remove dependency on options.h for port_posix.h andport_win.h (#11214)

Summary:
The files in `port/`, such as `port_posix.h`, are layering over the system libraries, so shouldn't include the DB-specific files like `options.h`. This PR remove this dependency.

# How
The reason that `port_posix.h` (or `port_win.h`) include `options.h` is to use `CpuPriority`, as there is a method `SetCpuPriority()` in `port_posix.h` that uses `CpuPriority.`
- I think `SetCpuPriority()` make sense to exist in `port_posix.h` as it provides has platform-dependent implementation
- `CpuPriority` enum is defined in `env.h`, but used in `rocksdb/include` and `port/`.

Hence, let us define `CpuPriority` enum in a common file, say `port_defs.h`, such that both directories `rocksdb/include` and `port/` can include.

When we remove this dependency, some other files have compile errors because they can't find definitions, so add header files to resolve

# Test
make all check -j

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11214

Reviewed By: pdillinger

Differential Revision: D43196910

Pulled By: guowentian

fbshipit-source-id: 70deccb72844cfb08fcc994f76c6ef6df5d55ab9

cache/clock_cache.cc

@@ -9,7 +9,6 @@
 
 #include "cache/clock_cache.h"
 
-#include <cassert>
 #include <functional>
 #include <numeric>
 
@@ -18,6 +17,7 @@
 #include "monitoring/perf_context_imp.h"
 #include "monitoring/statistics.h"
 #include "port/lang.h"
+#include "rocksdb/env.h"
 #include "util/hash.h"
 #include "util/math.h"
 #include "util/random.h"

include/rocksdb/env.h

@@ -27,6 +27,7 @@
 
 #include "rocksdb/customizable.h"
 #include "rocksdb/functor_wrapper.h"
+#include "rocksdb/port_defs.h"
 #include "rocksdb/status.h"
 #include "rocksdb/thread_status.h"
 
@@ -69,13 +70,6 @@ struct ConfigOptions;
 
 const size_t kDefaultPageSize = 4 * 1024;
 
-enum class CpuPriority {
-  kIdle = 0,
-  kLow = 1,
-  kNormal = 2,
-  kHigh = 3,
-};
-
 // Options while opening a file to read/write
 struct EnvOptions {
   // Construct with default Options

include/rocksdb/port_defs.h

@@ -0,0 +1,22 @@
+//  Copyright (c) Meta Platforms, Inc. and affiliates.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+//
+// This file includes the common definitions used in the port/,
+// the public API (this directory), and other directories
+
+#pragma once
+
+#include "rocksdb/rocksdb_namespace.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+enum class CpuPriority {
+  kIdle = 0,
+  kLow = 1,
+  kNormal = 2,
+  kHigh = 3,
+};
+
+}  // namespace ROCKSDB_NAMESPACE

port/port_posix.h

@@ -13,7 +13,7 @@
 
 #include <thread>
 
-#include "rocksdb/options.h"
+#include "rocksdb/port_defs.h"
 #include "rocksdb/rocksdb_namespace.h"
 
 // size_t printf formatting named in the manner of C99 standard formatting

port/win/port_win.h

@@ -17,21 +17,22 @@
 #endif
 
 #include <windows.h>
-#include <string>
+//^^ <windows.h> should be included first before other system lib
-#include <thread>
-#include <string.h>
-#include <mutex>
-#include <limits>
-#include <condition_variable>
-#include <malloc.h>
 #include <intrin.h>
+#include <malloc.h>
 #include <process.h>
-
 #include <stdint.h>
+#include <string.h>
 
-#include "port/win/win_thread.h"
+#include <cassert>
+#include <condition_variable>
+#include <limits>
+#include <mutex>
+#include <string>
+#include <thread>
 
-#include "rocksdb/options.h"
+#include "port/win/win_thread.h"
+#include "rocksdb/port_defs.h"
 
 #undef min
 #undef max

table/multiget_context.h

@@ -12,6 +12,7 @@
 #include "db/lookup_key.h"
 #include "db/merge_context.h"
 #include "rocksdb/env.h"
+#include "rocksdb/options.h"
 #include "rocksdb/statistics.h"
 #include "rocksdb/types.h"
 #include "util/async_file_reader.h"

util/aligned_buffer.h

@@ -9,6 +9,7 @@
 #pragma once
 
 #include <algorithm>
+#include <cassert>
 
 #include "port/port.h"
 

util/core_local.h

@@ -5,6 +5,7 @@
 
 #pragma once
 
+#include <cassert>
 #include <cstddef>
 #include <thread>
 #include <utility>

util/distributed_mutex.h

@@ -36,6 +36,8 @@ using DMutexLock = std::lock_guard<folly::DistributedMutex>;
 
 #else
 
+#include <mutex>
+
 #include "port/port.h"
 
 namespace ROCKSDB_NAMESPACE {

util/file_checksum_helper.h

@@ -8,6 +8,7 @@
 #include <unordered_map>
 
 #include "port/port.h"
+#include "rocksdb/env.h"
 #include "rocksdb/file_checksum.h"
 #include "rocksdb/status.h"
 #include "util/coding.h"

util/mutexlock.h

@@ -11,6 +11,7 @@
 #include <assert.h>
 
 #include <atomic>
+#include <functional>
 #include <mutex>
 #include <thread>
 

util/random.cc

@@ -6,6 +6,7 @@
 
 #include "util/random.h"
 
+#include <limits.h>
 #include <stdint.h>
 #include <string.h>