✨ ADD 异常捕捉机制

24.12/Demo.c

@@ -0,0 +1,37 @@
+#include <jni.h>
+#include <stdio.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <pthread.h>
+#include <unistd.h>
+
+jmp_buf global_exception;
+struct ErrorContext {
+    int code;
+    char msg[256];
+};
+
+void signal_handler(int signum) {
+    longjmp(global_exception, signum);
+}
+JNIEXPORT jint JNICALL Java_Demo_divide
+  (JNIEnv *env, jclass clz, jint a, jint b) {
+    signal(SIGSEGV, signal_handler);
+    struct ErrorContext ctx = {0};
+    // 设置异常捕获点
+    int exception = setjmp(global_exception);
+    if (exception == 0) {
+        int *p = NULL;
+        *p = 10;
+        return 1;
+    } else {
+        // 异常处理
+        ctx.code = exception;
+        snprintf(ctx.msg, sizeof(ctx.msg), 
+                 "Caught signal: %d", exception);
+
+        // 记录日志
+        fprintf(stderr, "Error: %s\n", ctx.msg);
+        return 0;
+    }
+}

24.12/Demo.cpp

@@ -0,0 +1,11 @@
+#include <jni.h>
+#include <stdexcept>
+extern "C" JNIEXPORT jint JNICALL Java_Demo_divide
+  (JNIEnv *env, jclass clz, jint a, jint b) {
+    try {
+        return a /b;
+    } catch (const std::runtime_error &e) {
+        env->ThrowNew(env->FindClass("java/lang/ArithmeticException"), e.what());
+        return 0;
+    }
+}

24.12/Demo.java

@@ -0,0 +1,23 @@
+public class Demo {
+    public static native int divide(int a, int b);
+    public static native String toLowcase(String str);
+    static {
+        System.load("C:\\Users\\sunwu\\Desktop\\base\\gateway\\notebook\\24.12\\demo\\target\\release\\demo.dll");
+
+        // System.load("C:\\Users\\sunwu\\Desktop\\base\\gateway\\notebook\\24.12\\libDemo.dll");
+    }
+    public static void main(String[] args) throws Exception{
+        System.out.println(toLowcase("ABC"));
+        // try {
+        //     Thread thread = new Thread(()-> {
+        //         System.out.println(divide(10, 2));
+        //         System.out.println(divide(10, 0));
+        //     });
+        //     thread.start();
+        // } catch (Throwable t) {
+        //     System.out.println("Error " + t);
+        // }
+        // Thread.sleep(10000L);
+        // System.out.println("finish main");
+    }    
+}