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| author | Max Horn | 2008-08-20 10:18:59 +0000 |
|---|---|---|
| committer | Max Horn | 2008-08-20 10:18:59 +0000 |
| commit | 47429f219750033c011dadfd5e9106cd5bfcb5b9 (patch) | |
| tree | f3775dba37cccc6304b18c8fc2984577a3d5b9c8 /common/hashmap.cpp | |
| parent | 35b02acb39f9291a198e49bca425b131ae550096 (diff) | |
| download | scummvm-rg350-47429f219750033c011dadfd5e9106cd5bfcb5b9.tar.gz scummvm-rg350-47429f219750033c011dadfd5e9106cd5bfcb5b9.tar.bz2 scummvm-rg350-47429f219750033c011dadfd5e9106cd5bfcb5b9.zip | |
Extended HashMap debug output
svn-id: r34051
Diffstat (limited to 'common/hashmap.cpp')
| -rw-r--r-- | common/hashmap.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/common/hashmap.cpp b/common/hashmap.cpp index 4749234740..2bd1d48b92 100644 --- a/common/hashmap.cpp +++ b/common/hashmap.cpp @@ -89,5 +89,36 @@ uint nextTableSize(uint x) { return primes[i]; } +#ifdef DEBUG_HASH_COLLISIONS +static double + g_collisions = 0, + g_lookups = 0, + g_collPerLook = 0, + g_arrsize = 0, + g_nele = 0; +static int g_max_arrsize = 0, g_max_nele = 0; +static int g_totalHashmaps = 0; + +void updateHashCollisionStats(int collisions, int lookups, int arrsize, int nele) { + g_collisions += collisions; + g_lookups += lookups; + if (lookups) + g_collPerLook += (double)collisions / (double)lookups; + g_arrsize += arrsize; + g_nele += nele; + g_totalHashmaps++; + + g_max_arrsize = MAX(g_max_arrsize, arrsize); + g_max_nele = MAX(g_max_nele, nele); + + fprintf(stdout, "%d hashmaps: colls %.1f; lookups %.1f; ratio %.3f%%; size %f (max: %d); capacity %f (max: %d)\n", + g_totalHashmaps, + g_collisions / g_totalHashmaps, + g_lookups / g_totalHashmaps, + 100 * g_collPerLook / g_totalHashmaps, + g_nele / g_totalHashmaps, g_max_nele, + g_arrsize / g_totalHashmaps, g_max_arrsize); +} +#endif } // End of namespace Common |