f7e68c9c99
In user-mode emulation there is a small race between preexit_cleanup and exit_group() which means we may end up calling instrumented instructions before the kernel reaps child threads. To solve this we implement a new helper which ensures the callbacks are flushed along with any translations before we let the host do it's a thing. While we are at it make the documentation of qemu_plugin_register_atexit_cb clearer as to what the user can expect. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Mahmoud Mandour <ma.mandourr@gmail.com> Acked-by: Warner Losh <imp@bsdimp.com> Message-Id: <20210720232703.10650-21-alex.bennee@linaro.org>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* exit support for qemu
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*
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* Copyright (c) 2018 Alex Bennée <alex.bennee@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu.h"
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#ifdef CONFIG_GPROF
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#include <sys/gmon.h>
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#endif
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#ifdef CONFIG_GCOV
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extern void __gcov_dump(void);
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#endif
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void preexit_cleanup(CPUArchState *env, int code)
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{
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#ifdef CONFIG_GPROF
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_mcleanup();
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#endif
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#ifdef CONFIG_GCOV
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__gcov_dump();
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#endif
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gdb_exit(code);
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qemu_plugin_user_exit();
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}
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