ACE_File_Lock(3)

NAME

ACE_File_Lock - A wrapper around the UNIX file locking mechanism.

SYNOPSIS

#include <ace/Synch.h>
class ACE_File_Lock
{
  public:
    ACE_File_Lock (ACE_HANDLE handle = ACE_INVALID_HANDLE);
    ACE_File_Lock (LPCTSTR filename, int flags, mode_t mode = 0);
    int open (LPCTSTR filename, int flags, mode_t mode = 0);
    ~ACE_File_Lock (void);
    int remove (void);
    int acquire (short whence = 0, off_t start = 0, off_t len = 1);
    int tryacquire (short whence = 0, off_t start = 0, off_t len = 1);
    int release (short whence = 0, off_t start = 0, off_t len = 1);
    int acquire_write (
        short whence = 0,
        off_t start = 0,
        off_t len = 1
        );
    int tryacquire_write (
        short whence = 0,
        off_t start = 0,
        off_t len = 1
        );
    int acquire_read (
        short whence = 0,
        off_t start = 0,
        off_t len = 1
        );
    int tryacquire_read (
        short whence = 0,
        off_t start = 0,
        off_t len = 1
        );
    ACE_HANDLE get_handle (void);
    void set_handle (ACE_HANDLE);
    void dump (void) const;
    ACE_ALLOC_HOOK_DECLARE;
  protected:
    ACE_OS::ace_flock_t lock_;
    int removed_;
  private:
    void operator= (const ACE_File_Lock &);
    ACE_File_Lock (const ACE_File_Lock &);
};

DESCRIPTION

Wrappers for various synchronization routines.

Prevent assignment and initialization.

void operator= (const ACE_File_Lock &);

ACE_File_Lock (const ACE_File_Lock &);

AUTHOR

Doug Schmidt

LIBRARY

ace