2052   }
2053   if (FLAG_IS_CMDLINE(DefaultMaxRAMFraction)) {
2054     warning("DefaultMaxRAMFraction is deprecated and will likely be removed in a future release. "
2055         "Use MaxRAMFraction instead.");
2056   }
2057   if (FLAG_IS_CMDLINE(UseCMSCompactAtFullCollection)) {
2058     warning("UseCMSCompactAtFullCollection is deprecated and will likely be removed in a future release.");
2059   }
2060   if (FLAG_IS_CMDLINE(CMSFullGCsBeforeCompaction)) {
2061     warning("CMSFullGCsBeforeCompaction is deprecated and will likely be removed in a future release.");
2062   }
2063   if (FLAG_IS_CMDLINE(UseCMSCollectionPassing)) {
2064     warning("UseCMSCollectionPassing is deprecated and will likely be removed in a future release.");
2065   }
2066 }
2067 
2068 // Check stack pages settings
2069 bool Arguments::check_stack_pages()
2070 {
2071   bool status = true;
2072   status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages");


2073   status = status && verify_min_value(StackRedPages, 1, "StackRedPages");
2074   // greater stack shadow pages can't generate instruction to bang stack
2075   status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages");
2076   return status;
2077 }
2078 
2079 // Check the consistency of vm_init_args
2080 bool Arguments::check_vm_args_consistency() {
2081   // Method for adding checks for flag consistency.
2082   // The intent is to warn the user of all possible conflicts,
2083   // before returning an error.
2084   // Note: Needs platform-dependent factoring.
2085   bool status = true;
2086 
2087   // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product
2088   // builds so the cost of stack banging can be measured.
2089 #if (defined(PRODUCT) && defined(SOLARIS))
2090   if (!UseBoundThreads && !UseStackBanging) {
2091     jio_fprintf(defaultStream::error_stream(),
2092                 "-UseStackBanging conflicts with -UseBoundThreads\n");

2052   }
2053   if (FLAG_IS_CMDLINE(DefaultMaxRAMFraction)) {
2054     warning("DefaultMaxRAMFraction is deprecated and will likely be removed in a future release. "
2055         "Use MaxRAMFraction instead.");
2056   }
2057   if (FLAG_IS_CMDLINE(UseCMSCompactAtFullCollection)) {
2058     warning("UseCMSCompactAtFullCollection is deprecated and will likely be removed in a future release.");
2059   }
2060   if (FLAG_IS_CMDLINE(CMSFullGCsBeforeCompaction)) {
2061     warning("CMSFullGCsBeforeCompaction is deprecated and will likely be removed in a future release.");
2062   }
2063   if (FLAG_IS_CMDLINE(UseCMSCollectionPassing)) {
2064     warning("UseCMSCollectionPassing is deprecated and will likely be removed in a future release.");
2065   }
2066 }
2067 
2068 // Check stack pages settings
2069 bool Arguments::check_stack_pages()
2070 {
2071   bool status = true;
2072   // banging in compiler code needs 2 yellow page: it bangs page at
2073   // StackShadowPages+1 which may be second yellow page.
2074   status = status && verify_min_value(StackYellowPages, 2, "StackYellowPages");
2075   status = status && verify_min_value(StackRedPages, 1, "StackRedPages");
2076   // greater stack shadow pages can't generate instruction to bang stack
2077   status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages");
2078   return status;
2079 }
2080 
2081 // Check the consistency of vm_init_args
2082 bool Arguments::check_vm_args_consistency() {
2083   // Method for adding checks for flag consistency.
2084   // The intent is to warn the user of all possible conflicts,
2085   // before returning an error.
2086   // Note: Needs platform-dependent factoring.
2087   bool status = true;
2088 
2089   // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product
2090   // builds so the cost of stack banging can be measured.
2091 #if (defined(PRODUCT) && defined(SOLARIS))
2092   if (!UseBoundThreads && !UseStackBanging) {
2093     jio_fprintf(defaultStream::error_stream(),
2094                 "-UseStackBanging conflicts with -UseBoundThreads\n");