258 lines
6.7 KiB
C
258 lines
6.7 KiB
C
/*
|
|
* System-dependent scheduler support
|
|
*
|
|
* Copyright 1998 Alexandre Julliard
|
|
*/
|
|
|
|
#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
|
|
#include "thread.h"
|
|
#include "wine/server.h"
|
|
#include "winbase.h"
|
|
#include "wine/exception.h"
|
|
#include "debugtools.h"
|
|
|
|
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 */
|
|
|
|
/***********************************************************************
|
|
* 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
|
|
}
|
|
|
|
/***********************************************************************
|
|
* 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_ExitThread
|
|
*
|
|
* Exit a running thread; must not return.
|
|
*/
|
|
void SYSDEPS_ExitThread( int status )
|
|
{
|
|
int fd = NtCurrentTeb()->request_fd;
|
|
NtCurrentTeb()->request_fd = -1;
|
|
close( fd );
|
|
#ifdef HAVE__LWP_CREATE
|
|
_lwp_exit();
|
|
#endif
|
|
_exit( status );
|
|
/*
|
|
* It is of course impossible to come here,
|
|
* but it eliminates a compiler warning.
|
|
*/
|
|
exit( status );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_CallOnStack
|
|
*/
|
|
int SYSDEPS_DoCallOnStack( int (*func)(LPVOID), LPVOID arg )
|
|
{
|
|
int retv = 0;
|
|
|
|
__TRY
|
|
{
|
|
retv = func( arg );
|
|
}
|
|
__EXCEPT(UnhandledExceptionFilter)
|
|
{
|
|
TerminateThread( GetCurrentThread(), GetExceptionCode() );
|
|
return 0;
|
|
}
|
|
__ENDTRY
|
|
|
|
return retv;
|
|
}
|
|
|
|
#ifdef __i386__
|
|
int SYSDEPS_CallOnStack( LPVOID stackTop, LPVOID stackLow,
|
|
int (*func)(LPVOID), LPVOID arg );
|
|
__ASM_GLOBAL_FUNC( SYSDEPS_CallOnStack,
|
|
"pushl %ebp\n\t"
|
|
"movl %esp, %ebp\n\t"
|
|
".byte 0x64; pushl 0x04\n\t"
|
|
".byte 0x64; pushl 0x08\n\t"
|
|
"movl 8(%ebp), %esp\n\t"
|
|
"movl 12(%ebp), %eax\n\t"
|
|
".byte 0x64; movl %esp, 0x04\n\t"
|
|
".byte 0x64; movl %eax, 0x08\n\t"
|
|
"pushl 20(%ebp)\n\t"
|
|
"pushl 16(%ebp)\n\t"
|
|
"call " __ASM_NAME("SYSDEPS_DoCallOnStack") "\n\t"
|
|
"leal -8(%ebp), %esp\n\t"
|
|
".byte 0x64; popl 0x08\n\t"
|
|
".byte 0x64; popl 0x04\n\t"
|
|
"popl %ebp\n\t"
|
|
"ret" );
|
|
#else
|
|
int SYSDEPS_CallOnStack( LPVOID stackTop, LPVOID stackLow,
|
|
int (*func)(LPVOID), LPVOID arg )
|
|
{
|
|
return SYSDEPS_DoCallOnStack( func, arg );
|
|
}
|
|
#endif
|
|
|
|
/***********************************************************************
|
|
* SYSDEPS_SwitchToThreadStack
|
|
*/
|
|
void SYSDEPS_SwitchToThreadStack( void (*func)(void) )
|
|
{
|
|
DWORD page_size = getpagesize();
|
|
void *cur_stack = (void *)(((ULONG_PTR)&func + (page_size-1)) & ~(page_size-1));
|
|
|
|
TEB *teb = NtCurrentTeb();
|
|
LPVOID stackTop = teb->stack_top;
|
|
LPVOID stackLow = teb->stack_low;
|
|
|
|
struct rlimit rl;
|
|
|
|
if ( getrlimit(RLIMIT_STACK, &rl) < 0 )
|
|
{
|
|
WARN("Can't get rlimit\n");
|
|
rl.rlim_cur = 8*1024*1024;
|
|
}
|
|
|
|
teb->stack_top = cur_stack;
|
|
teb->stack_low = (char *)cur_stack - rl.rlim_cur;
|
|
|
|
SYSDEPS_CallOnStack( stackTop, stackLow,
|
|
(int (*)(void *))func, NULL );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* NtCurrentTeb (NTDLL.@)
|
|
*
|
|
* This will crash and burn if called before threading is initialized
|
|
*/
|
|
#ifdef __i386__
|
|
__ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
|
|
#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__ */
|