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 "Macros.h"
33 #include "Messages.h"
34
35 #include <stdio.h>
36 #include <signal.h>
37 #include <stdlib.h>
38
39 /*
40 This is the app launcher program for application packaging on Windows, Mac,
41 and Linux.
42
43 Basic approach:
44 - Launcher (jpackageapplauncher) is executable that loads
45 applauncher.dll/libapplauncher.dylib/libapplauncher.so
46 and calls start_launcher below.
47 - Reads app/package.cfg or Info.plist or app/<appname>.cfg for application
48 launch configuration (package.cfg is property file).
49 - Load JVM with requested JVM settings (bundled client JVM if availble,
50 server or installed JVM otherwise).
51 - Wait for JVM to exit and then exit from Main
52 - To debug application by passing command line argument.
53 - Application folder is added to the library path (so LoadLibrary()) works.
54
55 Limitations and future work:
56 - Running Java code in primordial thread may cause problems
57 (example: can not use custom stack size).
58 Solution used by java launcher is to create a new thread to invoke JVM.
59 See CR 6316197 for more information.
60 */
61
62 extern "C" {
63
64 JNIEXPORT bool start_launcher(int argc, TCHAR* argv[]) {
65 bool result = false;
66 bool parentProcess = true;
67
68 // Platform must be initialize first.
69 Platform& platform = Platform::GetInstance();
70
71 try {
72 for (int index = 0; index < argc; index++) {
73 TString argument = argv[index];
74
75 if (argument == _T("-Xappcds:generatecache")) {
76 platform.SetAppCDSState(cdsGenCache);
77 }
78 else if (argument == _T("-Xappcds:off")) {
79 platform.SetAppCDSState(cdsDisabled);
80 }
81 else if (argument == _T("-Xapp:child")) {
82 parentProcess = false;
83 }
84 #ifdef DEBUG
85 // There is a compiler bug on Mac when overloading
86 // ShowResponseMessage.
87 else if (argument == _T("-nativedebug")) {
88 if (platform.ShowResponseMessage(_T("Test"),
89 TString(_T("Would you like to debug?\n\nProcessID: "))
90 + PlatformString(platform.GetProcessID()).toString())
91 == mrOK) {
92 while (platform.IsNativeDebuggerPresent() == false) {
93 }
94 }
95 }
96 #endif //DEBUG
97 }
98
99 // Package must be initialized after Platform is fully initialized.
100 Package& package = Package::GetInstance();
101 Macros::Initialize();
102 package.SetCommandLineArguments(argc, argv);
103 platform.SetCurrentDirectory(package.GetPackageAppDirectory());
104
105 switch (platform.GetAppCDSState()) {
106 case cdsDisabled:
107 case cdsUninitialized:
108 case cdsEnabled: {
109 break;
110 }
111
112 case cdsGenCache: {
113 TString cacheDirectory = package.GetAppCDSCacheDirectory();
114
115 if (FilePath::DirectoryExists(cacheDirectory) == false) {
116 FilePath::CreateDirectory(cacheDirectory, true);
117 } else {
118 TString cacheFileName =
119 package.GetAppCDSCacheFileName();
120 if (FilePath::FileExists(cacheFileName) == true) {
121 FilePath::DeleteFile(cacheFileName);
122 }
123 }
124
125 break;
126 }
127
128 case cdsAuto: {
129 TString cacheFileName = package.GetAppCDSCacheFileName();
130
131 if (parentProcess == true &&
132 FilePath::FileExists(cacheFileName) == false) {
133 AutoFreePtr<Process> process = platform.CreateProcess();
134 std::vector<TString> args;
135 args.push_back(_T("-Xappcds:generatecache"));
136 args.push_back(_T("-Xapp:child"));
137 process->Execute(
138 platform.GetModuleFileName(), args, true);
139
140 if (FilePath::FileExists(cacheFileName) == false) {
141 // Cache does not exist after trying to generate it,
142 // so run without cache.
143 platform.SetAppCDSState(cdsDisabled);
144 package.Clear();
145 package.Initialize();
146 }
147 }
148
149 break;
150 }
151 }
152
153 // Validation
154 switch (platform.GetAppCDSState()) {
155 case cdsDisabled:
156 case cdsGenCache: {
157 // Do nothing.
158 break;
159 }
160
161 case cdsEnabled:
162 case cdsAuto: {
163 TString cacheFileName =
164 package.GetAppCDSCacheFileName();
165
166 if (FilePath::FileExists(cacheFileName) == false) {
167 Messages& messages = Messages::GetInstance();
168 TString message = PlatformString::Format(
169 messages.GetMessage(
170 APPCDS_CACHE_FILE_NOT_FOUND),
171 cacheFileName.data());
172 throw Exception(message);
173 }
174 break;
175 }
176
177 case cdsUninitialized: {
178 platform.ShowMessage(_T("Internal Error"));
179 break;
180 }
181 }
182
183 // Run App
184 result = RunVM();
185 } catch (Exception &e) {
186 platform.ShowMessage(e.GetMessage());
187 }
188
189 return result;
190 }
191
192 JNIEXPORT void stop_launcher() {
193 }
194 }