JehanneOS/newlib
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Throughout, remove "include <errno.h>" from files which already include

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cygerrno.h.
* include/cygwin/config.h (__DYNAMIC_REENT__): Define.
* include/cygwin/version.h: Bump API minor version.
* cygwin.din: Export __getreent
* cygerrno.h: Include errno.h.  Fix places where _impure_ptr is used directly
to store the errno value.
* debug.cc (__set_errno): Ditto.
* errno.cc: Remove _RRENT_ONLY define to get errno.cc compiled.
* signal.cc: Rename _reent_clib to _REENT throughout.
* thread.h (reent_clib): Remove prototype.
* thread.cc (reent_clib): Rename reent_clib to __getreent.  Return _impure_ptr
until MTinterface is initialized.
(reent_winsup): Fix a possible SEGV when _r == NULL.  Return NULL instead.
* MTinterface::fixup_after_fork: Switch reent back to _impure_ptr to keep
signal handling running when fork is called from a thread other than the
mainthread.
This commit is contained in:
Christopher Faylor
2003-06-16 03:24:13 +00:00
parent 753d031f1f
commit c433f4617f
83 changed files with 65 additions and 91 deletions
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35
winsup/cygwin/thread.cc
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@ -45,16 +45,21 @@ details. */
extern int threadsafe;
struct _reent *
_reent_clib ()
extern "C" struct _reent *
__getreent ()
{
struct __reent_t *_r =
(struct __reent_t *) MT_INTERFACE->reent_key.get ();
#ifdef _CYG_THREAD_FAILSAFE
if (_r == 0)
system_printf ("local thread storage not inited");
{
#ifdef _CYG_THREAD_FAILSAFE
system_printf ("local thread storage not inited");
#endif
/* Return _impure_ptr as long as MTinterface is not initialized */
return _impure_ptr;
}
return _r->_clib;
}
@ -64,10 +69,14 @@ _reent_winsup ()
struct __reent_t *_r =
(struct __reent_t *) MT_INTERFACE->reent_key.get ();
#ifdef _CYG_THREAD_FAILSAFE
if (_r == 0)
system_printf ("local thread storage not inited");
{
#ifdef _CYG_THREAD_FAILSAFE
system_printf ("local thread storage not inited");
#endif
return NULL;
}
return _r->_winsup;
}
@ -212,6 +221,20 @@ MTinterface::fixup_after_fork (void)
{
pthread_key::fixup_after_fork ();
#ifndef __SIGNALS_ARE_MULTITHREADED__
/* As long as the signal handling not multithreaded
switch reents storage back to _impure_ptr for the mainthread
to support fork from threads other than the mainthread */
struct _reent *reent_old = __getreent ();
if (reent_old && _impure_ptr != reent_old)
*_impure_ptr = *reent_old;
reents._clib = _impure_ptr;
reents._winsup = &winsup_reent;
winsup_reent._process_logmask = LOG_UPTO (LOG_DEBUG);
reent_key.set (&reents);
#endif
threadcount = 1;
pthread::init_mainthread ();