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7071427: AdapterFingerPrint can hold 8 entries per int

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Reviewed-by: kvn
This commit is contained in:
Tom Rodriguez 2011-07-27 15:06:35 -07:00
parent dd43791e4a
commit c895368552
2 changed files with 8 additions and 6 deletions
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11
hotspot/src/share/vm/runtime/sharedRuntime.cpp
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@ -2130,9 +2130,9 @@ class AdapterFingerPrint : public CHeapObj {
public:
AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) {
// The fingerprint is based on the BasicType signature encoded
// into an array of ints with four entries per int.
// into an array of ints with eight entries per int.
int* ptr;
int len = (total_args_passed + 3) >> 2;
int len = (total_args_passed + 7) >> 3;
if (len <= (int)(sizeof(_value._compact) / sizeof(int))) {
_value._compact[0] = _value._compact[1] = _value._compact[2] = 0;
// Storing the signature encoded as signed chars hits about 98%
@ -2145,11 +2145,11 @@ class AdapterFingerPrint : public CHeapObj {
ptr = _value._fingerprint;
}
// Now pack the BasicTypes with 4 per int
// Now pack the BasicTypes with 8 per int
int sig_index = 0;
for (int index = 0; index < len; index++) {
int value = 0;
for (int byte = 0; byte < 4; byte++) {
for (int byte = 0; byte < 8; byte++) {
if (sig_index < total_args_passed) {
value = (value << 4) | adapter_encoding(sig_bt[sig_index++]);
}
@ -2190,8 +2190,9 @@ class AdapterFingerPrint : public CHeapObj {
const char* as_string() {
stringStream st;
st.print("0x");
for (int i = 0; i < length(); i++) {
st.print(PTR_FORMAT, value(i));
st.print("%08x", value(i));
}
return st.as_string();
}