gwj / po_oopc · Commits

Commit f39aa06cfae97b030f42c7ab176e45b0b80c5938

Authored by Grzegorz Jabłoński
1 parent ebd8d90f

Three steps to FIFO

Inline Side-by-side
Showing 4 changed files with 75 additions and 3 deletions
examples09/07-fifo/fifo1_bad.cpp 0 → 100644
  View file @f39aa06
  1 +#include <deque>
  2 +#include <list>
  3 +#include <iostream>
  4 +#include <thread>
  5 +#include <unistd.h>
  6 +#include <chrono>
  7 +
  8 +using namespace std;
  9 +
  10 +std::deque<unsigned int> FIFO;
  11 +
  12 +void process()
  13 +{
  14 + while(1)
  15 + {
  16 + if (!FIFO.empty())
  17 + {
  18 + cout << FIFO.back() << endl;
  19 + FIFO.pop_back();
  20 + };
  21 + }
  22 +}
  23 +
  24 +int main()
  25 +{
  26 + std::thread t(process);
  27 + unsigned int i = 0;
  28 + while(1)
  29 + {
  30 + FIFO.push_front(i++);
  31 + std::this_thread::sleep_for(10ms);
  32 + }
  33 +}
examples09/07-fifo/fifo2.cpp 0 → 100644
  View file @f39aa06
  1 +#include <deque>
  2 +#include <list>
  3 +#include <iostream>
  4 +#include <thread>
  5 +#include <mutex>
  6 +#include <unistd.h>
  7 +#include <chrono>
  8 +
  9 +using namespace std;
  10 +
  11 +std::deque<unsigned int> FIFO;
  12 +std::mutex FIFO_lock;
  13 +
  14 +void process()
  15 +{
  16 + while(1)
  17 + {
  18 + std::unique_lock l(FIFO_lock);
  19 + if(!FIFO.empty())
  20 + {
  21 + cout << FIFO.back() << endl;
  22 + FIFO.pop_back();
  23 + }
  24 + }
  25 +}
  26 +
  27 +int main()
  28 +{
  29 + std::thread t(process);
  30 + unsigned int i = 0;
  31 + while(1)
  32 + {
  33 + {
  34 + std::unique_lock l(FIFO_lock);
  35 + FIFO.push_front(i++);
  36 + }
  37 + std::this_thread::sleep_for(10ms);
  38 + }
  39 +}
examples09/07-fifo/fifo.cpp renamed to examples09/07-fifo/fifo3.cpp
  View file @f39aa06
examples09/07-fifo/makefile
  View file @f39aa06
1 -all: fifo 1 +all: fifo1_bad fifo2 fifo3
2 2
3 -fifo: fifo.cpp 3 +.cpp:
4 g++ -std=c++17 -g -Wall -pedantic $^ -o $@ -lpthread 4 g++ -std=c++17 -g -Wall -pedantic $^ -o $@ -lpthread
5 5
6 6
7 .PHONY: clean 7 .PHONY: clean
8 8
9 clean: 9 clean:
10 - -rm fifo  
11 \ No newline at end of file 10 \ No newline at end of file
  11 + -rm fifo1_bad fifo2 fifo3
12 \ No newline at end of file 12 \ No newline at end of file