archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-21 03:24:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

Browse source 
Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
Download patch file Download diff file Expand all files Collapse all files

49
hotspot/src/share/vm/utilities/globalDefinitions.cpp
View file

@ -24,18 +24,23 @@
# include "incls/_precompiled.incl"
# include "incls/_globalDefinitions.cpp.incl"
// Basic error support
// Info for oops within a java object. Defaults are zero so
// things will break badly if incorrectly initialized.
int heapOopSize = 0;
int LogBytesPerHeapOop = 0;
int LogBitsPerHeapOop = 0;
int BytesPerHeapOop = 0;
int BitsPerHeapOop = 0;
void basic_fatal(const char* msg) {
fatal(msg);
}
// Something to help porters sleep at night
void check_basic_types() {
void basic_types_init() {
#ifdef ASSERT
#ifdef _LP64
assert(min_intx == (intx)CONST64(0x8000000000000000), "correct constant");
@ -92,6 +97,7 @@ void check_basic_types() {
case T_LONG:
case T_OBJECT:
case T_ADDRESS: // random raw pointer
case T_NARROWOOP: // compressed pointer
case T_CONFLICT: // might as well support a bottom type
case T_VOID: // padding or other unaddressed word
// layout type must map to itself
@ -134,11 +140,30 @@ void check_basic_types() {
os::java_to_os_priority[9] = JavaPriority9_To_OSPriority;
if(JavaPriority10_To_OSPriority != -1 )
os::java_to_os_priority[10] = JavaPriority10_To_OSPriority;
// Set the size of basic types here (after argument parsing but before
// stub generation).
if (UseCompressedOops) {
// Size info for oops within java objects is fixed
heapOopSize = jintSize;
LogBytesPerHeapOop = LogBytesPerInt;
LogBitsPerHeapOop = LogBitsPerInt;
BytesPerHeapOop = BytesPerInt;
BitsPerHeapOop = BitsPerInt;
} else {
heapOopSize = oopSize;
LogBytesPerHeapOop = LogBytesPerWord;
LogBitsPerHeapOop = LogBitsPerWord;
BytesPerHeapOop = BytesPerWord;
BitsPerHeapOop = BitsPerWord;
}
_type2aelembytes[T_OBJECT] = heapOopSize;
_type2aelembytes[T_ARRAY] = heapOopSize;
}
// Map BasicType to signature character
char type2char_tab[T_CONFLICT+1]={ 0, 0, 0, 0, 'Z', 'C', 'F', 'D', 'B', 'S', 'I', 'J', 'L', '[', 'V', 0, 0};
char type2char_tab[T_CONFLICT+1]={ 0, 0, 0, 0, 'Z', 'C', 'F', 'D', 'B', 'S', 'I', 'J', 'L', '[', 'V', 0, 0, 0};
// Map BasicType to Java type name
const char* type2name_tab[T_CONFLICT+1] = {
@ -155,6 +180,7 @@ const char* type2name_tab[T_CONFLICT+1] = {
"array",
"void",
"*address*",
"*narrowoop*",
"*conflict*"
};
@ -170,7 +196,7 @@ BasicType name2type(const char* name) {
// Map BasicType to size in words
int type2size[T_CONFLICT+1]={ -1, 0, 0, 0, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 0, 1, -1};
int type2size[T_CONFLICT+1]={ -1, 0, 0, 0, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 0, 1, 1, -1};
BasicType type2field[T_CONFLICT+1] = {
(BasicType)0, // 0,
@ -189,7 +215,8 @@ BasicType type2field[T_CONFLICT+1] = {
T_OBJECT, // T_ARRAY = 13,
T_VOID, // T_VOID = 14,
T_ADDRESS, // T_ADDRESS = 15,
T_CONFLICT // T_CONFLICT = 16,
T_NARROWOOP, // T_NARROWOOP= 16,
T_CONFLICT // T_CONFLICT = 17,
};
@ -210,7 +237,8 @@ BasicType type2wfield[T_CONFLICT+1] = {
T_OBJECT, // T_ARRAY = 13,
T_VOID, // T_VOID = 14,
T_ADDRESS, // T_ADDRESS = 15,
T_CONFLICT // T_CONFLICT = 16,
T_NARROWOOP, // T_NARROWOOP = 16,
T_CONFLICT // T_CONFLICT = 17,
};
@ -231,7 +259,8 @@ int _type2aelembytes[T_CONFLICT+1] = {
T_ARRAY_aelem_bytes, // T_ARRAY = 13,
0, // T_VOID = 14,
T_OBJECT_aelem_bytes, // T_ADDRESS = 15,
0 // T_CONFLICT = 16,
T_NARROWOOP_aelem_bytes,// T_NARROWOOP= 16,
0 // T_CONFLICT = 17,
};
#ifdef ASSERT
@ -245,7 +274,7 @@ int type2aelembytes(BasicType t, bool allow_address) {
// The following code is mostly taken from JVM typedefs_md.h and system_md.c
static const jlong high_bit = (jlong)1 << (jlong)63;
static const jlong high_bit = (jlong)1 << (jlong)63;
static const jlong other_bits = ~high_bit;
jlong float2long(jfloat f) {