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/*
* Copyright (C) 2009-2010 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
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