160 lines
3.8 KiB
C++
160 lines
3.8 KiB
C++
/* 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 "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 (_GLOBAL_REENT)
|
|
{
|
|
local_clib._stdin = _GLOBAL_REENT->_stdin;
|
|
local_clib._stdout = _GLOBAL_REENT->_stdout;
|
|
local_clib._stderr = _GLOBAL_REENT->_stderr;
|
|
local_clib.__sdidinit = _GLOBAL_REENT->__sdidinit ? -1 : 0;
|
|
local_clib.__cleanup = _GLOBAL_REENT->__cleanup;
|
|
local_clib.__sglue._niobs = 3;
|
|
local_clib.__sglue._iobs = &_GLOBAL_REENT->__sf[0];
|
|
}
|
|
}
|
|
|
|
thread_id = GetCurrentThreadId ();
|
|
initialized = CYGTLS_INITIALIZED;
|
|
errno_addr = &(local_clib._errno);
|
|
locals.cw_timer = NULL;
|
|
|
|
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;
|
|
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);
|
|
}
|
|
}
|
|
|
|
#ifdef __x86_64__
|
|
void san::leave ()
|
|
{
|
|
/* Restore tls_pathbuf counters in case of error. */
|
|
_my_tls.locals.pathbufs._counters = _cnt;
|
|
_my_tls.andreas = _clemente;
|
|
}
|
|
#endif
|