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* posix/tst-waitid.c (do_test): Add tests for waitpid with WCONTINUED.
* posix/sys/wait.h [__WIFCONTINUED] (WIFCONTINUED): New macro. * stdlib/stdlib.h [__WIFCONTINUED] (WIFCONTINUED): New macro. * sysdeps/generic/bits/waitstatus.h (__W_CONTINUED): New macro. [WCONTINUED] (__WIFCONTINUED): New macro. (__WIFSIGNALED): Rewritten to exclude __W_CONTINUED value, and have no branches.
This commit is contained in:
Roland McGrath
parent
c5e2501b0b
commit
a044c713b0
@ -1,5 +1,14 @@
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2004-09-27 Roland McGrath <roland@redhat.com>
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* posix/tst-waitid.c (do_test): Add tests for waitpid with WCONTINUED.
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* posix/sys/wait.h [__WIFCONTINUED] (WIFCONTINUED): New macro.
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* stdlib/stdlib.h [__WIFCONTINUED] (WIFCONTINUED): New macro.
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* sysdeps/generic/bits/waitstatus.h (__W_CONTINUED): New macro.
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[WCONTINUED] (__WIFCONTINUED): New macro.
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(__WIFSIGNALED): Rewritten to exclude __W_CONTINUED value, and have no
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branches.
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* sysdeps/unix/sysv/linux/waitid.c (do_waitid): Add fifth argument to
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all three syscall uses, not just one!
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@ -1,5 +1,5 @@
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/* Definitions of status bits for `wait' et al.
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Copyright (C) 1992, 1994, 1996, 1997, 2000 Free Software Foundation, Inc.
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Copyright (C) 1992,1994,1996,1997,2000,2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -38,23 +38,25 @@
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#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
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/* Nonzero if STATUS indicates termination by a signal. */
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#ifdef __GNUC__
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# define __WIFSIGNALED(status) \
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(__extension__ ({ int __status = (status); \
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!__WIFSTOPPED(__status) && !__WIFEXITED(__status); }))
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#else /* Not GCC. */
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# define __WIFSIGNALED(status) (!__WIFSTOPPED(status) && !__WIFEXITED(status))
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#endif /* GCC. */
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#define __WIFSIGNALED(status) \
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(((signed char) ((((((status) + 1) & 0xffff) - 1) & 0x7f) + 1) >> 1) > 0)
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/* Nonzero if STATUS indicates the child is stopped. */
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#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
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/* Nonzero if STATUS indicates the child continued after a stop. We only
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define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */
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#ifdef WCONTINUED
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# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
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#endif
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/* Nonzero if STATUS indicates the child dumped core. */
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#define __WCOREDUMP(status) ((status) & __WCOREFLAG)
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/* Macros for constructing status values. */
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#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
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#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
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#define __W_CONTINUED 0xffff
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#define __WCOREFLAG 0x80
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@ -1,4 +1,4 @@
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/* Copyright (C) 1991-1994,1996-2001,2003 Free Software Foundation, Inc.
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/* Copyright (C) 1991-1994,1996-2001,2003,2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -30,7 +30,7 @@ __BEGIN_DECLS
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#include <signal.h>
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#include <sys/resource.h>
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/* These macros could also be defined int <stdlib.h>. */
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/* These macros could also be defined in <stdlib.h>. */
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#if !defined _STDLIB_H || !defined __USE_XOPEN
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/* This will define the `W*' macros for the flag
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bits to `waitpid', `wait3', and `wait4'. */
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@ -84,6 +84,9 @@ typedef union
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# define WIFEXITED(status) __WIFEXITED(__WAIT_INT(status))
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# define WIFSIGNALED(status) __WIFSIGNALED(__WAIT_INT(status))
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# define WIFSTOPPED(status) __WIFSTOPPED(__WAIT_INT(status))
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# ifdef __WIFCONTINUED
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# define WIFCONTINUED(status) __WIFCONTINUED(__WAIT_INT(status))
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# endif
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#endif /* <stdlib.h> not included. */
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#ifdef __USE_BSD
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@ -335,6 +335,77 @@ do_test (int argc, char *argv[])
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info.si_signo);
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RETURN (EXIT_FAILURE);
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}
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/* Now stop him again and test waitpid with WCONTINUED. */
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expecting_sigchld = 1;
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if (kill (pid, SIGSTOP) != 0)
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{
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error (0, errno, "kill (%d, SIGSTOP)", pid);
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RETURN (EXIT_FAILURE);
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}
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pid_t wpid = waitpid (pid, &fail, WUNTRACED);
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if (wpid < 0)
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{
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error (0, errno, "waitpid WUNTRACED on stopped");
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RETURN (EXIT_FAILURE);
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}
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else if (wpid != pid)
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{
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error (0, 0,
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"waitpid WUNTRACED on stopped returned %d != %d (status %x)",
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wpid, pid, fail);
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RETURN (EXIT_FAILURE);
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}
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else if (!WIFSTOPPED (fail) || WIFSIGNALED (fail) || WIFEXITED (fail)
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|| WIFCONTINUED (fail) || WSTOPSIG (fail) != SIGSTOP)
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{
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error (0, 0, "waitpid WUNTRACED on stopped: status %x", fail);
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RETURN (EXIT_FAILURE);
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}
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CHECK_SIGCHLD ("stopped", CLD_STOPPED, SIGSTOP);
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expecting_sigchld = 1;
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if (kill (pid, SIGCONT) != 0)
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{
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error (0, errno, "kill (%d, SIGCONT)", pid);
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RETURN (EXIT_FAILURE);
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}
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/* Wait for the child to have continued. */
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sleep (2);
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if (expecting_sigchld)
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{
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error (0, 0, "no SIGCHLD seen for SIGCONT (optional)");
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expecting_sigchld = 0;
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}
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else
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CHECK_SIGCHLD ("continued", CLD_CONTINUED, SIGCONT);
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wpid = waitpid (pid, &fail, WCONTINUED);
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if (wpid < 0)
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{
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if (errno == EINVAL)
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error (0, 0, "waitpid does not support WCONTINUED");
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else
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{
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error (0, errno, "waitpid WCONTINUED on continued");
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RETURN (EXIT_FAILURE);
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}
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}
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else if (wpid != pid)
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{
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error (0, 0,
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"waitpid WCONTINUED on continued returned %d != %d (status %x)",
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wpid, pid, fail);
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RETURN (EXIT_FAILURE);
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}
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else if (WIFSTOPPED (fail) || WIFSIGNALED (fail) || WIFEXITED (fail)
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|| !WIFCONTINUED (fail))
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{
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error (0, 0, "waitpid WCONTINUED on continued: status %x", fail);
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RETURN (EXIT_FAILURE);
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}
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#endif
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expecting_sigchld = 1;
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@ -88,6 +88,9 @@ typedef union
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# define WIFEXITED(status) __WIFEXITED(__WAIT_INT(status))
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# define WIFSIGNALED(status) __WIFSIGNALED(__WAIT_INT(status))
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# define WIFSTOPPED(status) __WIFSTOPPED(__WAIT_INT(status))
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# ifdef __WIFCONTINUED
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# define WIFCONTINUED(status) __WIFCONTINUED(__WAIT_INT(status))
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# endif
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#endif /* X/Open and <sys/wait.h> not included. */
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__BEGIN_NAMESPACE_STD
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@ -1,5 +1,5 @@
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/* Definitions of status bits for `wait' et al.
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Copyright (C) 1992, 1994, 1996, 1997, 2000 Free Software Foundation, Inc.
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Copyright (C) 1992,1994,1996,1997,2000,2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -38,23 +38,25 @@
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#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
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/* Nonzero if STATUS indicates termination by a signal. */
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#ifdef __GNUC__
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# define __WIFSIGNALED(status) \
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(__extension__ ({ int __status = (status); \
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!__WIFSTOPPED(__status) && !__WIFEXITED(__status); }))
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#else /* Not GCC. */
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# define __WIFSIGNALED(status) (!__WIFSTOPPED(status) && !__WIFEXITED(status))
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#endif /* GCC. */
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#define __WIFSIGNALED(status) \
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(((signed char) ((((((status) + 1) & 0xffff) - 1) & 0x7f) + 1) >> 1) > 0)
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/* Nonzero if STATUS indicates the child is stopped. */
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#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
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/* Nonzero if STATUS indicates the child continued after a stop. We only
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define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */
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#ifdef WCONTINUED
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# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
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#endif
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/* Nonzero if STATUS indicates the child dumped core. */
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#define __WCOREDUMP(status) ((status) & __WCOREFLAG)
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/* Macros for constructing status values. */
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#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
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#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
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#define __W_CONTINUED 0xffff
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#define __WCOREFLAG 0x80
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