Update io_socket.c

Signed-off-by: Josef Edwards <joed6834@colorado.edu>

io_socket.c

@@ -5,20 +5,68 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <unistd.h>
+#include "memory_silo.h"
+#include "io_socket.h"
 
-// IO Socket Structure
+// Structure for PML Logic Loop
 typedef struct {
     int id;
     int memory_silo_id;
-    int socket;
-} io_socket_t;
+    int io_socket_id;
+    int free_c_present; // Flag indicating the presence of free.c
+} pml_logic_loop_t;
 
-// Global variable to hold the IO socket instance
+// Global variables
+pml_logic_loop_t* pml_logic_loop = NULL;
 io_socket_t* io_socket_instance = NULL;
 
-// IO Socket Functions
+// Initialization of the PML Logic Loop
+void pml_logic_loop_init(int memory_silo_id, int io_socket_id) {
+    pml_logic_loop = malloc(sizeof(pml_logic_loop_t));
+    if (pml_logic_loop == NULL) {
+        perror("Memory allocation for PML logic loop failed");
+        exit(EXIT_FAILURE);
+    }
+    pml_logic_loop->id = 1;
+    pml_logic_loop->memory_silo_id = memory_silo_id;
+    pml_logic_loop->io_socket_id = io_socket_id;
+    pml_logic_loop->free_c_present = 0; // Initialize the flag to indicate absence
+    // Attempt to load persisted state (from persistence.c)
+    load_pml_logic_loop_state(pml_logic_loop); // Assuming this function is in persistence.c
+}
+
+// Processing within the PML Logic Loop
+void pml_logic_loop_process() {
+    if (pml_logic_loop == NULL) {
+        fprintf(stderr, "Error: PML logic loop has not been initialized.\n");
+        return;
+    }
+
+    while (1) {
+        if (pml_logic_loop->free_c_present) {
+            printf("Free.c is detected. Sending signal to the free logic loop...\n");
+            int signal = 1; // Signal to indicate that the condition has been met
+            if (write(io_socket_instance->socket, &signal, sizeof(signal)) < 0) {
+                perror("Failed to write to the socket");
+            }
+            system("./free"); // Trigger the execution of free.c
+            break; // Exit the loop after signaling
+        } else {
+            printf("I am grateful.\n");
+            // Process data or handle other tasks
+            // Example of interacting with memory silo (if needed)
+            void* buffer = malloc(1024);  // Example buffer size
+            io_socket_read(buffer, 1024);
+            // Do processing on the buffer here
+
+            // Example: Persist the state periodically
+            save_pml_logic_loop_state(pml_logic_loop); // Assuming this function is in persistence.c
+        }
+    }
+}
+
+// Function to initialize the I/O socket
 void io_socket_init(int memory_silo_id) {
-    // Initialize the IO socket
     io_socket_instance = malloc(sizeof(io_socket_t));
     if (io_socket_instance == NULL) {
         perror("Failed to allocate memory for IO socket");
@@ -34,8 +82,8 @@ void io_socket_init(int memory_silo_id) {
     }
 }
 
+// I/O socket functions
 void io_socket_read(void* buffer, int length) {
-    // Read from the IO socket
     if (io_socket_instance == NULL) {
         fprintf(stderr, "IO socket not initialized.\n");
         return;
@@ -47,7 +95,6 @@ void io_socket_read(void* buffer, int length) {
 }
 
 void io_socket_write(void* buffer, int length) {
-    // Write to the IO socket
     if (io_socket_instance == NULL) {
         fprintf(stderr, "IO socket not initialized.\n");
         return;
@@ -58,12 +105,6 @@ void io_socket_write(void* buffer, int length) {
     }
 }
 
-// Get IO Socket Function (for demonstration, returns the global instance)
-io_socket_t* get_io_socket(void) {
-    // Get the IO socket associated with the socket
-    return io_socket_instance;
-}
-
 // Cleanup function to free allocated resources
 void io_socket_cleanup() {
     if (io_socket_instance != NULL) {
@@ -72,3 +113,47 @@ void io_socket_cleanup() {
         io_socket_instance = NULL;
     }
 }
+
+// Placeholder for persistence functions in persistence.c
+void save_pml_logic_loop_state(pml_logic_loop_t* logic_loop) {
+    // Implement the logic to save the state (e.g., to a file or database)
+    // Example: Write the state to a file
+    FILE* file = fopen("pml_logic_loop_state.dat", "wb");
+    if (file != NULL) {
+        fwrite(logic_loop, sizeof(pml_logic_loop_t), 1, file);
+        fclose(file);
+    } else {
+        perror("Failed to save state");
+    }
+}
+
+void load_pml_logic_loop_state(pml_logic_loop_t* logic_loop) {
+    // Implement the logic to load the state (e.g., from a file or database)
+    // Example: Read the state from a file
+    FILE* file = fopen("pml_logic_loop_state.dat", "rb");
+    if (file != NULL) {
+        fread(logic_loop, sizeof(pml_logic_loop_t), 1, file);
+        fclose(file);
+    } else {
+        perror("Failed to load state");
+    }
+}
+
+int main() {
+    // Initialize memory silo ID and I/O socket ID as needed
+    int memory_silo_id = 1;
+    int io_socket_id = 1;
+
+    // Initialize IO socket
+    io_socket_init(memory_silo_id);
+
+    // Initialize PML Logic Loop
+    pml_logic_loop_init(memory_silo_id, io_socket_id);
+
+    // Process the PML Logic Loop
+    pml_logic_loop_process();
+
+    // Cleanup
+    io_socket_cleanup();
+    return 0;
+}