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authorChristopher Faylor <me@cgf.cx>2004-09-12 07:47:57 +0400
committerChristopher Faylor <me@cgf.cx>2004-09-12 07:47:57 +0400
commitd584454c8231f5811136b1ab88defe6e5ca81923 (patch)
tree895b902952e3c3d4e329703af6ccc29275b9fec5 /winsup/cygwin/select.cc
parentca5ec6685a79620c1e24d2ca19081ee4f432b316 (diff)
* exceptions.cc: (ctrl_c_handler): Do nothing while a Cygwin subprocess is
starting. * child_info.h (init_child_info): Remove pid argument from declaration. * cygheap.h (init_cygheap::pid): New element. * dcrt0.cc (dll_crt0_0): Eliminate handling of now-noexistent cygpid parameter in child_info struct. Set forkee to 'true' rather than cygpid since the pid value was never used. (dll_crt0_1): Ditto. (_dll_crt0): Ditto. * fork.cc (fork_child): Don't wait for sigthread. This is handled in the fork call now. (fork_parent): Remove obsolete pid argument from init_child_info call. Don't do anything special with cygpid when DEBUGGING. (fork): Delay all signals during fork. (fork_init): Don't do anything special when DEBUGGING. * pinfo.cc (set_myself): Remove pid parameter. Use new pid field in cygheap. (pinfo_init): Don't pass pid argument to set_myself. * sigproc.cc (sig_send): Wait for dwProcessId to be non-zero as well as sendsig. (init_child_info): Eliminate handling of pid. (wait_sig): Implement method to temporarily hold off sending signals. * sigproc.h (__SIGHOLD): New enum. (__SIGNOHOLD): Ditto. * spawn.cc (spawn_guts): Remove obsolete pid argument from init_child_info call.
Diffstat (limited to 'winsup/cygwin/select.cc')
-rw-r--r--winsup/cygwin/select.cc104
1 files changed, 52 insertions, 52 deletions
diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc
index e2d11a408..95ee14161 100644
--- a/winsup/cygwin/select.cc
+++ b/winsup/cygwin/select.cc
@@ -507,63 +507,63 @@ out:
if (s->write_selected)
{
if (s->write_ready)
- {
- select_printf ("%s, already ready for write", fh->get_name ());
- gotone++;
- }
+ {
+ select_printf ("%s, already ready for write", fh->get_name ());
+ gotone++;
+ }
/* Do we need to do anything about SIGTTOU here? */
else if (fh->get_device () == FH_PIPER)
select_printf ("%s, select for write on read end of pipe",
fh->get_name ());
else
- {
- /* We don't worry about the guard mutex, because that only applies
- when from_select is false, and peek_pipe is never called that
- way for writes. */
-
- IO_STATUS_BLOCK iosb = {0};
- FILE_PIPE_LOCAL_INFORMATION fpli = {0};
-
- if (NtQueryInformationFile (h,
- &iosb,
- &fpli,
- sizeof (fpli),
- FilePipeLocalInformation))
- {
- /* If NtQueryInformationFile fails, optimistically assume the
- pipe is writable. This could happen on Win9x, because
- NtQueryInformationFile is not available, or if we somehow
- inherit a pipe that doesn't permit FILE_READ_ATTRIBUTES
- access on the write end. */
- select_printf ("%s, NtQueryInformationFile failed",
- fh->get_name ());
- gotone += s->write_ready = true;
- }
- /* Ensure that enough space is available for atomic writes,
- as required by POSIX. Subsequent writes with size > PIPE_BUF
- can still block, but most (all?) UNIX variants seem to work
- this way (e.g., BSD, Linux, Solaris). */
- else if (fpli.WriteQuotaAvailable >= PIPE_BUF)
- {
- select_printf ("%s, ready for write: size %lu, avail %lu",
- fh->get_name (),
- fpli.OutboundQuota,
- fpli.WriteQuotaAvailable);
- gotone += s->write_ready = true;
- }
- /* If we somehow inherit a tiny pipe (size < PIPE_BUF), then consider
- the pipe writable only if it is completely empty, to minimize the
- probability that a subsequent write will block. */
- else if (fpli.OutboundQuota < PIPE_BUF &&
- fpli.WriteQuotaAvailable == fpli.OutboundQuota)
- {
- select_printf ("%s, tiny pipe: size %lu, avail %lu",
- fh->get_name (),
- fpli.OutboundQuota,
- fpli.WriteQuotaAvailable);
- gotone += s->write_ready = true;
- }
- }
+ {
+ /* We don't worry about the guard mutex, because that only applies
+ when from_select is false, and peek_pipe is never called that
+ way for writes. */
+
+ IO_STATUS_BLOCK iosb = {0};
+ FILE_PIPE_LOCAL_INFORMATION fpli = {0};
+
+ if (NtQueryInformationFile (h,
+ &iosb,
+ &fpli,
+ sizeof (fpli),
+ FilePipeLocalInformation))
+ {
+ /* If NtQueryInformationFile fails, optimistically assume the
+ pipe is writable. This could happen on Win9x, because
+ NtQueryInformationFile is not available, or if we somehow
+ inherit a pipe that doesn't permit FILE_READ_ATTRIBUTES
+ access on the write end. */
+ select_printf ("%s, NtQueryInformationFile failed",
+ fh->get_name ());
+ gotone += s->write_ready = true;
+ }
+ /* Ensure that enough space is available for atomic writes,
+ as required by POSIX. Subsequent writes with size > PIPE_BUF
+ can still block, but most (all?) UNIX variants seem to work
+ this way (e.g., BSD, Linux, Solaris). */
+ else if (fpli.WriteQuotaAvailable >= PIPE_BUF)
+ {
+ select_printf ("%s, ready for write: size %lu, avail %lu",
+ fh->get_name (),
+ fpli.OutboundQuota,
+ fpli.WriteQuotaAvailable);
+ gotone += s->write_ready = true;
+ }
+ /* If we somehow inherit a tiny pipe (size < PIPE_BUF), then consider
+ the pipe writable only if it is completely empty, to minimize the
+ probability that a subsequent write will block. */
+ else if (fpli.OutboundQuota < PIPE_BUF &&
+ fpli.WriteQuotaAvailable == fpli.OutboundQuota)
+ {
+ select_printf ("%s, tiny pipe: size %lu, avail %lu",
+ fh->get_name (),
+ fpli.OutboundQuota,
+ fpli.WriteQuotaAvailable);
+ gotone += s->write_ready = true;
+ }
+ }
}
return gotone;