gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gold / descriptors.h

diff --git a/gold/descriptors.h b/gold/descriptors.h
index 6a6ab61be0d655ff31d41b8cf0a839957a2148f9..f1c2ad701b584ae241c7f07b0b6209bc07188b39 100644 (file)
--- a/gold/descriptors.h
+++ b/gold/descriptors.h
@@ -1,6 +1,6 @@
 // descriptors.h -- manage file descriptors for gold   -*- C++ -*-
 
-// Copyright 2008 Free Software Foundation, Inc.
+// Copyright (C) 2008-2020 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -25,11 +25,11 @@
 
 #include <vector>
 
+#include "gold-threads.h"
+
 namespace gold
 {
 
-class Lock;
-
 // This class manages file descriptors for gold.
 
 class Descriptors
@@ -56,6 +56,10 @@ class Descriptors
   void
   release(int descriptor, bool permanent);
 
+  // Close all the descriptors open for reading.
+  void
+  close_all();
+
  private:
   // Information kept for a descriptor.
   struct Open_descriptor
@@ -69,6 +73,8 @@ class Descriptors
     bool inuse;
     // Whether this is a write descriptor.
     bool is_write;
+    // Whether the descriptor is on the stack.
+    bool is_on_stack;
   };
 
   bool
@@ -76,6 +82,8 @@ class Descriptors
 
   // We need to lock before accessing any fields.
   Lock* lock_;
+  // Used to initialize the lock_ field exactly once.
+  Initialize_lock initialize_lock_;
   // Information for descriptors.
   std::vector<Open_descriptor> open_descriptors_;
   // Top of stack.
@@ -100,6 +108,10 @@ inline void
 release_descriptor(int descriptor, bool permanent)
 { descriptors.release(descriptor, permanent); }
 
+inline void
+close_all_descriptors()
+{ descriptors.close_all(); }
+
 } // End namespace gold.
 
 #endif // !defined(GOLD_DESCRIPTORS_H)