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Side by Side Diff: java/src/org/apache/tomcat/jni/Proc.java

Issue 2842333002: Updated netty-tcnative to version 2.0.0.Final (Closed)
Patch Set: Created 3 years, 7 months ago
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1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.tomcat.jni;
19
20 /** Proc
21 *
22 * @author Mladen Turk
23 */
24 public class Proc {
25
26 /*
27 * apr_cmdtype_e enum
28 */
29 public static final int APR_SHELLCM = 0; /** use the shell to invoke th e program */
30 public static final int APR_PROGRAM = 1; /** invoke the program directl y, no copied env */
31 public static final int APR_PROGRAM_ENV = 2; /** invoke the program, replic ating our environment */
32 public static final int APR_PROGRAM_PATH = 3; /** find program on PATH, use our environment */
33 public static final int APR_SHELLCMD_ENV = 4; /** use the shell to invoke th e program,
34 * replicating our environme nt
35 */
36
37 /*
38 * apr_wait_how_e enum
39 */
40 public static final int APR_WAIT = 0; /** wait for the specified process t o finish */
41 public static final int APR_NOWAIT = 1; /** do not wait -- just see if it ha s finished */
42
43 /*
44 * apr_exit_why_e enum
45 */
46 public static final int APR_PROC_EXIT = 1; /** process exited normall y */
47 public static final int APR_PROC_SIGNAL = 2; /** process exited due to a signal */
48 public static final int APR_PROC_SIGNAL_CORE = 4; /** process exited and dum ped a core file */
49
50 public static final int APR_NO_PIPE = 0;
51 public static final int APR_FULL_BLOCK = 1;
52 public static final int APR_FULL_NONBLOCK = 2;
53 public static final int APR_PARENT_BLOCK = 3;
54 public static final int APR_CHILD_BLOCK = 4;
55
56 public static final int APR_LIMIT_CPU = 0;
57 public static final int APR_LIMIT_MEM = 1;
58 public static final int APR_LIMIT_NPROC = 2;
59 public static final int APR_LIMIT_NOFILE = 3;
60
61
62 /** child has died, caller must call unregister still */
63 public static final int APR_OC_REASON_DEATH = 0;
64 /** write_fd is unwritable */
65 public static final int APR_OC_REASON_UNWRITABLE = 1;
66 /** a restart is occurring, perform any necessary cleanup (including
67 * sending a special signal to child)
68 */
69 public static final int APR_OC_REASON_RESTART = 2;
70 /** unregister has been called, do whatever is necessary (including
71 * kill the child)
72 */
73 public static final int APR_OC_REASON_UNREGISTER = 3;
74 /** somehow the child exited without us knowing ... buggy os? */
75 public static final int APR_OC_REASON_LOST = 4;
76 /** a health check is occurring, for most maintenance functions
77 * this is a no-op.
78 */
79 public static final int APR_OC_REASON_RUNNING = 5;
80
81 /* apr_kill_conditions_e enumeration */
82 /** process is never sent any signals */
83 public static final int APR_KILL_NEVER = 0;
84 /** process is sent SIGKILL on apr_pool_t cleanup */
85 public static final int APR_KILL_ALWAYS = 1;
86 /** SIGTERM, wait 3 seconds, SIGKILL */
87 public static final int APR_KILL_AFTER_TIMEOUT = 2;
88 /** wait forever for the process to complete */
89 public static final int APR_JUST_WAIT = 3;
90 /** send SIGTERM and then wait */
91 public static final int APR_KILL_ONLY_ONCE = 4;
92
93 public static final int APR_PROC_DETACH_FOREGROUND = 0; /** Do not detach */
94 public static final int APR_PROC_DETACH_DAEMONIZE = 1; /** Detach */
95
96 /* Maximum number of arguments for create process call */
97 public static final int MAX_ARGS_SIZE = 1024;
98 /* Maximum number of environment variables for create process call */
99 public static final int MAX_ENV_SIZE = 1024;
100
101 /**
102 * Allocate apr_proc_t structure from pool
103 * This is not an apr function.
104 * @param cont The pool to use.
105 */
106 public static native long alloc(long cont);
107
108 /**
109 * This is currently the only non-portable call in APR. This executes
110 * a standard unix fork.
111 * @param proc The resulting process handle.
112 * @param cont The pool to use.
113 * @return APR_INCHILD for the child, and APR_INPARENT for the parent
114 * or an error.
115 */
116 public static native int fork(long [] proc, long cont);
117
118 /**
119 * Create a new process and execute a new program within that process.
120 * This function returns without waiting for the new process to terminate;
121 * use apr_proc_wait for that.
122 * @param progname The program to run
123 * @param args The arguments to pass to the new program. The first
124 * one should be the program name.
125 * @param env The new environment table for the new process. This
126 * should be a list of NULL-terminated strings. This argument
127 * is ignored for APR_PROGRAM_ENV, APR_PROGRAM_PATH, and
128 * APR_SHELLCMD_ENV types of commands.
129 * @param attr The procattr we should use to determine how to create the new
130 * process
131 * @param pool The pool to use.
132 * @return The resulting process handle.
133 */
134 public static native int create(long proc, String progname,
135 String [] args, String [] env,
136 long attr, long pool);
137
138 /**
139 * Wait for a child process to die
140 * @param proc The process handle that corresponds to the desired child proc ess
141 * @param exit exit[0] The returned exit status of the child, if a child pro cess
142 * dies, or the signal that caused the child to die.
143 * On platforms that don't support obtaining this information ,
144 * the status parameter will be returned as APR_ENOTIMPL.
145 * exit[1] Why the child died, the bitwise or of:
146 * <PRE>
147 * APR_PROC_EXIT -- process terminated normally
148 * APR_PROC_SIGNAL -- process was killed by a signal
149 * APR_PROC_SIGNAL_CORE -- process was killed by a signal, and
150 * generated a core dump.
151 * </PRE>
152 * @param waithow How should we wait. One of:
153 * <PRE>
154 * APR_WAIT -- block until the child process dies.
155 * APR_NOWAIT -- return immediately regardless of if the
156 * child is dead or not.
157 * </PRE>
158 * @return The childs status is in the return code to this process. It is o ne of:
159 * <PRE>
160 * APR_CHILD_DONE -- child is no longer running.
161 * APR_CHILD_NOTDONE -- child is still running.
162 * </PRE>
163 */
164 public static native int wait(long proc, int [] exit, int waithow);
165
166 /**
167 * Wait for any current child process to die and return information
168 * about that child.
169 * @param proc Pointer to NULL on entry, will be filled out with child's
170 * information
171 * @param exit exit[0] The returned exit status of the child, if a child pro cess
172 * dies, or the signal that caused the child to die.
173 * On platforms that don't support obtaining this information ,
174 * the status parameter will be returned as APR_ENOTIMPL.
175 * exit[1] Why the child died, the bitwise or of:
176 * <PRE>
177 * APR_PROC_EXIT -- process terminated normally
178 * APR_PROC_SIGNAL -- process was killed by a signal
179 * APR_PROC_SIGNAL_CORE -- process was killed by a signal, and
180 * generated a core dump.
181 * </PRE>
182 * @param waithow How should we wait. One of:
183 * <PRE>
184 * APR_WAIT -- block until the child process dies.
185 * APR_NOWAIT -- return immediately regardless of if the
186 * child is dead or not.
187 * </PRE>
188 * @param pool Pool to allocate child information out of.
189 */
190 public static native int waitAllProcs(long proc, int [] exit,
191 int waithow, long pool);
192
193 /**
194 * Detach the process from the controlling terminal.
195 * @param daemonize set to non-zero if the process should daemonize
196 * and become a background process, else it will
197 * stay in the foreground.
198 */
199 public static native int detach(int daemonize);
200
201 /**
202 * Terminate a process.
203 * @param proc The process to terminate.
204 * @param sig How to kill the process.
205 */
206 public static native int kill(long proc, int sig);
207
208 }
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