Gavin Andresen
12 years ago
42 changed files with 2032 additions and 990 deletions
@ -0,0 +1,17 @@
@@ -0,0 +1,17 @@
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Release 1.2 2011-05-16 |
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---------------------- |
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|
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Fixes for larger databases (tested up to one billion 100-byte entries, |
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i.e., ~100GB). |
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|
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(1) Place hard limit on number of level-0 files. This fixes errors |
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of the form "too many open files". |
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(2) Fixed memtable management. Before the fix, a heavy write burst |
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could cause unbounded memory usage. |
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A fix for a logging bug where the reader would incorrectly complain |
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about corruption. |
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Allow public access to WriteBatch contents so that users can easily |
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wrap a DB. |
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# Building LevelDB On Windows |
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## Prereqs |
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Install the [Windows Software Development Kit version 7.1](http://www.microsoft.com/downloads/dlx/en-us/listdetailsview.aspx?FamilyID=6b6c21d2-2006-4afa-9702-529fa782d63b). |
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Download and extract the [Snappy source distribution](http://snappy.googlecode.com/files/snappy-1.0.5.tar.gz) |
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1. Open the "Windows SDK 7.1 Command Prompt" : |
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Start Menu -> "Microsoft Windows SDK v7.1" > "Windows SDK 7.1 Command Prompt" |
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2. Change the directory to the leveldb project |
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|
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## Building the Static lib |
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* 32 bit Version |
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setenv /x86 |
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msbuild.exe /p:Configuration=Release /p:Platform=Win32 /p:Snappy=..\snappy-1.0.5 |
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* 64 bit Version |
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setenv /x64 |
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msbuild.exe /p:Configuration=Release /p:Platform=x64 /p:Snappy=..\snappy-1.0.5 |
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## Building and Running the Benchmark app |
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* 32 bit Version |
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setenv /x86 |
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msbuild.exe /p:Configuration=Benchmark /p:Platform=Win32 /p:Snappy=..\snappy-1.0.5 |
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Benchmark\leveldb.exe |
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* 64 bit Version |
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setenv /x64 |
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msbuild.exe /p:Configuration=Benchmark /p:Platform=x64 /p:Snappy=..\snappy-1.0.5 |
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x64\Benchmark\leveldb.exe |
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@ -0,0 +1,238 @@
@@ -0,0 +1,238 @@
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// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
|
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// Use of this source code is governed by a BSD-style license that can be
|
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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|
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#include <stdio.h> |
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#include "db/dbformat.h" |
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#include "db/filename.h" |
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#include "db/log_reader.h" |
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#include "db/version_edit.h" |
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#include "db/write_batch_internal.h" |
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#include "leveldb/env.h" |
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#include "leveldb/iterator.h" |
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#include "leveldb/options.h" |
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#include "leveldb/status.h" |
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#include "leveldb/table.h" |
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#include "leveldb/write_batch.h" |
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#include "util/logging.h" |
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|
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namespace leveldb { |
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|
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namespace { |
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bool GuessType(const std::string& fname, FileType* type) { |
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size_t pos = fname.rfind('/'); |
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std::string basename; |
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if (pos == std::string::npos) { |
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basename = fname; |
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} else { |
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basename = std::string(fname.data() + pos + 1, fname.size() - pos - 1); |
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} |
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uint64_t ignored; |
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return ParseFileName(basename, &ignored, type); |
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} |
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|
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// Notified when log reader encounters corruption.
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class CorruptionReporter : public log::Reader::Reporter { |
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public: |
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virtual void Corruption(size_t bytes, const Status& status) { |
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printf("corruption: %d bytes; %s\n", |
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static_cast<int>(bytes), |
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status.ToString().c_str()); |
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} |
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}; |
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|
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// Print contents of a log file. (*func)() is called on every record.
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bool PrintLogContents(Env* env, const std::string& fname, |
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void (*func)(Slice)) { |
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SequentialFile* file; |
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Status s = env->NewSequentialFile(fname, &file); |
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if (!s.ok()) { |
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fprintf(stderr, "%s\n", s.ToString().c_str()); |
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return false; |
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} |
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CorruptionReporter reporter; |
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log::Reader reader(file, &reporter, true, 0); |
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Slice record; |
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std::string scratch; |
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while (reader.ReadRecord(&record, &scratch)) { |
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printf("--- offset %llu; ", |
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static_cast<unsigned long long>(reader.LastRecordOffset())); |
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(*func)(record); |
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} |
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delete file; |
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return true; |
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} |
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// Called on every item found in a WriteBatch.
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class WriteBatchItemPrinter : public WriteBatch::Handler { |
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public: |
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uint64_t offset_; |
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uint64_t sequence_; |
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virtual void Put(const Slice& key, const Slice& value) { |
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printf(" put '%s' '%s'\n", |
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EscapeString(key).c_str(), |
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EscapeString(value).c_str()); |
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} |
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virtual void Delete(const Slice& key) { |
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printf(" del '%s'\n", |
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EscapeString(key).c_str()); |
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} |
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}; |
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// Called on every log record (each one of which is a WriteBatch)
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// found in a kLogFile.
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static void WriteBatchPrinter(Slice record) { |
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if (record.size() < 12) { |
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printf("log record length %d is too small\n", |
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static_cast<int>(record.size())); |
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return; |
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} |
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WriteBatch batch; |
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WriteBatchInternal::SetContents(&batch, record); |
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printf("sequence %llu\n", |
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static_cast<unsigned long long>(WriteBatchInternal::Sequence(&batch))); |
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WriteBatchItemPrinter batch_item_printer; |
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Status s = batch.Iterate(&batch_item_printer); |
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if (!s.ok()) { |
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printf(" error: %s\n", s.ToString().c_str()); |
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} |
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} |
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bool DumpLog(Env* env, const std::string& fname) { |
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return PrintLogContents(env, fname, WriteBatchPrinter); |
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} |
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// Called on every log record (each one of which is a WriteBatch)
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// found in a kDescriptorFile.
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static void VersionEditPrinter(Slice record) { |
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VersionEdit edit; |
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Status s = edit.DecodeFrom(record); |
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if (!s.ok()) { |
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printf("%s\n", s.ToString().c_str()); |
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return; |
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} |
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printf("%s", edit.DebugString().c_str()); |
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} |
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bool DumpDescriptor(Env* env, const std::string& fname) { |
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return PrintLogContents(env, fname, VersionEditPrinter); |
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} |
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bool DumpTable(Env* env, const std::string& fname) { |
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uint64_t file_size; |
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RandomAccessFile* file = NULL; |
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Table* table = NULL; |
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Status s = env->GetFileSize(fname, &file_size); |
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if (s.ok()) { |
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s = env->NewRandomAccessFile(fname, &file); |
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} |
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if (s.ok()) { |
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// We use the default comparator, which may or may not match the
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// comparator used in this database. However this should not cause
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// problems since we only use Table operations that do not require
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// any comparisons. In particular, we do not call Seek or Prev.
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s = Table::Open(Options(), file, file_size, &table); |
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} |
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if (!s.ok()) { |
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fprintf(stderr, "%s\n", s.ToString().c_str()); |
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delete table; |
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delete file; |
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return false; |
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} |
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ReadOptions ro; |
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ro.fill_cache = false; |
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Iterator* iter = table->NewIterator(ro); |
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for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { |
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ParsedInternalKey key; |
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if (!ParseInternalKey(iter->key(), &key)) { |
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printf("badkey '%s' => '%s'\n", |
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EscapeString(iter->key()).c_str(), |
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EscapeString(iter->value()).c_str()); |
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} else { |
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char kbuf[20]; |
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const char* type; |
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if (key.type == kTypeDeletion) { |
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type = "del"; |
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} else if (key.type == kTypeValue) { |
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type = "val"; |
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} else { |
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snprintf(kbuf, sizeof(kbuf), "%d", static_cast<int>(key.type)); |
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type = kbuf; |
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} |
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printf("'%s' @ %8llu : %s => '%s'\n", |
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EscapeString(key.user_key).c_str(), |
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static_cast<unsigned long long>(key.sequence), |
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type, |
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EscapeString(iter->value()).c_str()); |
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} |
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} |
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s = iter->status(); |
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if (!s.ok()) { |
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printf("iterator error: %s\n", s.ToString().c_str()); |
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} |
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delete iter; |
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delete table; |
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delete file; |
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return true; |
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} |
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bool DumpFile(Env* env, const std::string& fname) { |
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FileType ftype; |
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if (!GuessType(fname, &ftype)) { |
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fprintf(stderr, "%s: unknown file type\n", fname.c_str()); |
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return false; |
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} |
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switch (ftype) { |
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case kLogFile: return DumpLog(env, fname); |
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case kDescriptorFile: return DumpDescriptor(env, fname); |
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case kTableFile: return DumpTable(env, fname); |
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default: { |
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fprintf(stderr, "%s: not a dump-able file type\n", fname.c_str()); |
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break; |
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} |
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} |
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return false; |
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} |
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bool HandleDumpCommand(Env* env, char** files, int num) { |
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bool ok = true; |
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for (int i = 0; i < num; i++) { |
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ok &= DumpFile(env, files[i]); |
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} |
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return ok; |
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} |
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} |
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} // namespace leveldb
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static void Usage() { |
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fprintf( |
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stderr, |
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"Usage: leveldbutil command...\n" |
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" dump files... -- dump contents of specified files\n" |
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); |
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} |
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int main(int argc, char** argv) { |
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leveldb::Env* env = leveldb::Env::Default(); |
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bool ok = true; |
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if (argc < 2) { |
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Usage(); |
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ok = false; |
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} else { |
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std::string command = argv[1]; |
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if (command == "dump") { |
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ok = leveldb::HandleDumpCommand(env, argv+2, argc-2); |
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} else { |
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Usage(); |
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ok = false; |
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} |
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} |
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return (ok ? 0 : 1); |
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} |
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@ -0,0 +1,59 @@
@@ -0,0 +1,59 @@
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// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
|
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#ifndef STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H |
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// Some environments provide custom macros to aid in static thread-safety
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// analysis. Provide empty definitions of such macros unless they are already
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// defined.
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#ifndef EXCLUSIVE_LOCKS_REQUIRED |
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#define EXCLUSIVE_LOCKS_REQUIRED(...) |
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#endif |
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#ifndef SHARED_LOCKS_REQUIRED |
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#define SHARED_LOCKS_REQUIRED(...) |
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#endif |
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#ifndef LOCKS_EXCLUDED |
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#define LOCKS_EXCLUDED(...) |
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#endif |
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#ifndef LOCK_RETURNED |
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#define LOCK_RETURNED(x) |
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#endif |
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#ifndef LOCKABLE |
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#define LOCKABLE |
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#endif |
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#ifndef SCOPED_LOCKABLE |
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#define SCOPED_LOCKABLE |
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#endif |
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#ifndef EXCLUSIVE_LOCK_FUNCTION |
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#define EXCLUSIVE_LOCK_FUNCTION(...) |
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#endif |
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#ifndef SHARED_LOCK_FUNCTION |
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#define SHARED_LOCK_FUNCTION(...) |
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#endif |
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#ifndef EXCLUSIVE_TRYLOCK_FUNCTION |
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#define EXCLUSIVE_TRYLOCK_FUNCTION(...) |
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#endif |
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#ifndef SHARED_TRYLOCK_FUNCTION |
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#define SHARED_TRYLOCK_FUNCTION(...) |
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#endif |
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#ifndef UNLOCK_FUNCTION |
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#define UNLOCK_FUNCTION(...) |
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#endif |
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#ifndef NO_THREAD_SAFETY_ANALYSIS |
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#define NO_THREAD_SAFETY_ANALYSIS |
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#endif |
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#endif // STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H
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@ -1,591 +0,0 @@
@@ -1,591 +0,0 @@
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
|
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include <deque> |
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#ifdef LEVELDB_PLATFORM_WINDOWS |
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#include <windows.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <sys/stat.h> |
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#include <sys/types.h> |
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#include <time.h> |
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#include <io.h> |
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#else |
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#include <dirent.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <pthread.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <sys/mman.h> |
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#include <sys/stat.h> |
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#include <sys/time.h> |
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#include <sys/types.h> |
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#include <sys/param.h> |
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#include <time.h> |
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#include <unistd.h> |
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#endif |
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#if defined(LEVELDB_PLATFORM_ANDROID) |
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#include <sys/stat.h> |
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#endif |
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#include "leveldb/env.h" |
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#include "leveldb/slice.h" |
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#ifdef LEVELDB_PLATFORM_WINDOWS |
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#include "util/win_logger.h" |
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#else |
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#include "util/posix_logger.h" |
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#endif |
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#include "port/port.h" |
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#include "util/logging.h" |
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#ifdef __linux |
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#include <sys/sysinfo.h> |
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#include <linux/unistd.h> |
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#endif |
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|
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#include <fstream> |
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|
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// Boost includes - see WINDOWS file to see which modules to install
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#include <boost/date_time/gregorian/gregorian.hpp> |
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#include <boost/date_time/posix_time/posix_time.hpp> |
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#include <boost/filesystem/convenience.hpp> |
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#include <boost/thread/once.hpp> |
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#include <boost/thread/thread.hpp> |
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#include <boost/bind.hpp> |
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#include <boost/scoped_ptr.hpp> |
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#include <boost/interprocess/sync/file_lock.hpp> |
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#include <boost/thread/condition_variable.hpp> |
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|
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namespace leveldb { |
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namespace { |
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|
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// returns the ID of the current process
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static boost::uint32_t current_process_id(void) { |
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#ifdef _WIN32 |
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return static_cast<boost::uint32_t>(::GetCurrentProcessId()); |
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#else |
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return static_cast<boost::uint32_t>(::getpid()); |
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#endif |
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} |
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|
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// returns the ID of the current thread
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static boost::uint32_t current_thread_id(void) { |
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#ifdef _WIN32 |
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return static_cast<boost::uint32_t>(::GetCurrentThreadId()); |
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#else |
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#ifdef __linux |
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return static_cast<boost::uint32_t>(::syscall(__NR_gettid)); |
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#else |
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// just return the pid
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return current_process_id(); |
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#endif |
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#endif |
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} |
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|
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static char global_read_only_buf[0x8000]; |
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|
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class PosixSequentialFile: public SequentialFile { |
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private: |
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std::string filename_; |
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FILE* file_; |
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|
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public: |
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PosixSequentialFile(const std::string& fname, FILE* f) |
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: filename_(fname), file_(f) { } |
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virtual ~PosixSequentialFile() { fclose(file_); } |
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|
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virtual Status Read(size_t n, Slice* result, char* scratch) { |
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Status s; |
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#if defined(BSD) || defined(__MINGW32__) |
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// fread_unlocked doesn't exist on FreeBSD or MingW
|
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size_t r = fread(scratch, 1, n, file_); |
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#else |
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size_t r = fread_unlocked(scratch, 1, n, file_); |
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#endif |
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*result = Slice(scratch, r); |
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if (r < n) { |
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if (feof(file_)) { |
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// We leave status as ok if we hit the end of the file
|
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} else { |
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// A partial read with an error: return a non-ok status
|
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s = Status::IOError(filename_, strerror(errno)); |
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} |
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} |
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return s; |
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} |
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|
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virtual Status Skip(uint64_t n) { |
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if (fseek(file_, n, SEEK_CUR)) { |
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return Status::IOError(filename_, strerror(errno)); |
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} |
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return Status::OK(); |
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} |
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}; |
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|
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class PosixRandomAccessFile: public RandomAccessFile { |
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private: |
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std::string filename_; |
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int fd_; |
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mutable boost::mutex mu_; |
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|
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public: |
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PosixRandomAccessFile(const std::string& fname, int fd) |
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: filename_(fname), fd_(fd) { } |
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virtual ~PosixRandomAccessFile() { close(fd_); } |
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|
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virtual Status Read(uint64_t offset, size_t n, Slice* result, |
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char* scratch) const { |
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Status s; |
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#ifdef LEVELDB_PLATFORM_WINDOWS |
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// no pread on Windows so we emulate it with a mutex
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boost::unique_lock<boost::mutex> lock(mu_); |
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|
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if (::_lseeki64(fd_, offset, SEEK_SET) == -1L) { |
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return Status::IOError(filename_, strerror(errno)); |
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} |
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|
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int r = ::_read(fd_, scratch, n); |
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*result = Slice(scratch, (r < 0) ? 0 : r); |
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lock.unlock(); |
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#else |
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ssize_t r = pread(fd_, scratch, n, static_cast<off_t>(offset)); |
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*result = Slice(scratch, (r < 0) ? 0 : r); |
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#endif |
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if (r < 0) { |
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// An error: return a non-ok status
|
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s = Status::IOError(filename_, strerror(errno)); |
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} |
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return s; |
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} |
||||
}; |
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|
||||
// We preallocate up to an extra megabyte and use memcpy to append new
|
||||
// data to the file. This is safe since we either properly close the
|
||||
// file before reading from it, or for log files, the reading code
|
||||
// knows enough to skip zero suffixes.
|
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|
||||
class BoostFile : public WritableFile { |
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|
||||
public: |
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explicit BoostFile(std::string path) : path_(path), written_(0) { |
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Open(); |
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} |
||||
|
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virtual ~BoostFile() { |
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Close(); |
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} |
||||
|
||||
private: |
||||
void Open() { |
||||
// we truncate the file as implemented in env_posix
|
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file_.open(path_.generic_string().c_str(), |
||||
std::ios_base::trunc | std::ios_base::out | std::ios_base::binary); |
||||
written_ = 0; |
||||
} |
||||
|
||||
public: |
||||
virtual Status Append(const Slice& data) { |
||||
Status result; |
||||
file_.write(data.data(), data.size()); |
||||
if (!file_.good()) { |
||||
result = Status::IOError( |
||||
path_.generic_string() + " Append", "cannot write"); |
||||
} |
||||
return result; |
||||
} |
||||
|
||||
virtual Status Close() { |
||||
Status result; |
||||
|
||||
try { |
||||
if (file_.is_open()) { |
||||
Sync(); |
||||
file_.close(); |
||||
} |
||||
} catch (const std::exception & e) { |
||||
result = Status::IOError(path_.generic_string() + " close", e.what()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
virtual Status Flush() { |
||||
file_.flush(); |
||||
return Status::OK(); |
||||
} |
||||
|
||||
virtual Status Sync() { |
||||
Status result; |
||||
try { |
||||
Flush(); |
||||
} catch (const std::exception & e) { |
||||
result = Status::IOError(path_.string() + " sync", e.what()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
private: |
||||
boost::filesystem::path path_; |
||||
boost::uint64_t written_; |
||||
std::ofstream file_; |
||||
}; |
||||
|
||||
|
||||
|
||||
class BoostFileLock : public FileLock { |
||||
public: |
||||
boost::interprocess::file_lock fl_; |
||||
}; |
||||
|
||||
class PosixEnv : public Env { |
||||
public: |
||||
PosixEnv(); |
||||
virtual ~PosixEnv() { |
||||
fprintf(stderr, "Destroying Env::Default()\n"); |
||||
exit(1); |
||||
} |
||||
|
||||
virtual Status NewSequentialFile(const std::string& fname, |
||||
SequentialFile** result) { |
||||
FILE* f = fopen(fname.c_str(), "rb"); |
||||
if (f == NULL) { |
||||
*result = NULL; |
||||
return Status::IOError(fname, strerror(errno)); |
||||
} else { |
||||
*result = new PosixSequentialFile(fname, f); |
||||
return Status::OK(); |
||||
} |
||||
} |
||||
|
||||
virtual Status NewRandomAccessFile(const std::string& fname, |
||||
RandomAccessFile** result) { |
||||
#ifdef LEVELDB_PLATFORM_WINDOWS |
||||
int fd = _open(fname.c_str(), _O_RDONLY | _O_RANDOM | _O_BINARY); |
||||
#else |
||||
int fd = open(fname.c_str(), O_RDONLY); |
||||
#endif |
||||
if (fd < 0) { |
||||
*result = NULL; |
||||
return Status::IOError(fname, strerror(errno)); |
||||
} |
||||
*result = new PosixRandomAccessFile(fname, fd); |
||||
return Status::OK(); |
||||
} |
||||
|
||||
virtual Status NewWritableFile(const std::string& fname, |
||||
WritableFile** result) { |
||||
Status s; |
||||
try { |
||||
// will create a new empty file to write to
|
||||
*result = new BoostFile(fname); |
||||
} |
||||
catch (const std::exception & e) { |
||||
s = Status::IOError(fname, e.what()); |
||||
} |
||||
|
||||
return s; |
||||
} |
||||
|
||||
virtual bool FileExists(const std::string& fname) { |
||||
return boost::filesystem::exists(fname); |
||||
} |
||||
|
||||
virtual Status GetChildren(const std::string& dir, |
||||
std::vector<std::string>* result) { |
||||
result->clear(); |
||||
|
||||
boost::system::error_code ec; |
||||
boost::filesystem::directory_iterator current(dir, ec); |
||||
if (ec != 0) { |
||||
return Status::IOError(dir, ec.message()); |
||||
} |
||||
|
||||
boost::filesystem::directory_iterator end; |
||||
|
||||
for(; current != end; ++current) { |
||||
result->push_back(current->path().filename().generic_string()); |
||||
} |
||||
|
||||
return Status::OK(); |
||||
} |
||||
|
||||
virtual Status DeleteFile(const std::string& fname) { |
||||
boost::system::error_code ec; |
||||
|
||||
boost::filesystem::remove(fname, ec); |
||||
|
||||
Status result; |
||||
|
||||
if (ec != 0) { |
||||
result = Status::IOError(fname, ec.message()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
virtual Status CreateDir(const std::string& name) { |
||||
Status result; |
||||
|
||||
if (boost::filesystem::exists(name) && |
||||
boost::filesystem::is_directory(name)) { |
||||
return result; |
||||
} |
||||
|
||||
boost::system::error_code ec; |
||||
|
||||
if (!boost::filesystem::create_directories(name, ec)) { |
||||
result = Status::IOError(name, ec.message()); |
||||
} |
||||
|
||||
return result; |
||||
}; |
||||
|
||||
virtual Status DeleteDir(const std::string& name) { |
||||
Status result; |
||||
|
||||
boost::system::error_code ec; |
||||
if (!boost::filesystem::remove_all(name, ec)) { |
||||
result = Status::IOError(name, ec.message()); |
||||
} |
||||
|
||||
return result; |
||||
}; |
||||
|
||||
virtual Status GetFileSize(const std::string& fname, uint64_t* size) { |
||||
boost::system::error_code ec; |
||||
|
||||
Status result; |
||||
|
||||
*size = static_cast<uint64_t>(boost::filesystem::file_size(fname, ec)); |
||||
if (ec != 0) { |
||||
*size = 0; |
||||
result = Status::IOError(fname, ec.message()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
virtual Status RenameFile(const std::string& src, const std::string& target) { |
||||
boost::system::error_code ec; |
||||
|
||||
boost::filesystem::rename(src, target, ec); |
||||
|
||||
Status result; |
||||
|
||||
if (ec != 0) { |
||||
result = Status::IOError(src, ec.message()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
virtual Status LockFile(const std::string& fname, FileLock** lock) { |
||||
*lock = NULL; |
||||
|
||||
Status result; |
||||
|
||||
try { |
||||
if (!boost::filesystem::exists(fname)) { |
||||
std::ofstream of(fname.c_str(), std::ios_base::trunc | std::ios_base::out); |
||||
} |
||||
|
||||
assert(boost::filesystem::exists(fname)); |
||||
|
||||
boost::interprocess::file_lock fl(fname.c_str()); |
||||
BoostFileLock * my_lock = new BoostFileLock(); |
||||
fl.swap(my_lock->fl_); |
||||
if (!my_lock->fl_.try_lock()) { |
||||
return Status::IOError("database already in use: could not acquire exclusive lock"); |
||||
} |
||||
*lock = my_lock; |
||||
} catch (const std::exception & e) { |
||||
result = Status::IOError("lock " + fname, e.what()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
virtual Status UnlockFile(FileLock* lock) { |
||||
|
||||
Status result; |
||||
|
||||
try { |
||||
BoostFileLock * my_lock = static_cast<BoostFileLock *>(lock); |
||||
my_lock->fl_.unlock(); |
||||
delete my_lock; |
||||
} catch (const std::exception & e) { |
||||
result = Status::IOError("unlock", e.what()); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
virtual void Schedule(void (*function)(void*), void* arg); |
||||
|
||||
virtual void StartThread(void (*function)(void* arg), void* arg); |
||||
|
||||
virtual Status GetTestDirectory(std::string* result) { |
||||
boost::system::error_code ec; |
||||
boost::filesystem::path temp_dir = |
||||
boost::filesystem::temp_directory_path(ec); |
||||
if (ec != 0) { |
||||
temp_dir = "tmp"; |
||||
} |
||||
|
||||
temp_dir /= "leveldb_tests"; |
||||
temp_dir /= boost::lexical_cast<std::string>(current_process_id()); |
||||
|
||||
// Directory may already exist
|
||||
CreateDir(temp_dir.generic_string()); |
||||
|
||||
*result = temp_dir.generic_string(); |
||||
|
||||
return Status::OK(); |
||||
} |
||||
|
||||
#ifndef LEVELDB_PLATFORM_WINDOWS |
||||
static uint64_t gettid() { |
||||
pthread_t tid = pthread_self(); |
||||
uint64_t thread_id = 0; |
||||
memcpy(&thread_id, &tid, std::min(sizeof(thread_id), sizeof(tid))); |
||||
return thread_id; |
||||
} |
||||
#endif |
||||
|
||||
virtual Status NewLogger(const std::string& fname, Logger** result) { |
||||
FILE* f = fopen(fname.c_str(), "wt"); |
||||
if (f == NULL) { |
||||
*result = NULL; |
||||
return Status::IOError(fname, strerror(errno)); |
||||
} else { |
||||
#ifdef LEVELDB_PLATFORM_WINDOWS |
||||
*result = new WinLogger(f); |
||||
#else |
||||
*result = new PosixLogger(f, &PosixEnv::gettid); |
||||
#endif |
||||
return Status::OK(); |
||||
} |
||||
} |
||||
|
||||
virtual uint64_t NowMicros() { |
||||
return static_cast<uint64_t>( |
||||
boost::posix_time::microsec_clock::universal_time() |
||||
.time_of_day().total_microseconds()); |
||||
} |
||||
|
||||
virtual void SleepForMicroseconds(int micros) { |
||||
boost::this_thread::sleep(boost::posix_time::microseconds(micros)); |
||||
} |
||||
|
||||
private: |
||||
void PthreadCall(const char* label, int result) { |
||||
if (result != 0) { |
||||
fprintf(stderr, "pthread %s: %s\n", label, strerror(result)); |
||||
exit(1); |
||||
} |
||||
} |
||||
|
||||
// BGThread() is the body of the background thread
|
||||
void BGThread(); |
||||
|
||||
static void* BGThreadWrapper(void* arg) { |
||||
reinterpret_cast<PosixEnv*>(arg)->BGThread(); |
||||
return NULL; |
||||
} |
||||
|
||||
boost::mutex mu_; |
||||
boost::condition_variable bgsignal_; |
||||
boost::scoped_ptr<boost::thread> bgthread_; |
||||
|
||||
// Entry per Schedule() call
|
||||
struct BGItem { void* arg; void (*function)(void*); }; |
||||
typedef std::deque<BGItem> BGQueue; |
||||
BGQueue queue_; |
||||
}; |
||||
|
||||
PosixEnv::PosixEnv() { } |
||||
|
||||
void PosixEnv::Schedule(void (*function)(void*), void* arg) { |
||||
boost::unique_lock<boost::mutex> lock(mu_); |
||||
|
||||
// Start background thread if necessary
|
||||
if (!bgthread_) { |
||||
bgthread_.reset( |
||||
new boost::thread(boost::bind(&PosixEnv::BGThreadWrapper, this))); |
||||
} |
||||
|
||||
// Add to priority queue
|
||||
queue_.push_back(BGItem()); |
||||
queue_.back().function = function; |
||||
queue_.back().arg = arg; |
||||
|
||||
lock.unlock(); |
||||
|
||||
bgsignal_.notify_one(); |
||||
|
||||
} |
||||
|
||||
void PosixEnv::BGThread() { |
||||
while (true) { |
||||
// Wait until there is an item that is ready to run
|
||||
boost::unique_lock<boost::mutex> lock(mu_); |
||||
|
||||
while (queue_.empty()) { |
||||
bgsignal_.wait(lock); |
||||
} |
||||
|
||||
void (*function)(void*) = queue_.front().function; |
||||
void* arg = queue_.front().arg; |
||||
queue_.pop_front(); |
||||
|
||||
lock.unlock(); |
||||
(*function)(arg); |
||||
} |
||||
} |
||||
|
||||
namespace { |
||||
struct StartThreadState { |
||||
void (*user_function)(void*); |
||||
void* arg; |
||||
}; |
||||
} |
||||
|
||||
static void* StartThreadWrapper(void* arg) { |
||||
StartThreadState* state = reinterpret_cast<StartThreadState*>(arg); |
||||
state->user_function(state->arg); |
||||
delete state; |
||||
return NULL; |
||||
} |
||||
|
||||
void PosixEnv::StartThread(void (*function)(void* arg), void* arg) { |
||||
StartThreadState* state = new StartThreadState; |
||||
state->user_function = function; |
||||
state->arg = arg; |
||||
|
||||
boost::thread t(boost::bind(&StartThreadWrapper, state)); |
||||
} |
||||
|
||||
} |
||||
|
||||
static boost::once_flag once = BOOST_ONCE_INIT; |
||||
static Env* default_env; |
||||
static void InitDefaultEnv() { |
||||
::memset(global_read_only_buf, 0, sizeof(global_read_only_buf)); |
||||
default_env = new PosixEnv; |
||||
} |
||||
|
||||
Env* Env::Default() { |
||||
boost::call_once(once, InitDefaultEnv); |
||||
|
||||
return default_env; |
||||
} |
||||
|
||||
} |
||||
@ -1,96 +0,0 @@
@@ -1,96 +0,0 @@
|
||||
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
||||
|
||||
#include "util/win_logger.h" |
||||
|
||||
#include <windows.h> |
||||
|
||||
namespace leveldb { |
||||
|
||||
void WinLogger::Logv(const char* format, va_list ap) { |
||||
const uint64_t thread_id = static_cast<uint64_t>(::GetCurrentThreadId()); |
||||
|
||||
// We try twice: the first time with a fixed-size stack allocated buffer,
|
||||
// and the second time with a much larger dynamically allocated buffer.
|
||||
char buffer[500]; |
||||
|
||||
for (int iter = 0; iter < 2; iter++) { |
||||
char* base; |
||||
int bufsize; |
||||
if (iter == 0) { |
||||
bufsize = sizeof(buffer); |
||||
base = buffer; |
||||
} else { |
||||
bufsize = 30000; |
||||
base = new char[bufsize]; |
||||
} |
||||
|
||||
char* p = base; |
||||
char* limit = base + bufsize; |
||||
|
||||
SYSTEMTIME st; |
||||
|
||||
// GetSystemTime returns UTC time, we want local time!
|
||||
::GetLocalTime(&st); |
||||
|
||||
#ifdef _MSC_VER |
||||
p += _snprintf_s(p, limit - p, _TRUNCATE, |
||||
"%04d/%02d/%02d-%02d:%02d:%02d.%03d %llx ", |
||||
st.wYear, |
||||
st.wMonth, |
||||
st.wDay, |
||||
st.wHour, |
||||
st.wMinute, |
||||
st.wSecond, |
||||
st.wMilliseconds, |
||||
static_cast<long long unsigned int>(thread_id)); |
||||
#else |
||||
#ifdef __MINGW32__ |
||||
p += snprintf(p, limit - p, |
||||
"%04d/%02d/%02d-%02d:%02d:%02d.%03d %llx ", |
||||
st.wYear, |
||||
st.wMonth, |
||||
st.wDay, |
||||
st.wHour, |
||||
st.wMinute, |
||||
st.wSecond, |
||||
st.wMilliseconds, |
||||
static_cast<long long unsigned int>(thread_id)); |
||||
#else |
||||
#error Unable to detect Windows compiler (neither _MSC_VER nor __MINGW32__ are set) |
||||
#endif |
||||
#endif |
||||
|
||||
// Print the message
|
||||
if (p < limit) { |
||||
va_list backup_ap = ap; |
||||
p += vsnprintf(p, limit - p, format, backup_ap); |
||||
va_end(backup_ap); |
||||
} |
||||
|
||||
// Truncate to available space if necessary
|
||||
if (p >= limit) { |
||||
if (iter == 0) { |
||||
continue; // Try again with larger buffer
|
||||
} else { |
||||
p = limit - 1; |
||||
} |
||||
} |
||||
|
||||
// Add newline if necessary
|
||||
if (p == base || p[-1] != '\n') { |
||||
*p++ = '\n'; |
||||
} |
||||
|
||||
assert(p <= limit); |
||||
fwrite(base, 1, p - base, file_); |
||||
fflush(file_); |
||||
if (base != buffer) { |
||||
delete[] base; |
||||
} |
||||
break; |
||||
} |
||||
} |
||||
|
||||
} |
||||
@ -1,28 +0,0 @@
@@ -1,28 +0,0 @@
|
||||
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
||||
|
||||
// Logger implementation for Windows
|
||||
|
||||
#ifndef STORAGE_LEVELDB_UTIL_WIN_LOGGER_H_ |
||||
#define STORAGE_LEVELDB_UTIL_WIN_LOGGER_H_ |
||||
|
||||
#include <stdio.h> |
||||
#include "leveldb/env.h" |
||||
|
||||
namespace leveldb { |
||||
|
||||
class WinLogger : public Logger { |
||||
private: |
||||
FILE* file_; |
||||
public: |
||||
explicit WinLogger(FILE* f) : file_(f) { assert(file_); } |
||||
virtual ~WinLogger() { |
||||
fclose(file_); |
||||
} |
||||
virtual void Logv(const char* format, va_list ap); |
||||
|
||||
}; |
||||
|
||||
} |
||||
#endif // STORAGE_LEVELDB_UTIL_WIN_LOGGER_H_
|
||||
Loading…
Reference in new issue