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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) INRIA - Allan CORNET
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
*
*/
/*--------------------------------------------------------------------------*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "dynamiclibrary.h"
#include "JVM.h"
#include "JVM_functions.h"
#include "MALLOC.h"
#include "getScilabJavaVM.h"
#include "getScilabJNIEnv.h"
#include "fromjava.h"
#include "localization.h"
#include "getJvmOptions.h"
/*--------------------------------------------------------------------------*/
static JavaVM *jvm_SCILAB = NULL;
/*--------------------------------------------------------------------------*/
static BOOL HadAlreadyJavaVm = FALSE;
/*--------------------------------------------------------------------------*/
static JavaVMOption *jvm_options = NULL;
static int nOptions = 0;
/*--------------------------------------------------------------------------*/
static void freeJavaVMOption(void)
{
if (jvm_options)
{
int j = 0;
for (j = 0; j < nOptions; j++)
{
if (jvm_options[j].optionString)
{
FREE(jvm_options[j].optionString);
jvm_options[j].optionString = NULL;
}
}
nOptions = 0;
}
}
/*--------------------------------------------------------------------------*/
JavaVM *getScilabJavaVM(void)
{
if (!jvm_SCILAB && IsFromJava())
{
/* If getScilabJavaVM is called from C called itself from JavaSci
* (in nwni mode) the function returns a JVM */
JavaVM *vm = 0;
JavaVM **vmBuf = MALLOC(sizeof(JavaVM *) * 1);
jsize size = 0;
if (!hasJvmSymbolsLoaded())
{
/* We load symbols of the current jvm already used */
LoadFunctionsJVM(NULL);
}
SciJNI_GetCreatedJavaVMs(vmBuf, 1, &size);
if (size)
{
vm = *vmBuf;
}
FREE(vmBuf);
return vm;
}
return jvm_SCILAB;
}
/*--------------------------------------------------------------------------*/
JNIEnv *getScilabJNIEnv(void)
{
JNIEnv *JNIEnv_SCILAB = NULL;
jint res = 0;
if (jvm_SCILAB)
{
#ifdef JNI_VERSION_1_6
res = (*jvm_SCILAB)->GetEnv(jvm_SCILAB, (void **)&JNIEnv_SCILAB, JNI_VERSION_1_6);
#elif JNI_VERSION_1_4
res = (*jvm_SCILAB)->GetEnv(jvm_SCILAB, (void **)&JNIEnv_SCILAB, JNI_VERSION_1_4);
#endif
if (res == JNI_ERR)
{
#ifdef _MSC_VER
MessageBox(NULL, gettext("\nError: Cannot return Scilab Java environment (JNIEnv_SCILAB).\n"), gettext("Error"),
MB_ICONEXCLAMATION | MB_OK);
#else
fprintf(stderr, _("\nError: Cannot return Scilab Java environment (JNIEnv_SCILAB).\n"));
#endif
return NULL;
}
if (res == JNI_EDETACHED)
{
(*jvm_SCILAB)->AttachCurrentThread(jvm_SCILAB, (void **)&JNIEnv_SCILAB, NULL);
}
}
else
{
#ifdef _MSC_VER
MessageBox(NULL,
gettext
("\nError: Cannot return Scilab Java environment (jvm_SCILAB): check if the JVM has been loaded by Scilab before calling this function.\n"),
gettext("Error"), MB_ICONEXCLAMATION | MB_OK);
#else
fprintf(stderr,
_
("\nError: Cannot return Scilab Java environment (jvm_SCILAB): check if the JVM has been loaded by Scilab before calling this function.\n"));
#endif
}
return JNIEnv_SCILAB;
}
/*--------------------------------------------------------------------------*/
BOOL startJVM(char *SCI_PATH)
{
JNIEnv *env = NULL;
JavaVM *ptr_jvm = NULL;
jint res = 0;
if (IsFromJava())
{
ptr_jvm = FindCreatedJavaVM(SCI_PATH);
if (ptr_jvm) /* a jvm already exists in scilab process */
{
HadAlreadyJavaVm = TRUE;
jvm_SCILAB = ptr_jvm;
env = getScilabJNIEnv();
}
else
{
fprintf(stderr, _("\nWeird error. Calling from Java but haven't been able to find the already existing JVM.\n"));
FreeDynLibJVM();
return FALSE;
}
}
else
{
if (!LoadDynLibJVM(SCI_PATH))
{
fprintf(stderr, _("\nCould not load JVM dynamic library (libjava).\n"));
fprintf(stderr, _("Error: %s\n"), GetLastDynLibError());
fprintf(stderr, _("If you are using a binary version of Scilab, please report a bug http://bugzilla.scilab.org/.\n"));
fprintf(stderr, _("If you are using a self-built version of Scilab, update the script bin/scilab to provide the path to the JVM.\n"));
fprintf(stderr, _("The problem might be related to SELinux. Try to deactivate it.\n"));
fprintf(stderr, _("Please also check that you are not trying to run Scilab 64 bits on a 32 bits system (or vice versa).\n"));
return FALSE;
}
else
{
/**
* http://java.sun.com/javase/6/docs/technotes/guides/jni/spec/invocation.html#wp15956
*/
#define JVM_OPTIONS_FILENAME_FORMAT "%s/etc/jvm_options.xml"
char *jvm_options_filename = NULL;
long status = 0;
JavaVMInitArgs vm_args;
jvm_options_filename = (char *)MALLOC(sizeof(char) * ((int)strlen(JVM_OPTIONS_FILENAME_FORMAT) + (int)strlen(SCI_PATH) + 1));
sprintf(jvm_options_filename, JVM_OPTIONS_FILENAME_FORMAT, SCI_PATH);
jvm_options = getJvmOptions(SCI_PATH, jvm_options_filename, &nOptions);
if ((jvm_options == NULL) || (nOptions == 0))
{
#ifdef _MSC_VER
{
#define FORMAT_MSG "\nImpossible to read %s.\n"
char *msg = (char *)MALLOC(sizeof(char) * ((int)strlen(_(FORMAT_MSG)) + (int)strlen(jvm_options_filename) + 1));
if (msg)
{
sprintf(msg, _(FORMAT_MSG), jvm_options_filename);
MessageBox(NULL, msg, gettext("Error"), MB_ICONEXCLAMATION | MB_OK);
FREE(msg);
msg = NULL;
}
}
#else
fprintf(stderr, _("\nImpossible to read %s.\n"), jvm_options_filename);
#endif
if (jvm_options_filename)
{
FREE(jvm_options_filename);
jvm_options_filename = NULL;
}
exit(1);
}
else
{
if (jvm_options_filename)
{
FREE(jvm_options_filename);
jvm_options_filename = NULL;
}
HadAlreadyJavaVm = FALSE;
memset(&vm_args, 0, sizeof(vm_args));
SciJNI_GetDefaultJavaVMInitArgs(&vm_args);
#ifdef JNI_VERSION_1_6
vm_args.version = JNI_VERSION_1_6;
#elif JNI_VERSION_1_4
vm_args.version = JNI_VERSION_1_4;
#else
#ifdef _MSC_VER
MessageBox(NULL, gettext("\nIncorrect version JNI (needs at least JDK 1.4).\n"), gettext("Error"), MB_ICONEXCLAMATION | MB_OK);
#else
fprintf(stderr, gettext("\nIncorrect version JNI (needs at least JDK 1.4).\n"));
#endif
exit(1);
#endif
vm_args.options = jvm_options;
vm_args.nOptions = nOptions;
vm_args.ignoreUnrecognized = FALSE;
status = SciJNI_CreateJavaVM(&jvm_SCILAB, (JNIEnv **) & env, &vm_args);
if (status != JNI_OK)
{
fprintf(stderr, _("Error in the creation of the Java VM: %s\n"), getJniErrorFromStatusCode(status));
FreeDynLibJVM();
if (vm_args.options)
{
int j = 0;
fprintf(stderr, _("Options:\n"));
for (j = 0; j < vm_args.nOptions; j++)
{
fprintf(stderr, "%d: %s\n", j, vm_args.options[j]);
}
}
return FALSE;
}
}
}
}
res = (*jvm_SCILAB)->AttachCurrentThread(jvm_SCILAB, (void **)&env, (void *)NULL);
if (res != 0)
{
#ifdef _MSC_VER
MessageBox(NULL, gettext("\nJVM error in AttachCurrentThread: Could not attach to the current thread.\n"), gettext("Error"),
MB_ICONEXCLAMATION | MB_OK);
#else
fprintf(stderr, gettext("\nJVM error in AttachCurrentThread: Could not attach to the current thread.\n"));
#endif
FreeDynLibJVM();
freeJavaVMOption();
return FALSE;
}
else
{
return TRUE;
}
}
/*--------------------------------------------------------------------------*/
BOOL finishJVM(void)
{
BOOL bOK = FALSE;
if (jvm_SCILAB)
{
// Detach the shared thread, to let the JVM finish itself
(*jvm_SCILAB)->DetachCurrentThread(jvm_SCILAB);
// force destroy the JVM (commented due to the javasci case)
// (*jvm_SCILAB)->DestroyJavaVM(jvm_SCILAB);
}
if (FreeDynLibJVM())
{
jvm_SCILAB = NULL;
bOK = TRUE;
}
freeJavaVMOption();
return bOK;
}
/*--------------------------------------------------------------------------*/
BOOL isItTheDisabledLib(void)
{
return FALSE;
}
/*--------------------------------------------------------------------------*/
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