android開發：jni下native代碼擷取毫秒級時間

標籤：

#include <android/log.h>#define LOG_TAG ""#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__)struct timeval xTime;int xRet = gettimeofday(&xTime, NULL);long long xFactor = 1;long long now = (long long)(( xFactor * xTime.tv_sec * 1000) + (xTime.tv_usec / 1000));LOGD("sec_d = %d, sec_ld = %ld, sec_lld = %lld\n", xTime.tv_sec, xTime.tv_sec, xTime.tv_sec);LOGD("usec_d = %d, usec_ld = %ld, usec_lld = %lld\n", xTime.tv_usec, xTime.tv_usec, xTime.tv_usec);LOGD("now_d = %d, now_ld = %ld, now_ld = %lld\n", now, now, now);LOGD("sizeof(int) = %d\n", sizeof(int));LOGD("sizeof(long) = %d\n", sizeof(long));LOGD("sizeof(long long) = %d\n", sizeof(long long));

輸出為：

sec_d = 1327656212, sec_ld = 1327656212, sec_lld = 1327656212666usec_d = 838745, usec_ld = 838745, usec_lld = 1327656212666now_d = 338605759, now_ld = 511318374, now_ld = 1327656212838 （正確結果）

sizeof(int) = 4sizeof(long) = 4sizeof(long long) = 8

 

 

android開發：jni下native代碼擷取毫秒級時間