cluExtIO

Syntactic sugar extends I/O capabilities.

Capabilities:

1. EmptyWrite - Empty "Write" that does nothing.
2. UnionWrite - Possibility to combine several "Write" into one record.
3. MutexWrite - Combining Mutex and Write for multi-threaded access.
4. ExtWrite - The trait extends the capabilities of the standard Write, adds lock methods.
5. FlushDropWrite - An implementation of "Trait Write", which calls the flush () method on drop.
6. FlushLockWrite - An implementation of "Trait Write" that calls the flush() method when removing a lock.
7. NotChanWrite - Unchangeable "Trait Write". ...

Use

1. UnionWrite

    extern crate cluExtIO;
   
    use std::io::Write;
    use cluExtIO::UnionWriteConst;
    use std::fs::File;
   
    pub fn main() {
   
    		 let file1 = File::create("/tmp/1.out").unwrap();
    		 //file1 - `Write trait`
   
    		 let file2 = File::create("/tmp/2.out").unwrap();
    		 //file2 - `Write trait`
   
    		 let write = file1.union(file2);
    		 //UnionWrite - `FILE1+FILE2`
   
   
    		 my_function(write).unwrap();
    }
   
    fn my_function<W: Write>(mut w: W) -> Result<(), std::io::Error> {
    		 w.write_fmt(format_args!("#@{} {}\n", 1, "Test"))?;
    		 w.write_fmt(format_args!("#@{} {}\n", 2, "MyString"))?;
    		 w.write_fmt(format_args!("#@{} {}\n", 3, "MyString"))?;
   
    		 Ok( () )
    }
   

2. ExtWrite

    extern crate cluExtIO;
   
    use cluExtIO::ExtWrite;
    use std::io::Write;
   
    pub fn main() {
    		let out = std::io::stdout();
   
    		my_function(&out, 0, "No eND:)").unwrap();
   
    		out.lock_fn(|mut l| {
    				l.write(b"End.\n")
    		}).unwrap();
    }
   
    fn my_function<'a, W: ExtWrite<'a>>(raw_write: &'a W, n: usize, str: &'static str) -> Result<(), std::io::Error> {
    		let mut lock = raw_write.lock();
   
    		lock.write_fmt(format_args!("#@{} {}\n", n, "Test"))?;
    		lock.write_fmt(format_args!("#@{} {}\n", n+1, "MyString"))?;
    		lock.write_fmt(format_args!("#@{} ~{}\n", n+2, str))?;
   
    		Ok( () )
    }
   

3. Threads

    extern crate cluExtIO;
   
    use std::io::stdout;
    use cluExtIO::UnionWriteConst;
    use cluExtIO::ExtWrite;
    use cluExtIO::MutexWrite;
    use cluExtIO::FlushLockWrite;
    use cluExtIO::NotChanWrite;
    use std::io::Write;
    use std::fs::File;
    use std::sync::Arc;
    use std::sync::Barrier;
    use std::thread;
   
    pub fn main() {
    		 let arc_out = Arc::new({       
    				let out = stdout();
   
    				let file = FlushLockWrite::new(MutexWrite::new(File::create("/tmp/file.out").unwrap()));
    				//Contains the implementation of ExtWrite. Safe for inter-thread space.
    				//+ Additional self-cleaning after destroying Lock
   
    				let file2 = FlushLockWrite::new(MutexWrite::new(File::create("/tmp/file2.out").unwrap()));
    				//Contains the implementation of ExtWrite. Safe for inter-thread space.
    				//+ Additional self-cleaning after destroying Lock
   
    				out.union(file).union(file2)
    		 }); //Combined `ExtWrite` with lock function. OUT_PIPE + FILE_PIPE(2) = UNION_SAFE_PIPE
   
   
    		 let barrier = Arc::new(Barrier::new(5 + 1));
   
    		 for num_thread in 0..5 {
    				let barrier = barrier.clone();
    				let arc_out = arc_out.clone();
    				thread::spawn(move || {
   
    						arc_out.lock_fn(|mut lock| {
    								lock.write_fmt(format_args!("#@{} {}\n", num_thread, "Thread #OK")).unwrap();
    								lock.write_fmt(format_args!("#@{} {}\n", num_thread, "Thread #T")).unwrap();
    						});
   
    						barrier.wait();
    				});
    		 }
   
    		 barrier.wait();
   
    		 arc_out.write_fmt(format_args!("#@{} {}\n", 999, "Thread pull end.")).unwrap();
    		 //Arc<UnionWrite>, auto lock methods. (NotChanWrite)
   
    		 // /tmp/file.out+
    		 // /tmp/file.out+
    }
   

License

Copyright 2018 #UlinProject Денис Котляров

Licensed under the Apache License, Version 2.0