112 lines
2.4 KiB
C++
112 lines
2.4 KiB
C++
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/*
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* org_lwjgl_Sys.cpp
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*
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* Win32 specific library
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*
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* (C) 2002 Shaven Puppy Ltd
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*
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* Created 10 August 2002 by foo
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*
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*/
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#include <windows.h>
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#include "org_lwjgl_Sys.h"
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__int64 hires_timer_freq; // Hires timer frequency
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__int64 hires_timer_start; // Hires timer start
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__int64 hires_timer; // Hires timer current time
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/*
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* Class: org_lwjgl_Sys
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* Method: getDirectBufferAddress
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* Signature: (Ljava/nio/Buffer;)I
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*/
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JNIEXPORT jint JNICALL Java_org_lwjgl_Sys_getDirectBufferAddress
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(JNIEnv * env, jclass clazz, jobject buf)
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{
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return (jint) env->GetDirectBufferAddress(buf);
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}
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/*
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* Class: org_lwjgl_Sys
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* Method: createDirectBuffer
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* Signature: (II)Ljava/nio/ByteBuffer;
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*/
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JNIEXPORT jobject JNICALL Java_org_lwjgl_Sys_createDirectBuffer
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(JNIEnv * env, jclass clazz, jint address, jint length)
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{
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return env->NewDirectByteBuffer((void *)address, length);
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}
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/*
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* Class: org_lwjgl_Sys
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* Method: getTimerResolution
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* Signature: ()J
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*/
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JNIEXPORT jlong JNICALL Java_org_lwjgl_Sys_getTimerResolution
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(JNIEnv * env, jclass clazz)
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{
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return hires_timer_freq;
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}
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/*
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* Class: org_lwjgl_Sys
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* Method: getTime
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* Signature: ()J
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*/
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JNIEXPORT jlong JNICALL Java_org_lwjgl_Sys_getTime
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(JNIEnv * env, jclass clazz)
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{
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QueryPerformanceCounter((LARGE_INTEGER*) &hires_timer);
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hires_timer -= hires_timer_start;
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return hires_timer;
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}
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/*
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* Class: org_lwjgl_Sys
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* Method: setTime
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* Signature: (J)V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_Sys_setTime
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(JNIEnv * env, jclass clazz, jlong startTime)
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{
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QueryPerformanceFrequency((LARGE_INTEGER*) &hires_timer_freq);
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QueryPerformanceCounter((LARGE_INTEGER*) &hires_timer_start);
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hires_timer_start -= startTime;
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}
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/*
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* Class: org_lwjgl_Sys
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* Method: setProcessPriority
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* Signature: (I)V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_Sys_setProcessPriority
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(JNIEnv * env, jclass clazz, jint priority)
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{
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HANDLE me = GetCurrentProcess();
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int win32priority;
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switch (priority) {
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case org_lwjgl_Sys_REALTIME_PRIORITY:
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win32priority = REALTIME_PRIORITY_CLASS;
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break;
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case org_lwjgl_Sys_HIGH_PRIORITY:
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win32priority = HIGH_PRIORITY_CLASS;
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break;
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case org_lwjgl_Sys_NORMAL_PRIORITY:
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win32priority = NORMAL_PRIORITY_CLASS;
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break;
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case org_lwjgl_Sys_LOW_PRIORITY:
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win32priority = IDLE_PRIORITY_CLASS;
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break;
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default:
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return;
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}
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if (!SetPriorityClass(me, win32priority)) {
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#ifdef _DEBUG
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printf("Failed to set priority class.\n");
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#endif
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}
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}
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