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6788376: allow to ignore unrecognized VM options

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Add new product flag -XX:+IgnoreUnrecognizedVMOptions

Reviewed-by: ysr, xlu
This commit is contained in:
Vladimir Kozlov 2009-02-05 13:38:52 -08:00
parent 67f20d82c9
commit 72b75d1adf
3 changed files with 25 additions and 5 deletions
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25
hotspot/src/share/vm/runtime/arguments.cpp
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@ -2478,7 +2478,7 @@ jint Arguments::parse_options_environment_variable(const char* name, SysClassPat
vm_args.version = JNI_VERSION_1_2;
vm_args.options = options;
vm_args.nOptions = i;
vm_args.ignoreUnrecognized = false;
vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions;
if (PrintVMOptions) {
const char* tail;
@ -2525,13 +2525,12 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
// If flag "-XX:Flags=flags-file" is used it will be the first option to be processed.
bool settings_file_specified = false;
const char* flags_file;
int index;
for (index = 0; index < args->nOptions; index++) {
const JavaVMOption *option = args->options + index;
if (match_option(option, "-XX:Flags=", &tail)) {
if (!process_settings_file(tail, true, args->ignoreUnrecognized)) {
return JNI_EINVAL;
}
flags_file = tail;
settings_file_specified = true;
}
if (match_option(option, "-XX:+PrintVMOptions", &tail)) {
@ -2540,6 +2539,24 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
if (match_option(option, "-XX:-PrintVMOptions", &tail)) {
PrintVMOptions = false;
}
if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) {
IgnoreUnrecognizedVMOptions = true;
}
if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) {
IgnoreUnrecognizedVMOptions = false;
}
}
if (IgnoreUnrecognizedVMOptions) {
// uncast const to modify the flag args->ignoreUnrecognized
*(jboolean*)(&args->ignoreUnrecognized) = true;
}
// Parse specified settings file
if (settings_file_specified) {
if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) {
return JNI_EINVAL;
}
}
// Parse default .hotspotrc settings file