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/*
* Copyright (c) 2015 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2013 Andreas Sandberg
* Copyright (c) 2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
* Chris Emmons
* Andreas Sandberg
* Sascha Bischoff
*/
#include "base/output.hh"
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <zfstream.h>
#include <cassert>
#include <cerrno>
#include <climits>
#include <cstdlib>
#include <fstream>
#include "base/logging.hh"
using namespace std;
OutputDirectory simout;
OutputStream::OutputStream(const std::string &name, std::ostream *stream)
: _name(name), _stream(stream)
{
}
OutputStream::~OutputStream()
{
}
void
OutputStream::relocate(const OutputDirectory &dir)
{
}
template<class StreamType>
OutputFile<StreamType>::OutputFile(const OutputDirectory &dir,
const std::string &name,
std::ios_base::openmode mode,
bool recreateable)
: OutputStream(name, new stream_type_t()),
_mode(mode), _recreateable(recreateable),
_fstream(static_cast<stream_type_t *>(_stream))
{
_fstream->open(dir.resolve(_name).c_str(), _mode);
assert(_fstream->is_open());
}
template<class StreamType>
OutputFile<StreamType>::~OutputFile()
{
if (_fstream->is_open())
_fstream->close();
}
template<class StreamType>
void
OutputFile<StreamType>::relocate(const OutputDirectory &dir)
{
if (_recreateable) {
_fstream->close();
_fstream->open(dir.resolve(_name).c_str(), _mode);
}
}
OutputStream OutputDirectory::stdout("stdout", &cout);
OutputStream OutputDirectory::stderr("stderr", &cerr);
/**
* @file This file manages creating / deleting output files for the simulator.
*/
OutputDirectory::OutputDirectory()
{}
OutputDirectory::OutputDirectory(const std::string &name)
{
setDirectory(name);
}
OutputDirectory::~OutputDirectory()
{
for (auto& f: files) {
if (f.second)
delete f.second;
}
}
OutputStream *
OutputDirectory::checkForStdio(const string &name)
{
if (name == "cerr" || name == "stderr")
return &stderr;
if (name == "cout" || name == "stdout")
return &stdout;
return NULL;
}
void
OutputDirectory::close(OutputStream *file)
{
auto i = files.find(file->name());
if (i == files.end())
fatal("Attempted to close an unregistred file stream");
files.erase(i);
delete file;
}
void
OutputDirectory::setDirectory(const string &d)
{
const string old_dir(dir);
dir = d;
// guarantee that directory ends with a path separator
if (dir[dir.size() - 1] != PATH_SEPARATOR)
dir += PATH_SEPARATOR;
// Try to create the directory. If it already exists, that's ok;
// otherwise, fail if we couldn't create it.
if ((mkdir(dir.c_str(), 0755) != 0) && (errno != EEXIST))
fatal("Failed to create new output subdirectory '%s'\n", dir);
// Check if we need to recreate anything
if (!old_dir.empty()) {
// Recreate output files
for (file_map_t::iterator i = files.begin(); i != files.end(); ++i) {
i->second->relocate(*this);
}
// Relocate sub-directories
for (dir_map_t::iterator i = dirs.begin(); i != dirs.end(); ++i) {
i->second->setDirectory(dir + PATH_SEPARATOR + i->first);
}
}
}
const string &
OutputDirectory::directory() const
{
if (dir.empty())
panic("Output directory not set!");
return dir;
}
string
OutputDirectory::resolve(const string &name) const
{
return !isAbsolute(name) ? dir + name : name;
}
OutputStream *
OutputDirectory::create(const string &name, bool binary, bool no_gz)
{
OutputStream *file = checkForStdio(name);
if (file)
return file;
const ios_base::openmode mode(
ios::trunc | (binary ? ios::binary : (ios::openmode)0));
const bool recreateable(!isAbsolute(name));
return open(name, mode, recreateable, no_gz);
}
OutputStream *
OutputDirectory::open(const std::string &name,
ios_base::openmode mode,
bool recreateable,
bool no_gz)
{
OutputStream *os;
if (!no_gz && name.find(".gz", name.length() - 3) < name.length()) {
// Although we are creating an output stream, we still need to pass the
// correct mode for gzofstream as this used directly to set the file
// mode.
mode |= std::ios::out;
os = new OutputFile<gzofstream>(*this, name, mode, recreateable);
} else {
os = new OutputFile<ofstream>(*this, name, mode, recreateable);
}
files[name] = os;
return os;
}
OutputStream *
OutputDirectory::find(const string &name) const
{
OutputStream *file = checkForStdio(name);
if (file)
return file;
auto i = files.find(name);
if (i != files.end())
return (*i).second;
return NULL;
}
OutputStream *
OutputDirectory::findOrCreate(const std::string &name, bool binary)
{
OutputStream *os(find(name));
if (os)
return os;
else
return create(name, binary);
}
bool
OutputDirectory::isFile(const string &name) const
{
// definitely a file if in our data structure
if (find(name) != NULL) return true;
struct stat st_buf;
int st = stat(name.c_str(), &st_buf);
return (st == 0) && S_ISREG(st_buf.st_mode);
}
OutputDirectory *
OutputDirectory::createSubdirectory(const string &name)
{
const string new_dir = resolve(name);
if (new_dir.find(directory()) == string::npos)
fatal("Attempting to create subdirectory not in m5 output dir\n");
OutputDirectory *dir(new OutputDirectory(new_dir));
dirs[name] = dir;
return dir;
}
void
OutputDirectory::remove(const string &name, bool recursive)
{
const string fname = resolve(name);
if (fname.find(directory()) == string::npos)
fatal("Attempting to remove file/dir not in output dir\n");
if (isFile(fname)) {
// close and release file if we have it open
auto i = files.find(fname);
if (i != files.end()) {
delete i->second;
files.erase(i);
}
if (::remove(fname.c_str()) != 0)
fatal("Could not erase file '%s'\n", fname);
} else {
// assume 'name' is a directory
if (recursive) {
DIR *subdir = opendir(fname.c_str());
// silently ignore removal request for non-existent directory
if ((!subdir) && (errno == ENOENT))
return;
// fail on other errors
if (!subdir) {
perror("opendir");
fatal("Error opening directory for recursive removal '%s'\n",
fname);
}
struct dirent *de = readdir(subdir);
while (de != NULL) {
// ignore files starting with a '.'; user must delete those
// manually if they really want to
if (de->d_name[0] != '.')
remove(name + PATH_SEPARATOR + de->d_name, recursive);
de = readdir(subdir);
}
closedir(subdir);
}
// try to force recognition that we deleted the files in the directory
sync();
if (::remove(fname.c_str()) != 0) {
perror("Warning! 'remove' failed. Could not erase directory.");
}
}
}