Mercurial > hg > truffle

annotate src/os/aix/vm/jsig.c @ 21947:9f70fc90169d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Truffle: remove expensive assertion
author Andreas Woess <andreas.woess@oracle.com>
date Wed, 17 Jun 2015 04:09:30 +0200
parents 666e6ce3976c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14415
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
1 /*
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
3 * Copyright 2012, 2013 SAP AG. All rights reserved.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
5 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
6 * This code is free software; you can redistribute it and/or modify it
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
7 * under the terms of the GNU General Public License version 2 only, as
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
8 * published by the Free Software Foundation.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
9 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
10 * This code is distributed in the hope that it will be useful, but WITHOUT
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
13 * version 2 for more details (a copy is included in the LICENSE file that
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
14 * accompanied this code).
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
15 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
16 * You should have received a copy of the GNU General Public License version
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
17 * 2 along with this work; if not, write to the Free Software Foundation,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
19 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
21 * or visit www.oracle.com if you need additional information or have any
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
22 * questions.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
23 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
24 */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
25
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
26 /* CopyrightVersion 1.2 */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
27
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
28 /* This is a special library that should be loaded before libc &
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
29 * libthread to interpose the signal handler installation functions:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
30 * sigaction(), signal(), sigset().
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
31 * Used for signal-chaining. See RFE 4381843.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
32 */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
33
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
34 #include <signal.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
35 #include <dlfcn.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
36 #include <pthread.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
37 #include <stdio.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
38 #include <stdlib.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
39
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
40 #define bool int
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
41 #define true 1
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
42 #define false 0
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
43
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
44 // Highest so far on AIX 5.2 is SIGSAK (63)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
45 #define MAXSIGNUM 63
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
46 #define MASK(sig) ((unsigned int)1 << sig)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
47
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
48 static struct sigaction sact[MAXSIGNUM]; /* saved signal handlers */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
49 static unsigned int jvmsigs = 0; /* signals used by jvm */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
50
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
51 /* used to synchronize the installation of signal handlers */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
52 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
53 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
54 static pthread_t tid = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
55
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
56 typedef void (*sa_handler_t)(int);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
57 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
58 // signal_t is already defined on AIX
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
59 typedef sa_handler_t (*signal_like_function_t)(int, sa_handler_t);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
60 typedef int (*sigaction_t)(int, const struct sigaction *, struct sigaction *);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
61
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
62 static signal_like_function_t os_signal = 0; /* os's version of signal()/sigset() */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
63 static sigaction_t os_sigaction = 0; /* os's version of sigaction() */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
64
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
65 static bool jvm_signal_installing = false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
66 static bool jvm_signal_installed = false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
67
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
68 static void signal_lock() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
69 pthread_mutex_lock(&mutex);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
70 /* When the jvm is installing its set of signal handlers, threads
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
71 * other than the jvm thread should wait */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
72 if (jvm_signal_installing) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
73 if (tid != pthread_self()) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
74 pthread_cond_wait(&cond, &mutex);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
75 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
76 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
77 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
78
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
79 static void signal_unlock() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
80 pthread_mutex_unlock(&mutex);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
81 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
82
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
83 static sa_handler_t call_os_signal(int sig, sa_handler_t disp,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
84 bool is_sigset) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
85 if (os_signal == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
86 if (!is_sigset) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
87 // Aix: call functions directly instead of dlsym'ing them
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
88 os_signal = signal;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
89 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
90 // Aix: call functions directly instead of dlsym'ing them
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
91 os_signal = sigset;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
92 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
93 if (os_signal == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
94 printf("%s\n", dlerror());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
95 exit(0);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
96 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
97 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
98 return (*os_signal)(sig, disp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
99 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
100
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
101 static void save_signal_handler(int sig, sa_handler_t disp) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
102 sigset_t set;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
103 sact[sig].sa_handler = disp;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
104 sigemptyset(&set);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
105 sact[sig].sa_mask = set;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
106 sact[sig].sa_flags = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
107 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
108
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
109 static sa_handler_t set_signal(int sig, sa_handler_t disp, bool is_sigset) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
110 sa_handler_t oldhandler;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
111 bool sigused;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
112
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
113 signal_lock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
114
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
115 sigused = (MASK(sig) & jvmsigs) != 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
116 if (jvm_signal_installed && sigused) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
117 /* jvm has installed its signal handler for this signal. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
118 /* Save the handler. Don't really install it. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
119 oldhandler = sact[sig].sa_handler;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
120 save_signal_handler(sig, disp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
121
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
122 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
123 return oldhandler;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
124 } else if (jvm_signal_installing) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
125 /* jvm is installing its signal handlers. Install the new
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
126 * handlers and save the old ones. jvm uses sigaction().
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
127 * Leave the piece here just in case. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
128 oldhandler = call_os_signal(sig, disp, is_sigset);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
129 save_signal_handler(sig, oldhandler);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
130
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
131 /* Record the signals used by jvm */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
132 jvmsigs |= MASK(sig);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
133
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
134 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
135 return oldhandler;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
136 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
137 /* jvm has no relation with this signal (yet). Install the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
138 * the handler. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
139 oldhandler = call_os_signal(sig, disp, is_sigset);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
140
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
141 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
142 return oldhandler;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
143 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
144 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
145
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
146 sa_handler_t signal(int sig, sa_handler_t disp) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
147 return set_signal(sig, disp, false);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
148 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
149
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
150 sa_handler_t sigset(int sig, sa_handler_t disp) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
151 return set_signal(sig, disp, true);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
152 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
153
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
154 static int call_os_sigaction(int sig, const struct sigaction *act,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
155 struct sigaction *oact) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
156 if (os_sigaction == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
157 // Aix: call functions directly instead of dlsym'ing them
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
158 os_sigaction = sigaction;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
159 if (os_sigaction == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
160 printf("%s\n", dlerror());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
161 exit(0);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
162 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
163 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
164 return (*os_sigaction)(sig, act, oact);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
165 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
166
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
167 int sigaction(int sig, const struct sigaction *act, struct sigaction *oact) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
168 int res;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
169 bool sigused;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
170 struct sigaction oldAct;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
171
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
172 signal_lock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
173
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
174 sigused = (MASK(sig) & jvmsigs) != 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
175 if (jvm_signal_installed && sigused) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
176 /* jvm has installed its signal handler for this signal. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
177 /* Save the handler. Don't really install it. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
178 if (oact != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
179 *oact = sact[sig];
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
180 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
181 if (act != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
182 sact[sig] = *act;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
183 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
184
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
185 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
186 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
187 } else if (jvm_signal_installing) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
188 /* jvm is installing its signal handlers. Install the new
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
189 * handlers and save the old ones. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
190 res = call_os_sigaction(sig, act, &oldAct);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
191 sact[sig] = oldAct;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
192 if (oact != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
193 *oact = oldAct;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
194 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
195
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
196 /* Record the signals used by jvm */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
197 jvmsigs |= MASK(sig);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
198
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
199 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
200 return res;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
201 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
202 /* jvm has no relation with this signal (yet). Install the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
203 * the handler. */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
204 res = call_os_sigaction(sig, act, oact);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
205
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
206 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
207 return res;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
208 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
209 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
210
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
211 /* The three functions for the jvm to call into */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
212 void JVM_begin_signal_setting() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
213 signal_lock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
214 jvm_signal_installing = true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
215 tid = pthread_self();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
216 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
217 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
218
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
219 void JVM_end_signal_setting() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
220 signal_lock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
221 jvm_signal_installed = true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
222 jvm_signal_installing = false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
223 pthread_cond_broadcast(&cond);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
224 signal_unlock();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
225 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
226
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
227 struct sigaction *JVM_get_signal_action(int sig) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
228 /* Does race condition make sense here? */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
229 if ((MASK(sig) & jvmsigs) != 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
230 return &sact[sig];
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
231 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
232 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
233 }