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/* cygtls.cc
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#define USE_SYS_TYPES_FD_SET
#include "cygtls.h"
#include <syslog.h>
#include <stdlib.h>
#include "path.h"
#include "fhandler.h"
#include "dtable.h"
#include "create_posix_thread.h"
#include "cygheap.h"
#include "sigproc.h"
#include "exception.h"
/* Two calls to get the stack right... */
void
_cygtls::call (DWORD (*func) (void *, void *), void *arg)
{
char buf[__CYGTLS_PADSIZE__];
/* Initialize this thread's ability to respond to things like
SIGSEGV or SIGFPE. */
exception protect;
_my_tls.call2 (func, arg, buf);
}
void
_cygtls::call2 (DWORD (*func) (void *, void *), void *arg, void *buf)
{
/* If func is pthread_wrapper, the final stack hasn't been set up yet.
This only happens in pthread_wrapper itself. Thus it doesn't make
sense to call init_thread or perform BLODA detection. pthread_wrapper
eventually calls init_thread by itself. */
if ((void *) func != (void *) pthread_wrapper)
init_thread (buf, func);
DWORD res = func (arg, buf);
remove (INFINITE);
/* Don't call ExitThread on the main thread since we may have been
dynamically loaded. */
if ((void *) func != (void *) dll_crt0_1
&& (void *) func != (void *) dll_dllcrt0_1)
ExitThread (res);
}
void
_cygtls::init_thread (void *x, DWORD (*func) (void *, void *))
{
if (x)
{
memset (this, 0, sizeof (*this));
_REENT_INIT_PTR (&local_clib);
stackptr = stack;
altstack.ss_flags = SS_DISABLE;
if (_REENT_CLEANUP(_GLOBAL_REENT))
local_clib.__cleanup = _cygtls::cleanup_early;
}
thread_id = GetCurrentThreadId ();
initialized = CYGTLS_INITIALIZED;
errno_addr = &(local_clib._errno);
locals.cw_timer = NULL;
locals.pathbufs.clear ();
if ((void *) func == (void *) cygthread::stub
|| (void *) func == (void *) cygthread::simplestub)
return;
cygheap->add_tls (this);
}
void
_cygtls::fixup_after_fork ()
{
if (sig)
{
pop ();
sig = 0;
}
stacklock = spinning = 0;
signal_arrived = NULL;
locals.select.sockevt = NULL;
locals.cw_timer = NULL;
locals.pathbufs.clear ();
wq.thread_ev = NULL;
}
#define free_local(x) \
if (locals.x) \
{ \
free (locals.x); \
locals.x = NULL; \
}
void
_cygtls::remove (DWORD wait)
{
initialized = 0;
if (exit_state >= ES_FINAL)
return;
debug_printf ("wait %u", wait);
HANDLE mutex = cygheap->remove_tls (this);
remove_wq (wait);
/* FIXME: Need some sort of atthreadexit function to allow things like
select to control this themselves. */
remove_pending_sigs ();
if (signal_arrived)
{
HANDLE h = signal_arrived;
signal_arrived = NULL;
CloseHandle (h);
}
/* Close handle and free memory used by select. */
if (locals.select.sockevt)
{
CloseHandle (locals.select.sockevt);
locals.select.sockevt = NULL;
free_local (select.ser_num);
free_local (select.w4);
}
/* Free memory used by network functions. */
free_local (ntoa_buf);
free_local (protoent_buf);
free_local (servent_buf);
free_local (hostent_buf);
/* Free temporary TLS path buffers. */
locals.pathbufs.destroy ();
/* Close timer handle. */
if (locals.cw_timer)
NtClose (locals.cw_timer);
if (mutex)
{
ReleaseMutex (mutex);
CloseHandle (mutex);
}
}
void
_cygtls::cleanup_early (struct _reent *)
{
/* Do nothing */
}
void san::leave ()
{
/* Restore tls_pathbuf counters in case of error. */
_my_tls.locals.pathbufs._counters = _cnt;
_my_tls.andreas = _clemente;
}
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