Jint引擎精品文章

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  cas調用鏈

  ..._CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) UnsafeWrapper(Unsafe_CompareAndSwapInt); oop p = JNIHandles::resolve(obj); jint* addr = (jint *) in...

  sorra 2019-08-16 14:19 評論0 收藏0
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  CAS(compareAndSwap)原理

  ...到節(jié)約內存的目的。 compareAndSwapInt 核心代碼如下 return (jint)(Atomic::cmpxchg(x, addr, e)) == e; compareAndSwapLong 核心代碼如下 if (VM_Version::supports_cx8()) return (jlong)(Atomic::cmpxchg(x, addr, e)) == e; els...

  wyk1184 2019-08-16 14:00 評論0 收藏0
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  CAS也是鎖

  ..._CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) UnsafeWrapper(Unsafe_CompareAndSwapInt); oop p = JNIHandles::resolve(obj); jint* addr = (jint *) in...

  Flands 2019-08-16 18:26 評論0 收藏0
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  Java CAS 原理分析

  ...譯期間會被替換成真正的代碼。下面的 jboolean、jlong 和 jint 等是一些類型定義（typedef）： * * jni.h * typedef unsigned char jboolean; * typedef unsigned short jchar; * typedef short jshort; * ...

  ralap 2019-08-15 17:42 評論0 收藏0
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  Java并發(fā)基礎：了解無鎖CAS就從源碼分析

  ...譯期間會被替換成真正的代碼。下面的 jboolean、jlong 和 jint 等是一些類型定義（typedef）： * * 省略部分內容 */ UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) ...

  toddmark 2019-08-19 10:53 評論0 收藏0
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  Java并發(fā)編程-原子類實現(xiàn)

  ... jboolean sun::misc::Unsafe::compareAndSwapInt (jobject obj, jlong offset,jint expect, jint update) { jint *addr = (jint *)((char *)obj + offset); //1 return compareAndSwap (addr, expect, up...

  gyl_coder 2019-08-16 10:58 評論0 收藏0
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  Java JNI 調用 so 動態(tài)鏈接庫

  ...Class: sf_gg_Hello * Method: add * Signature: (II)I */ JNIEXPORT jint JNICALL Java_sf_gg_Hello_add (JNIEnv *, jclass, jint, jint); #ifdef __cplusplus } #endif #endif 編寫實現(xiàn)add 方法的 C 代碼...

  SegmentFault 2019-08-14 11:50 評論0 收藏0
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  JAVA 中的 CAS

  ...e_CompareAndSetInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) { oop p = JNIHandles::resolve(obj); jint* addr = (jint *)index_oop_from_field_offset_long(p, offset);...

  CocoaChina 2019-08-15 13:59 評論0 收藏0
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  i++ 是線程安全的嗎？

  ..._CompareAndSwapInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) UnsafeWrapper(Unsafe_CompareAndSwapInt); oop p = JNIHandles::resolve(obj); jint* addr = (jint...

  RyanQ 2019-08-16 12:37 評論0 收藏0
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  JAVA JNI 動態(tài)注冊

  ...ve實現(xiàn) 創(chuàng)建Android.mk文件(略) main.c #include #include #include jint getAdd(JNIEnv* env, jobject obj, jint a, jint b) { return (a + b); } static JNINativeMethod g_NativeMethods[] = { {nativeG...

  yunhao 2019-08-14 15:11 評論0 收藏0
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  原理剖析（第 004 篇）CAS工作原理分析

  ... __asm _emit 0xF0 __asm L0: inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { // alternative ...

  leanote 2019-08-15 14:41 評論0 收藏0
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  Android Java 如何調用自己的 c++ 的類庫

  ... app/src/main/cpp/add.cpp，內容如下 #include extern C JNIEXPORT jint JNICALL Java_com_example_liyi_demo_Util_add( JNIEnv *env, jobject, jint a, jint b ) { return a + b; } 被調用的函數(shù)命名必須是 ...

  Fundebug 2019-08-15 15:42 評論0 收藏0