修改节点扇入时，不用&做分割符，改为增加前四字节作为数据长度

.env

@@ -1,3 +1,3 @@
-LD_LIBRARY_PATH=/home/hai/sledge-old/runtime/bin
+LD_LIBRARY_PATH=/home/weihao/sledge/sledge_tree/runtime/bin
 SLEDGE_SCHEDULER=EDF
-SLEDGE_SANDBOX_PERF_LOG=/home/hai/sledge-old/runtime_sandbox_perf_log.log
+SLEDGE_SANDBOX_PERF_LOG=/home/weihao/sledge/sledge_tree/runtime_sandbox_perf_log.log

.vscode/launch.json

@@ -1,7 +1,4 @@
 {
-	// Use IntelliSense to learn about possible attributes.
-	// Hover to view descriptions of existing attributes.
-	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
   "version": "0.2.0",
   "configurations": [
     {
@@ -58,7 +55,9 @@
       ],
       "stopAtEntry": false,
       "cwd": "${workspaceFolder}",
-			"sourceFileMap": {"/sledge/runtime": "${workspaceFolder}/runtime"},
+      "sourceFileMap": {
+        "/sledge/runtime": "${workspaceFolder}/runtime"
+      },
       "environment": [],
       "externalConsole": false,
       "MIMode": "gdb",
@@ -91,6 +90,25 @@
           "ignoreFailures": true
         }
       ]
+    },
+    {
+      "name": "C/C++ Runner: Debug Session",
+      "type": "cppdbg",
+      "request": "launch",
+      "args": [],
+      "stopAtEntry": false,
+      "externalConsole": false,
+      "cwd": "/home/weihao/sledge/sledge_tree/runtime/tests/noop",
+      "program": "/home/weihao/sledge/sledge_tree/runtime/tests/noop/build/Debug/outDebug",
+      "MIMode": "gdb",
+      "miDebuggerPath": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        }
+      ]
     }
   ]
 }

runtime/include/sandbox_request.h

@@ -18,7 +18,7 @@ struct sandbox_pre_functions_output {
 	char * previous_function_output;
 	ssize_t output_length;
 	uint32_t run_priority;
-	struct sandbox_pre_functions_output * next;
+	struct sandbox_pre_functions_output* next;
 };
 struct sandbox_request {
 	uint64_t        id;
@@ -127,6 +127,7 @@ sandbox_request_allocate(struct module *module, bool request_from_outside, ssize
 * @param output the output of the previous function
 * @param output_length the length of the output
 * @param run_priority the run_priority of the sandbox->module->run_priority
+* The first four bytes of the data represent the length of the data, and the tail character & serves as the delimiter marker
 **/
 static inline void
 pre_functions_output_request_add(struct sandbox_request *request, char *output, ssize_t output_length, uint32_t run_priority)
@@ -179,8 +180,22 @@ concatenate_outputs(struct sandbox_request *request) {
     size_t total_length = 0;  // Calculate total length without extra for null character
     struct sandbox_pre_functions_output *current = request->pre_functions_output;
 
+	if(current && !current->next) 
+	{
+		char *previous_function_output = (char *)malloc(current->output_length);
+    	if (!previous_function_output) {
+        	panic("Could not allocate memory for concatenated output");
+        	return;
+    	}
+		memcpy(previous_function_output, current->previous_function_output, current->output_length);
+		request->output_length = current->output_length;
+		request->previous_function_output = previous_function_output;
+		return;
+	}
+
+	/* 4 bytes of data represents the length of the data */
     while (current != NULL) {
-        total_length += current->output_length; 
+        total_length += current->output_length + 4; 
         current = current->next;
     }
 
@@ -194,15 +209,15 @@ concatenate_outputs(struct sandbox_request *request) {
     current = request->pre_functions_output;
 
  	while (current != NULL) {
+
     	size_t copy_length = current->output_length;
-    	if (current->next) {
-        	memcpy(copy_dest, current->previous_function_output, copy_length - 1);
-  		    copy_dest[copy_length - 1] = '&'; 
-			copy_dest += copy_length;      
-		} else {
+
+		*(uint32_t *)copy_dest = (uint32_t)copy_length;
+        copy_dest += 4;
+		
  		memcpy(copy_dest, current->previous_function_output, copy_length);
-			break;
-		}
+        copy_dest += copy_length;
+
     	current = current->next;
 	}
 

runtime/tests/fibonacciadd/main.c

@@ -2,8 +2,8 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <stdint.h>
 
-// 假设的 Fibonacci 函数实现
 unsigned long int fib(unsigned long int n) {
     if (n <= 1) return n;
     return fib(n - 1) + fib(n - 2);
@@ -12,26 +12,44 @@ unsigned long int fib(unsigned long int n) {
 int main() {
     char buffer[1024];  // Buffer to store input data
 
-    // Read data from stdin into buffer
     ssize_t bytes_read = read(0, buffer, sizeof(buffer) - 1);
     if (bytes_read < 0) {
         perror("Error reading input");
         return 1;
     }
-    buffer[bytes_read] = '\0'; 
+    buffer[bytes_read] = '\0';  // Null-terminate the string
 
-    // Remove potential newline character at the end of the input
-    if (bytes_read > 0 && (buffer[bytes_read - 1] == '\n' || buffer[bytes_read - 1] == '\r')) {
-        buffer[bytes_read - 1] = '\0';
+    // Parse the expected data length from the first 4 bytes for the first number
+    if (bytes_read < 4) {
+        fprintf(stderr, "Input is too short to contain valid data length.\n");
+        return 1;
+    }
+
+    // First number length and number
+    uint32_t first_num_length;
+    memcpy(&first_num_length, buffer, sizeof(uint32_t));
+    char *first_num_start = buffer + 4;
+    if (bytes_read < 4 + first_num_length + 4) {  // Check if there is enough data for the first number and the second length
+        fprintf(stderr, "Input does not contain enough data for the first number and the second length.\n");
+        return 1;
     }
 
+    // Second number length and number
+    uint32_t second_num_length;
+    memcpy(&second_num_length, first_num_start + first_num_length, sizeof(uint32_t));
+    char *second_num_start = first_num_start + first_num_length + 4;
+    if (bytes_read < 4 + first_num_length + 4 + second_num_length) {  // Check if there is enough data for the second number
+        fprintf(stderr, "Input does not contain enough data for the second number.\n");
+        return 1;
+    }
+
+    // Read and calculate Fibonacci numbers
     unsigned long int num1, num2;
-    char *line = strtok(buffer, "&");
-    char *second_part = strtok(NULL, "&"); // Assume the rest of the string is the second number
+    if (sscanf(first_num_start, "%lu", &num1) != 1 || sscanf(second_num_start, "%lu", &num2) != 1) {
+        fprintf(stderr, "Failed to parse the numbers correctly.\n");
+        return 1;
+    }
 
-    if (line && sscanf(line, "%lu", &num1) == 1 && 
-        second_part && sscanf(second_part, "%lu", &num2) == 1) {
-        // Calculate Fibonacci numbers and their sum
     unsigned long int fib1 = fib(num1);
     unsigned long int fib2 = fib(num2);
     unsigned long int sum = fib1 + fib2;
@@ -42,13 +60,6 @@ int main() {
 
     // Write to stdout
     write(1, output, len);
-    } else {
-        const char *error_msg = "Invalid input. Please enter two numbers separated by '&'. Your input was: ";
-        char output_buffer[2048]; // Buffer to hold the error message and user input
-        int len = snprintf(output_buffer, sizeof(output_buffer), "%s%s\n", error_msg, buffer);
-        write(1, output_buffer, len);
-        return 1;
-    }
 
     return 0;
 }