Update app.py

app.py

@@ -447,8 +447,6 @@ class CodeExecutor:
 
         return self._combine_results(results, main_files)
 
-# Thay thế method _execute_java trong CodeExecutor class
-
     async def _execute_java(
         self,
         main_files: List[str],
@@ -461,25 +459,28 @@ class CodeExecutor:
         java_files = list(Path(workspace).glob("*.java"))
         needs_compilation = len(java_files) > 0
     
-        # JVM options for container environment
+        # JVM options for very limited container environment (HuggingFace)
         jvm_opts = [
-            "-Xms16m",           # Initial heap size
-            "-Xmx128m",          # Maximum heap size
-            "-XX:ReservedCodeCacheSize=16m",  # Code cache size
-            "-XX:InitialCodeCacheSize=2m",    # Initial code cache
-            "-XX:+UseSerialGC",              # Simple GC for small apps
-            "-XX:+TieredCompilation",        # Enable tiered compilation
-            "-XX:TieredStopAtLevel=1",       # Stop at level 1 (faster startup)
-            "-XX:+UseStringDeduplication",   # Save memory on strings
-            "-XX:MaxRAMPercentage=10.0",     # Limit RAM usage to 10% of container
+            "-Xms8m",                        # Minimal initial heap
+            "-Xmx64m",                       # Very small max heap
+            "-XX:ReservedCodeCacheSize=8m",  # Minimal code cache
+            "-XX:InitialCodeCacheSize=1m",   # Tiny initial code cache
+            "-XX:+UseSerialGC",              # Simple GC
+            "-XX:NewRatio=3",                # Small young generation
+            "-XX:SurvivorRatio=4",           # Optimize survivor space
+            "-XX:MaxMetaspaceSize=32m",      # Limit metaspace
+            "-XX:CompressedClassSpaceSize=8m", # Compress class space
+            "-Xss256k",                      # Small stack size
+            "-XX:-TieredCompilation",        # Disable tiered compilation to save memory
+            "-Djava.awt.headless=true",      # Headless mode
         ]
     
         # If we have .java files, compile them
         if needs_compilation:
             logger.info(f"Found {len(java_files)} Java source files, compiling...")
     
-            # Compile with memory-optimized javac
-            compile_cmd = ["javac", "-J-Xmx64m"] + [str(f) for f in java_files]
+            # Compile with minimal memory for javac
+            compile_cmd = ["javac", "-J-Xmx32m", "-J-Xms8m"] + [str(f) for f in java_files]
             
             compile_process = await asyncio.create_subprocess_exec(
                 *compile_cmd,