1 /*
2 * Copyright (c) 1999, 2014, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
25 #include "runtime/os.hpp"
26
27 #ifndef OS_POSIX_VM_OS_POSIX_HPP
28 #define OS_POSIX_VM_OS_POSIX_HPP
29
30 // File conventions
31 static const char* file_separator() { return "/"; }
32 static const char* line_separator() { return "\n"; }
33 static const char* path_separator() { return ":"; }
34
35 class Posix {
36 friend class os;
37
38 protected:
39 static void print_distro_info(outputStream* st);
40 static void print_rlimit_info(outputStream* st);
41 static void print_uname_info(outputStream* st);
42 static void print_libversion_info(outputStream* st);
43 static void print_load_average(outputStream* st);
44
45 public:
46
47 // Returns true if signal is valid.
48 static bool is_valid_signal(int sig);
49
50 // Helper function, returns a string (e.g. "SIGILL") for a signal.
51 // Returned string is a constant. For unknown signals "UNKNOWN" is returned.
52 static const char* get_signal_name(int sig, char* out, size_t outlen);
53
54 // Helper function, returns a signal number for a given signal name, e.g. 11
55 // for "SIGSEGV". Name can be given with or without "SIG" prefix, so both
56 // "SEGV" or "SIGSEGV" work. Name must be uppercase.
57 // Returns -1 for an unknown signal name.
58 static int get_signal_number(const char* signal_name);
59
60 // Returns one-line short description of a signal set in a user provided buffer.
61 static const char* describe_signal_set_short(const sigset_t* set, char* buffer, size_t size);
62
63 // Prints a short one-line description of a signal set.
64 static void print_signal_set_short(outputStream* st, const sigset_t* set);
65
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1 /*
2 * Copyright (c) 1999, 2016, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
25 #include "runtime/os.hpp"
26
27 #ifndef OS_POSIX_VM_OS_POSIX_HPP
28 #define OS_POSIX_VM_OS_POSIX_HPP
29
30 // File conventions
31 static const char* file_separator() { return "/"; }
32 static const char* line_separator() { return "\n"; }
33 static const char* path_separator() { return ":"; }
34
35 class Posix {
36 friend class os;
37
38 protected:
39 static void print_distro_info(outputStream* st);
40 static void print_rlimit_info(outputStream* st);
41 static void print_uname_info(outputStream* st);
42 static void print_libversion_info(outputStream* st);
43 static void print_load_average(outputStream* st);
44
45 // Minimum stack size a thread can be created with (allowing
46 // the VM to completely create the thread and enter user code)
47 static size_t _compiler_thread_min_stack_allowed;
48 static size_t _java_thread_min_stack_allowed;
49 static size_t _vm_internal_thread_min_stack_allowed;
50
51 public:
52 // Return default stack size for the specified thread type
53 static size_t default_stack_size(os::ThreadType thr_type);
54 // Check and sets minimum stack sizes
55 static jint set_minimum_stack_sizes();
56 static size_t get_initial_stack_size(ThreadType thr_type, size_t req_stack_size);
57
58 // Returns true if signal is valid.
59 static bool is_valid_signal(int sig);
60
61 // Helper function, returns a string (e.g. "SIGILL") for a signal.
62 // Returned string is a constant. For unknown signals "UNKNOWN" is returned.
63 static const char* get_signal_name(int sig, char* out, size_t outlen);
64
65 // Helper function, returns a signal number for a given signal name, e.g. 11
66 // for "SIGSEGV". Name can be given with or without "SIG" prefix, so both
67 // "SEGV" or "SIGSEGV" work. Name must be uppercase.
68 // Returns -1 for an unknown signal name.
69 static int get_signal_number(const char* signal_name);
70
71 // Returns one-line short description of a signal set in a user provided buffer.
72 static const char* describe_signal_set_short(const sigset_t* set, char* buffer, size_t size);
73
74 // Prints a short one-line description of a signal set.
75 static void print_signal_set_short(outputStream* st, const sigset_t* set);
76
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