1 /*
2 * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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23 */
24
25 #ifndef SHARE_JVMCI_JVMCI_GLOBALS_HPP
26 #define SHARE_JVMCI_JVMCI_GLOBALS_HPP
27
28 #include "utilities/ostream.hpp"
29
30 //
31 // Defines all global flags used by the JVMCI compiler. Only flags that need
32 // to be accessible to the JVMCI C++ code should be defined here.
33 //
34 #define JVMCI_FLAGS(develop, \
35 develop_pd, \
36 product, \
37 product_pd, \
38 diagnostic, \
39 diagnostic_pd, \
40 experimental, \
41 notproduct, \
42 range, \
43 constraint, \
44 writeable) \
45 \
46 experimental(bool, EnableJVMCI, false, \
47 "Enable JVMCI") \
48 \
49 experimental(bool, UseJVMCICompiler, false, \
50 "Use JVMCI as the default compiler") \
51 \
52 experimental(bool, JVMCIPrintProperties, false, \
53 "Prints properties used by the JVMCI compiler and exits") \
54 \
55 experimental(bool, BootstrapJVMCI, false, \
56 "Bootstrap JVMCI before running Java main method") \
57 \
58 experimental(bool, EagerJVMCI, false, \
59 "Force eager JVMCI initialization") \
60 \
61 experimental(bool, PrintBootstrap, true, \
62 "Print JVMCI bootstrap progress and summary") \
63 \
64 experimental(intx, JVMCIThreads, 1, \
65 "Force number of JVMCI compiler threads to use. Ignored if " \
66 "UseJVMCICompiler is false.") \
67 range(1, max_jint) \
68 \
69 experimental(intx, JVMCIHostThreads, 1, \
70 "Force number of C1 compiler threads. Ignored if " \
71 "UseJVMCICompiler is false.") \
72 range(1, max_jint) \
73 \
74 NOT_COMPILER2(product(intx, MaxVectorSize, 64, \
75 "Max vector size in bytes, " \
76 "actual size could be less depending on elements type")) \
77 \
78 NOT_COMPILER2(product(bool, ReduceInitialCardMarks, true, \
79 "Defer write barriers of young objects")) \
80 \
81 experimental(intx, JVMCITraceLevel, 0, \
82 "Trace level for JVMCI: " \
83 "1 means emit a message for each CompilerToVM call," \
84 "levels greater than 1 provide progressively greater detail") \
85 \
86 experimental(intx, JVMCICounterSize, 0, \
87 "Reserved size for benchmark counters") \
88 range(0, max_jint) \
89 \
90 experimental(bool, JVMCICountersExcludeCompiler, true, \
91 "Exclude JVMCI compiler threads from benchmark counters") \
92 \
93 develop(bool, JVMCIUseFastLocking, true, \
94 "Use fast inlined locking code") \
95 \
96 experimental(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, \
97 "Maximum size of a compiled method.") \
98 \
99 experimental(intx, MethodProfileWidth, 0, \
100 "Number of methods to record in call profile") \
101 \
102 experimental(ccstr, JVMCILibPath, NULL, \
103 "LD path for loading the JVMCI shared library") \
104 \
105 experimental(ccstr, JVMCILibDumpJNIConfig, NULL, \
106 "Dumps to the given file a description of the classes, fields " \
107 "and methods the JVMCI shared library must provide") \
108 \
109 experimental(bool, UseJVMCINativeLibrary, false, \
110 "Execute JVMCI Java code from a shared library " \
111 "instead of loading it from class files and executing it " \
112 "on the HotSpot heap") \
113 \
114 NOT_COMPILER2(diagnostic(bool, UseMultiplyToLenIntrinsic, false, \
115 "Enables intrinsification of BigInteger.multiplyToLen()")) \
116 \
117 NOT_COMPILER2(diagnostic(bool, UseSquareToLenIntrinsic, false, \
118 "Enables intrinsification of BigInteger.squareToLen()")) \
119 \
120 NOT_COMPILER2(diagnostic(bool, UseMulAddIntrinsic, false, \
121 "Enables intrinsification of BigInteger.mulAdd()")) \
122 \
123 NOT_COMPILER2(diagnostic(bool, UseMontgomeryMultiplyIntrinsic, false, \
124 "Enables intrinsification of BigInteger.montgomeryMultiply()")) \
125 \
126 NOT_COMPILER2(diagnostic(bool, UseMontgomerySquareIntrinsic, false, \
127 "Enables intrinsification of BigInteger.montgomerySquare()"))
128
129
130 // Read default values for JVMCI globals
131
132 JVMCI_FLAGS(DECLARE_DEVELOPER_FLAG, \
133 DECLARE_PD_DEVELOPER_FLAG, \
134 DECLARE_PRODUCT_FLAG, \
135 DECLARE_PD_PRODUCT_FLAG, \
136 DECLARE_DIAGNOSTIC_FLAG, \
137 DECLARE_PD_DIAGNOSTIC_FLAG, \
138 DECLARE_EXPERIMENTAL_FLAG, \
139 DECLARE_NOTPRODUCT_FLAG, \
140 IGNORE_RANGE, \
141 IGNORE_CONSTRAINT, \
142 IGNORE_WRITEABLE)
143
144 // The base name for the shared library containing the JVMCI based compiler
145 #define JVMCI_SHARED_LIBRARY_NAME "jvmcicompiler"
146
147 class JVMCIGlobals {
148 private:
149 static fileStream* _jni_config_file;
150 public:
151
152 // Returns true if jvmci flags are consistent. If not consistent,
153 // an error message describing the inconsistency is printed before
154 // returning false.
155 static bool check_jvmci_flags_are_consistent();
156
157 // Check and exit VM with error if selected GC is not supported by JVMCI.
158 static void check_jvmci_supported_gc();
159
160 static fileStream* get_jni_config_file() { return _jni_config_file; }
161 };
162 #endif // SHARE_JVMCI_JVMCI_GLOBALS_HPP