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Squashed 'src/leveldb/' changes from aca1ffc..ae6c262

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ae6c262 Merge branch 'leveldb' into ripple-fork
28fa222 Looks like a bit more delay is needed to smooth the latency.
a18f3e6 Tidy up JobQueue, add ripple_core module
ab82e57 Release leveldb 1.12
02c6259 Release leveldb 1.11
5bbb544 Rate limit compactions with a 25ms pause after each complete file.
8c29c47 LevelDB issue 178 fix: cannot resize a level 0 compaction set
18b245c Added GNU/kFreeBSD kernel name (TARGET_OS)
8be9d12 CondVar::SignalAll was broken, leading to deadlocks on Windows builds. http://code.google.com/p/leveldb/issues/detail?id=149
c9fc070 Upgrade LevelDB to 1.10.0, mostly for better write stall logging.
8215b15 Tweak to variable name to support unity build

git-subtree-dir: src/leveldb
git-subtree-split: ae6c2620b2ef3d5c69e63dc0eda865d6a39fa061
This commit is contained in:
Vinnie Falco
2013-07-01 08:36:32 -07:00
parent c25e98186d
commit adae78ea99
19 changed files with 196 additions and 59 deletions
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13
table/block.cc
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@@ -16,7 +16,7 @@
namespace leveldb {
inline uint32_t Block::NumRestarts() const {
assert(size_ >= 2*sizeof(uint32_t));
assert(size_ >= sizeof(uint32_t));
return DecodeFixed32(data_ + size_ - sizeof(uint32_t));
}
@@ -27,11 +27,12 @@ Block::Block(const BlockContents& contents)
if (size_ < sizeof(uint32_t)) {
size_ = 0; // Error marker
} else {
restart_offset_ = size_ - (1 + NumRestarts()) * sizeof(uint32_t);
if (restart_offset_ > size_ - sizeof(uint32_t)) {
// The size is too small for NumRestarts() and therefore
// restart_offset_ wrapped around.
size_t max_restarts_allowed = (size_-sizeof(uint32_t)) / sizeof(uint32_t);
if (NumRestarts() > max_restarts_allowed) {
// The size is too small for NumRestarts()
size_ = 0;
} else {
restart_offset_ = size_ - (1 + NumRestarts()) * sizeof(uint32_t);
}
}
}
@@ -253,7 +254,7 @@ class Block::Iter : public Iterator {
};
Iterator* Block::NewIterator(const Comparator* cmp) {
if (size_ < 2*sizeof(uint32_t)) {
if (size_ < sizeof(uint32_t)) {
return NewErrorIterator(Status::Corruption("bad block contents"));
}
const uint32_t num_restarts = NumRestarts();