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8213767: Remove the -Xconcurrentio flag and associated code

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Reviewed-by: lfoltan, rehn
This commit is contained in:
David Holmes 2018-11-14 04:56:43 -05:00
parent 89b7212611
commit 458e0b864a
3 changed files with 2 additions and 23 deletions
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16
src/hotspot/share/runtime/arguments.cpp
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@ -2642,22 +2642,6 @@ jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* patch_m
// Obsolete in JDK 10
JDK_Version::jdk(10).to_string(version, sizeof(version));
warning("Ignoring option %s; support was removed in %s", option->optionString, version);
// -Xconcurrentio
} else if (match_option(option, "-Xconcurrentio")) {
if (FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true) != JVMFlag::SUCCESS) {
return JNI_EINVAL;
}
if (FLAG_SET_CMDLINE(bool, BackgroundCompilation, false) != JVMFlag::SUCCESS) {
return JNI_EINVAL;
}
SafepointSynchronize::set_defer_thr_suspend_loop_count();
if (FLAG_SET_CMDLINE(bool, UseTLAB, false) != JVMFlag::SUCCESS) {
return JNI_EINVAL;
}
if (FLAG_SET_CMDLINE(size_t, NewSizeThreadIncrease, 16 * K) != JVMFlag::SUCCESS) { // 20Kb per thread added to new generation
return JNI_EINVAL;
}
// -Xinternalversion
} else if (match_option(option, "-Xinternalversion")) {
jio_fprintf(defaultStream::output_stream(), "%s\n",

4
src/hotspot/share/runtime/safepoint.hpp
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@ -178,10 +178,6 @@ public:
static address safepoint_counter_addr() { return (address)&_safepoint_counter; }
// This method is only used for -Xconcurrentio support.
static void set_defer_thr_suspend_loop_count() {
_defer_thr_suspend_loop_count = 1;
}
};
// Some helper assert macros for safepoint checks.

3
test/hotspot/jtreg/runtime/CommandLine/TestNullTerminatedFlags.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014, 2018, 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
@ -42,7 +42,6 @@ public class TestNullTerminatedFlags {
"-green",
"-native",
"-Xrs",
"-Xconcurrentio",
"-Xinternalversion",
"-Xprintflags",
"-Xint",