1 files changed, 0 insertions, 591 deletions
diff --git a/src/leveldb/util/env_boost.cc b/src/leveldb/util/env_boost.cc
deleted file mode 100644
index 055c657438..0000000000
--- a/src/leveldb/util/env_boost.cc
+++ /dev/null
@@ -1,591 +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 <deque>
-
-#ifdef LEVELDB_PLATFORM_WINDOWS
-#include <windows.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-#include <io.h>
-#else
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <time.h>
-#include <unistd.h>
-#endif
-#if defined(LEVELDB_PLATFORM_ANDROID)
-#include <sys/stat.h>
-#endif
-#include "leveldb/env.h"
-#include "leveldb/slice.h"
-
-#ifdef LEVELDB_PLATFORM_WINDOWS
-#include "util/win_logger.h"
-#else
-#include "util/posix_logger.h"
-#endif
-#include "port/port.h"
-#include "util/logging.h"
-
-#ifdef __linux
-#include <sys/sysinfo.h>
-#include <linux/unistd.h>
-#endif
-
-#include <fstream>
-
-// Boost includes - see WINDOWS file to see which modules to install
-#include <boost/date_time/gregorian/gregorian.hpp>
-#include <boost/date_time/posix_time/posix_time.hpp>
-#include <boost/filesystem/convenience.hpp>
-#include <boost/thread/once.hpp>
-#include <boost/thread/thread.hpp>
-#include <boost/bind.hpp>
-#include <boost/scoped_ptr.hpp>
-#include <boost/interprocess/sync/file_lock.hpp>
-#include <boost/thread/condition_variable.hpp>
-
-namespace leveldb {
-namespace {
-
-// returns the ID of the current process
-static boost::uint32_t current_process_id(void) {
-#ifdef _WIN32
-  return static_cast<boost::uint32_t>(::GetCurrentProcessId());
-#else
-  return static_cast<boost::uint32_t>(::getpid());
-#endif
-}
-
-// returns the ID of the current thread
-static boost::uint32_t current_thread_id(void) {
-#ifdef _WIN32
-  return static_cast<boost::uint32_t>(::GetCurrentThreadId());
-#else
-#ifdef __linux
-  return static_cast<boost::uint32_t>(::syscall(__NR_gettid));
-#else
-  // just return the pid
-  return current_process_id();
-#endif
-#endif
-}
-
-static char global_read_only_buf[0x8000];
-
-class PosixSequentialFile: public SequentialFile {
- private:
-  std::string filename_;
-  FILE* file_;
-
- public:
-  PosixSequentialFile(const std::string& fname, FILE* f)
-    : filename_(fname), file_(f) { }
-  virtual ~PosixSequentialFile() { fclose(file_); }
-
-  virtual Status Read(size_t n, Slice* result, char* scratch) {
-  Status s;
-#if defined(BSD) || defined(__MINGW32__)
-  // fread_unlocked doesn't exist on FreeBSD or MingW
-  size_t r = fread(scratch, 1, n, file_);
-#else
-  size_t r = fread_unlocked(scratch, 1, n, file_);
-#endif
-  *result = Slice(scratch, r);
-  if (r < n) {
-    if (feof(file_)) {
-    // We leave status as ok if we hit the end of the file
-    } else {
-    // A partial read with an error: return a non-ok status
-    s = Status::IOError(filename_, strerror(errno));
-    }
-  }
-  return s;
-  }
-
-  virtual Status Skip(uint64_t n) {
-  if (fseek(file_, n, SEEK_CUR)) {
-    return Status::IOError(filename_, strerror(errno));
-  }
-  return Status::OK();
-  }
-};
-
-class PosixRandomAccessFile: public RandomAccessFile {
- private:
-  std::string filename_;
-  int fd_;
-  mutable boost::mutex mu_;
-
- public:
-  PosixRandomAccessFile(const std::string& fname, int fd)
-    : filename_(fname), fd_(fd) { }
-  virtual ~PosixRandomAccessFile() { close(fd_); }
-
-  virtual Status Read(uint64_t offset, size_t n, Slice* result,
-            char* scratch) const {
-    Status s;
-#ifdef LEVELDB_PLATFORM_WINDOWS
-    // no pread on Windows so we emulate it with a mutex
-    boost::unique_lock<boost::mutex> lock(mu_);
-
-    if (::_lseeki64(fd_, offset, SEEK_SET) == -1L) {
-      return Status::IOError(filename_, strerror(errno));
-    }
-
-    int r = ::_read(fd_, scratch, n);
-    *result = Slice(scratch, (r < 0) ? 0 : r);
-    lock.unlock();
-#else
-    ssize_t r = pread(fd_, scratch, n, static_cast<off_t>(offset));
-    *result = Slice(scratch, (r < 0) ? 0 : r);
-#endif
-    if (r < 0) {
-      // An error: return a non-ok status
-      s = Status::IOError(filename_, strerror(errno));
-    }
-    return s;
-  }
-};
-
-// 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.
-
-class BoostFile : public WritableFile {
-
-public:
-  explicit BoostFile(std::string path) : path_(path), written_(0) {
-    Open();
-  }
-
-  virtual ~BoostFile() {
-    Close();
-  }
-
-private:
-  void Open() {
-    // we truncate the file as implemented in env_posix
-     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;
-}
-
-}