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8028391: Make the Min/MaxHeapFreeRatio flags manageable

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Made the flags Min- and MaxHeapFreeRatio manageable, and implemented support for these flags in ParallalGC.

Reviewed-by: sla, mgerdin, brutisso
This commit is contained in:
Jesper Wilhelmsson 2014-01-29 23:17:05 +01:00
parent 9d4f3dfd4f
commit 5301534dc3
11 changed files with 178 additions and 36 deletions
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19
hotspot/src/share/vm/runtime/arguments.hpp
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@ -27,6 +27,7 @@
#include "runtime/java.hpp"
#include "runtime/perfData.hpp"
#include "utilities/debug.hpp"
#include "utilities/top.hpp"
// Arguments parses the command line and recognizes options
@ -370,11 +371,16 @@ class Arguments : AllStatic {
static jint parse_vm_init_args(const JavaVMInitArgs* args);
static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, SysClassPath* scp_p, bool* scp_assembly_required_p, Flag::Flags origin);
static jint finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required);
static bool is_bad_option(const JavaVMOption* option, jboolean ignore,
const char* option_type);
static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type);
static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
return is_bad_option(option, ignore, NULL);
}
static bool is_percentage(uintx val) {
return val <= 100;
}
static bool verify_interval(uintx val, uintx min,
uintx max, const char* name);
static bool verify_min_value(intx val, intx min, const char* name);
@ -440,6 +446,15 @@ class Arguments : AllStatic {
static jint apply_ergo();
// Adjusts the arguments after the OS have adjusted the arguments
static jint adjust_after_os();
// Verifies that the given value will fit as a MinHeapFreeRatio. If not, an error
// message is returned in the provided buffer.
static bool verify_MinHeapFreeRatio(FormatBuffer<80>& err_msg, uintx min_heap_free_ratio);
// Verifies that the given value will fit as a MaxHeapFreeRatio. If not, an error
// message is returned in the provided buffer.
static bool verify_MaxHeapFreeRatio(FormatBuffer<80>& err_msg, uintx max_heap_free_ratio);
// Check for consistency in the selection of the garbage collector.
static bool check_gc_consistency();
static void check_deprecated_gcs();