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/*
* Copyright (c) 2000, 2020, 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, \
notproduct, \
range, \
constraint) \
\
product(bool, EnableJVMCI, false, EXPERIMENTAL, \
"Enable JVMCI") \
\
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") \
\
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") \
\
develop(bool, JVMCIUseFastLocking, true, \
"Use fast inlined locking code") \
\
product(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, EXPERIMENTAL, \
"Maximum size of a compiled method.") \
range(0, max_jint) \
\
product(ccstr, JVMCILibPath, NULL, EXPERIMENTAL, \
"LD path for loading the JVMCI shared library") \
\
product(ccstr, JVMCILibDumpJNIConfig, NULL, 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 EnableJVMCIProduct is " \
"true and a JVMCI native library is available.") \
\
product(double, JVMCINativeLibraryThreadFraction, 0.33, EXPERIMENTAL, \
"The fraction of compiler threads used by libjvmci. " \
"The remaining compiler threads are used by C1.") \
range(0.0, 1.0) \
\
product(ccstr, JVMCINativeLibraryErrorFile, NULL, 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)") \
\
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()"))
// 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);
// 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
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