/*
* Copyright ( c ) 2008 , 2020 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation . Oracle designates this
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include <errno.h>
#include <string.h>
#include "jvm.h"
#include "jni.h"
#include "jni_util.h"
#include "dlfcn.h"
#if defined (LINUX) && (defined (_GNU_SOURCE) || \
(defined (_POSIX_C_SOURCE) && _POSIX_C_SOURCE < 200112 L \
&& defined (_XOPEN_SOURCE) && _XOPEN_SOURCE < 600 ))
extern int __xpg_strerror_r(int , char *, size_t);
#define strerror_r(a, b, c) __xpg_strerror_r((a), (b), (c))
#endif
void * getProcessHandle() {
static void *procHandle = NULL;
if (procHandle != NULL) {
return procHandle;
}
#ifdef __APPLE__
procHandle = (void *)dlopen(NULL, RTLD_FIRST);
#else
procHandle = (void *)dlopen(NULL, RTLD_LAZY);
#endif
return procHandle;
}
void buildJniFunctionName(const char *sym, const char *cname,
char *jniEntryName) {
strcpy(jniEntryName, sym);
if (cname != NULL) {
strcat(jniEntryName, "_" );
strcat(jniEntryName, cname);
}
}
JNIEXPORT size_t JNICALL
getLastErrorString(char *buf, size_t len)
{
if (errno == 0 || len < 1 ) return 0 ;
getErrorString(errno, buf, len);
return strlen(buf);
}
JNIEXPORT int JNICALL
getErrorString(int err, char *buf, size_t len)
{
if (err == 0 || len < 1 ) return 0 ;
return strerror_r(err, buf, len);
}
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