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8066821: Enhance command line processing to manage deprecating and obsoleting -XX command line arguments

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Add support for alias options and automatically expiring deprecated options

Reviewed-by: dholmes, kbarrett, acorn
This commit is contained in:
Derek White 2015-09-11 15:31:03 -04:00 • committed by Derek White
parent 26254f4645
commit 23813ce92e
13 changed files with 736 additions and 384 deletions
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26
hotspot/src/share/vm/runtime/arguments.hpp
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@ -364,6 +364,8 @@ class Arguments : AllStatic {
// Aggressive optimization flags.
static jint set_aggressive_opts_flags();
static jint set_aggressive_heap_flags();
// Argument parsing
static void do_pd_flag_adjustments();
static bool parse_argument(const char* arg, Flag::Flags origin);
@ -427,11 +429,24 @@ class Arguments : AllStatic {
short* methodsNum, short* methodsMax, char*** methods, bool** allClasses
);
// Returns true if the string s is in the list of flags that have recently
// been made obsolete. If we detect one of these flags on the command
// line, instead of failing we print a warning message and ignore the
// flag. This gives the user a release or so to stop using the flag.
static bool is_newly_obsolete(const char* s, JDK_Version* buffer);
// Returns true if the flag is obsolete (and not yet expired).
// In this case the 'version' buffer is filled in with
// the version number when the flag became obsolete.
static bool is_obsolete_flag(const char* flag_name, JDK_Version* version);
// Returns 1 if the flag is deprecated (and not yet obsolete or expired).
// In this case the 'version' buffer is filled in with the version number when
// the flag became deprecated.
// Returns -1 if the flag is expired or obsolete.
// Returns 0 otherwise.
static int is_deprecated_flag(const char* flag_name, JDK_Version* version);
// Return the real name for the flag passed on the command line (either an alias name or "flag_name").
static const char* real_flag_name(const char *flag_name);
// Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated.
// Return NULL if the arg has expired.
static const char* handle_aliases_and_deprecation(const char* arg, bool warn);
static short CompileOnlyClassesNum;
static short CompileOnlyClassesMax;
@ -478,7 +493,6 @@ class Arguments : AllStatic {
// Check for consistency in the selection of the garbage collector.
static bool check_gc_consistency(); // Check user-selected gc
static void check_deprecated_gc_flags();
// Check consistency or otherwise of VM argument settings
static bool check_vm_args_consistency();
// Used by os_solaris