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/* cygtls.h
Copyright 2003 Red Hat, Inc.
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"
#include "thread.h"
#include "cygtls.h"
#include "assert.h"
#include <syslog.h>
static _threadinfo NO_COPY dummy_thread;
_threadinfo NO_COPY *_last_thread = &dummy_thread;
CRITICAL_SECTION NO_COPY _threadinfo::protect_linked_list;
void
_threadinfo::set_state (bool is_exception)
{
initialized = CYGTLS_INITIALIZED + is_exception;
}
void
_threadinfo::reset_exception ()
{
if (initialized == CYGTLS_EXCEPTION)
{
#ifdef DEBUGGING
debug_printf ("resetting stack after an exception stack %p, stackptr %p", stack, stackptr);
#endif
set_state (false);
stackptr--;
}
}
/* Two calls to get the stack right... */
void
_threadinfo::call (DWORD (*func) (void *, void *), void *arg)
{
char buf[CYGTLS_PADSIZE];
call2 (func, arg, buf);
}
void
_threadinfo::call2 (DWORD (*func) (void *, void *), void *arg, void *buf)
{
_my_tls.init_thread (buf);
ExitThread (func (arg, buf));
}
void
_threadinfo::init ()
{
InitializeCriticalSection (&protect_linked_list);
}
void
_threadinfo::init_thread (void *x)
{
if (x)
{
memset (this, 0, sizeof (*this));
stackptr = stack;
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;
local_clib.__cleanup = _GLOBAL_REENT->__cleanup;
}
local_clib._current_locale = "C";
locals.process_logmask = LOG_UPTO (LOG_DEBUG);
}
EnterCriticalSection (&protect_linked_list);
prev = _last_thread;
_last_thread->next = this;
_last_thread = this;
LeaveCriticalSection (&protect_linked_list);
set_state (false);
errno_addr = &(local_clib._errno);
}
void
_threadinfo::remove ()
{
EnterCriticalSection (&protect_linked_list);
if (prev)
{
prev->next = next;
if (next)
next->prev = prev;
if (this == _last_thread)
_last_thread = prev;
prev = next = NULL;
}
LeaveCriticalSection (&protect_linked_list);
}
void
_threadinfo::push (__stack_t addr, bool exception)
{
*stackptr++ = (__stack_t) addr;
set_state (exception);
}
__stack_t
_threadinfo::pop ()
{
#ifdef DEBUGGING
assert (stackptr > stack);
#endif
__stack_t res = *--stackptr;
#ifdef DEBUGGING
*stackptr = 0;
debug_printf ("popped %p, stack %p, stackptr %p", res, stack, stackptr);
#endif
return res;
}
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