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8219554: Redundant lookup_common in SymbolTable::add

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Reviewed-by: iklam, coleenp, mikael
This commit is contained in:
Claes Redestad 2019-02-22 16:41:01 +01:00
parent 504562b3a4
commit c97af8c3f7
2 changed files with 6 additions and 15 deletions
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12
src/hotspot/share/classfile/symbolTable.cpp
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@ -436,18 +436,16 @@ Symbol* SymbolTable::lookup_only_unicode(const jchar* name, int utf16_length,
}
}
void SymbolTable::add(ClassLoaderData* loader_data, const constantPoolHandle& cp,
int names_count, const char** names, int* lengths,
int* cp_indices, unsigned int* hashValues, TRAPS) {
void SymbolTable::new_symbols(ClassLoaderData* loader_data, const constantPoolHandle& cp,
int names_count, const char** names, int* lengths,
int* cp_indices, unsigned int* hashValues, TRAPS) {
bool c_heap = !loader_data->is_the_null_class_loader_data();
for (int i = 0; i < names_count; i++) {
const char *name = names[i];
int len = lengths[i];
unsigned int hash = hashValues[i];
Symbol* sym = SymbolTable::the_table()->lookup_common(name, len, hash);
if (sym == NULL) {
sym = SymbolTable::the_table()->do_add_if_needed(name, len, hash, c_heap, CHECK);
}
assert(SymbolTable::the_table()->lookup_shared(name, len, hash) == NULL, "must have checked already");
Symbol* sym = SymbolTable::the_table()->do_add_if_needed(name, len, hash, c_heap, CHECK);
assert(sym->refcount() != 0, "lookup should have incremented the count");
cp->symbol_at_put(cp_indices[i], sym);
}

9
src/hotspot/share/classfile/symbolTable.hpp
View File

@ -144,18 +144,11 @@ private:
Symbol* do_add_if_needed(const char* name, int len, uintx hash, bool heap, TRAPS);
// Adding elements
static void add(ClassLoaderData* loader_data,
const constantPoolHandle& cp, int names_count,
const char** names, int* lengths, int* cp_indices,
unsigned int* hashValues, TRAPS);
static void new_symbols(ClassLoaderData* loader_data,
const constantPoolHandle& cp, int names_count,
const char** name, int* lengths,
int* cp_indices, unsigned int* hashValues,
TRAPS) {
add(loader_data, cp, names_count, name, lengths, cp_indices, hashValues, THREAD);
}
TRAPS);
static Symbol* lookup_shared(const char* name, int len, unsigned int hash);
Symbol* lookup_dynamic(const char* name, int len, unsigned int hash);