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6655646: dynamic languages need dynamically linked call sites

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Invokedynamic instruction (JSR 292 RI)

Reviewed-by: twisti, never
This commit is contained in:
John R Rose 2009-04-21 23:21:04 -07:00
parent fd05c28901
commit 34c1d72421
65 changed files with 1457 additions and 264 deletions
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41
hotspot/src/share/vm/interpreter/rewriter.hpp
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@ -25,13 +25,44 @@
// The Rewriter adds caches to the constant pool and rewrites bytecode indices
// pointing into the constant pool for better interpreter performance.
class Rewriter: public AllStatic {
class Rewriter: public StackObj {
private:
static void compute_index_maps(constantPoolHandle pool, intArray*& index_map, intStack*& inverse_index_map);
static constantPoolCacheHandle new_constant_pool_cache(intArray& inverse_index_map, TRAPS);
static methodHandle rewrite_method(methodHandle method, intArray& index_map, TRAPS);
static void rewrite_Object_init(methodHandle method, TRAPS);
instanceKlassHandle _klass;
constantPoolHandle _pool;
objArrayHandle _methods;
intArray _cp_map;
intStack _cp_cache_map;
void init_cp_map(int length) {
_cp_map.initialize(length, -1);
// Choose an initial value large enough that we don't get frequent
// calls to grow().
_cp_cache_map.initialize(length / 2);
}
int cp_entry_to_cp_cache(int i) { assert(has_cp_cache(i), "oob"); return _cp_map[i]; }
bool has_cp_cache(int i) { return (uint)i < (uint)_cp_map.length() && _cp_map[i] >= 0; }
int maybe_add_cp_cache_entry(int i) { return has_cp_cache(i) ? _cp_map[i] : add_cp_cache_entry(i); }
int add_cp_cache_entry(int cp_index) {
assert(_cp_map[cp_index] == -1, "not twice on same cp_index");
int cache_index = _cp_cache_map.append(cp_index);
_cp_map.at_put(cp_index, cache_index);
assert(cp_entry_to_cp_cache(cp_index) == cache_index, "");
return cache_index;
}
int add_extra_cp_cache_entry(int main_entry);
// All the work goes in here:
Rewriter(instanceKlassHandle klass, TRAPS);
void compute_index_maps();
void make_constant_pool_cache(TRAPS);
void scan_method(methodOop m);
methodHandle rewrite_jsrs(methodHandle m, TRAPS);
void rewrite_Object_init(methodHandle m, TRAPS);
int rewrite_member_reference(address bcp, int offset);
void rewrite_invokedynamic(address bcp, int offset, int cp_index);
public:
// Driver routine:
static void rewrite(instanceKlassHandle klass, TRAPS);
};