From 00a4ee95149fb6a01f0f5a3ea46493198b92f2ec Mon Sep 17 00:00:00 2001
From: Giovanni Bussi <giovanni.bussi@gmail.com>
Date: Tue, 23 Jul 2013 01:00:42 +0200
Subject: [PATCH] PLUMED_MAXBACKUP environment variable
Allows to switch off auto backup or to change the maximum number of
backups
---
src/tools/OFile.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/tools/OFile.cpp b/src/tools/OFile.cpp
index 5587d4a84..28caee7c6 100644
--- a/src/tools/OFile.cpp
+++ b/src/tools/OFile.cpp
@@ -31,6 +31,7 @@
#include <iostream>
#include <string>
+#include <cstdlib>
namespace PLMD{
@@ -221,7 +222,9 @@ OFile& OFile::open(const std::string&path){
if(plumed && plumed->getRestart()){
fp=std::fopen(const_cast<char*>(this->path.c_str()),"a");
} else {
- if(!comm || comm->Get_rank()==0){
+ int maxbackup=100;
+ if(std::getenv("PLUMED_MAXBACKUP")) Tools::convert(std::getenv("PLUMED_MAXBACKUP"),maxbackup);
+ if(maxbackup>0 && (!comm || comm->Get_rank()==0)){
FILE* ff=std::fopen(const_cast<char*>(this->path.c_str()),"r");
FILE* fff=NULL;
if(ff){
@@ -232,6 +235,7 @@ OFile& OFile::open(const std::string&path){
for(int i=0;;i++){
std::string num;
Tools::convert(i,num);
+ if(i>maxbackup) plumed_merror("cannot backup file "+file+" maximum number of backup is "+num+"\n");
backup=directory+"bck."+num+"."+file;
fff=std::fopen(backup.c_str(),"r");
if(!fff) break;
--
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