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Sweden-Number/scheduler/thread.c

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/*
* Win32 threads
*
* Copyright 1996 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 <assert.h>
#include <fcntl.h>
#include <sys/types.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "wine/winbase16.h"
#include "thread.h"
#include "task.h"
#include "module.h"
#include "winerror.h"
#include "selectors.h"
#include "winnt.h"
#include "wine/server.h"
#include "stackframe.h"
#include "wine/debug.h"
#include "winnls.h"
WINE_DEFAULT_DEBUG_CHANNEL(thread);
WINE_DECLARE_DEBUG_CHANNEL(relay);
/* TEB of the initial thread */
static TEB initial_teb;
extern struct _PDB current_process;
/***********************************************************************
* THREAD_IdToTEB
*
* Convert a thread id to a TEB, making sure it is valid.
*/
TEB *THREAD_IdToTEB( DWORD id )
{
TEB *ret = NULL;
if (!id || id == GetCurrentThreadId()) return NtCurrentTeb();
SERVER_START_REQ( get_thread_info )
{
req->handle = 0;
req->tid_in = id;
if (!wine_server_call( req )) ret = reply->teb;
}
SERVER_END_REQ;
if (!ret)
{
/* Allow task handles to be used; convert to main thread */
if ( IsTask16( id ) )
{
TDB *pTask = TASK_GetPtr( id );
if (pTask) return pTask->teb;
}
SetLastError( ERROR_INVALID_PARAMETER );
}
return ret;
}
/***********************************************************************
* THREAD_InitTEB
*
* Initialization of a newly created TEB.
*/
static BOOL THREAD_InitTEB( TEB *teb )
{
teb->except = (void *)~0UL;
teb->self = teb;
teb->tibflags = TEBF_WIN32;
teb->exit_code = STILL_ACTIVE;
teb->request_fd = -1;
teb->reply_fd = -1;
teb->wait_fd[0] = -1;
teb->wait_fd[1] = -1;
teb->stack_top = (void *)~0UL;
teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
teb->teb_sel = wine_ldt_alloc_fs();
return (teb->teb_sel != 0);
}
/***********************************************************************
* THREAD_FreeTEB
*
* Free data structures associated with a thread.
* Must be called from the context of another thread.
*/
static void THREAD_FreeTEB( TEB *teb )
{
TRACE("(%p) called\n", teb );
/* Free the associated memory */
wine_ldt_free_fs( teb->teb_sel );
VirtualFree( teb->stack_base, 0, MEM_RELEASE );
}
/***********************************************************************
* THREAD_InitStack
*
* Allocate the stack of a thread.
*/
TEB *THREAD_InitStack( TEB *teb, DWORD stack_size )
{
DWORD old_prot, total_size;
DWORD page_size = getpagesize();
void *base;
/* Allocate the stack */
if (stack_size >= 16*1024*1024)
WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
/* if size is smaller than default, get stack size from parent */
if (stack_size < 1024 * 1024)
{
if (teb)
stack_size = 1024 * 1024; /* no parent */
else
stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base
- SIGNAL_STACK_SIZE - 3 * page_size);
}
/* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */
stack_size += 64 * 1024;
/* Memory layout in allocated block:
*
* size contents
* 1 page NOACCESS guard page
* SIGNAL_STACK_SIZE signal stack
* 1 page NOACCESS guard page
* 1 page PAGE_GUARD guard page
* stack_size normal stack
* 1 page TEB (except for initial thread)
* 1 page debug info (except for initial thread)
*/
stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size;
if (!teb) total_size += 2 * page_size;
if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
return NULL;
if (!teb)
{
teb = (TEB *)((char *)base + total_size - 2 * page_size);
if (!THREAD_InitTEB( teb ))
{
VirtualFree( base, 0, MEM_RELEASE );
return NULL;
}
teb->debug_info = (char *)teb + page_size;
}
teb->stack_low = base;
teb->stack_base = base;
teb->signal_stack = (char *)base + page_size;
teb->stack_top = (char *)base + 3 * page_size + SIGNAL_STACK_SIZE + stack_size;
/* Setup guard pages */
VirtualProtect( base, 1, PAGE_NOACCESS, &old_prot );
VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE, 1, PAGE_NOACCESS, &old_prot );
VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE + page_size, 1,
PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
return teb;
}
/***********************************************************************
* THREAD_Init
*
* Setup the initial thread.
*
* NOTES: The first allocated TEB on NT is at 0x7ffde000.
*/
void THREAD_Init(void)
{
if (!initial_teb.self) /* do it only once */
{
THREAD_InitTEB( &initial_teb );
assert( initial_teb.teb_sel );
initial_teb.Peb = (PEB *)&current_process; /* FIXME */
SYSDEPS_SetCurThread( &initial_teb );
SYSDEPS_InitErrno();
}
}
DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
/***********************************************************************
* THREAD_Start
*
* Start execution of a newly created thread. Does not return.
*/
static void THREAD_Start(void)
{
LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
if (TRACE_ON(relay))
DPRINTF("%04lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func );
__TRY
{
MODULE_DllThreadAttach( NULL );
ExitThread( func( NtCurrentTeb()->entry_arg ) );
}
__EXCEPT(UnhandledExceptionFilter)
{
TerminateThread( GetCurrentThread(), GetExceptionCode() );
}
__ENDTRY
}
/***********************************************************************
* CreateThread (KERNEL32.@)
*/
HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack,
LPTHREAD_START_ROUTINE start, LPVOID param,
DWORD flags, LPDWORD id )
{
HANDLE handle = 0;
TEB *teb;
DWORD tid = 0;
int request_pipe[2];
if (pipe( request_pipe ) == -1)
{
SetLastError( ERROR_TOO_MANY_OPEN_FILES );
return 0;
}
fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
wine_server_send_fd( request_pipe[0] );
SERVER_START_REQ( new_thread )
{
req->suspend = ((flags & CREATE_SUSPENDED) != 0);
req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
req->request_fd = request_pipe[0];
if (!wine_server_call_err( req ))
{
handle = reply->handle;
tid = reply->tid;
}
close( request_pipe[0] );
}
SERVER_END_REQ;
if (!handle || !(teb = THREAD_InitStack( NULL, stack )))
{
close( request_pipe[1] );
return 0;
}
teb->Peb = NtCurrentTeb()->Peb;
teb->tid = tid;
teb->request_fd = request_pipe[1];
teb->entry_point = start;
teb->entry_arg = param;
teb->startup = THREAD_Start;
teb->htask16 = GetCurrentTask();
if (id) *id = tid;
if (SYSDEPS_SpawnThread( teb ) == -1)
{
CloseHandle( handle );
close( request_pipe[1] );
THREAD_FreeTEB( teb );
return 0;
}
return handle;
}
/***********************************************************************
* ExitThread [KERNEL32.@] Ends a thread
*
* RETURNS
* None
*/
void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
{
BOOL last;
SERVER_START_REQ( terminate_thread )
{
/* send the exit code to the server */
req->handle = GetCurrentThread();
req->exit_code = code;
wine_server_call( req );
last = reply->last;
}
SERVER_END_REQ;
if (last)
{
LdrShutdownProcess();
exit( code );
}
else
{
LdrShutdownThread();
if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
SYSDEPS_ExitThread( code );
}
}
/***********************************************************************
* OpenThread Retrieves a handle to a thread from its thread id
*
* RETURNS
* None
*/
HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
{
HANDLE ret = 0;
SERVER_START_REQ( open_thread )
{
req->tid = dwThreadId;
req->access = dwDesiredAccess;
req->inherit = bInheritHandle;
if (!wine_server_call_err( req )) ret = reply->handle;
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* TerminateThread [KERNEL32.@] Terminates a thread
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI TerminateThread( HANDLE handle, /* [in] Handle to thread */
DWORD exit_code) /* [in] Exit code for thread */
{
NTSTATUS status = NtTerminateThread( handle, exit_code );
if (status) SetLastError( RtlNtStatusToDosError(status) );
return !status;
}
/**********************************************************************
* GetExitCodeThread (KERNEL32.@)
*
* Gets termination status of thread.
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI GetExitCodeThread(
HANDLE hthread, /* [in] Handle to thread */
LPDWORD exitcode) /* [out] Address to receive termination status */
{
THREAD_BASIC_INFORMATION info;
NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
&info, sizeof(info), NULL );
if (status)
{
SetLastError( RtlNtStatusToDosError(status) );
return FALSE;
}
if (exitcode) *exitcode = info.ExitStatus;
return TRUE;
}
/* callback for QueueUserAPC */
static void CALLBACK call_user_apc( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3 )
{
PAPCFUNC func = (PAPCFUNC)arg1;
func( arg2 );
}
/***********************************************************************
* QueueUserAPC (KERNEL32.@)
*/
DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
{
NTSTATUS status = NtQueueApcThread( hthread, call_user_apc, (ULONG_PTR)func, data, 0 );
if (status) SetLastError( RtlNtStatusToDosError(status) );
return !status;
}
/***********************************************************************
* ProcessIdToSessionId (KERNEL32.@)
* This function is available on Terminal Server 4SP4 and Windows 2000
*/
BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
{
/* According to MSDN, if the calling process is not in a terminal
* services environment, then the sessionid returned is zero.
*/
*sessionid_ptr = 0;
return TRUE;
}
#ifdef __i386__
/***********************************************************************
* SetLastError (KERNEL.147)
* SetLastError (KERNEL32.@)
*/
/* void WINAPI SetLastError( DWORD error ); */
__ASM_GLOBAL_FUNC( SetLastError,
"movl 4(%esp),%eax\n\t"
".byte 0x64\n\t"
"movl %eax,0x60\n\t"
"ret $4" );
/***********************************************************************
* GetLastError (KERNEL.148)
* GetLastError (KERNEL32.@)
*/
/* DWORD WINAPI GetLastError(void); */
__ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
/***********************************************************************
* GetCurrentProcessId (KERNEL.471)
* GetCurrentProcessId (KERNEL32.@)
*/
/* DWORD WINAPI GetCurrentProcessId(void) */
__ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
/***********************************************************************
* GetCurrentThreadId (KERNEL.462)
* GetCurrentThreadId (KERNEL32.@)
*/
/* DWORD WINAPI GetCurrentThreadId(void) */
__ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
#else /* __i386__ */
/**********************************************************************
* SetLastError (KERNEL.147)
* SetLastError (KERNEL32.@)
*
* Sets the last-error code.
*/
void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
{
NtCurrentTeb()->last_error = error;
}
/**********************************************************************
* GetLastError (KERNEL.148)
* GetLastError (KERNEL32.@)
*
* Returns last-error code.
*/
DWORD WINAPI GetLastError(void)
{
return NtCurrentTeb()->last_error;
}
/***********************************************************************
* GetCurrentProcessId (KERNEL.471)
* GetCurrentProcessId (KERNEL32.@)
*
* Returns process identifier.
*/
DWORD WINAPI GetCurrentProcessId(void)
{
return (DWORD)NtCurrentTeb()->pid;
}
/***********************************************************************
* GetCurrentThreadId (KERNEL.462)
* GetCurrentThreadId (KERNEL32.@)
*
* Returns thread identifier.
*/
DWORD WINAPI GetCurrentThreadId(void)
{
return NtCurrentTeb()->tid;
}
#endif /* __i386__ */
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