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'origin/GP-2758_HashedFunctionCorrelatorCollision' into patch
(Closes #4683)
This commit is contained in:
Ryan Kurtz 2022-12-07 01:47:26 -05:00
parent 982997256e d2805a673c
commit 4f72df352d
1 changed files with 16 additions and 8 deletions
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24
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/correlate/Hash.java
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@ -19,30 +19,38 @@ package ghidra.program.model.correlate;
* This encodes the main hash value for an n-gram, and the number of Instructions hashed
*
*/
public class Hash implements Comparable<Hash> {
public class Hash implements Comparable<Hash> {
// Initial accumulator values for the hash functions. Should be non-zero for the CRC, but value doesn't matter otherwise
public static final int SEED = 22222;
public static final int ALTERNATE_SEED = 11111; // Must be different from SEED
protected int value; // Actual hash value
protected int size; // Number of instructions involved in hash
@Override
public int compareTo(Hash o) {
return Long.compare(value, o.value);
int cmp = Integer.compare(value, o.value);
if (cmp == 0) {
return Integer.compare(size, o.size);
}
return cmp;
}
@Override
public boolean equals(Object obj) {
return value == ((Hash)obj).value;
Hash o = (Hash) obj;
if (value != o.value) {
return false;
}
return (size == o.size);
}
@Override
public int hashCode() {
return value;
}
public Hash(int val,int sz) {
public Hash(int val, int sz) {
value = val;
size = sz;
}