114 lines
2.4 KiB
C++
114 lines
2.4 KiB
C++
/*
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* Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
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*/
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#include <jni.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include "jsynprog.h"
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typedef long long hrtime_t;
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extern "C" {
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hrtime_t gethrtime();
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hrtime_t gethrvtime();
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}
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static jdouble testtime = 3.0 * 1e9;
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int cfunc(int);
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JNIEXPORT jdouble JNICALL
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Java_jsynprog_Timer (JNIEnv *env, jclass obj)
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{
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jdouble jd;
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hrtime_t start;
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start = gethrtime();
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jd = (double)(start);
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return jd;
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}
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JNIEXPORT jdouble JNICALL
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Java_jsynprog_cTimer (JNIEnv *env, jclass obj)
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{
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jdouble jd;
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hrtime_t vstart;
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vstart = gethrvtime();
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jd = (double)(vstart);
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return jd;
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}
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JNIEXPORT jdouble JNICALL
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Java_jsynprog_computeSet (JNIEnv *env, jclass obj)
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{
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char *s;
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testtime = 3.0;
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s = getenv("SP_COLLECTOR_TEST_TIMER");
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if( s ) {
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testtime = atof(s);
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if (testtime < 1.0)
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testtime = 1.0;
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}
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testtime *= 1e9;
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return testtime;
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}
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JNIEXPORT jint JNICALL
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Java_jsynprog_JavaJavaC (JNIEnv *env, jclass obj, jint n, int scale )
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{
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// fprintf(stderr, "Entering Java_jsynprog_JavaJavaC, scale = %d\n", scale);
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int imax = 100000;
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n = 0;
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for (int i =0; i<imax; i++) {
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n=n+((i%2==0)?1:2);
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}
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return n;
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}
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JNIEXPORT void JNICALL
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Java_jsynprog_JavaCC (JNIEnv *env, jclass obj, int scale)
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{
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fprintf(stderr, "Entering Java_jsynprog_JavaCC, scale = %d\n", scale);
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int n =0;
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if (scale == 1) {
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scale *= 1000;
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}
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int imax = 4*scale;
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double tEnd = gethrtime() + testtime;
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do { n = 0;
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for (int i =0; i<imax; i++) {
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n = cfunc(n);
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}
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} while (gethrtime() < tEnd);
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}
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int cfunc (int n) {
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for (int j =0; j<100000;j++) {
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n=n+1;
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}
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return n;
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}
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JNIEXPORT void JNICALL
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Java_jsynprog_JavaCJava (JNIEnv *env, jclass obj, int scale)
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{
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fprintf(stderr, "Entering Java_jsynprog_JavaCJava, scale = %d\n", scale);
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int pnum = 0;
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jmethodID mid = (env)->GetStaticMethodID(obj, "javafunc", "(I)I");
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if (mid == 0) {
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fprintf(stderr, "Can't get jmethodID for \"javafunc\", \"(I)I\"\n");
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return;
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}
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fprintf(stderr, "Calling CallStaticIntMethod, scale = %d\n", scale);
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pnum = (env)->CallStaticIntMethod(obj, mid, scale);
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}
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JNIEXPORT jint JNICALL
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Java_jsynprog_isJVMPI (JNIEnv *env, jclass obj)
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{
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char *jvmpi = getenv("SP_COLLECTOR_USE_JVMPI");
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return jvmpi ? 1 : 0;
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}
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