java-SIGSEGV-Android-JNI-empty方法
我遇到了非常奇怪的问题,我不知道出了什么问题,因为我已经注释掉了所有内容,但它仍然崩溃
这是我的密码
Java部分
package net.example.library.arrayprocessor;
public class ArrayProcessor {
static {
System.loadLibrary("array-processor");
}
public ArrayProcessor() {
}
public native short[] process(short[] readBuffer);
}
我这样称呼它
buffer = arrayProcessor.process(buffer);
JNI部分 CMAke
# Cmake Minimum Version
cmake_minimum_required(VERSION 3.4.1)
add_library(array-processor SHARED
processor.cpp)
# Link
target_link_libraries(
array-processor
安卓
log)
处理器。cpp
#include <jni.h>
#include <stdio.h>
#define LOGI(...) \
((void)__安卓_log_print(ANDROID_LOG_INFO, "VoiceProcessor::", __VA_ARGS__))
extern "C" {
JNIEXPORT jshortArray JNICALL
Java_net_example_library_arrayprocessor_ArrayProcessor_processor(
JNIEnv *env, jobject instance, jshortArray readBuffer_);
}
JNIEXPORT jshortArray JNICALL
Java_net_example_library_arrayprocessor_ArrayProcessor_processor(
JNIEnv *env, jobject instance, jshortArray readBuffer_) {
/* get size of the array */
jsize len = env->GetArrayLength(readBuffer_);
/* get the body of array; it will be referecende by C pointer */
jshort *body = env->GetShortArrayElements(readBuffer_, 0);
/* do some stuff */
for (int i = 0; i < len; i++) {
printf("Short value: %hd\n", body[i]);
/* update value */
body[i] = 0;
}
/* release body when you decide it is no longer needed
Pass changes back to Java */
env->ReleaseShortArrayElements(readBuffer_, body, JNI_COMMIT);
}
但当我试图调用它时,它会抛出一个错误
A/libc: Fatal signal 11 (SIGSEGV) at 0xc0c5a8f7 (code=1), thread 19335 (pool-3-thread-1)
我试图注释掉方法的主体,但仍然是相同的错误
A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x6 in tid 3749 (pool-4-thread-1)
我的代码可能有什么问题?如何解决和调试这些问题
如果有任何帮助,我将不胜感激
# 1 楼答案
您没有返回值。您可以返回
readBuffer_
,但如果该方法只需要修改输入数组,则根本不需要返回值。它可以声明为void
C编译器至少应该警告过你这一点。不要忽视警告,也不要关闭它们。JNI代码必须非常干净