Inheritance diagram for FileDescriptor:

[legend]

Public Member Functions
	FileDescriptor (int fd)

int	get_fd () const

bool	select (int sec=-1, int usec=-1)

bool	select2 (int sec=-1, int usec=-1)

bool	close ()

Protected Attributes
int	m_fd

Detailed Description

Definition at line 17 of file FileDescriptor.h.

Constructor & Destructor Documentation

◆ FileDescriptor() [1/2]

FileDescriptor ( )

Definition at line 18 of file FileDescriptor.cc.

{
  m_fd = -1;
}

◆ FileDescriptor() [2/2]

FileDescriptor ( int fd )

Definition at line 23 of file FileDescriptor.cc.

{
  m_fd = fd;
}

◆ ~FileDescriptor()

~FileDescriptor ( )

virtual

Definition at line 28 of file FileDescriptor.cc.

{
 
}

Member Function Documentation

◆ close()

bool close ( )

Definition at line 90 of file FileDescriptor.cc.

{
  if (m_fd > 0) {
    if (::close(m_fd) != 0) {
      return false;
    }
  }
  m_fd = -1;
  return true;
}

◆ get_fd()

int get_fd ( ) const

Definition at line 33 of file FileDescriptor.cc.

{
  return m_fd;
}

◆ select()

bool select	(	int	sec = -1,
		int	usec = -1 )

Definition at line 38 of file FileDescriptor.cc.

{
  if (m_fd <= 0) {
    return false;
  }
  fd_set fds;
  FD_ZERO(&fds);
  FD_SET(m_fd, &fds);
  int ret;
  if (sec >= 0 && usec >= 0) {
    timeval t = {sec, usec};
    ret = ::select(FD_SETSIZE, &fds, NULL, NULL, &t);
  } else {
    ret = ::select(FD_SETSIZE, &fds, NULL, NULL, NULL);
  }
  if (ret < 0) {
    perror("select");
    throw (IOException("Failed to select"));
  }
  if (FD_ISSET(m_fd, &fds)) {
    return true;
  } else {
    return false;
  }
}

◆ select2()

bool select2	(	int	sec = -1,
		int	usec = -1 )

Definition at line 64 of file FileDescriptor.cc.

{
  if (m_fd <= 0) {
    return false;
  }
  fd_set fds;
  FD_ZERO(&fds);
  FD_SET(m_fd, &fds);
  int ret;
  if (sec >= 0 && usec >= 0) {
    timeval t = {sec, usec};
    ret = ::select(FD_SETSIZE, NULL, &fds, NULL, &t);
  } else {
    ret = ::select(FD_SETSIZE, NULL, &fds, NULL, NULL);
  }
  if (ret < 0) {
    perror("select");
    throw (IOException("Failed to select"));
  }
  if (FD_ISSET(m_fd, &fds)) {
    return true;
  } else {
    return false;
  }
}

Member Data Documentation

◆ m_fd

int m_fd

protected

Definition at line 31 of file FileDescriptor.h.

The documentation for this class was generated from the following files:

daq/slc/system/include/FileDescriptor.h
daq/slc/system/src/FileDescriptor.cc

Public Member Functions

Protected Attributes