/* * Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_JVMCI_JVMCI_GLOBALS_HPP #define SHARE_JVMCI_JVMCI_GLOBALS_HPP #include "runtime/globals_shared.hpp" #include "utilities/vmEnums.hpp" class fileStream; #define LIBJVMCI_ERR_FILE "hs_err_pid%p_libjvmci.log" #define DEFAULT_COMPILER_IDLE_DELAY 1000 // // Declare all global flags used by the JVMCI compiler. Only flags that need // to be accessible to the JVMCI C++ code should be defined here. // #define JVMCI_FLAGS(develop, \ develop_pd, \ product, \ product_pd, \ range, \ constraint) \ \ product(bool, EnableJVMCI, false, EXPERIMENTAL, \ "Enable JVMCI support in the VM. " \ "Defaults to true if UseJVMCICompiler is true or " \ "--add-modules=jdk.internal.vm.ci was specified. " \ "The behavior of --add-modules=jdk.internal.vm.ci is triggered " \ "if any of the following is true: " \ "1. -XX:+EnableJVMCI is set to true on the command line. " \ "2. -XX:+EnableJVMCI is set to true by jdk/internal/vm/options " \ " in the java.base module. " \ "3. EnableJVMCI is defaulted to true by UseJVMCICompiler and " \ " libjvmci is not enabled") \ \ product(bool, UseGraalJIT, false, EXPERIMENTAL, \ "Select the Graal JVMCI compiler. This is an alias for: " \ " -XX:+EnableJVMCIProduct " \ " -Djvmci.Compiler=graal ") \ \ product(bool, EnableJVMCIProduct, false, EXPERIMENTAL, \ "Allow JVMCI to be used in product mode. This alters a subset of "\ "JVMCI flags to be non-experimental, defaults UseJVMCICompiler " \ "and EnableJVMCI to true and defaults UseJVMCINativeLibrary " \ "to true if a JVMCI native library is available.") \ \ product(bool, UseJVMCICompiler, false, EXPERIMENTAL, \ "Use JVMCI as the default compiler. Defaults to true if " \ "EnableJVMCIProduct is true.") \ \ product(uint, JVMCIThreadsPerNativeLibraryRuntime, 1, EXPERIMENTAL, \ "Max number of threads per JVMCI native runtime. " \ "Specify 0 to force use of a single JVMCI native runtime. " \ "Specify 1 to force a single JVMCI native runtime per thread. ") \ range(0, max_jint) \ \ product(uint, JVMCICompilerIdleDelay, DEFAULT_COMPILER_IDLE_DELAY, EXPERIMENTAL, \ "Number of milliseconds a JVMCI compiler queue should wait for " \ "a compilation task before being considered idle. When a JVMCI " \ "compiler queue becomes idle, it is detached from its JVMCIRuntime. "\ "Once the last thread is detached from a JVMCIRuntime, all " \ "resources associated with the runtime are reclaimed. To use a " \ "new runtime for every JVMCI compilation, set this value to 0 " \ "and set JVMCIThreadsPerNativeLibraryRuntime to 1.") \ range(0, max_jint) \ \ product(bool, JVMCIPrintProperties, false, EXPERIMENTAL, \ "Prints properties used by the JVMCI compiler and exits") \ \ product(bool, BootstrapJVMCI, false, EXPERIMENTAL, \ "Bootstrap JVMCI before running Java main method. This " \ "initializes the compile queue with a small set of methods " \ "and processes the queue until it is empty. Combining this with " \ "-XX:-TieredCompilation makes JVMCI compile more of itself.") \ \ product(bool, EagerJVMCI, false, EXPERIMENTAL, \ "Force eager JVMCI initialization. Defaults to true if " \ "UseJVMCICompiler is true.") \ \ product(bool, PrintBootstrap, true, EXPERIMENTAL, \ "Print JVMCI bootstrap progress and summary") \ \ product(intx, JVMCIThreads, 1, EXPERIMENTAL, \ "Force number of JVMCI compiler threads to use. Ignored if " \ "UseJVMCICompiler is false.") \ range(1, max_jint) \ \ product(intx, JVMCIHostThreads, 1, EXPERIMENTAL, \ "Force number of C1 compiler threads. Ignored if " \ "UseJVMCICompiler is false.") \ range(1, max_jint) \ \ NOT_COMPILER2(product(intx, MaxVectorSize, 64, \ "Max vector size in bytes, " \ "actual size could be less depending on elements type") \ range(0, max_jint)) \ \ NOT_COMPILER2(product(bool, ReduceInitialCardMarks, true, \ "Defer write barriers of young objects")) \ \ product(intx, JVMCIEventLogLevel, 1, EXPERIMENTAL, \ "Event log level for JVMCI") \ range(0, 4) \ \ product(intx, JVMCITraceLevel, 0, EXPERIMENTAL, \ "Trace level for JVMCI") \ range(0, 4) \ \ product(intx, JVMCICounterSize, 0, EXPERIMENTAL, \ "Reserved size for benchmark counters") \ range(0, 1000000) \ \ product(bool, JVMCICountersExcludeCompiler, true, EXPERIMENTAL, \ "Exclude JVMCI compiler threads from benchmark counters") \ \ product(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, EXPERIMENTAL, \ "Maximum size of a compiled method.") \ range(0, max_jint) \ \ product(ccstr, JVMCILibPath, nullptr, EXPERIMENTAL, \ "LD path for loading the JVMCI shared library") \ \ product(ccstr, JVMCILibDumpJNIConfig, nullptr, EXPERIMENTAL, \ "Dumps to the given file a description of the classes, fields " \ "and methods the JVMCI shared library must provide") \ \ product(bool, UseJVMCINativeLibrary, false, EXPERIMENTAL, \ "Execute JVMCI Java code from a shared library (\"libjvmci\") " \ "instead of loading it from class files and executing it " \ "on the HotSpot heap. Defaults to true if UseJVMCICompiler or " \ "EnableJVMCI is true and a JVMCI native library is available.") \ \ product(double, JVMCINativeLibraryThreadFraction, 0.66, EXPERIMENTAL, \ "The fraction of compiler threads used by libjvmci. " \ "The remaining compiler threads are used by C1. " \ "Reducing this value could reduce the max RSS but " \ "also increase the warmup time.") \ range(0.0, 1.0) \ \ product(ccstr, JVMCINativeLibraryErrorFile, nullptr, EXPERIMENTAL, \ "If an error in the JVMCI native library occurs, save the " \ "error data to this file" \ "[default: ./" LIBJVMCI_ERR_FILE "] (%p replaced with pid)") \ \ product(bool, LibJVMCICompilerThreadHidden, true, EXPERIMENTAL, \ "If true then native JVMCI compiler threads are hidden from " \ "JVMTI and FlightRecorder. This must be set to false if you " \ "wish to use a Java debugger against JVMCI threads.") \ \ NOT_COMPILER2(product(bool, UseMultiplyToLenIntrinsic, false, DIAGNOSTIC, \ "Enables intrinsification of BigInteger.multiplyToLen()")) \ \ NOT_COMPILER2(product(bool, UseSquareToLenIntrinsic, false, DIAGNOSTIC, \ "Enables intrinsification of BigInteger.squareToLen()")) \ \ NOT_COMPILER2(product(bool, UseMulAddIntrinsic, false, DIAGNOSTIC, \ "Enables intrinsification of BigInteger.mulAdd()")) \ \ NOT_COMPILER2(product(bool, UseMontgomeryMultiplyIntrinsic, false, DIAGNOSTIC, \ "Enables intrinsification of BigInteger.montgomeryMultiply()")) \ \ NOT_COMPILER2(product(bool, UseMontgomerySquareIntrinsic, false, DIAGNOSTIC, \ "Enables intrinsification of BigInteger.montgomerySquare()")) \ \ NOT_COMPILER2(product(bool, EnableVectorSupport, false, EXPERIMENTAL, \ "Enables VectorSupport intrinsics")) \ \ NOT_COMPILER2(product(bool, EnableVectorReboxing, false, EXPERIMENTAL, \ "Enables reboxing of vectors")) \ \ NOT_COMPILER2(product(bool, EnableVectorAggressiveReboxing, false, EXPERIMENTAL, \ "Enables aggressive reboxing of vectors")) \ \ product(bool, UseVectorStubs, false, EXPERIMENTAL, \ "Use stubs for vector transcendental operations") \ // end of JVMCI_FLAGS DECLARE_FLAGS(JVMCI_FLAGS) // The base name for the shared library containing the JVMCI based compiler #define JVMCI_SHARED_LIBRARY_NAME "jvmcicompiler" class JVMCIGlobals { private: static fileStream* _jni_config_file; public: // Returns true if jvmci flags are consistent. If not consistent, // an error message describing the inconsistency is printed before // returning false. static bool check_jvmci_flags_are_consistent(); // Convert JVMCI experimental flags to product static bool enable_jvmci_product_mode(JVMFlagOrigin origin, bool use_graal_jit); // Returns true iff the GC fully supports JVMCI. static bool gc_supports_jvmci(); // Check and turn off EnableJVMCI if selected GC does not support JVMCI. static void check_jvmci_supported_gc(); static fileStream* get_jni_config_file() { return _jni_config_file; } }; #endif // SHARE_JVMCI_JVMCI_GLOBALS_HPP