зеркало из https://github.com/mozilla/pjs.git
354 строки
9.8 KiB
C
354 строки
9.8 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Sun Microsystems, Inc.
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* Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
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*
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* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
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* modify and redistribute this software in source and binary code form,
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* provided that i) this copyright notice and license appear on all copies of
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* the software; and ii) Licensee does not utilize the software in a manner
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* which is disparaging to Sun.
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*
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* This software is provided "AS IS," without a warranty of any kind. ALL
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* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
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* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
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* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
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* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
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* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
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* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
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* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
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* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
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* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* This software is not designed or intended for use in on-line control of
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* aircraft, air traffic, aircraft navigation or aircraft communications; or in
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* the design, construction, operation or maintenance of any nuclear
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* facility. Licensee represents and warrants that it will not use or
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* redistribute the Software for such purposes.
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*/
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/*
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* Code to start a Java VM (*some* code from the JRE)
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*/
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#include "jsdj.h"
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/***************************************************************************/
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#ifdef JSD_STANDALONE_JAVA_VM
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#include "jre.h"
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static char* more_classpath[] =
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{
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{"..\\..\\jsdj\\dist\\classes"},
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{"..\\..\\jsdj\\dist\\classes\\ifc11.jar"},
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/*
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* {"..\\..\\..\\jsdj\\dist\\classes"},
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* {"..\\..\\..\\jsdj\\dist\\classes\\ifc12.jar"},
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*/
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/*
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* {"..\\..\\samples\\jslogger"},
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* {"classes"},
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* {"ifc12.jar"},
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* {"jsd10.jar"},
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* {"jsdeb15.jar"}
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*/
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};
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#define MORE_CLASSPATH_COUNT (sizeof(more_classpath)/sizeof(more_classpath[0]))
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/*
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* static char main_class[] = "callnative";
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* static char main_class[] = "simpleIFC";
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* static char* params[] = {"16 Dec 1997"};
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* #define PARAM_COUNT (sizeof(params)/sizeof(params[0]))
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*/
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/*
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* static char main_class[] = "netscape/jslogger/JSLogger";
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* static char main_class[] = "LaunchJSDebugger";
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*/
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static char main_class[] = "com/netscape/jsdebugging/ifcui/launcher/local/LaunchJSDebugger";
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static char* params[] = {NULL};
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#define PARAM_COUNT 0
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/* Globals */
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static char **props; /* User-defined properties */
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static int numProps, maxProps; /* Current, max number of properties */
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static void *handle;
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static JavaVM *jvm;
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static JNIEnv *env;
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/* Check for null value and return */
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#define NULL_CHECK(e) if ((e) == 0) return 0
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/*
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* Adds a user-defined system property definition.
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*/
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void AddProperty(char *def)
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{
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if (numProps >= maxProps) {
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if (props == 0) {
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maxProps = 4;
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props = JRE_Malloc(maxProps * sizeof(char **));
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} else {
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char **tmp;
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maxProps *= 2;
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tmp = JRE_Malloc(maxProps * sizeof(char **));
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memcpy(tmp, props, numProps * sizeof(char **));
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free(props);
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props = tmp;
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}
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}
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props[numProps++] = def;
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}
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/*
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* Deletes a property definition by name.
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*/
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void DeleteProperty(const char *name)
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{
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int i;
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for (i = 0; i < numProps; ) {
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char *def = props[i];
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char *c = strchr(def, '=');
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int n;
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if (c != 0) {
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n = c - def;
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} else {
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n = strlen(def);
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}
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if (strncmp(name, def, n) == 0) {
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if (i < --numProps) {
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memmove(&props[i], &props[i+1], (numProps-i) * sizeof(char **));
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}
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} else {
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i++;
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}
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}
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}
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/*
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* Creates an array of Java string objects from the specified array of C
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* strings. Returns 0 if the array could not be created.
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*/
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jarray NewStringArray(JNIEnv *env, char **cpp, int count)
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{
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jclass cls;
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jarray ary;
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int i;
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NULL_CHECK(cls = (*env)->FindClass(env, "java/lang/String"));
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NULL_CHECK(ary = (*env)->NewObjectArray(env, count, cls, 0));
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for (i = 0; i < count; i++) {
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jstring str = (*env)->NewStringUTF(env, *cpp++);
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NULL_CHECK(str);
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(*env)->SetObjectArrayElement(env, ary, i, str);
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(*env)->DeleteLocalRef(env, str);
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}
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return ary;
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}
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/***************************************************************************/
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static JNIEnv*
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_CreateJavaVM(void)
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{
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JNIEnv* env = NULL;
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JDK1_1InitArgs vmargs;
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JRESettings set;
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printf("Starting Java...\n");
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if(JRE_GetCurrentSettings(&set) != 0)
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{
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if(JRE_GetDefaultSettings(&set) != 0)
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{
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fprintf(stderr, "Could not locate Java runtime\n");
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return NULL;
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}
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}
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/* Load runtime library */
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handle = JRE_LoadLibrary(set.runtimeLib);
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if (handle == 0) {
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fprintf(stderr, "Could not load runtime library: %s\n",
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set.runtimeLib);
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return NULL;
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}
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/* Add pre-defined system properties */
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if (set.javaHome != 0) {
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char *def = JRE_Malloc(strlen(set.javaHome) + 16);
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sprintf(def, "java.home=%s", set.javaHome);
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AddProperty(def);
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}
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if (set.compiler != 0) {
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char *def = JRE_Malloc(strlen(set.compiler) + 16);
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sprintf(def, "java.compiler=%s", set.compiler);
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AddProperty(def);
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}
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/*
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* The following is used to specify that we require at least
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* JNI version 1.1. Currently, this field is not checked but
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* will be starting with JDK/JRE 1.2. The value returned after
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* calling JNI_GetDefaultJavaVMInitArgs() is the actual JNI version
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* supported, and is always higher that the requested version.
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*/
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vmargs.version = 0x00010001;
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if (JRE_GetDefaultJavaVMInitArgs(handle, &vmargs) != 0) {
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fprintf(stderr, "Could not initialize Java VM\n");
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return NULL;
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}
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/* Tack on our classpath */
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if(MORE_CLASSPATH_COUNT)
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{
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int i;
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int size = strlen(set.classPath) + 1;
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char sep[2];
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sep[0] = PATH_SEPARATOR;
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sep[1] = 0;
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for(i = 0; i < MORE_CLASSPATH_COUNT; i++)
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size += strlen(more_classpath[i]) + 1;
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vmargs.classpath = malloc(size);
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if(vmargs.classpath == 0)
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{
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fprintf(stderr, "malloc error\n");
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return NULL;
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}
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strcpy(vmargs.classpath, set.classPath);
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for(i = 0; i < MORE_CLASSPATH_COUNT; i++)
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{
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strcat(vmargs.classpath, sep);
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strcat(vmargs.classpath, more_classpath[i]);
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}
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}
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else
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{
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vmargs.classpath = set.classPath;
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}
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/*
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* fprintf(stderr, "classpath: %s\n", vmargs.classpath);
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*/
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/* Set user-defined system properties for Java VM */
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if (props != 0) {
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if (numProps == maxProps) {
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char **tmp = JRE_Malloc((numProps + 1) * sizeof(char **));
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memcpy(tmp, props, numProps * sizeof(char **));
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free(props);
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props = tmp;
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}
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props[numProps] = 0;
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vmargs.properties = props;
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}
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/* verbose? */
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/*
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* vmargs.verbose = JNI_TRUE;
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*/
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/* Load and initialize Java VM */
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if (JRE_CreateJavaVM(handle, &jvm, &env, &vmargs) != 0) {
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fprintf(stderr, "Could not create Java VM\n");
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return NULL;
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}
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/* Free properties */
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if (props != 0) {
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free(props);
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}
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return env;
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}
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static JSBool
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_StartDebuggerFE(JNIEnv* env)
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{
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jclass clazz;
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jmethodID mid;
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jarray args;
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/* Find class */
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clazz = (*env)->FindClass(env, main_class);
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if (clazz == 0) {
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fprintf(stderr, "Class not found: %s\n", main_class);
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return JS_FALSE;
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}
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/* Find main method of class */
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mid = (*env)->GetStaticMethodID(env, clazz, "main",
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"([Ljava/lang/String;)V");
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if (mid == 0) {
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fprintf(stderr, "In class %s: public static void main(String args[])"
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" is not defined\n");
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return JS_FALSE;
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}
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/* Invoke main method */
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args = NewStringArray(env, params, PARAM_COUNT);
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if (args == 0) {
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JRE_FatalError(env, "Couldn't build argument list for main\n");
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}
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(*env)->CallStaticVoidMethod(env, clazz, mid, args);
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if ((*env)->ExceptionOccurred(env)) {
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(*env)->ExceptionDescribe(env);
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}
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return JS_TRUE;
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}
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JNIEnv*
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jsdj_CreateJavaVMAndStartDebugger(JSDJContext* jsdjc)
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{
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JNIEnv* env = NULL;
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env = _CreateJavaVM();
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if( ! env )
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return NULL;
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jsdj_SetJNIEnvForCurrentThread(jsdjc, env);
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if( ! jsdj_RegisterNatives(jsdjc) )
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return NULL;
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if( ! _StartDebuggerFE(env) )
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return NULL;
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return env;
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}
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#endif /* JSD_STANDALONE_JAVA_VM */
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/***************************************************************************/
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