9229a45116
Recently I learnt that fprintf() is not async-signal-safe. Maybe it also attempts to allocate memory sometimes. Hence, using it when we presumably are out of memory is wishful thinking. Therefore replace that with async-signal-safe code. If you have to check pointers from traditional signal handlers, now you could do that too! While doing this, we also lose the string formatting for line number. I would argue that printing file and line number is not that useful, if the system really is out of memory. If not out of memory, a core dump would give us much more detailed information about what went wrong. clients/window.c had some calls to fail_on_null() and these are simply replaced. They were used for checking that creating new wl_proxy by issuing a protocol request worked, and IIRC that only fails on out-of-memory, so the same rationale applies here. Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
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* Copyright © 2008 Kristian Høgsberg
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* Copyright 2022 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef WESTON_XALLOC_H
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#define WESTON_XALLOC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <libweston/zalloc.h>
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static inline void *
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abort_oom_if_null(void *p)
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{
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static const char oommsg[] = ": out of memory\n";
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if (p)
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return p;
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write(STDERR_FILENO, program_invocation_short_name,
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strlen(program_invocation_short_name));
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write(STDERR_FILENO, oommsg, strlen(oommsg));
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abort();
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}
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#define xmalloc(s) (abort_oom_if_null(malloc(s)))
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#define xzalloc(s) (abort_oom_if_null(zalloc(s)))
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#define xcalloc(n, s) (abort_oom_if_null(calloc(n, s)))
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#define xstrdup(s) (abort_oom_if_null(strdup(s)))
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#define xrealloc(p, s) (abort_oom_if_null(realloc(p, s)))
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#ifdef __cplusplus
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}
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#endif
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#endif /* WESTON_XALLOC_H */
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