From d5bd6c772beac298b578cdf061fac00334e1f126 Mon Sep 17 00:00:00 2001
From: Igor Canadi <icanadi@fb.com>
Date: Thu, 28 Aug 2014 12:46:05 -0400
Subject: [PATCH] Fix ios compile

Summary: No __thread for ios.

Test Plan: compile works for ios now

Reviewers: ljin, dhruba

Reviewed By: dhruba

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D22491
---
 db/db_impl.cc                     |  2 +-
 db/db_impl_readonly.h             |  4 ++++
 include/rocksdb/iostats_context.h |  2 ++
 util/iostats_context.cc           |  2 ++
 util/iostats_context_imp.h        | 14 ++++++++++++++
 5 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/db/db_impl.cc b/db/db_impl.cc
index a123467ae..988c1acf7 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -1979,7 +1979,7 @@ void DBImpl::MaybeScheduleFlushOrCompaction() {
 }
 
 void DBImpl::RecordFlushIOStats() {
-  RecordTick(stats_, FLUSH_WRITE_BYTES, iostats_context.bytes_written);
+  RecordTick(stats_, FLUSH_WRITE_BYTES, IOSTATS(bytes_written));
   IOSTATS_RESET(bytes_written);
 }
 
diff --git a/db/db_impl_readonly.h b/db/db_impl_readonly.h
index 47c8ab33d..1dfdf422e 100644
--- a/db/db_impl_readonly.h
+++ b/db/db_impl_readonly.h
@@ -74,6 +74,8 @@ class DBImplReadOnly : public DBImpl {
                               uint32_t target_path_id = 0) override {
     return Status::NotSupported("Not supported operation in read only mode.");
   }
+
+#ifndef ROCKSDB_LITE
   virtual Status DisableFileDeletions() override {
     return Status::NotSupported("Not supported operation in read only mode.");
   }
@@ -85,6 +87,8 @@ class DBImplReadOnly : public DBImpl {
                               bool flush_memtable = true) override {
     return Status::NotSupported("Not supported operation in read only mode.");
   }
+#endif  // ROCKSDB_LITE
+
   using DBImpl::Flush;
   virtual Status Flush(const FlushOptions& options,
                        ColumnFamilyHandle* column_family) override {
diff --git a/include/rocksdb/iostats_context.h b/include/rocksdb/iostats_context.h
index 0a220b53a..e06ee1773 100644
--- a/include/rocksdb/iostats_context.h
+++ b/include/rocksdb/iostats_context.h
@@ -27,7 +27,9 @@ struct IOStatsContext {
   uint64_t bytes_read;
 };
 
+#ifndef IOS_CROSS_COMPILE
 extern __thread IOStatsContext iostats_context;
+#endif  // IOS_CROSS_COMPILE
 
 }  // namespace rocksdb
 
diff --git a/util/iostats_context.cc b/util/iostats_context.cc
index 610831779..090813abc 100644
--- a/util/iostats_context.cc
+++ b/util/iostats_context.cc
@@ -9,7 +9,9 @@
 
 namespace rocksdb {
 
+#ifndef IOS_CROSS_COMPILE
 __thread IOStatsContext iostats_context;
+#endif  // IOS_CROSS_COMPILE
 
 void IOStatsContext::Reset() {
   thread_pool_id = Env::Priority::TOTAL;
diff --git a/util/iostats_context_imp.h b/util/iostats_context_imp.h
index ed34037d3..b271ddf14 100644
--- a/util/iostats_context_imp.h
+++ b/util/iostats_context_imp.h
@@ -6,6 +6,8 @@
 #pragma once
 #include "rocksdb/iostats_context.h"
 
+#ifndef IOS_CROSS_COMPILE
+
 // increment a specific counter by the specified value
 #define IOSTATS_ADD(metric, value)     \
   (iostats_context.metric += value)
@@ -30,3 +32,15 @@
 
 #define IOSTATS(metric)                        \
   (iostats_context.metric)
+
+#else  // IOS_CROSS_COMPILE
+
+#define IOSTATS_ADD(metric, value)
+#define IOSTATS_ADD_IF_POSITIVE(metric, value)
+#define IOSTATS_RESET(metric)
+#define IOSTATS_RESET_ALL()
+#define IOSTATS_SET_THREAD_POOL_ID(value)
+#define IOSTATS_THREAD_POOL_ID()
+#define IOSTATS(metric) 0
+
+#endif  // IOS_CROSS_COMPILE