#ifndef _posix_check_h
#define _posix_check_h

/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */

#include <cerrno>
#include <string>
#include "qpid/QpidError.h"

namespace qpid {
namespace sys {

/**
 * Exception with message from errno.
 */
class PosixError : public qpid::QpidError
{
  public:
    static std::string getMessage(int errNo);
    
    PosixError(int errNo, const qpid::SrcLine& location) throw();
    
    ~PosixError() throw() {}
    
    int getErrNo() { return errNo; }

    Exception::auto_ptr clone() const throw() { return Exception::auto_ptr(new PosixError(*this)); }
        
    void throwSelf() const { throw *this; }

  private:
    int errNo;
};

}}

/** Create a PosixError for the current file/line and errno. */
#define QPID_POSIX_ERROR(errNo) ::qpid::sys::PosixError(errNo, SRCLINE)

/** Throw QPID_POSIX_ERROR(errno) if RESULT is less than zero */
#define QPID_POSIX_CHECK(RESULT)                        \
    if ((RESULT) < 0) throw QPID_POSIX_ERROR((errno))

/** Throw a posix error if errNo is non-zero */
#define QPID_POSIX_THROW_IF(ERRNO)              \
    if ((ERRNO) != 0) throw QPID_POSIX_ERROR((ERRNO))
#endif  /*!_posix_check_h*/
