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658a03e9e8
We have gdb::handle_eintr, which allows us to rewrite:
...
ssize_t ret;
do
{
errno = 0;
ret = ::write (pipe[1], "+", 1);
}
while (ret == -1 && errno == EINTR);
...
into:
...
ssize_t ret = gdb::handle_eintr (-1, ::write, pipe[1], "+", 1);
...
However, the call to write got a bit mangled, requiring effort to decode it
back to its original form.
Instead, add a new function gdb::write that allows us to write:
...
ssize_t ret = gdb::write (pipe[1], "+", 1);
...
Likewise for waitpid, read and close.
Tested on x86_64-linux.
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/* Wrapper implementation for waitpid for GNU/Linux (LWP layer).
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Copyright (C) 2001-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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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 3 of the License, or
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(at your option) any later version.
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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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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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#include "linux-nat.h"
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#include "linux-waitpid.h"
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#include "gdbsupport/gdb_wait.h"
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#include "gdbsupport/eintr.h"
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/* See linux-waitpid.h. */
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std::string
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status_to_str (int status)
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{
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if (WIFSTOPPED (status))
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{
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if (WSTOPSIG (status) == SYSCALL_SIGTRAP)
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return string_printf ("%s - %s (stopped at syscall)",
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strsigno (SIGTRAP), strsignal (SIGTRAP));
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else
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return string_printf ("%s - %s (stopped)",
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strsigno (WSTOPSIG (status)),
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strsignal (WSTOPSIG (status)));
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}
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else if (WIFSIGNALED (status))
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return string_printf ("%s - %s (terminated)",
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strsigno (WTERMSIG (status)),
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strsignal (WTERMSIG (status)));
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else
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return string_printf ("%d (exited)", WEXITSTATUS (status));
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}
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/* See linux-waitpid.h. */
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int
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my_waitpid (int pid, int *status, int flags)
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{
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return gdb::waitpid (pid, status, flags);
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}
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