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Update LevelDB to 1.12

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Squashed 'Subtrees/leveldb/' changes from 5bbb544..ab82e57
ab82e57 Release leveldb 1.12
02c6259 Release leveldb 1.11

git-subtree-dir: Subtrees/leveldb
git-subtree-split: ab82e57287e5f811f8b66774cc2a1d2979744c8c
This commit is contained in:
Vinnie Falco
2013-06-22 12:00:23 -07:00
parent 1cb5fb6c6c
commit fcb4c35fce
10 changed files with 166 additions and 23 deletions
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21
Subtrees/leveldb/db/db_impl.cc
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@@ -35,6 +35,8 @@
namespace leveldb {
const int kNumNonTableCacheFiles = 10;
// Information kept for every waiting writer
struct DBImpl::Writer {
Status status;
@@ -92,9 +94,9 @@ Options SanitizeOptions(const std::string& dbname,
Options result = src;
result.comparator = icmp;
result.filter_policy = (src.filter_policy != NULL) ? ipolicy : NULL;
ClipToRange(&result.max_open_files, 20, 50000);
ClipToRange(&result.write_buffer_size, 64<<10, 1<<30);
ClipToRange(&result.block_size, 1<<10, 4<<20);
ClipToRange(&result.max_open_files, 64 + kNumNonTableCacheFiles, 50000);
ClipToRange(&result.write_buffer_size, 64<<10, 1<<30);
ClipToRange(&result.block_size, 1<<10, 4<<20);
if (result.info_log == NULL) {
// Open a log file in the same directory as the db
src.env->CreateDir(dbname); // In case it does not exist
@@ -130,12 +132,13 @@ DBImpl::DBImpl(const Options& options, const std::string& dbname)
log_(NULL),
tmp_batch_(new WriteBatch),
bg_compaction_scheduled_(false),
manual_compaction_(NULL) {
manual_compaction_(NULL),
consecutive_compaction_errors_(0) {
mem_->Ref();
has_imm_.Release_Store(NULL);
// Reserve ten files or so for other uses and give the rest to TableCache.
const int table_cache_size = options.max_open_files - 10;
const int table_cache_size = options.max_open_files - kNumNonTableCacheFiles;
table_cache_ = new TableCache(dbname_, &options_, table_cache_size);
versions_ = new VersionSet(dbname_, &options_, table_cache_,
@@ -619,6 +622,7 @@ void DBImpl::BackgroundCall() {
Status s = BackgroundCompaction();
if (s.ok()) {
// Success
consecutive_compaction_errors_ = 0;
} else if (shutting_down_.Acquire_Load()) {
// Error most likely due to shutdown; do not wait
} else {
@@ -630,7 +634,12 @@ void DBImpl::BackgroundCall() {
Log(options_.info_log, "Waiting after background compaction error: %s",
s.ToString().c_str());
mutex_.Unlock();
env_->SleepForMicroseconds(1000000);
++consecutive_compaction_errors_;
int seconds_to_sleep = 1;
for (int i = 0; i < 3 && i < consecutive_compaction_errors_ - 1; ++i) {
seconds_to_sleep *= 2;
}
env_->SleepForMicroseconds(seconds_to_sleep * 1000000);
mutex_.Lock();
}
}