From 44453f85d94b039d2c66cdd19a49adc2d35f6cda Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@airs.com>
Date: Tue, 1 Sep 2009 17:32:35 +0000
Subject: 	* gold.cc: Include "incremental.h". 	(queue_initial_tasks):
 Call Incremental_checker methods. 	* incremental.cc: Include "output.h". 
 (Incremental_checker::can_incrementally_link_output_file): New 
 method. 	* incremental.h (Incremental_checker): New class.

---
 gold/incremental.h | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

(limited to 'gold/incremental.h')

diff --git a/gold/incremental.h b/gold/incremental.h
index 4342dcc..9650993 100644
--- a/gold/incremental.h
+++ b/gold/incremental.h
@@ -50,6 +50,24 @@ enum Incremental_input_type
   INCREMENTAL_INPUT_SCRIPT = 4
 };
 
+// Code invoked early during an incremental link that checks what files need
+// to be relinked.
+class Incremental_checker
+{
+ public:
+  Incremental_checker(const char* output_name)
+    : output_name_(output_name)
+  { }
+
+  // Analyzes the output file to check if incremental linking is possible and
+  // what files needs to be relinked.
+  bool
+  can_incrementally_link_output_file();
+
+ private:
+  const char* output_name_;
+};
+
 // This class contains the information needed during an incremental
 // build about the inputs necessary to build the .gnu_incremental_inputs.
 class Incremental_inputs
@@ -127,11 +145,11 @@ class Incremental_inputs
     {
       // Present if type == INCREMENTAL_INPUT_ARCHIVE.
       Archive* archive;
-  
+
       // Present if type == INCREMENTAL_INPUT_OBJECT or
       // INCREMENTAL_INPUT_SHARED_LIBRARY.
       Object* object;
-  
+
       // Present if type == INCREMENTAL_INPUT_SCRIPT.
       Script_info* script;
     };
@@ -141,7 +159,7 @@ class Incremental_inputs
 
     // Position of the entry information in the output section.
     unsigned int index;
-    
+
     // Last modification time of the file.
     Timespec mtime;
   };
@@ -151,7 +169,7 @@ class Incremental_inputs
   // A lock guarding access to inputs_ during the first phase of linking, when
   // report_ function may be called from multiple threads.
   Lock* lock_;
-  
+
   // The list of input arguments obtained from parsing the command line.
   const Input_arguments* inputs_;
 
-- 
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