android jni层log打印和方法运行时间打印

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Log 打印

log的定义，需要打印log时候#define __DEBUG__ANDROID__ON ，关闭时候#define __DEBUG__ANDROID__OFF,下面的时间打印同理。

#define __DEBUG__ANDROID__ON
//write debug images
#ifdef  __DEBUG__ANDROID__ON
#include <android/log.h>
// Define the LOGI and others for print debug infomation like the log.i in java
#define LOG_TAG    "lammy -- JNILOG"
//#undef LOG
#define LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG, __VA_ARGS__)
#define LOGD(...)  __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG, __VA_ARGS__)
#define LOGW(...)  __android_log_print(ANDROID_LOG_WARN,LOG_TAG, __VA_ARGS__)
#define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG, __VA_ARGS__)
#define LOGF(...)  __android_log_print(ANDROID_LOG_FATAL,LOG_TAG, __VA_ARGS__)
#else
#ifdef __DEBUG__WIN__ON
#define LOGI(...)  printf( __VA_ARGS__); printf("\n")
#define LOGD(...)  printf( __VA_ARGS__); printf("\n")
#define LOGW(...)  printf( __VA_ARGS__); printf("\n")
#define LOGE(...)  printf( __VA_ARGS__); printf("\n")
#define LOGF(...)  printf( __VA_ARGS__); printf("\n")
#else
#define LOGI(...)   
#define LOGD(...)   
#define LOGW(...)   
#define LOGE(...)   
#define LOGF(...)  
#endif
#endif

调用方式：

LOGE("array.length = %d",env->GetArrayLength(array));

时间打印

#define __DEBUG__TIME__ON
#define  millisecond 1000000
//run times test...
#ifdef  __DEBUG__TIME__ON
#define LOG_TIME  LOGE
#define RUN_TIME(time)  (double)(time).count()/millisecond
//#define RUN_TIME(...)  getTime_MS( __VA_ARGS__)

#define DEBUG__TIME0  auto TIME0= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME1  auto TIME1= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME2  auto TIME2= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME3  auto TIME3= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME4  auto TIME4= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME5  auto TIME5= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME6  auto TIME6= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME7  auto TIME7= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME8  auto TIME8= std::chrono::high_resolution_clock::now()
#define DEBUG__TIME9  auto TIME9= std::chrono::high_resolution_clock::now()

#else
#define DEBUG__TIME0 
#define DEBUG__TIME1
#define DEBUG__TIME2
#define DEBUG__TIME3
#define DEBUG__TIME4
#define DEBUG__TIME5
#define DEBUG__TIME6
#define DEBUG__TIME7
#define DEBUG__TIME8
#define DEBUG__TIME9
#define LOG_TIME(...)  
#endif

调用方法：

    DEBUG__TIME0;

    testMethod();

    DEBUG__TIME1;   
//%4.4f 前面4表示总数字位为4，不满4则右对齐，后面的4表示小数点后保留4位有效数字
    LOG_TIME("Running times:detect facedetect %4.4fms" , RUN_TIME(TIME1 - TIME0));