NixOS/nix
NixOS/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2024-09-19 23:03:53 -04:00
Code Activity

* Ugh, printHash() was very inefficient because it used

Browse source 
ostringstreams.  Around 11% of execution time was spent here (now
  it's 0.5%).
This commit is contained in:
Eelco Dolstra 2006-03-09 17:07:25 +00:00
parent b90c00e63f
commit 18c321308d
1 changed files with 7 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
src/libutil/hash.cc
View file

@ -66,15 +66,17 @@ bool Hash::operator < (const Hash & h) const
}
const string base16Chars = "0123456789abcdef";
string printHash(const Hash & hash)
{
ostringstream str;
char buf[hash.hashSize * 2];
for (unsigned int i = 0; i < hash.hashSize; i++) {
str.fill('0');
str.width(2);
str << hex << (int) hash.hash[i];
buf[i * 2] = base16Chars[hash.hash[i] >> 4];
buf[i * 2 + 1] = base16Chars[hash.hash[i] & 0x0f];
}
return str.str();
return string(buf, hash.hashSize * 2);
}