126 int num_compiler_threads() { return _num_compiler_threads; }
127
128 // Get/set state of compiler objects
129 bool is_initialized() { return _compiler_state == initialized; }
130 bool is_failed () { return _compiler_state == failed;}
131 void set_state (int state);
132 void set_shut_down () { set_state(shut_down); }
133 // Compilation entry point for methods
134 virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* dirset) {
135 ShouldNotReachHere();
136 }
137
138
139 // Print compilation timers and statistics
140 virtual void print_timers() {
141 ShouldNotReachHere();
142 }
143 };
144
145 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
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