1 /*
2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "Platform.h"
27 #include "PlatformString.h"
28 #include "FilePath.h"
29 #include "PropertyFile.h"
30 #include "JavaVirtualMachine.h"
31 #include "Package.h"
32 #include "PlatformThread.h"
33 #include "Macros.h"
34 #include "Messages.h"
35
36
37 #ifdef WINDOWS
38 #include <Shellapi.h>
39 #endif
40
41
42 #include <stdio.h>
43 #include <signal.h>
44 #include <stdlib.h>
45
46 /*
47 This is the launcher program for application packaging on Windows, Mac,
48 and Linux.
49
50 Basic approach:
51 - Launcher executable loads jpackager.dll/libjpackager.dylib/libjpackager.so
52 and calls start_launcher below.
53 - Reads app/package.cfg or Info.plist or app/<appname>.cfg for application
54 launch configuration (package.cfg is property file).
55 - Load JVM with requested JVM settings (bundled client JVM if availble,
56 server or installed JVM otherwise).
57 - Wait for JVM to exit and then exit from Main
58 - To debug application by passing command line argument.
59 - Application folder is added to the library path (so LoadLibrary()) works.
60
61 Limitations and future work:
62 - Running Java code in primordial thread may cause problems
63 (example: can not use custom stack size).
64 Solution used by java launcher is to create a new thread to invoke JVM.
65 See CR 6316197 for more information.
66 */
67
68 extern "C" {
69
70 #ifdef WINDOWS
71 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
72 LPVOID lpvReserved) {
73 return true;
74 }
75 #endif //WINDOWS
76
77 JNIEXPORT bool start_launcher(int argc, TCHAR* argv[]) {
78 bool result = false;
79 bool parentProcess = true;
80
81 // Platform must be initialize first.
82 Platform& platform = Platform::GetInstance();
83
84 try {
85 for (int index = 0; index < argc; index++) {
86 TString argument = argv[index];
87
88 if (argument == _T("-Xappcds:generatecache")) {
89 platform.SetAppCDSState(cdsGenCache);
90 }
91 else if (argument == _T("-Xappcds:off")) {
92 platform.SetAppCDSState(cdsDisabled);
93 }
94 else if (argument == _T("-Xapp:child")) {
95 parentProcess = false;
96 }
97 #ifdef DEBUG
98 // There is a compiler bug on Mac when overloading
99 // ShowResponseMessage.
100 else if (argument == _T("-nativedebug")) {
101 if (platform.ShowResponseMessage(_T("Test"),
102 TString(_T("Would you like to debug?\n\nProcessID: "))
103 + PlatformString(platform.GetProcessID()).toString())
104 == mrOK) {
105 while (platform.IsNativeDebuggerPresent() == false) {
106 }
107 }
108 }
109 #endif //DEBUG
110 }
111
112 // Package must be initialized after Platform is fully initialized.
113 Package& package = Package::GetInstance();
114 Macros::Initialize();
115 package.SetCommandLineArguments(argc, argv);
116 platform.SetCurrentDirectory(package.GetPackageAppDirectory());
117
118 if (package.CheckForSingleInstance()) {
119 // reactivate the first instance if the process Id is valid
120 platform.reactivateAnotherInstance();
121 if (package.GetArgs().size() > 0 &&
122 platform.GetSingleInstanceProcessId() != 0) {
123 // if user specified args, pass them to the first instance
124 return RunVM(SINGLE_INSTANCE_NOTIFICATION_LAUNCH);
125 }
126 return true;
127 }
128
129 switch (platform.GetAppCDSState()) {
130 case cdsDisabled:
131 case cdsUninitialized:
132 case cdsEnabled: {
133 break;
134 }
135
136 case cdsGenCache: {
137 TString cacheDirectory = package.GetAppCDSCacheDirectory();
138
139 if (FilePath::DirectoryExists(cacheDirectory) == false) {
140 FilePath::CreateDirectory(cacheDirectory, true);
141 } else {
142 TString cacheFileName =
143 package.GetAppCDSCacheFileName();
144 if (FilePath::FileExists(cacheFileName) == true) {
145 FilePath::DeleteFile(cacheFileName);
146 }
147 }
148
149 break;
150 }
151
152 case cdsAuto: {
153 TString cacheFileName = package.GetAppCDSCacheFileName();
154
155 if (parentProcess == true &&
156 FilePath::FileExists(cacheFileName) == false) {
157 AutoFreePtr<Process> process = platform.CreateProcess();
158 std::vector<TString> args;
159 args.push_back(_T("-Xappcds:generatecache"));
160 args.push_back(_T("-Xapp:child"));
161 process->Execute(
162 platform.GetModuleFileName(), args, true);
163
164 if (FilePath::FileExists(cacheFileName) == false) {
165 // Cache does not exist after trying to generate it,
166 // so run without cache.
167 platform.SetAppCDSState(cdsDisabled);
168 package.Clear();
169 package.Initialize();
170 }
171 }
172
173 break;
174 }
175 }
176
177 // Validation
178 switch (platform.GetAppCDSState()) {
179 case cdsDisabled:
180 case cdsGenCache: {
181 // Do nothing.
182 break;
183 }
184
185 case cdsEnabled:
186 case cdsAuto: {
187 TString cacheFileName =
188 package.GetAppCDSCacheFileName();
189
190 if (FilePath::FileExists(cacheFileName) == false) {
191 Messages& messages = Messages::GetInstance();
192 TString message = PlatformString::Format(
193 messages.GetMessage(
194 APPCDS_CACHE_FILE_NOT_FOUND),
195 cacheFileName.data());
196 throw FileNotFoundException(message);
197 }
198 break;
199 }
200
201 case cdsUninitialized: {
202 platform.ShowMessage(_T("Internal Error"));
203 break;
204 }
205 }
206
207 // Run App
208 result = RunVM(USER_APP_LAUNCH);
209 } catch (FileNotFoundException &e) {
210 platform.ShowMessage(e.GetMessage());
211 }
212
213 return result;
214 }
215
216 JNIEXPORT void stop_launcher() {
217 }
218 }