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-rwxr-xr-x[-rw-r--r--]src/leveldb/Makefile46
-rwxr-xr-xsrc/leveldb/build_detect_platform33
-rw-r--r--src/leveldb/port/port.h2
-rw-r--r--src/leveldb/port/port_win.cc182
-rw-r--r--src/leveldb/port/port_win.h161
-rw-r--r--src/leveldb/util/env_boost.cc591
-rw-r--r--src/leveldb/util/win_logger.cc96
-rw-r--r--src/leveldb/util/win_logger.h28
8 files changed, 1106 insertions, 33 deletions
diff --git a/src/leveldb/Makefile b/src/leveldb/Makefile
index c648a285ea..7f658cfdf9 100644..100755
--- a/src/leveldb/Makefile
+++ b/src/leveldb/Makefile
@@ -82,7 +82,7 @@ $(SHARED2): $(SHARED3)
endif
$(SHARED3):
- $(CXX) $(LDFLAGS) $(PLATFORM_SHARED_LDFLAGS)$(SHARED2) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(SOURCES) -o $(SHARED3)
+ $(CXX) $(LDFLAGS) $(PLATFORM_SHARED_LDFLAGS)$(SHARED2) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(SOURCES) $(PLATFORM_EXTRALIBS) -o $(SHARED3)
endif # PLATFORM_SHARED_EXT
@@ -100,74 +100,74 @@ $(LIBRARY): $(LIBOBJECTS)
$(AR) -rs $@ $(LIBOBJECTS)
db_bench: db/db_bench.o $(LIBOBJECTS) $(TESTUTIL)
- $(CXX) db/db_bench.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS)
+ $(CXX) db/db_bench.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
db_bench_sqlite3: doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL)
- $(CXX) doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS) -lsqlite3
+ $(CXX) doc/bench/db_bench_sqlite3.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS) -lsqlite3
db_bench_tree_db: doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL)
- $(CXX) doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS) -lkyotocabinet
+ $(CXX) doc/bench/db_bench_tree_db.o $(LIBOBJECTS) $(TESTUTIL) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS) -lkyotocabinet
arena_test: util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
bloom_test: util/bloom_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) util/bloom_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) util/bloom_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
c_test: db/c_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/c_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/c_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
cache_test: util/cache_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) util/cache_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) util/cache_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
coding_test: util/coding_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) util/coding_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) util/coding_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
corruption_test: db/corruption_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/corruption_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/corruption_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
crc32c_test: util/crc32c_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) util/crc32c_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) util/crc32c_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
db_test: db/db_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/db_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/db_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
dbformat_test: db/dbformat_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/dbformat_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/dbformat_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
env_test: util/env_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) util/env_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) util/env_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
filename_test: db/filename_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/filename_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/filename_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
filter_block_test: table/filter_block_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) table/filter_block_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) table/filter_block_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
log_test: db/log_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/log_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/log_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
table_test: table/table_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) table/table_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) table/table_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
skiplist_test: db/skiplist_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/skiplist_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/skiplist_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
version_edit_test: db/version_edit_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/version_edit_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/version_edit_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
version_set_test: db/version_set_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/version_set_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/version_set_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
write_batch_test: db/write_batch_test.o $(LIBOBJECTS) $(TESTHARNESS)
- $(CXX) db/write_batch_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) db/write_batch_test.o $(LIBOBJECTS) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
$(MEMENVLIBRARY) : $(MEMENVOBJECTS)
rm -f $@
$(AR) -rs $@ $(MEMENVOBJECTS)
memenv_test : helpers/memenv/memenv_test.o $(MEMENVLIBRARY) $(LIBRARY) $(TESTHARNESS)
- $(CXX) helpers/memenv/memenv_test.o $(MEMENVLIBRARY) $(LIBRARY) $(TESTHARNESS) -o $@ $(LDFLAGS)
+ $(CXX) helpers/memenv/memenv_test.o $(MEMENVLIBRARY) $(LIBRARY) $(TESTHARNESS) -o $@ $(LDFLAGS) $(PLATFORM_EXTRALIBS)
ifeq ($(PLATFORM), IOS)
# For iOS, create universal object files to be used on both the simulator and
diff --git a/src/leveldb/build_detect_platform b/src/leveldb/build_detect_platform
index 959a7d6f59..5a8d723734 100755
--- a/src/leveldb/build_detect_platform
+++ b/src/leveldb/build_detect_platform
@@ -50,6 +50,8 @@ CROSS_COMPILE=
PLATFORM_CCFLAGS=
PLATFORM_CXXFLAGS=
PLATFORM_LDFLAGS=
+PLATFORM_EXTRALIBS=
+PLATFORM_SOURCES=
PLATFORM_SHARED_EXT="so"
PLATFORM_SHARED_LDFLAGS="-shared -Wl,-soname -Wl,"
PLATFORM_SHARED_CFLAGS="-fPIC"
@@ -62,49 +64,59 @@ case "$TARGET_OS" in
COMMON_FLAGS="-fno-builtin-memcmp -DOS_MACOSX"
PLATFORM_SHARED_EXT=dylib
PLATFORM_SHARED_LDFLAGS="-dynamiclib -install_name "
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
Linux)
PLATFORM=OS_LINUX
COMMON_FLAGS="-fno-builtin-memcmp -pthread -DOS_LINUX"
PLATFORM_LDFLAGS="-pthread"
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
SunOS)
PLATFORM=OS_SOLARIS
COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_SOLARIS"
PLATFORM_LDFLAGS="-lpthread -lrt"
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
FreeBSD)
PLATFORM=OS_FREEBSD
COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_FREEBSD"
PLATFORM_LDFLAGS="-lpthread"
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
NetBSD)
PLATFORM=OS_NETBSD
COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_NETBSD"
PLATFORM_LDFLAGS="-lpthread -lgcc_s"
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
OpenBSD)
PLATFORM=OS_OPENBSD
COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_OPENBSD"
PLATFORM_LDFLAGS="-pthread"
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
DragonFly)
PLATFORM=OS_DRAGONFLYBSD
COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_DRAGONFLYBSD"
PLATFORM_LDFLAGS="-lpthread"
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
;;
OS_ANDROID_CROSSCOMPILE)
PLATFORM=OS_ANDROID
COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_ANDROID -DLEVELDB_PLATFORM_POSIX"
PLATFORM_LDFLAGS="" # All pthread features are in the Android C library
- PORT_FILE=port/port_posix.cc
+ PLATFORM_SOURCES="port/port_posix.cc util/env_posix.cc"
+ CROSS_COMPILE=true
+ ;;
+ OS_WINDOWS_CROSSCOMPILE)
+ PLATFORM=OS_WINDOWS
+ COMMON_FLAGS="-fno-builtin-memcmp -D_REENTRANT -DOS_WINDOWS -DLEVELDB_PLATFORM_WINDOWS -DBOOST_THREAD_USE_LIB"
+ PLATFORM_CXXFLAGS="-std=c++0x"
+ PLATFORM_LDFLAGS=""
+ PLATFORM_SHARED_CFLAGS=""
+ PLATFORM_SOURCES="port/port_win.cc util/env_boost.cc util/win_logger.cc"
+ PLATFORM_EXTRALIBS="-lboost_system-mt-s -lboost_filesystem-mt-s -lboost_thread_win32-mt-s"
CROSS_COMPILE=true
;;
*)
@@ -120,12 +132,12 @@ DIRS="util db table"
set -f # temporarily disable globbing so that our patterns aren't expanded
PRUNE_TEST="-name *test*.cc -prune"
PRUNE_BENCH="-name *_bench.cc -prune"
-PORTABLE_FILES=`find $DIRS $PRUNE_TEST -o $PRUNE_BENCH -o -name '*.cc' -print | sort | tr "\n" " "`
+PORTABLE_FILES=`find $DIRS $PRUNE_TEST -o $PRUNE_BENCH -o -name '*.cc' -not -name 'env_*.cc' -not -name '*_logger.cc' -print | sort | tr "\n" " "`
set +f # re-enable globbing
# The sources consist of the portable files, plus the platform-specific port
# file.
-echo "SOURCES=$PORTABLE_FILES $PORT_FILE" >> $OUTPUT
+echo "SOURCES=$PORTABLE_FILES $PLATFORM_SOURCES" >> $OUTPUT
echo "MEMENV_SOURCES=helpers/memenv/memenv.cc" >> $OUTPUT
if [ "$CROSS_COMPILE" = "true" ]; then
@@ -173,6 +185,7 @@ echo "PLATFORM=$PLATFORM" >> $OUTPUT
echo "PLATFORM_LDFLAGS=$PLATFORM_LDFLAGS" >> $OUTPUT
echo "PLATFORM_CCFLAGS=$PLATFORM_CCFLAGS" >> $OUTPUT
echo "PLATFORM_CXXFLAGS=$PLATFORM_CXXFLAGS" >> $OUTPUT
+echo "PLATFORM_EXTRALIBS=$PLATFORM_EXTRALIBS" >> $OUTPUT
echo "PLATFORM_SHARED_CFLAGS=$PLATFORM_SHARED_CFLAGS" >> $OUTPUT
echo "PLATFORM_SHARED_EXT=$PLATFORM_SHARED_EXT" >> $OUTPUT
echo "PLATFORM_SHARED_LDFLAGS=$PLATFORM_SHARED_LDFLAGS" >> $OUTPUT
diff --git a/src/leveldb/port/port.h b/src/leveldb/port/port.h
index e667db40d0..4baafa8e22 100644
--- a/src/leveldb/port/port.h
+++ b/src/leveldb/port/port.h
@@ -14,6 +14,8 @@
# include "port/port_posix.h"
#elif defined(LEVELDB_PLATFORM_CHROMIUM)
# include "port/port_chromium.h"
+#elif defined(LEVELDB_PLATFORM_WINDOWS)
+# include "port/port_win.h"
#endif
#endif // STORAGE_LEVELDB_PORT_PORT_H_
diff --git a/src/leveldb/port/port_win.cc b/src/leveldb/port/port_win.cc
new file mode 100644
index 0000000000..4ca64acbef
--- /dev/null
+++ b/src/leveldb/port/port_win.cc
@@ -0,0 +1,182 @@
+// LevelDB 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.
+//
+// See port_example.h for documentation for the following types/functions.
+
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// * Neither the name of the University of California, Berkeley nor the
+// names of its contributors may be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+#include "port/port_win.h"
+
+#include <windows.h>
+#include <cassert>
+
+namespace leveldb {
+namespace port {
+
+Mutex::Mutex() :
+ mutex_(::CreateMutex(NULL, FALSE, NULL)) {
+ assert(mutex_);
+}
+
+Mutex::~Mutex() {
+ assert(mutex_);
+ ::CloseHandle(mutex_);
+}
+
+void Mutex::Lock() {
+ assert(mutex_);
+ ::WaitForSingleObject(mutex_, INFINITE);
+}
+
+void Mutex::Unlock() {
+ assert(mutex_);
+ ::ReleaseMutex(mutex_);
+}
+
+void Mutex::AssertHeld() {
+ assert(mutex_);
+ assert(1);
+}
+
+CondVar::CondVar(Mutex* mu) :
+ waiting_(0),
+ mu_(mu),
+ sema_(::CreateSemaphore(NULL, 0, 0x7fffffff, NULL)),
+ event_(::CreateEvent(NULL, FALSE, FALSE, NULL)),
+ broadcasted_(false){
+ assert(mu_);
+}
+
+CondVar::~CondVar() {
+ ::CloseHandle(sema_);
+ ::CloseHandle(event_);
+}
+
+void CondVar::Wait() {
+ wait_mtx_.Lock();
+ ++waiting_;
+ assert(waiting_ > 0);
+ wait_mtx_.Unlock();
+
+ ::SignalObjectAndWait(mu_->mutex_, sema_, INFINITE, FALSE);
+
+ wait_mtx_.Lock();
+ bool last = broadcasted_ && (--waiting_ == 0);
+ assert(waiting_ >= 0);
+ wait_mtx_.Unlock();
+
+ // we leave this function with the mutex held
+ if (last)
+ {
+ ::SignalObjectAndWait(event_, mu_->mutex_, INFINITE, FALSE);
+ }
+ else
+ {
+ ::WaitForSingleObject(mu_->mutex_, INFINITE);
+ }
+}
+
+void CondVar::Signal() {
+ wait_mtx_.Lock();
+ bool waiters = waiting_ > 0;
+ wait_mtx_.Unlock();
+
+ if (waiters)
+ {
+ ::ReleaseSemaphore(sema_, 1, 0);
+ }
+}
+
+void CondVar::SignalAll() {
+ wait_mtx_.Lock();
+
+ broadcasted_ = (waiting_ > 0);
+
+ if (broadcasted_)
+ {
+ // release all
+ ::ReleaseSemaphore(sema_, waiting_, 0);
+ wait_mtx_.Unlock();
+ ::WaitForSingleObject(event_, INFINITE);
+ broadcasted_ = false;
+ }
+ else
+ {
+ wait_mtx_.Unlock();
+ }
+}
+
+AtomicPointer::AtomicPointer(void* v) {
+ Release_Store(v);
+}
+
+void* AtomicPointer::Acquire_Load() const {
+ void * p = nullptr;
+ InterlockedExchangePointer(&p, rep_);
+ return p;
+}
+
+void AtomicPointer::Release_Store(void* v) {
+ InterlockedExchangePointer(&rep_, v);
+}
+
+void* AtomicPointer::NoBarrier_Load() const {
+ return rep_;
+}
+
+void AtomicPointer::NoBarrier_Store(void* v) {
+ rep_ = v;
+}
+
+enum InitializationState
+{
+ Uninitialized = 0,
+ Running = 1,
+ Initialized = 2
+};
+
+void InitOnce(OnceType* once, void (*initializer)()) {
+
+ static_assert(Uninitialized == LEVELDB_ONCE_INIT, "Invalid uninitialized state value");
+
+ InitializationState state = static_cast<InitializationState>(InterlockedCompareExchange(once, Running, Uninitialized));
+
+ if (state == Uninitialized) {
+ initializer();
+ *once = Initialized;
+ }
+
+ if (state == Running) {
+ while(*once != Initialized) {
+ Sleep(0); // yield
+ }
+ }
+
+ assert(*once == Initialized);
+}
+
+}
+}
diff --git a/src/leveldb/port/port_win.h b/src/leveldb/port/port_win.h
new file mode 100644
index 0000000000..b53d6ef70d
--- /dev/null
+++ b/src/leveldb/port/port_win.h
@@ -0,0 +1,161 @@
+// LevelDB 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.
+//
+// See port_example.h for documentation for the following types/functions.
+
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// * Neither the name of the University of California, Berkeley nor the
+// names of its contributors may be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+#ifndef STORAGE_LEVELDB_PORT_PORT_WIN_H_
+#define STORAGE_LEVELDB_PORT_PORT_WIN_H_
+
+#ifdef _MSC_VER
+#define snprintf _snprintf
+#define close _close
+#define fread_unlocked _fread_nolock
+#endif
+
+
+#ifdef SNAPPY
+#include <snappy/snappy.h>
+#endif
+
+#include <string>
+
+#include <stdint.h>
+
+namespace leveldb {
+namespace port {
+
+// Windows is little endian (for now :p)
+static const bool kLittleEndian = true;
+
+class CondVar;
+
+class Mutex {
+ public:
+ Mutex();
+ ~Mutex();
+
+ void Lock();
+ void Unlock();
+ void AssertHeld();
+
+ private:
+ friend class CondVar;
+ // critical sections are more efficient than mutexes
+ // but they are not recursive and can only be used to synchronize threads within the same process
+ // additionnaly they cannot be used with SignalObjectAndWait that we use for CondVar
+ // we use opaque void * to avoid including windows.h in port_win.h
+ void * mutex_;
+
+ // No copying
+ Mutex(const Mutex&);
+ void operator=(const Mutex&);
+};
+
+// the Win32 API offers a dependable condition variable mechanism, but only starting with
+// Windows 2008 and Vista
+// no matter what we will implement our own condition variable with a semaphore
+// implementation as described in a paper written by Douglas C. Schmidt and Irfan Pyarali
+class CondVar {
+ public:
+ explicit CondVar(Mutex* mu);
+ ~CondVar();
+ void Wait();
+ void Signal();
+ void SignalAll();
+ private:
+ Mutex* mu_;
+
+ Mutex wait_mtx_;
+ long waiting_;
+
+ void * sema_;
+ void * event_;
+
+ bool broadcasted_;
+};
+
+// Storage for a lock-free pointer
+class AtomicPointer {
+ private:
+ void * rep_;
+ public:
+ AtomicPointer() : rep_(nullptr) { }
+ explicit AtomicPointer(void* v);
+ void* Acquire_Load() const;
+
+ void Release_Store(void* v);
+
+ void* NoBarrier_Load() const;
+
+ void NoBarrier_Store(void* v);
+};
+
+typedef volatile long OnceType;
+#define LEVELDB_ONCE_INIT (0)
+
+extern void InitOnce(OnceType* once, void (*initializer)());
+
+inline bool Snappy_Compress(const char* input, size_t length,
+ ::std::string* output) {
+#ifdef SNAPPY
+ output->resize(snappy::MaxCompressedLength(length));
+ size_t outlen;
+ snappy::RawCompress(input, length, &(*output)[0], &outlen);
+ output->resize(outlen);
+ return true;
+#endif
+
+ return false;
+}
+
+inline bool Snappy_GetUncompressedLength(const char* input, size_t length,
+ size_t* result) {
+#ifdef SNAPPY
+ return snappy::GetUncompressedLength(input, length, result);
+#else
+ return false;
+#endif
+}
+
+inline bool Snappy_Uncompress(const char* input, size_t length,
+ char* output) {
+#ifdef SNAPPY
+ return snappy::RawUncompress(input, length, output);
+#else
+ return false;
+#endif
+}
+
+inline bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg) {
+ return false;
+}
+
+}
+}
+
+#endif // STORAGE_LEVELDB_PORT_PORT_WIN_H_
diff --git a/src/leveldb/util/env_boost.cc b/src/leveldb/util/env_boost.cc
new file mode 100644
index 0000000000..0190f9fb77
--- /dev/null
+++ b/src/leveldb/util/env_boost.cc
@@ -0,0 +1,591 @@
+// 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();
+ my_lock->fl_ = std::move(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;
+}
+
+}
diff --git a/src/leveldb/util/win_logger.cc b/src/leveldb/util/win_logger.cc
new file mode 100644
index 0000000000..834c98cc76
--- /dev/null
+++ b/src/leveldb/util/win_logger.cc
@@ -0,0 +1,96 @@
+// 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;
+ }
+}
+
+} \ No newline at end of file
diff --git a/src/leveldb/util/win_logger.h b/src/leveldb/util/win_logger.h
new file mode 100644
index 0000000000..b155d5c319
--- /dev/null
+++ b/src/leveldb/util/win_logger.h
@@ -0,0 +1,28 @@
+// 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_