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6770949: minor tweaks before 6655638

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Minor cleanups & tuning of array.hpp, debug.cpp, growableArray.hpp, hashtable.cpp

Reviewed-by: kvn
This commit is contained in:
John R Rose 2008-11-12 23:26:45 -08:00
parent 849e0ffb04
commit 4e2c4fb4bd
4 changed files with 63 additions and 20 deletions
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17
hotspot/src/share/vm/utilities/growableArray.hpp
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@ -111,6 +111,12 @@ class GenericGrowableArray : public ResourceObj {
}
void* raw_allocate(int elementSize);
// some uses pass the Thread explicitly for speed (4990299 tuning)
void* raw_allocate(Thread* thread, int elementSize) {
assert(on_stack(), "fast ResourceObj path only");
return (void*)resource_allocate_bytes(thread, elementSize * _max);
}
};
template<class E> class GrowableArray : public GenericGrowableArray {
@ -121,6 +127,11 @@ template<class E> class GrowableArray : public GenericGrowableArray {
void raw_at_put_grow(int i, const E& p, const E& fill);
void clear_and_deallocate();
public:
GrowableArray(Thread* thread, int initial_size) : GenericGrowableArray(initial_size, 0, false) {
_data = (E*)raw_allocate(thread, sizeof(E));
for (int i = 0; i < _max; i++) ::new ((void*)&_data[i]) E();
}
GrowableArray(int initial_size, bool C_heap = false) : GenericGrowableArray(initial_size, 0, C_heap) {
_data = (E*)raw_allocate(sizeof(E));
for (int i = 0; i < _max; i++) ::new ((void*)&_data[i]) E();
@ -159,10 +170,12 @@ template<class E> class GrowableArray : public GenericGrowableArray {
void print();
void append(const E& elem) {
int append(const E& elem) {
check_nesting();
if (_len == _max) grow(_len);
_data[_len++] = elem;
int idx = _len++;
_data[idx] = elem;
return idx;
}
void append_if_missing(const E& elem) {