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* linux-low.c (linux_resume_one_process): Ignore ESRCH. 

(usr_store_inferior_registers): Likewise.
	(regsets_store_inferior_registers): Likewise.
This commit is contained in:
Ulrich Weigand 2008-08-05 22:13:23 +00:00
parent fb6d93b2a9
commit 3221518cf2
2 changed files with 33 additions and 1 deletions
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7
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,10 @@
2008-08-05 Ulrich Weigand <uweigand@de.ibm.com>
Daniel Jacobowitz <dan@codesourcery.com>
* linux-low.c (linux_resume_one_process): Ignore ESRCH.
(usr_store_inferior_registers): Likewise.
(regsets_store_inferior_registers): Likewise.
2008-07-31 Rolf Jansen <rj@surtec.com>
Pedro Alves <pedro@codesourcery.com>

27
gdb/gdbserver/linux-low.c
View File

@ -1193,7 +1193,19 @@ linux_resume_one_process (struct inferior_list_entry *entry,
current_inferior = saved_inferior;
if (errno)
perror_with_name ("ptrace");
{
/* ESRCH from ptrace either means that the thread was already
running (an error) or that it is gone (a race condition). If
it's gone, we will get a notification the next time we wait,
so we can ignore the error. We could differentiate these
two, but it's tricky without waiting; the thread still exists
as a zombie, so sending it signal 0 would succeed. So just
ignore ESRCH. */
if (errno == ESRCH)
return;
perror_with_name ("ptrace");
}
}
static struct thread_resume *resume_ptr;
@ -1462,6 +1474,12 @@ usr_store_inferior_registers (int regno)
*(PTRACE_XFER_TYPE *) (buf + i));
if (errno != 0)
{
/* At this point, ESRCH should mean the process is already gone,
in which case we simply ignore attempts to change its registers.
See also the related comment in linux_resume_one_process. */
if (errno == ESRCH)
return;
if ((*the_low_target.cannot_store_register) (regno) == 0)
{
char *err = strerror (errno);
@ -1578,6 +1596,13 @@ regsets_store_inferior_registers ()
disabled_regsets[regset - target_regsets] = 1;
continue;
}
else if (errno == ESRCH)
{
/* At this point, ESRCH should mean the process is already gone,
in which case we simply ignore attempts to change its registers.
See also the related comment in linux_resume_one_process. */
return 0;
}
else
{
perror ("Warning: ptrace(regsets_store_inferior_registers)");