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author | Dima Kogan <dima@secretsauce.net> | 2014-07-09 01:09:33 -0700 |
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committer | Chanho Park <chanho61.park@samsung.com> | 2014-08-22 20:38:26 +0900 |
commit | 070dc5826c9015cf8d8bfa04c429f419fd9d08ff (patch) | |
tree | 39c356ad730607b5684edf394d35b23a650349f0 /zero.c | |
parent | ac6502b964595e8eb8d5268ed9d79824cacaba91 (diff) | |
download | ltrace-070dc5826c9015cf8d8bfa04c429f419fd9d08ff.tar.gz ltrace-070dc5826c9015cf8d8bfa04c429f419fd9d08ff.tar.bz2 ltrace-070dc5826c9015cf8d8bfa04c429f419fd9d08ff.zip |
Made activate_latent_in() iterations much more efficient
Previously activate_latent_in() iterations looked like
for(export names in lib1) // hash table iteration
{
for(symbol names in lib2) // list iteration
{
if(names equal && libsym->latent)
{
proc_activate_latent_symbol(proc, libsym)
}
}
}
This is inefficient both due to the double iteration but also since iterating
over a hash table in slow (have to look through all cells, even empty ones).
This patch turns this logic into
for(symbol names in lib2) // list iteration
{
if(name in lib1 export names && libsym->latent) // hash table lookup
{
proc_activate_latent_symbol(proc, libsym)
}
}
So there's no more double iteration, and the hash iteration was turned into a
hash lookup. Much better.
Diffstat (limited to 'zero.c')
0 files changed, 0 insertions, 0 deletions