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John 2022-04-28 23:56:52 -05:00
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Project 2 for CSCE4600, for Team G4 Project 2 for CSCE4600, for Team G4
```
╔════════════════╦══════════════════════════╗
║ John Breaux ║ JohnBreaux@my.unt.edu ║
║ Gabriel Castro ║ GabrielCastro@my.unt.edu ║
║ Michael Laymon ║ MichaelLaymon@my.unt.edu ║
╠════════════════╩══════════════════════════╣
║ Created 2022-04-16 Updated 2022-04-28 ║
╚═══════════════════════════════════════════╝
```
## Build ## Build
Build with `make` Build with `make`
@ -9,3 +20,37 @@ Build with `make`
Run with `./main.out filename` Run with `./main.out filename`
Clean with `make clean` Clean with `make clean`
## Run
Run with `./main.out [input_f
## Analysis, Benefits and Drawbacks
### Analysis:
- We implemented the Graph Reduction algorithm on adjacency matrices, with some minor optimizations:
- By counting the number of remaining processes, and comparing it to the number of processes eliminated so far, we can detect when the algorithm has failed a single time, after which it'll fail forever.
-
### Benefits:
- The graph reduction algorithm is very elegant, but also easy to optimize
- "Deleting" a node from an adjacency matrix can be performed by zeroing its respective row and column and re-running the algorithm, which is very simple!
### Drawbacks:
- The adjacency matrix representation is used without interpretation, making the output somewhat hard to read
- Our implementation of knot detection didn't pan out.
## Contributions:
### John Breaux:
- src/graph.cpp, inc/graph.hpp (graph implementation)
- src/main.cpp
- src/read.cpp, inc/read.hpp (reading from graph)
- src/reducible.cpp (graph reduction)
- .clang-format
- Makefile (Makefile)
- Readme.md
- Hosted the git repo
### Michael Laymon
- knotted.cpp

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Gabriel Castro GabrielCastro@my.unt.edu Gabriel Castro GabrielCastro@my.unt.edu
Michael Laymon MichaelLaymon@my.unt.edu Michael Laymon MichaelLaymon@my.unt.edu
Created 2022-04-16 Updated 2022-04-23 Created 2022-04-16 Updated 2022-04-28
*/ */
#include <string> #include <string>
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#include "graph.hpp" // graph, Graph reduction/Knot detection #include "graph.hpp" // graph, Graph reduction/Knot detection
int main (int argc, char **argv) { int main (int argc, char **argv) {
//? Command line argument structure? // If not enough arguments, print usage
//? Other flags? What other features should this have? if (argc < 2) {
if (argc < 2) return 1; printf("Usage: %s [filename]", argv[0]);
return 1;
}
// Grab the filename from args
std::string filename = argv[1]; std::string filename = argv[1];
// Construct a graph
graph g; graph g;
// Read from a file, and print the result // Read from a file, and print the result
@ -24,8 +28,8 @@ int main (int argc, char **argv) {
} }
g.print (); g.print ();
// Graph reduction // Graph reduction
printf ("Graph is %s\n", g.reducible () ? "not reducible! Deadlock!" : "reducible! No deadlock!"); printf ("Graph is %s\n\n", g.reducible () ? "not reducible! Deadlock!" : "reducible! No deadlock!");
// Knot detection // Knot detection (broken. Algorithm isn't right)
printf ("Graph is %s\n", g.knotted () ? "knotted! Deadlock!" : "not! No deadlock!"); // printf ("Graph is %s\n\n", g.knotted () ? "knotted! Deadlock!" : "not knotted! No deadlock!");
return 0; return 0;
} }