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6990754: Use native memory and reference counting to implement SymbolTable

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Move symbols from permgen into C heap and reference count them

Reviewed-by: never, acorn, jmasa, stefank
This commit is contained in:
Coleen Phillimore 2011-01-27 16:11:27 -08:00
parent 950858350d
commit 7b4f8073f0
223 changed files with 3783 additions and 3641 deletions
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21
hotspot/src/share/vm/memory/sharedHeap.cpp
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@ -46,7 +46,6 @@ enum SH_process_strong_roots_tasks {
SH_PS_Management_oops_do,
SH_PS_SystemDictionary_oops_do,
SH_PS_jvmti_oops_do,
SH_PS_vmSymbols_oops_do,
SH_PS_SymbolTable_oops_do,
SH_PS_StringTable_oops_do,
SH_PS_CodeCache_oops_do,
@ -169,11 +168,6 @@ void SharedHeap::process_strong_roots(bool activate_scope,
}
if (!_process_strong_tasks->is_task_claimed(SH_PS_SymbolTable_oops_do)) {
if (so & SO_Symbols) {
SymbolTable::oops_do(roots);
}
// Verify if the symbol table contents are in the perm gen
NOT_PRODUCT(SymbolTable::oops_do(&assert_is_perm_closure));
}
if (!_process_strong_tasks->is_task_claimed(SH_PS_StringTable_oops_do)) {
@ -210,20 +204,6 @@ void SharedHeap::process_strong_roots(bool activate_scope,
NOT_PRODUCT(CodeCache::asserted_non_scavengable_nmethods_do(&assert_code_is_perm));
}
// Roots that should point only into permanent generation.
{
OopClosure* blk = NULL;
if (collecting_perm_gen) {
blk = roots;
} else {
debug_only(blk = &assert_is_perm_closure);
}
if (blk != NULL) {
if (!_process_strong_tasks->is_task_claimed(SH_PS_vmSymbols_oops_do))
vmSymbols::oops_do(blk);
}
}
if (!collecting_perm_gen) {
// All threads perform this; coordination is handled internally.
@ -273,7 +253,6 @@ void SharedHeap::process_weak_roots(OopClosure* root_closure,
JNIHandles::weak_oops_do(&always_true, root_closure);
CodeCache::blobs_do(code_roots);
SymbolTable::oops_do(root_closure);
if (UseSharedSpaces && !DumpSharedSpaces) {
SkipAdjustingSharedStrings skip_closure(root_closure);
StringTable::oops_do(&skip_closure);