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render: Add comment.
[pspp]
/
src
/
language
/
utilities
/
host.c
diff --git
a/src/language/utilities/host.c
b/src/language/utilities/host.c
index 4a32d463973862739942190cae7cadccb5aa5739..6298db2d8b5e581dddefc9648a849e97db473918 100644
(file)
--- a/
src/language/utilities/host.c
+++ b/
src/language/utilities/host.c
@@
-40,6
+40,7
@@
#include "libpspp/temp-file.h"
#include "output/text-item.h"
#include "libpspp/temp-file.h"
#include "output/text-item.h"
+#include "gl/error.h"
#include "gl/intprops.h"
#include "gl/localcharset.h"
#include "gl/read-file.h"
#include "gl/intprops.h"
#include "gl/localcharset.h"
#include "gl/read-file.h"
@@
-121,6
+122,11
@@
run_command (const char *command, struct timespec timeout)
{
/* Running in the child. */
{
/* Running in the child. */
+#if __GNU__
+ /* Hurd doesn't support inheriting process timers in a way that works. */
+ if (setpgid (0, 0) < 0)
+ error (1, errno, _("Failed to set process group."));
+#else
/* Set up timeout. */
if (timeout.tv_sec < TYPE_MAXIMUM (time_t))
{
/* Set up timeout. */
if (timeout.tv_sec < TYPE_MAXIMUM (time_t))
{
@@
-136,8
+142,10
@@
run_command (const char *command, struct timespec timeout)
.tv_usec = left.tv_nsec / 1000
}
};
.tv_usec = left.tv_nsec / 1000
}
};
- setitimer (ITIMER_REAL, &it, NULL);
+ if (setitimer (ITIMER_REAL, &it, NULL) < 0)
+ error (1, errno, _("Failed to set timeout."));
}
}
+#endif
/* Set up file descriptors:
- /dev/null for stdin
/* Set up file descriptors:
- /dev/null for stdin
@@
-172,7
+180,15
@@
run_command (const char *command, struct timespec timeout)
int error = 0;
for (;;)
{
int error = 0;
for (;;)
{
- pid_t retval = waitpid (pid, &status, 0);
+#if __GNU__
+ if (timespec_cmp (current_timespec (), timeout) >= 0)
+ kill (-pid, SIGALRM);
+
+ int flags = WNOHANG;
+#else
+ int flags = 0;
+#endif
+ pid_t retval = waitpid (pid, &status, flags);
if (retval == pid)
break;
else if (retval < 0)
if (retval == pid)
break;
else if (retval < 0)
@@
-183,6
+199,10
@@
run_command (const char *command, struct timespec timeout)
break;
}
}
break;
}
}
+#if __GNU__
+ else if (retval == 0)
+ sleep (1);
+#endif
else
NOT_REACHED ();
}
else
NOT_REACHED ();
}