Speed up Snappy uncompression, new Logger interface.

- Removed one copy of an uncompressed block contents changing
  the signature of Snappy_Uncompress() so it uncompresses into a
  flat array instead of a std::string.
        
  Speeds up readrandom ~10%.

- Instead of a combination of Env/WritableFile, we now have a
  Logger interface that can be easily overridden applications
  that want to supply their own logging.

- Separated out the gcc and Sun Studio parts of atomic_pointer.h
  so we can use 'asm', 'volatile' keywords for Sun Studio.




git-svn-id: https://leveldb.googlecode.com/svn/trunk@39 62dab493-f737-651d-591e-8d6aee1b9529

1 files changed, 2 insertions, 2 deletions

diff --git a/db/version_set.cc b/db/version_set.cc
index 62bd6dd..5040b72 100644
--- a/db/version_set.cc
+++ b/db/version_set.cc
@@ -1124,7 +1124,7 @@ void VersionSet::SetupOtherInputs(Compaction* c) {
       std::vector<FileMetaData*> expanded1;
       GetOverlappingInputs(level+1, new_start, new_limit, &expanded1);
       if (expanded1.size() == c->inputs_[1].size()) {
-        Log(env_, options_->info_log,
+        Log(options_->info_log,
             "Expanding@%d %d+%d to %d+%d\n",
             level,
             int(c->inputs_[0].size()),
@@ -1147,7 +1147,7 @@ void VersionSet::SetupOtherInputs(Compaction* c) {
   }
 
   if (false) {
-    Log(env_, options_->info_log, "Compacting %d '%s' .. '%s'",
+    Log(options_->info_log, "Compacting %d '%s' .. '%s'",
         level,
         EscapeString(smallest.Encode()).c_str(),
         EscapeString(largest.Encode()).c_str());