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Let's use one copy of this identical code

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git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@102 ed5b42cb-e716-0410-a449-f6a68f950b19
This commit is contained in:
Landon Fuller
2006-12-19 19:46:10 +00:00
parent f91aaf6ba1
commit fc284c2e58
1 changed files with 1 additions and 97 deletions
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src/java/com/threerings/util/unsafe/Linux/com_threerings_util_unsafe_Unsafe.c
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/*
* $Id: com_threerings_util_unsafe_Unsafe.c 3653 2005-07-21 19:10:08Z mdb $
*/
#include <stdio.h>
#include <jni.h>
#include <jvmpi.h>
#include <errno.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include "com_threerings_util_unsafe_Unsafe.h"
/* global jvmpi interface pointer */
static JVMPI_Interface* jvmpi;
/** A sleep method that uses select(). This seems to have about 10ms
* granularity where nanosleep() has about 20ms. Sigh. */
static int select_sleep (int millisecs)
{
fd_set dummy;
struct timeval toWait;
FD_ZERO(&dummy);
toWait.tv_sec = millisecs / 1000;
toWait.tv_usec = (millisecs % 1000) * 1000;
return select(0, &dummy, NULL, NULL, &toWait);
}
JNIEXPORT void JNICALL
Java_com_threerings_util_unsafe_Unsafe_enableGC (JNIEnv* env, jclass clazz)
{
jvmpi->EnableGC();
}
JNIEXPORT void JNICALL
Java_com_threerings_util_unsafe_Unsafe_disableGC (JNIEnv* env, jclass clazz)
{
jvmpi->DisableGC();
}
JNIEXPORT void JNICALL
Java_com_threerings_util_unsafe_Unsafe_nativeSleep (
JNIEnv* env, jclass clazz, jint millis)
{
/* struct timespec tmspec; */
/* tmspec.tv_sec = millis/1000; */
/* tmspec.tv_nsec = (millis%1000)*1000000; */
/* if (nanosleep(&tmspec, NULL) < 0) { */
/* fprintf(stderr, "nanosleep() failed: %s\n", strerror(errno)); */
/* } */
if (select_sleep(millis) < 0) {
fprintf(stderr, "select_sleep() failed: %s\n", strerror(errno));
}
}
JNIEXPORT jboolean JNICALL
Java_com_threerings_util_unsafe_Unsafe_nativeSetuid (
JNIEnv* env, jclass clazz, jint uid)
{
if (setuid((uid_t)uid) != 0) {
fprintf(stderr, "setuid(%d) failed: %s\n", uid, strerror(errno));
return JNI_FALSE;
}
return JNI_TRUE;
}
JNIEXPORT jboolean JNICALL
Java_com_threerings_util_unsafe_Unsafe_nativeSetgid (
JNIEnv* env, jclass clazz, jint gid)
{
if (setgid((gid_t)gid) != 0) {
fprintf(stderr, "setgid(%d) failed: %s\n", gid, strerror(errno));
return JNI_FALSE;
}
return JNI_TRUE;
}
JNIEXPORT jboolean JNICALL
Java_com_threerings_util_unsafe_Unsafe_init (JNIEnv* env, jclass clazz)
{
JavaVM* jvm;
if ((*env)->GetJavaVM(env, &jvm) > 0) {
fprintf(stderr, "Failed to get JavaVM from env.\n");
return JNI_FALSE;
}
/* get jvmpi interface pointer */
if (((*jvm)->GetEnv(jvm, (void**)&jvmpi, JVMPI_VERSION_1)) < 0) {
fprintf(stderr, "Failed to get JVMPI from JavaVM.\n");
return JNI_FALSE;
}
return JNI_TRUE;
}
src/java/com/threerings/util/unsafe/Linux/com_threerings_util_unsafe_Unsafe.c
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../FreeBSD/com_threerings_util_unsafe_Unsafe.c