[NaCl SDK] Upate atomic ops in nacl_io

native_client_sdk/src/libraries/nacl_io/inode_pool.h

Index: native_client_sdk/src/libraries/nacl_io/inode_pool.h
diff --git a/native_client_sdk/src/libraries/nacl_io/inode_pool.h b/native_client_sdk/src/libraries/nacl_io/inode_pool.h
index 4c3f44b36eeb62726d675b61bec7a40dd6f90b5e..57bb0f86dc2c2fa221c538d02e8e1f85bf32dbc5 100644
--- a/native_client_sdk/src/libraries/nacl_io/inode_pool.h
+++ b/native_client_sdk/src/libraries/nacl_io/inode_pool.h
@@ -16,17 +16,10 @@
 
 class INodePool {
  public:
-  INodePool()
-    : max_nodes_(0),
-      num_nodes_(0) {
-    pthread_mutex_init(&lock_, NULL);
-  }
-  ~INodePool() {
-    pthread_mutex_destroy(&lock_);
-  }
+  INodePool() : max_nodes_(0), num_nodes_(0) {}
 
   ino_t Acquire() {
-    AutoLock lock(&lock_);
+    AUTO_LOCK(lock_);
     const int INO_CNT = 8;
 
     // If we run out of INO numbers, then allocate 8 more
@@ -47,7 +40,7 @@ class INodePool {
   }
 
   void Release(ino_t ino) {
-    AutoLock lock(&lock_);
+    AUTO_LOCK(lock_);
     inos_.push_back(ino);
     num_nodes_--;
   }
@@ -59,7 +52,7 @@ class INodePool {
   size_t num_nodes_;
   size_t max_nodes_;
   std::vector<ino_t> inos_;
-  pthread_mutex_t lock_;
+  SimpleLock lock_;
 };
 
 #endif  // LIBRARIES_NACL_IO_INODE_POOL_H_