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.
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 */
24
25#include "precompiled.hpp"
26#include "jvm.h"
27#include "jvmci/jvmci_globals.hpp"
28#include "gc/shared/gcConfig.hpp"
29#include "utilities/defaultStream.hpp"
30#include "utilities/ostream.hpp"
31#include "runtime/globals_extension.hpp"
32
33fileStream* JVMCIGlobals::_jni_config_file = NULL;
34
35// Return true if jvmci flags are consistent.
36bool JVMCIGlobals::check_jvmci_flags_are_consistent() {
37
38#ifndef PRODUCT
39#define APPLY_JVMCI_FLAGS(params3, params4) \
40 JVMCI_FLAGS(params4, params3, params4, params3, params4, params3, params4, params4, IGNORE_RANGE, IGNORE_CONSTRAINT, IGNORE_WRITEABLE)
41#define JVMCI_DECLARE_CHECK4(type, name, value, doc) bool name##checked = false;
42#define JVMCI_DECLARE_CHECK3(type, name, doc) bool name##checked = false;
43#define JVMCI_FLAG_CHECKED(name) name##checked = true;
44 APPLY_JVMCI_FLAGS(JVMCI_DECLARE_CHECK3, JVMCI_DECLARE_CHECK4)
45#else
46#define JVMCI_FLAG_CHECKED(name)
47#endif
48
49 // Checks that a given flag is not set if a given guard flag is false.
50#define CHECK_NOT_SET(FLAG, GUARD) \
51 JVMCI_FLAG_CHECKED(FLAG) \
52 if (!GUARD && !FLAG_IS_DEFAULT(FLAG)) { \
53 jio_fprintf(defaultStream::error_stream(), \
54 "Improperly specified VM option '%s': '%s' must be enabled\n", #FLAG, #GUARD); \
55 return false; \
56 }
57
58 JVMCI_FLAG_CHECKED(UseJVMCICompiler)
59 JVMCI_FLAG_CHECKED(EnableJVMCI)
60
61 CHECK_NOT_SET(BootstrapJVMCI, UseJVMCICompiler)
62 CHECK_NOT_SET(PrintBootstrap, UseJVMCICompiler)
63 CHECK_NOT_SET(JVMCIThreads, UseJVMCICompiler)
64 CHECK_NOT_SET(JVMCIHostThreads, UseJVMCICompiler)
65
66 if (UseJVMCICompiler) {
67 if (!FLAG_IS_DEFAULT(EnableJVMCI) && !EnableJVMCI) {
68 jio_fprintf(defaultStream::error_stream(),
69 "Improperly specified VM option UseJVMCICompiler: EnableJVMCI cannot be disabled\n");
70 return false;
71 }
72 FLAG_SET_DEFAULT(EnableJVMCI, true);
73 if (BootstrapJVMCI && UseJVMCINativeLibrary) {
74 jio_fprintf(defaultStream::error_stream(), "-XX:+BootstrapJVMCI is not compatible with -XX:+UseJVMCINativeLibrary\n");
75 return false;
76 }
77 }
78
79 if (!EnableJVMCI) {
80 // Switch off eager JVMCI initialization if JVMCI is disabled.
81 // Don't throw error if EagerJVMCI is set to allow testing.
82 if (EagerJVMCI) {
83 FLAG_SET_DEFAULT(EagerJVMCI, false);
84 }
85 }
86 JVMCI_FLAG_CHECKED(EagerJVMCI)
87
88 CHECK_NOT_SET(JVMCITraceLevel, EnableJVMCI)
89 CHECK_NOT_SET(JVMCICounterSize, EnableJVMCI)
90 CHECK_NOT_SET(JVMCICountersExcludeCompiler, EnableJVMCI)
91 CHECK_NOT_SET(JVMCIUseFastLocking, EnableJVMCI)
92 CHECK_NOT_SET(JVMCINMethodSizeLimit, EnableJVMCI)
93 CHECK_NOT_SET(MethodProfileWidth, EnableJVMCI)
94 CHECK_NOT_SET(JVMCIPrintProperties, EnableJVMCI)
95 CHECK_NOT_SET(UseJVMCINativeLibrary, EnableJVMCI)
96 CHECK_NOT_SET(JVMCILibPath, EnableJVMCI)
97 CHECK_NOT_SET(JVMCILibDumpJNIConfig, EnableJVMCI)
98
99#ifndef PRODUCT
100#define JVMCI_CHECK4(type, name, value, doc) assert(name##checked, #name " flag not checked");
101#define JVMCI_CHECK3(type, name, doc) assert(name##checked, #name " flag not checked");
102 // Ensures that all JVMCI flags are checked by this method.
103 APPLY_JVMCI_FLAGS(JVMCI_CHECK3, JVMCI_CHECK4)
104#undef APPLY_JVMCI_FLAGS
105#undef JVMCI_DECLARE_CHECK3
106#undef JVMCI_DECLARE_CHECK4
107#undef JVMCI_CHECK3
108#undef JVMCI_CHECK4
109#undef JVMCI_FLAG_CHECKED
110#endif // PRODUCT
111#undef CHECK_NOT_SET
112
113 if (JVMCILibDumpJNIConfig != NULL) {
114 _jni_config_file = new(ResourceObj::C_HEAP, mtJVMCI) fileStream(JVMCILibDumpJNIConfig);
115 if (_jni_config_file == NULL || !_jni_config_file->is_open()) {
116 jio_fprintf(defaultStream::error_stream(),
117 "Could not open file for dumping JVMCI shared library JNI config: %s\n", JVMCILibDumpJNIConfig);
118 return false;
119 }
120 }
121
122 return true;
123}
124
125void JVMCIGlobals::check_jvmci_supported_gc() {
126 if (EnableJVMCI) {
127 // Check if selected GC is supported by JVMCI and Java compiler
128 if (!(UseSerialGC || UseParallelGC || UseParallelOldGC || UseG1GC)) {
129 vm_exit_during_initialization("JVMCI Compiler does not support selected GC", GCConfig::hs_err_name());
130 FLAG_SET_DEFAULT(EnableJVMCI, false);
131 FLAG_SET_DEFAULT(UseJVMCICompiler, false);
132 }
133 }
134}
135