95c6cd753f
Historically we've made a few mistakes where they haven't matched the right number. And most non-Googlers are much more familiar with the numbers, so it seems to make sense to rely more on them. Especially in header files, which we actually expect real people to have to read from time to time. Test: treehugger Change-Id: I0d4a97454ee108de1d32f21df285315c5488d886
121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <sys/cdefs.h>
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#if __ANDROID_API__ < 21
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#include <errno.h>
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#include <signal.h>
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#include <string.h>
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__BEGIN_DECLS
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sighandler_t bsd_signal(int __signal, sighandler_t __handler) __REMOVED_IN(21);
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/* These weren't introduced until L. */
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int __libc_current_sigrtmax() __attribute__((__weak__)) __VERSIONER_NO_GUARD;
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int __libc_current_sigrtmin() __attribute__((__weak__)) __VERSIONER_NO_GUARD;
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static __inline int __ndk_legacy___libc_current_sigrtmax() {
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if (__libc_current_sigrtmax) return __libc_current_sigrtmax();
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return __SIGRTMAX; /* Should match __libc_current_sigrtmax. */
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}
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static __inline int __ndk_legacy___libc_current_sigrtmin() {
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if (__libc_current_sigrtmin) return __libc_current_sigrtmin();
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return __SIGRTMIN + 7; /* Should match __libc_current_sigrtmin. */
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}
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#undef SIGRTMAX
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#define SIGRTMAX __ndk_legacy___libc_current_sigrtmax()
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#undef SIGRTMIN
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#define SIGRTMIN __ndk_legacy___libc_current_sigrtmin()
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static __inline int sigismember(const sigset_t *set, int signum) {
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/* Signal numbers start at 1, but bit positions start at 0. */
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int bit = signum - 1;
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const unsigned long *local_set = (const unsigned long *)set;
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if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
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errno = EINVAL;
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return -1;
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}
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return (int)((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1);
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}
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static __inline int sigaddset(sigset_t *set, int signum) {
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/* Signal numbers start at 1, but bit positions start at 0. */
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int bit = signum - 1;
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unsigned long *local_set = (unsigned long *)set;
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if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
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errno = EINVAL;
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return -1;
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}
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local_set[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT);
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return 0;
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}
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static __inline int sigdelset(sigset_t *set, int signum) {
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/* Signal numbers start at 1, but bit positions start at 0. */
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int bit = signum - 1;
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unsigned long *local_set = (unsigned long *)set;
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if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
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errno = EINVAL;
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return -1;
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}
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local_set[bit / LONG_BIT] &= ~(1UL << (bit % LONG_BIT));
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return 0;
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}
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static __inline int sigemptyset(sigset_t *set) {
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if (set == NULL) {
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errno = EINVAL;
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return -1;
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}
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memset(set, 0, sizeof(sigset_t));
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return 0;
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}
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static __inline int sigfillset(sigset_t *set) {
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if (set == NULL) {
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errno = EINVAL;
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return -1;
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}
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memset(set, ~0, sizeof(sigset_t));
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return 0;
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}
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static __inline sighandler_t signal(int s, sighandler_t f) {
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return bsd_signal(s, f);
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}
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__END_DECLS
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#endif
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