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- Adds AllowEnhancedClassRedefinition argument.
- diff --git a/src/share/vm/runtime/arguments.cpp b/src/share/vm/runtime/arguments.cpp
- --- a/src/share/vm/runtime/arguments.cpp
- +++ b/src/share/vm/runtime/arguments.cpp
- @@ -59,8 +59,8 @@
- #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
- #endif // INCLUDE_ALL_GCS
-
- -// Note: This is a special bug reporting site for the JVM
- -#define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp"
- +// (DCEVM) The DCE VM has its own JIRA bug tracking system.
- +#define DEFAULT_VENDOR_URL_BUG "https://github.com/dcevm/dcevm/issues"
- #define DEFAULT_JAVA_LAUNCHER "generic"
-
- // Disable options not supported in this release, with a warning if they
- @@ -1507,6 +1507,10 @@
-
- void Arguments::set_ergonomics_flags() {
-
- + if (AllowEnhancedClassRedefinition) {
- + // (DCEVM) enforces serial GC
- + FLAG_SET_ERGO(bool, UseSerialGC, true);
- + }
- if (os::is_server_class_machine()) {
- // If no other collector is requested explicitly,
- // let the VM select the collector based on
- @@ -1948,6 +1952,17 @@
- if (UseConcMarkSweepGC || UseParNewGC) i++;
- if (UseParallelGC || UseParallelOldGC) i++;
- if (UseG1GC) i++;
- +
- + if (AllowEnhancedClassRedefinition) {
- + // (DCEVM) Must use serial GC. This limitation applies because the instance size changing GC modifications
- + // are only built into the mark and compact algorithm.
- + if (!UseSerialGC && i >= 1) {
- + jio_fprintf(defaultStream::error_stream(),
- + "Must use the serial GC in the DCEVM\n");
- + status = false;
- + }
- + }
- +
- if (i > 1) {
- jio_fprintf(defaultStream::error_stream(),
- "Conflicting collector combinations in option list; "
- diff --git a/src/share/vm/runtime/globals.hpp b/src/share/vm/runtime/globals.hpp
- --- a/src/share/vm/runtime/globals.hpp
- +++ b/src/share/vm/runtime/globals.hpp
- @@ -1273,6 +1273,9 @@
- product(intx, TraceRedefineClasses, 0, \
- "Trace level for JVMTI RedefineClasses") \
- \
- + product(bool, AllowEnhancedClassRedefinition, true, \
- + "Allow enhanced class redefinition beyond swapping method bodies")\
- + \
- develop(bool, StressMethodComparator, false, \
- "Run the MethodComparator on all loaded methods") \
- \
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