332 lines
9.1 KiB
C
332 lines
9.1 KiB
C
/*
|
|
* System-dependent scheduler support
|
|
*
|
|
* Copyright 1998 Alexandre Julliard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#ifdef HAVE_SYS_SYSCALL_H
|
|
# include <sys/syscall.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_LWP_H
|
|
# include <sys/lwp.h>
|
|
#endif
|
|
#ifdef HAVE_UCONTEXT_H
|
|
# include <ucontext.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_MMAN_H
|
|
#include <sys/mman.h>
|
|
#endif
|
|
#include "thread.h"
|
|
#include "wine/server.h"
|
|
#include "winbase.h"
|
|
#include "wine/winbase16.h"
|
|
#include "wine/exception.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(thread);
|
|
|
|
#if defined(linux) || defined(HAVE_CLONE)
|
|
# ifdef HAVE_SCHED_H
|
|
# include <sched.h>
|
|
# endif
|
|
# ifndef CLONE_VM
|
|
# define CLONE_VM 0x00000100
|
|
# define CLONE_FS 0x00000200
|
|
# define CLONE_FILES 0x00000400
|
|
# define CLONE_SIGHAND 0x00000800
|
|
# define CLONE_PID 0x00001000
|
|
# endif /* CLONE_VM */
|
|
#endif /* linux || HAVE_CLONE */
|
|
|
|
extern void SELECTOR_FreeFs(void);
|
|
|
|
struct thread_cleanup_info
|
|
{
|
|
void *stack_base;
|
|
int stack_size;
|
|
int status;
|
|
};
|
|
|
|
/* temporary stacks used on thread exit */
|
|
#define TEMP_STACK_SIZE 1024
|
|
#define NB_TEMP_STACKS 8
|
|
static char temp_stacks[NB_TEMP_STACKS][TEMP_STACK_SIZE];
|
|
static LONG next_temp_stack; /* next temp stack to use */
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_SetCurThread
|
|
*
|
|
* Make 'thread' the current thread.
|
|
*/
|
|
void SYSDEPS_SetCurThread( TEB *teb )
|
|
{
|
|
#if defined(__i386__)
|
|
/* On the i386, the current thread is in the %fs register */
|
|
__set_fs( teb->teb_sel );
|
|
#elif defined(HAVE__LWP_CREATE)
|
|
/* On non-i386 Solaris, we use the LWP private pointer */
|
|
_lwp_setprivate( teb );
|
|
#endif
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* call_on_thread_stack
|
|
*
|
|
* Call a function once we switched to the thread stack.
|
|
*/
|
|
static void call_on_thread_stack( void *func )
|
|
{
|
|
__TRY
|
|
{
|
|
void (*funcptr)(void) = func;
|
|
funcptr();
|
|
}
|
|
__EXCEPT(UnhandledExceptionFilter)
|
|
{
|
|
TerminateThread( GetCurrentThread(), GetExceptionCode() );
|
|
}
|
|
__ENDTRY
|
|
SYSDEPS_ExitThread(0); /* should never get here */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* get_temp_stack
|
|
*
|
|
* Get a temporary stack address to run the thread exit code on.
|
|
*/
|
|
inline static char *get_temp_stack(void)
|
|
{
|
|
unsigned int next = InterlockedExchangeAdd( &next_temp_stack, 1 );
|
|
return temp_stacks[next % NB_TEMP_STACKS];
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* cleanup_thread
|
|
*
|
|
* Cleanup the remains of a thread. Runs on a temporary stack.
|
|
*/
|
|
static void cleanup_thread( void *ptr )
|
|
{
|
|
/* copy the info structure since it is on the stack we will free */
|
|
struct thread_cleanup_info info = *(struct thread_cleanup_info *)ptr;
|
|
munmap( info.stack_base, info.stack_size );
|
|
SELECTOR_FreeFs();
|
|
#ifdef HAVE__LWP_CREATE
|
|
_lwp_exit();
|
|
#endif
|
|
_exit( info.status );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_StartThread
|
|
*
|
|
* Startup routine for a new thread.
|
|
*/
|
|
static void SYSDEPS_StartThread( TEB *teb )
|
|
{
|
|
SYSDEPS_SetCurThread( teb );
|
|
CLIENT_InitThread();
|
|
SIGNAL_Init();
|
|
__TRY
|
|
{
|
|
teb->startup();
|
|
}
|
|
__EXCEPT(UnhandledExceptionFilter)
|
|
{
|
|
TerminateThread( GetCurrentThread(), GetExceptionCode() );
|
|
}
|
|
__ENDTRY
|
|
SYSDEPS_ExitThread(0); /* should never get here */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_SpawnThread
|
|
*
|
|
* Start running a new thread.
|
|
* Return -1 on error, 0 if OK.
|
|
*/
|
|
int SYSDEPS_SpawnThread( TEB *teb )
|
|
{
|
|
#ifdef ERRNO_LOCATION
|
|
|
|
#if defined(linux) || defined(HAVE_CLONE)
|
|
const int flags = CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD;
|
|
if (clone( (int (*)(void *))SYSDEPS_StartThread, teb->stack_top, flags, teb ) < 0)
|
|
return -1;
|
|
if (!(flags & CLONE_FILES)) close( teb->request_fd ); /* close the child socket in the parent */
|
|
return 0;
|
|
#endif
|
|
|
|
#ifdef HAVE_RFORK
|
|
const int flags = RFPROC | RFMEM; /*|RFFDG*/
|
|
void **sp = (void **)teb->stack_top;
|
|
*--sp = teb;
|
|
*--sp = 0;
|
|
*--sp = SYSDEPS_StartThread;
|
|
__asm__ __volatile__(
|
|
"pushl %2;\n\t" /* flags */
|
|
"pushl $0;\n\t" /* 0 ? */
|
|
"movl %1,%%eax;\n\t" /* SYS_rfork */
|
|
".byte 0x9a; .long 0; .word 7;\n\t" /* lcall 7:0... FreeBSD syscall */
|
|
"cmpl $0, %%edx;\n\t"
|
|
"je 1f;\n\t"
|
|
"movl %0,%%esp;\n\t" /* child -> new thread */
|
|
"ret;\n"
|
|
"1:\n\t" /* parent -> caller thread */
|
|
"addl $8,%%esp" :
|
|
: "r" (sp), "g" (SYS_rfork), "g" (flags)
|
|
: "eax", "edx");
|
|
if (flags & RFFDG) close( teb->request_fd ); /* close the child socket in the parent */
|
|
return 0;
|
|
#endif
|
|
|
|
#ifdef HAVE__LWP_CREATE
|
|
ucontext_t context;
|
|
_lwp_makecontext( &context, (void(*)(void *))SYSDEPS_StartThread, teb,
|
|
NULL, teb->stack_base, (char *)teb->stack_top - (char *)teb->stack_base );
|
|
if ( _lwp_create( &context, 0, NULL ) )
|
|
return -1;
|
|
return 0;
|
|
#endif
|
|
|
|
#endif /* ERRNO_LOCATION */
|
|
|
|
FIXME("CreateThread: stub\n" );
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_CallOnStack
|
|
*/
|
|
void SYSDEPS_CallOnStack( void (*func)(LPVOID), LPVOID arg ) WINE_NORETURN;
|
|
#ifdef __i386__
|
|
__ASM_GLOBAL_FUNC( SYSDEPS_CallOnStack,
|
|
"movl 4(%esp),%ecx\n\t" /* func */
|
|
"movl 8(%esp),%edx\n\t" /* arg */
|
|
".byte 0x64\n\tmovl 0x04,%esp\n\t" /* teb->stack_top */
|
|
"pushl %edx\n\t"
|
|
"xorl %ebp,%ebp\n\t"
|
|
"call *%ecx\n\t"
|
|
"int $3" /* we never return here */ );
|
|
#else
|
|
void SYSDEPS_CallOnStack( void (*func)(LPVOID), LPVOID arg )
|
|
{
|
|
func( arg );
|
|
while(1); /* avoid warning */
|
|
}
|
|
#endif
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_SwitchToThreadStack
|
|
*/
|
|
void SYSDEPS_SwitchToThreadStack( void (*func)(void) )
|
|
{
|
|
SYSDEPS_CallOnStack( call_on_thread_stack, func );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_ExitThread
|
|
*
|
|
* Exit a running thread; must not return.
|
|
*/
|
|
void SYSDEPS_ExitThread( int status )
|
|
{
|
|
TEB *teb = NtCurrentTeb();
|
|
struct thread_cleanup_info info;
|
|
MEMORY_BASIC_INFORMATION meminfo;
|
|
|
|
FreeSelector16( teb->stack_sel );
|
|
VirtualQuery( teb->stack_top, &meminfo, sizeof(meminfo) );
|
|
info.stack_base = meminfo.AllocationBase;
|
|
info.stack_size = meminfo.RegionSize + ((char *)teb->stack_top - (char *)meminfo.AllocationBase);
|
|
info.status = status;
|
|
|
|
SIGNAL_Reset();
|
|
|
|
VirtualFree( teb->stack_base, 0, MEM_RELEASE | MEM_SYSTEM );
|
|
close( teb->wait_fd[0] );
|
|
close( teb->wait_fd[1] );
|
|
close( teb->reply_fd );
|
|
close( teb->request_fd );
|
|
teb->stack_low = get_temp_stack();
|
|
teb->stack_top = teb->stack_low + TEMP_STACK_SIZE;
|
|
SYSDEPS_CallOnStack( cleanup_thread, &info );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_AbortThread
|
|
*
|
|
* Same as SYSDEPS_ExitThread, but must not do anything that requires a server call.
|
|
*/
|
|
void SYSDEPS_AbortThread( int status )
|
|
{
|
|
SIGNAL_Reset();
|
|
close( NtCurrentTeb()->wait_fd[0] );
|
|
close( NtCurrentTeb()->wait_fd[1] );
|
|
close( NtCurrentTeb()->reply_fd );
|
|
close( NtCurrentTeb()->request_fd );
|
|
#ifdef HAVE__LWP_CREATE
|
|
_lwp_exit();
|
|
#endif
|
|
for (;;) /* avoid warning */
|
|
_exit( status );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* NtCurrentTeb (NTDLL.@)
|
|
*
|
|
* This will crash and burn if called before threading is initialized
|
|
*/
|
|
#if defined(__i386__) && defined(__GNUC__)
|
|
__ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
|
|
#elif defined(__i386__) && defined(_MSC_VER)
|
|
__declspec(naked) struct _TEB * WINAPI NtCurrentTeb(void)
|
|
{
|
|
__asm mov eax, fs:[0x18];
|
|
__asm ret;
|
|
}
|
|
#elif defined(HAVE__LWP_CREATE)
|
|
/***********************************************************************
|
|
* NtCurrentTeb (NTDLL.@)
|
|
*/
|
|
struct _TEB * WINAPI NtCurrentTeb(void)
|
|
{
|
|
extern void *_lwp_getprivate(void);
|
|
return (struct _TEB *)_lwp_getprivate();
|
|
}
|
|
#else
|
|
# error NtCurrentTeb not defined for this architecture
|
|
#endif /* __i386__ */
|