source: tests/io/io-acquire2.cfa @ 2e94d94f

// 
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
// 
// io-acquire.cfa -- 
// 
// Author           : Peter A. Buhr
// Created On       : Mon Mar  1 18:40:09 2021
// Last Modified By : Peter A. Buhr
// Last Modified On : Mon Jan 10 16:10:20 2022
// Update Count     : 74
// 

#include <fstream.hfa>
#include <thread.hfa>
#include <mutex_stmt.hfa>

Duration default_preemption() { return 0; }

thread T {};
void main( T & ) {
        // output from parallel threads should not be scrambled

        for ( 100 ) {                                                                           // expression protection
                mutex( sout ) sout | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
        }
        mutex( sout ) {                                                                         // statement protection
                for ( 100 ) {
                        sout | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
                }
        }
        {                                                                                                       // duplicate protection demonstrating recursive lock
                ofstream & h1( ofstream & os ) {                                // helper
                        mutex( os ) return os | 1 | 2 | 3 | 4;          // unnecessary mutex
                }
                ofstream & h2( ofstream & os ) {                                // helper
                        mutex( os ) return os | 6 | 7 | 8 | 9;          // unnecessary mutex
                }
                mutex( sout ) {                                                                 // unnecessary mutex
                        for ( 100 ) {
                                mutex( sout ) {
                                        sout | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
                                        sout | h1 | 5 | h2;                                     // refactored code
                                }
                        }
                }
        }

        // above output used as input to parallel threads 

        int a, b, c, d, e, f, g, h, i;
        for ( 100 ) {                                                                           // expression protection
                mutex( sin ) sin | a | b | c | d | e | f | g | h | i;
        }
        mutex( sin ) {                                                                          // statement protection
                for ( 100 ) {
                        sin  | a | b | c | d | e | f | g | h | i;
                }
        }
        {                                                                                                       // duplicate protection demonstrating recursive lock
                ifstream & h1( ifstream & is ) {                                // helper
                        mutex( is ) return is | a | b | c | d;          // unnecessary mutex
                }
                ifstream & h2( ifstream & is ) {                                // helper
                        mutex( is ) return is | f | g | h | i;          // unnecessary mutex
                }
                mutex( sin ) {                                                                  // unnecessary mutex
                        for ( 5 ) {
                                mutex( sin ) {
                                        sin  | a | b | c | d | e | f | g | h | i;
                                        sin  | h1 | e | h2;                                     // refactored code
                                }
                        }
                }
        }
}
int main() {
        processor p;
        T t[5];
} 

// Local Variables: //
// tab-width: 4 //
// compile-command: "cfa io-acquire2.cfa" //
// End: //