add queue

task_3/CMakeLists.txt

@@ -3,10 +3,11 @@ cmake_minimum_required(VERSION 3.13)
 project(hello-world-cpp-logger)
 
 
+add_library(my_time STATIC my_time.cpp)
 add_library(log_writer STATIC log_writer.cpp)
 add_library(process_launcher STATIC process_launcher.cpp)
 add_library(counter_manager STATIC counter_manager.cpp)
 
 add_executable(main main.cpp)
 
-target_link_libraries(main log_writer process_launcher counter_manager)
+target_link_libraries(main my_time log_writer process_launcher counter_manager)

task_3/counter.txt

@@ -1 +1 @@
-28
+107

task_3/counter_manager.cpp

@@ -2,6 +2,9 @@
 
 
 
+
+
+
 long long int CounterManager::get_counter() {
     char data_from_file[128];
     int num_bytes = 128;
@@ -24,6 +27,57 @@ long long int CounterManager::get_counter() {
 
 
 int CounterManager::set_counter(long long int new_counter) {
+    long long int current_timestamp = MyTime::get_timestamp(), foreign_timestamp;
+    std::string queue_directory = "queue";
+    std::string queue_member = std::to_string(current_timestamp) + "_" + std::to_string(getpid()) + ".txt";
+    std::string queue_member_path = queue_directory + "/" + queue_member;
+
+    std::string filename, temp_str;
+
+
+    int queue_member_fd = open(queue_member_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0777);
+    if (queue_member_fd == -1) { // Если ошибка при открытии
+        std::cerr << "queue member can't be created" << std::endl;
+        return -1;
+    }
+    close(queue_member_fd);
+
+    // std::cout << queue_member << " created" << "\n";
+
+    bool start_operation = 0;
+    DIR* dir;
+    struct dirent* entry;
+
+    while (!start_operation) {
+        usleep((useconds_t)(100 * 1000));
+        // std::cout << queue_member << " wait" << "\n";
+
+        dir = opendir(queue_directory.c_str());
+        
+        start_operation = 1;
+        while ((entry = readdir(dir)) != nullptr) {
+            // Исключаем "." и ".."
+            filename = std::string(entry->d_name);
+            if (filename == "." || filename == "..") {
+                continue;
+            }
+            // std::cout << queue_member << " file prev: " << filename << "\n";
+            temp_str = "";
+            for (char sym : filename) {
+                if (sym == '_') {
+                    break;
+                }
+                temp_str += sym;
+            }
+            foreign_timestamp = atoll(temp_str.c_str());
+            if (foreign_timestamp < current_timestamp) {
+                start_operation = 0;
+                break;
+            }
+    }
+    }
+
+
     std::string new_counter_string = std::to_string(new_counter);
     int fd = open(
         "counter.txt",
@@ -37,5 +91,13 @@ int CounterManager::set_counter(long long int new_counter) {
     write(fd, new_counter_string.c_str(), new_counter_string.length());
     close(fd);
 
+
+    int status = remove(queue_member_path.c_str());
+    if (status != 0) {
+        perror("Error deleting file");
+    }
+
+    // std::cout << queue_member << " deleted" << "\n";
+
     return 0;
 }

task_3/counter_manager.h

@@ -1,7 +1,13 @@
+#include "my_time.h"
+
 #include <string>
 #include <fcntl.h>
 #include <unistd.h>
 
+#include <dirent.h>
+
+#include <iostream>
+
 
 class CounterManager {
 public:

task_3/log_writer.cpp

@@ -1,5 +1,6 @@
 #include "log_writer.h"
 
+
 int LogWriter::write_log(const std::string& log_line) {
     std::string new_line = "\n";
     int fd = open(
@@ -20,23 +21,12 @@ int LogWriter::write_log(const std::string& log_line) {
 }
 
 
-std::string LogWriter::get_current_time() {
-    time_t rawtime;
-    struct tm * timeinfo;
-    time ( &rawtime );
-    timeinfo = localtime ( &rawtime );
-    std::string res = asctime (timeinfo);
-    res.pop_back();
-    return res;
-}
-
-
 void LogWriter::log_start_line(){
     std::string log_line = (
         "start programm with pid " +
         std::to_string(getpid()) +
         " at " +
-        get_current_time()
+        MyTime::get_current_time()
     );
     write_log(log_line);
 }
@@ -45,7 +35,7 @@ void LogWriter::log_start_line(){
 void LogWriter::log_counter(long long int counter){
     std::string log_line = (
         "counter at " +
-        get_current_time() +
+        MyTime::get_current_time() +
         " in process with pid " +
         std::to_string(getpid()) +
         " is " +
@@ -59,7 +49,7 @@ void LogWriter::log_copy_start(std::string copy_name) {
     std::string log_line = (
         copy_name + 
         " is started at " +
-        get_current_time() +
+        MyTime::get_current_time() +
         " with pid " +
         std::to_string(getpid())
     );
@@ -70,7 +60,7 @@ void LogWriter::log_copy_finish(std::string copy_name) {
     std::string log_line = (
         copy_name + 
         " is finished at " +
-        get_current_time()
+        MyTime::get_current_time()
     );
     write_log(log_line);
 }

task_3/log_writer.h

@@ -1,7 +1,9 @@
+#include "my_time.h"
+
 #include <string>
 #include <unistd.h>
 #include <fcntl.h>
-#include <time.h>
+
 
 
 class LogWriter {
@@ -12,9 +14,6 @@ public:
     static void log_copy_finish(std::string copy_name);
     static void log_copy_error(std::string copy_name);
 
-protected:
-    static std::string get_current_time();
-
 private:
     static int write_log(const std::string& log_line);
     

task_3/main.cpp

@@ -2,7 +2,9 @@
 #include "log_writer.h"
 #include "counter_manager.h"
 
-#include <sys/time.h>
+#include <sys/stat.h>
+#include <iostream>
+
 
 
 struct two_pid {
@@ -32,13 +34,6 @@ struct two_pid {
 #endif
 
 
-long long int get_timestamp_ms() {
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-
-    return (((long long int)tv.tv_sec)*1000)+(tv.tv_usec/1000);
-
-}
 
 int main(int argc, char* argv[]) {
     if (argc >= 2) {
@@ -59,17 +54,38 @@ int main(int argc, char* argv[]) {
         }
     }
 
+    // create dir if it doesn't exist
+    struct stat info;
+    std::string dirpath = "queue";
+    if (!(stat(dirpath.c_str(), &info) == 0 && (info.st_mode & S_IFDIR))) {
+        mkdir(dirpath.c_str()) == 0;
+    }
+
+
+    DIR* dir;
+    struct dirent* entry;
+    std::string filename_temp;
+    dir = opendir(dirpath.c_str());
+    while ((entry = readdir(dir)) != nullptr) {
+        // Исключаем "." и ".."
+        filename_temp = std::string(entry->d_name);
+        if (filename_temp == "." || filename_temp == "..") {
+            continue;
+        }
+        remove((dirpath + "\\" + filename_temp).c_str());
+    }
+
     LogWriter::log_start_line();
 
     struct two_pid pid_of_copy_processes;
 
-    long long int last_counter_increment = get_timestamp_ms();
-    long long int last_counter_logging = get_timestamp_ms();
-    long long int last_copies_launching = get_timestamp_ms();
+    long long int last_counter_increment = MyTime::get_timestamp();
+    long long int last_counter_logging = MyTime::get_timestamp();
+    long long int last_copies_launching = MyTime::get_timestamp();
     long long int current_time;
 
     while (1) {
-        current_time = get_timestamp_ms();
+        current_time = MyTime::get_timestamp();
 
         if ((current_time - last_counter_increment) >= 300) {
             last_counter_increment = current_time;

task_3/my_time.cpp

@@ -0,0 +1,19 @@
+#include "my_time.h"
+
+std::string MyTime::get_current_time() {
+    time_t rawtime;
+    struct tm * timeinfo;
+    time ( &rawtime );
+    timeinfo = localtime ( &rawtime );
+    std::string res = asctime (timeinfo);
+    res.pop_back();
+    return res;
+}
+
+
+long long int MyTime::get_timestamp() {
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+
+    return (((long long int)tv.tv_sec)*1000)+(tv.tv_usec/1000);
+}

task_3/my_time.h

@@ -0,0 +1,16 @@
+#ifndef MY_TIME_H
+#define MY_TIME_H
+
+#include <string>
+#include <time.h>
+#include <sys/time.h>
+
+
+class MyTime {
+public:
+    static std::string get_current_time();
+    static long long int get_timestamp();
+};
+
+
+#endif // MY_TIME_H