1 files changed, 89 insertions, 0 deletions
diff --git a/dwarfdump2/srcfilesholder.h b/dwarfdump2/srcfilesholder.h
new file mode 100644
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+++ b/dwarfdump2/srcfilesholder.h
@@ -0,0 +1,89 @@
+/* 
+   Copyright (C) 2009-2011 David Anderson  All Rights Reserved.  
+  
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of version 2 of the GNU General Public License as
+   published by the Free Software Foundation.
+  
+   This program is distributed in the hope that it would be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  
+   Further, this software is distributed without any warranty that it is
+   free of the rightful claim of any third person regarding infringement
+   or the like.  Any license provided herein, whether implied or
+   otherwise, applies only to this software file.  Patent licenses, if
+   any, provided herein do not apply to combinations of this program with
+   other software, or any other product whatsoever.
+  
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write the Free Software Foundation, Inc., 51
+   Franklin Street - Fifth Floor, Boston MA 02110-1301, USA.
+  
+   Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
+   Mountain View, CA 94043, or:
+  
+   http://www.sgi.com
+  
+   For further information regarding this notice, see:
+  
+   http://oss.sgi.com/projects/GenInfo/NoticeExplan
+  
+  
+*/
+
+#ifndef  SRCFILESHOLDER_H
+#define SRCFILESHOLDER_H
+// Reference counting eliminates confusion and bugs
+// when deciding when to do dealloc.
+// It might be nice to store a vector of string here and
+// dealloc the dwarf data on construction.
+// But for now  we store the libdwarf strings.
+class SrcfilesHolder {
+public:
+    SrcfilesHolder():dbg_(0),srcfiles_(0),cnt_(0),refcount_(new int(1)) { };
+    SrcfilesHolder(Dwarf_Debug dbg, char **srcfiles, Dwarf_Signed cnt):
+        dbg_(dbg),srcfiles_(srcfiles),cnt_(cnt),refcount_(new int(1)) { };
+    ~SrcfilesHolder() {
+        (*refcount_)--;
+        if( (*refcount_) == 0) {
+            delete refcount_; 
+            if(srcfiles_) do_delete();
+        }
+    };
+    SrcfilesHolder(const SrcfilesHolder & d):dbg_(d.dbg_),
+        srcfiles_(d.srcfiles_),cnt_(d.cnt_),
+        refcount_(d.refcount_) {
+        (*refcount_)++;
+    };
+    SrcfilesHolder & operator=(const SrcfilesHolder & d) {
+        if(this != &d) {
+            (*d.refcount_)++;
+            (*refcount_)--;
+            if( (*refcount_) == 0) {
+                delete refcount_; 
+                if(srcfiles_) do_delete();
+            }
+            refcount_ = d.refcount_;
+            srcfiles_ = d.srcfiles_;
+            cnt_ = d.cnt_;
+            dbg_ = d.dbg_;
+        }
+        return *this;
+    };
+    Dwarf_Signed count() { return cnt_; };
+    char ** srcfiles() { return srcfiles_; };
+    Dwarf_Debug dbg() { return dbg_; };
+private:
+    void do_delete() {
+        for (Dwarf_Signed si = 0; si < cnt_; ++si) {
+            dwarf_dealloc(dbg_, srcfiles_[si], DW_DLA_STRING);
+        }
+        dwarf_dealloc(dbg_, srcfiles_, DW_DLA_LIST);
+    };
+    Dwarf_Debug dbg_;
+    char **srcfiles_;
+    Dwarf_Signed  cnt_;
+    int *refcount_;
+};
+#endif  // SRCFILESHOLDER_H