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/*
* fiber1_win32.c
*
* $Id$
*
* Win32 Native implementation for fibers
* Use this instead of fiber[12]_generic.c
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2012 OpenLink Software
*
* This project is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; only version 2 of the License, dated June 1991.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*/
#include "thread_int.h"
typedef VOID (WINAPI *PFIBER_START_ROUTINE)(LPVOID lpFiberParameter);
typedef PFIBER_START_ROUTINE LPFIBER_START_ROUTINE;
WINBASEAPI LPVOID WINAPI CreateFiber(
DWORD dwStackSize,
LPFIBER_START_ROUTINE lpStartAddress,
LPVOID lpParameter);
WINBASEAPI VOID WINAPI DeleteFiber (LPVOID lpFiber);
WINBASEAPI LPVOID WINAPI ConvertThreadToFiber (LPVOID lpParameter);
WINBASEAPI VOID WINAPI SwitchToFiber (LPVOID lpFiber);
WINBASEAPI BOOL WINAPI SwitchToThread (VOID);
unsigned long context_switches;
static void WINAPI
_fiber_start (void *param)
{
auto unsigned int marker = THREAD_STACK_MARKER;
thread_t *thr = (thread_t *) param;
int rc;
thr->thr_stack_marker = ▮
/* Store the context so we can easily restart a dead fiber */
setjmp (thr->thr_init_context);
rc = (*thr->thr_initial_function) (thr->thr_initial_argument);
/* Fiber died, put it on the dead queue */
thread_exit (rc);
/* We should NEVER come here */
GPF_T;
}
void
_fiber_switch (thread_t *new_thread)
{
context_switches++;
_current_fiber = new_thread;
SwitchToFiber (new_thread->thr_handle);
}
void
_fiber_for_thread (thread_t *self, unsigned long stack_size)
{
static int init_done;
self->thr_stack_size = stack_size;
if (init_done == 0)
{
init_done = 1;
self->thr_handle = ConvertThreadToFiber (NULL);
}
else
self->thr_handle = CreateFiber (stack_size, _fiber_start, self);
assert (self->thr_handle != NULL);
}
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