1 /*
2 * Copyright (c) 2014, 2019, 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 app launcher program for application packaging on Windows, Mac,
48 and Linux.
49
50 Basic approach:
51 - Launcher (jpackageapplauncher) is executable that loads
52 applauncher.dll/libapplauncher.dylib/libapplauncher.so
53 and calls start_launcher below.
54 - Reads app/package.cfg or Info.plist or app/<appname>.cfg for application
55 launch configuration (package.cfg is property file).
56 - Load JVM with requested JVM settings (bundled client JVM if availble,
57 server or installed JVM otherwise).
58 - Wait for JVM to exit and then exit from Main
59 - To debug application by passing command line argument.
60 - Application folder is added to the library path (so LoadLibrary()) works.
61
62 Limitations and future work:
63 - Running Java code in primordial thread may cause problems
64 (example: can not use custom stack size).
65 Solution used by java launcher is to create a new thread to invoke JVM.
66 See CR 6316197 for more information.
67 */
68
69 extern "C" {
70
71 #ifdef WINDOWS
72 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
73 LPVOID lpvReserved) {
74 return true;
75 }
76 #endif //WINDOWS
77
78 JNIEXPORT bool start_launcher(int argc, TCHAR* argv[]) {
79 bool result = false;
80 bool parentProcess = true;
81
82 // Platform must be initialize first.
83 Platform& platform = Platform::GetInstance();
84
85 try {
86 for (int index = 0; index < argc; index++) {
87 TString argument = argv[index];
88
89 if (argument == _T("-Xappcds:generatecache")) {
90 platform.SetAppCDSState(cdsGenCache);
91 }
92 else if (argument == _T("-Xappcds:off")) {
93 platform.SetAppCDSState(cdsDisabled);
94 }
95 else if (argument == _T("-Xapp:child")) {
96 parentProcess = false;
97 }
98 #ifdef DEBUG
99 // There is a compiler bug on Mac when overloading
100 // ShowResponseMessage.
101 else if (argument == _T("-nativedebug")) {
102 if (platform.ShowResponseMessage(_T("Test"),
103 TString(_T("Would you like to debug?\n\nProcessID: "))
104 + PlatformString(platform.GetProcessID()).toString())
105 == mrOK) {
106 while (platform.IsNativeDebuggerPresent() == false) {
107 }
108 }
109 }
110 #endif //DEBUG
111 }
112
113 // Package must be initialized after Platform is fully initialized.
114 Package& package = Package::GetInstance();
115 Macros::Initialize();
116 package.SetCommandLineArguments(argc, argv);
117 platform.SetCurrentDirectory(package.GetPackageAppDirectory());
118
119 switch (platform.GetAppCDSState()) {
120 case cdsDisabled:
121 case cdsUninitialized:
122 case cdsEnabled: {
123 break;
124 }
125
126 case cdsGenCache: {
127 TString cacheDirectory = package.GetAppCDSCacheDirectory();
128
129 if (FilePath::DirectoryExists(cacheDirectory) == false) {
130 FilePath::CreateDirectory(cacheDirectory, true);
131 } else {
132 TString cacheFileName =
133 package.GetAppCDSCacheFileName();
134 if (FilePath::FileExists(cacheFileName) == true) {
135 FilePath::DeleteFile(cacheFileName);
136 }
137 }
138
139 break;
140 }
141
142 case cdsAuto: {
143 TString cacheFileName = package.GetAppCDSCacheFileName();
144
145 if (parentProcess == true &&
146 FilePath::FileExists(cacheFileName) == false) {
147 AutoFreePtr<Process> process = platform.CreateProcess();
148 std::vector<TString> args;
149 args.push_back(_T("-Xappcds:generatecache"));
150 args.push_back(_T("-Xapp:child"));
151 process->Execute(
152 platform.GetModuleFileName(), args, true);
153
154 if (FilePath::FileExists(cacheFileName) == false) {
155 // Cache does not exist after trying to generate it,
156 // so run without cache.
157 platform.SetAppCDSState(cdsDisabled);
158 package.Clear();
159 package.Initialize();
160 }
161 }
162
163 break;
164 }
165 }
166
167 // Validation
168 switch (platform.GetAppCDSState()) {
169 case cdsDisabled:
170 case cdsGenCache: {
171 // Do nothing.
172 break;
173 }
174
175 case cdsEnabled:
176 case cdsAuto: {
177 TString cacheFileName =
178 package.GetAppCDSCacheFileName();
179
180 if (FilePath::FileExists(cacheFileName) == false) {
181 Messages& messages = Messages::GetInstance();
182 TString message = PlatformString::Format(
183 messages.GetMessage(
184 APPCDS_CACHE_FILE_NOT_FOUND),
185 cacheFileName.data());
186 throw FileNotFoundException(message);
187 }
188 break;
189 }
190
191 case cdsUninitialized: {
192 platform.ShowMessage(_T("Internal Error"));
193 break;
194 }
195 }
196
197 // Run App
198 result = RunVM();
199 } catch (FileNotFoundException &e) {
200 platform.ShowMessage(e.GetMessage());
201 }
202
203 return result;
204 }
205
206 JNIEXPORT void stop_launcher() {
207 }
208 }