332600d80c
* debug.cc (threadname_init): Pass name of lock as arg 2 of new_muto. * malloc.cc (malloc_init): Ditto. * sigproc.cc (sigproc_init): Ditto. * exceptions.cc (events_init): Ditto. (call_handler): Eliminate special case for hExeced. Report locked thread in debugging output. * fhandler.cc (fhandker_pipe::fhandler_pipe): Propagate device type to base class. * fhandler.h (fhandler_pipe): Ditto. * hinfo.cc (hinfo::build_fhandler): Pass specific type of pipe to constructor. * spawn.cc (spawn_guts): Eliminate dependency on signal when waiting for subprocess. * strace.cc: Remove obsolete #ifdef. * sync.cc (muto::muto): Save the name of the muto. (muto:~muto): Also release the muto. * sync.h: Add a muto name field. * select.cc (peek_pipe): Avoid doing a PeekNamedPipe on the write end of a pipe.
94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/* pipe.cc: pipe for Cygwin.
|
|
|
|
Copyright 1996, 1998, 1999, 2000 Cygnus Solutions.
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
#include <unistd.h>
|
|
#include <sys/fcntl.h>
|
|
#include <errno.h>
|
|
#include "winsup.h"
|
|
|
|
static int
|
|
make_pipe (int fildes[2], unsigned int psize, int mode)
|
|
{
|
|
SetResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," make_pipe");
|
|
|
|
HANDLE r, w;
|
|
int fdr, fdw;
|
|
SECURITY_ATTRIBUTES *sa = (mode & O_NOINHERIT) ? &sec_none_nih : &sec_none;
|
|
|
|
if ((fdr = dtable.find_unused_handle ()) < 0)
|
|
set_errno (ENMFILE);
|
|
else if ((fdw = dtable.find_unused_handle (fdr + 1)) < 0)
|
|
set_errno ( ENMFILE);
|
|
else if (!CreatePipe (&r, &w, sa, psize))
|
|
__seterrno ();
|
|
else
|
|
{
|
|
fhandler_base *fhr = dtable.build_fhandler (fdr, FH_PIPER, "/dev/piper");
|
|
fhandler_base *fhw = dtable.build_fhandler (fdw, FH_PIPEW, "/dev/pipew");
|
|
|
|
int binmode = mode & O_TEXT ? 0 : 1;
|
|
fhr->init (r, GENERIC_READ, binmode);
|
|
fhw->init (w, GENERIC_WRITE, binmode);
|
|
if (mode & O_NOINHERIT)
|
|
{
|
|
fhr->set_close_on_exec_flag (1);
|
|
fhw->set_close_on_exec_flag (1);
|
|
}
|
|
|
|
fildes[0] = fdr;
|
|
fildes[1] = fdw;
|
|
|
|
debug_printf ("0 = pipe (%p) (%d:%p, %d:%p)", fildes,
|
|
fdr, fhr->get_handle (), fdw, fhw->get_handle ());
|
|
|
|
ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," make_pipe");
|
|
return 0;
|
|
}
|
|
|
|
syscall_printf ("-1 = pipe (%p)", fildes);
|
|
ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," make_pipe");
|
|
return -1;
|
|
}
|
|
|
|
extern "C" int
|
|
pipe (int filedes[2])
|
|
{
|
|
return make_pipe (filedes, 16384, (!__fmode || __fmode == O_BINARY) ? O_BINARY : O_TEXT);
|
|
}
|
|
|
|
extern "C" int
|
|
_pipe (int filedes[2], unsigned int psize, int mode)
|
|
{
|
|
int res = make_pipe (filedes, psize, mode);
|
|
/* This type of pipe is not interruptible so set the appropriate flag. */
|
|
if (!res)
|
|
dtable[filedes[0]]->set_r_no_interrupt (1);
|
|
return res;
|
|
}
|
|
|
|
int
|
|
dup (int fd)
|
|
{
|
|
int res;
|
|
SetResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," dup");
|
|
|
|
res = dup2 (fd, dtable.find_unused_handle ());
|
|
|
|
ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK," dup");
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
dup2 (int oldfd, int newfd)
|
|
{
|
|
return dtable.dup2 (oldfd, newfd);
|
|
}
|