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* exceptions.cc (setup_handler): Always relinquish lock after we've

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interrupted.
* fhandler.cc: Move pipe methods to pipe.cc.
* fhandler.h (fhandler_pipe): Add new methods.
* fork.cc (sync_with_parent): Make error messages more informative.
* pipe.cc (fhandler_pipe::fhandler_pipe): Move here from fhandler.cc.
(fhandler_pipe::lseek): Ditto.
(fhandler_pipe::set_close_on_exec): New method.
(fhandler_pipe::read): Ditto.
(fhandler_pipe::close): Ditto.
(fhandler_pipe::dup): Ditto.
(make_pipe): Create the guard mutex on the read side of the pipe.
* select.cc (peek_pipe): Use guard_mutex to discover if we have the right to
read on this pipe.
(fhandler_pipe::readh_for_read): Pass the read pipe guard mutex to peek_pipe.
* syscalls.cc (_read): Always detect signal catchers, for now.
* debug.cc (makethread): Eliminate hack to make thread inheritable.
* sigproc.cc (subproc_init): Don't use hack to make thread inheritable.
This commit is contained in:
Christopher Faylor
2001-09-22 16:55:02 +00:00
parent 142920f65a
commit 5e733918c0
10 changed files with 120 additions and 56 deletions
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55
winsup/cygwin/pipe.cc
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@@ -19,6 +19,60 @@ details. */
#include "cygheap.h"
#include "thread.h"
fhandler_pipe::fhandler_pipe (const char *name, DWORD devtype) :
fhandler_base (devtype, name), guard (0)
{
set_cb (sizeof *this);
}
off_t
fhandler_pipe::lseek (off_t offset, int whence)
{
debug_printf ("(%d, %d)", offset, whence);
set_errno (ESPIPE);
return -1;
}
void
fhandler_pipe::set_close_on_exec (int val)
{
this->fhandler_base::set_close_on_exec (val);
set_inheritance (guard, val);
}
int
fhandler_pipe::read (void *in_ptr, size_t in_len)
{
int res = this->fhandler_base::read (in_ptr, in_len);
ReleaseMutex (guard);
return res;
}
int fhandler_pipe::close ()
{
int res = this->fhandler_base::close ();
if (guard)
CloseHandle (guard);
return res;
}
int
fhandler_pipe::dup (fhandler_base *child)
{
int res = this->fhandler_base::dup (child);
if (res)
return res;
fhandler_pipe *ftp = (fhandler_pipe *) child;
if (guard == NULL)
ftp->guard = NULL;
else if (!DuplicateHandle (hMainProc, guard, hMainProc, &ftp->guard, 0, 1,
DUPLICATE_SAME_ACCESS))
return -1;
return 0;
}
static int
make_pipe (int fildes[2], unsigned int psize, int mode)
{
@@ -53,6 +107,7 @@ make_pipe (int fildes[2], unsigned int psize, int mode)
fildes[1] = fdw;
res = 0;
fhr->create_guard (sa);
}
syscall_printf ("%d = make_pipe ([%d, %d], %d, %p)", res, fdr, fdw, psize, mode);