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Sweden-Number/scheduler/thread.c

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/*
* Win32 threads
*
* Copyright 1996 Alexandre Julliard
*/
#include "config.h"
#include <assert.h>
#include <fcntl.h>
#include <sys/types.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <unistd.h>
#include "wine/winbase16.h"
#include "thread.h"
#include "process.h"
#include "task.h"
#include "module.h"
#include "global.h"
#include "winerror.h"
#include "heap.h"
#include "selectors.h"
#include "winnt.h"
#include "server.h"
#include "services.h"
#include "stackframe.h"
#include "builtin16.h"
#include "debugtools.h"
#include "winnls.h"
DEFAULT_DEBUG_CHANNEL(thread);
/* TEB of the initial thread */
static TEB initial_teb;
/***********************************************************************
* THREAD_IsWin16
*/
BOOL THREAD_IsWin16( TEB *teb )
{
return !teb || !(teb->tibflags & TEBF_WIN32);
}
/***********************************************************************
* 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
{
struct get_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = -1;
req->tid_in = (void *)id;
if (!server_call_noerr( REQ_GET_THREAD_INFO )) ret = req->teb;
}
SERVER_END_REQ;
if (!ret)
{
/* Allow task handles to be used; convert to main thread */
if ( IsTask16( id ) )
{
TDB *pTask = (TDB *)GlobalLock16( 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->tls_ptr = teb->tls_array;
teb->exit_code = STILL_ACTIVE;
teb->socket = -1;
teb->stack_top = (void *)~0UL;
teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
teb->teb_sel = SELECTOR_AllocBlock( teb, 0x1000, SEGMENT_DATA, TRUE, FALSE );
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 CALLBACK THREAD_FreeTEB( TEB *teb )
{
TRACE("(%p) called\n", teb );
if (teb->cleanup) SERVICE_Delete( teb->cleanup );
/* Free the associated memory */
if (teb->socket != -1) close( teb->socket );
if (teb->stack_sel) SELECTOR_FreeBlock( teb->stack_sel, 1 );
SELECTOR_FreeBlock( teb->teb_sel, 1 );
if (teb->buffer) munmap( (void *)teb->buffer,
(char *)(teb->buffer_info+1) - (char *)teb->buffer );
if (teb->debug_info) HeapFree( GetProcessHeap(), 0, teb->debug_info );
VirtualFree( teb->stack_base, 0, MEM_RELEASE );
}
/***********************************************************************
* THREAD_InitStack
*
* Allocate the stack of a thread.
*/
TEB *THREAD_InitStack( TEB *teb, DWORD stack_size, BOOL alloc_stack16 )
{
DWORD old_prot, total_size;
DWORD page_size = VIRTUAL_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
* 64Kb 16-bit stack (optional)
* 1 page TEB (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 (alloc_stack16) total_size += 0x10000;
if (!teb) total_size += page_size;
if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
return NULL;
if (!teb)
{
teb = (TEB *)((char *)base + total_size - page_size);
if (!THREAD_InitTEB( teb ))
{
VirtualFree( base, 0, MEM_RELEASE );
return NULL;
}
}
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 );
/* Allocate the 16-bit stack selector */
if (alloc_stack16)
{
teb->stack_sel = SELECTOR_AllocBlock( teb->stack_top, 0x10000, SEGMENT_DATA,
FALSE, FALSE );
if (!teb->stack_sel) goto error;
teb->cur_stack = PTR_SEG_OFF_TO_SEGPTR( teb->stack_sel,
0x10000 - sizeof(STACK16FRAME) );
}
return teb;
error:
THREAD_FreeTEB( teb );
return NULL;
}
/***********************************************************************
* 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.process = &current_process;
SYSDEPS_SetCurThread( &initial_teb );
}
}
DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
/***********************************************************************
* THREAD_Create
*
*/
TEB *THREAD_Create( int fd, DWORD stack_size, BOOL alloc_stack16 )
{
TEB *teb;
if ((teb = THREAD_InitStack( NULL, stack_size, alloc_stack16 )))
{
teb->tibflags = (current_process.flags & PDB32_WIN16_PROC) ? 0 : TEBF_WIN32;
teb->process = &current_process;
teb->socket = fd;
fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
TRACE("(%p) succeeded\n", teb);
}
return teb;
}
/***********************************************************************
* THREAD_Start
*
* Start execution of a newly created thread. Does not return.
*/
static void THREAD_Start(void)
{
HANDLE cleanup_object;
LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
/* install cleanup handler */
if (DuplicateHandle( GetCurrentProcess(), GetCurrentThread(),
GetCurrentProcess(), &cleanup_object,
0, FALSE, DUPLICATE_SAME_ACCESS ))
NtCurrentTeb()->cleanup = SERVICE_AddObject( cleanup_object, (PAPCFUNC)THREAD_FreeTEB,
(ULONG_PTR)NtCurrentTeb() );
PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
PE_InitTls();
MODULE_DllThreadAttach( NULL );
ExitThread( func( NtCurrentTeb()->entry_arg ) );
}
/***********************************************************************
* CreateThread (KERNEL32.63)
*/
HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, DWORD stack,
LPTHREAD_START_ROUTINE start, LPVOID param,
DWORD flags, LPDWORD id )
{
int socket, handle = -1;
TEB *teb;
void *tid = 0;
SERVER_START_REQ
{
struct new_thread_request *req = server_alloc_req( sizeof(*req), 0 );
req->suspend = ((flags & CREATE_SUSPENDED) != 0);
req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
if (!server_call_fd( REQ_NEW_THREAD, -1, &socket ))
{
handle = req->handle;
tid = req->tid;
}
}
SERVER_END_REQ;
if (handle == -1) return 0;
if (!(teb = THREAD_Create( socket, stack, TRUE )))
{
close( socket );
return 0;
}
teb->tibflags |= TEBF_WIN32;
teb->entry_point = start;
teb->entry_arg = param;
teb->startup = THREAD_Start;
teb->htask16 = GetCurrentTask();
if (id) *id = (DWORD)tid;
if (SYSDEPS_SpawnThread( teb ) == -1)
{
CloseHandle( handle );
THREAD_FreeTEB( teb );
return 0;
}
return handle;
}
/***********************************************************************
* CreateThread16 (KERNEL.441)
*/
static DWORD CALLBACK THREAD_StartThread16( LPVOID threadArgs )
{
FARPROC16 start = ((FARPROC16 *)threadArgs)[0];
DWORD param = ((DWORD *)threadArgs)[1];
HeapFree( GetProcessHeap(), 0, threadArgs );
((LPDWORD)CURRENT_STACK16)[-1] = param;
return CallTo16Long( start, sizeof(DWORD) );
}
HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
FARPROC16 start, SEGPTR param,
DWORD flags, LPDWORD id )
{
DWORD *threadArgs = HeapAlloc( GetProcessHeap(), 0, 2*sizeof(DWORD) );
if (!threadArgs) return INVALID_HANDLE_VALUE;
threadArgs[0] = (DWORD)start;
threadArgs[1] = (DWORD)param;
return CreateThread( sa, stack, THREAD_StartThread16, threadArgs, flags, id );
}
/***********************************************************************
* ExitThread [KERNEL32.215] Ends a thread
*
* RETURNS
* None
*/
void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
{
BOOL last;
SERVER_START_REQ
{
struct terminate_thread_request *req = server_alloc_req( sizeof(*req), 0 );
/* send the exit code to the server */
req->handle = GetCurrentThread();
req->exit_code = code;
server_call( REQ_TERMINATE_THREAD );
last = req->last;
}
SERVER_END_REQ;
if (last)
{
MODULE_DllProcessDetach( TRUE, (LPVOID)1 );
exit( code );
}
else
{
MODULE_DllThreadDetach( NULL );
if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_KillTask( 0 );
SYSDEPS_ExitThread( code );
}
}
/**********************************************************************
* TlsAlloc [KERNEL32.530] Allocates a TLS index.
*
* Allocates a thread local storage index
*
* RETURNS
* Success: TLS Index
* Failure: 0xFFFFFFFF
*/
DWORD WINAPI TlsAlloc( void )
{
DWORD i, mask, ret = 0;
DWORD *bits = current_process.tls_bits;
EnterCriticalSection( &current_process.crit_section );
if (*bits == 0xffffffff)
{
bits++;
ret = 32;
if (*bits == 0xffffffff)
{
LeaveCriticalSection( &current_process.crit_section );
SetLastError( ERROR_NO_MORE_ITEMS );
return 0xffffffff;
}
}
for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
*bits |= mask;
LeaveCriticalSection( &current_process.crit_section );
return ret + i;
}
/**********************************************************************
* TlsFree [KERNEL32.531] Releases a TLS index.
*
* Releases a thread local storage index, making it available for reuse
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI TlsFree(
DWORD index) /* [in] TLS Index to free */
{
DWORD mask;
DWORD *bits = current_process.tls_bits;
if (index >= 64)
{
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
EnterCriticalSection( &current_process.crit_section );
if (index >= 32) bits++;
mask = (1 << (index & 31));
if (!(*bits & mask)) /* already free? */
{
LeaveCriticalSection( &current_process.crit_section );
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
*bits &= ~mask;
NtCurrentTeb()->tls_array[index] = 0;
/* FIXME: should zero all other thread values */
LeaveCriticalSection( &current_process.crit_section );
return TRUE;
}
/**********************************************************************
* TlsGetValue [KERNEL32.532] Gets value in a thread's TLS slot
*
* RETURNS
* Success: Value stored in calling thread's TLS slot for index
* Failure: 0 and GetLastError returns NO_ERROR
*/
LPVOID WINAPI TlsGetValue(
DWORD index) /* [in] TLS index to retrieve value for */
{
if (index >= 64)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
SetLastError( ERROR_SUCCESS );
return NtCurrentTeb()->tls_array[index];
}
/**********************************************************************
* TlsSetValue [KERNEL32.533] Stores a value in the thread's TLS slot.
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI TlsSetValue(
DWORD index, /* [in] TLS index to set value for */
LPVOID value) /* [in] Value to be stored */
{
if (index >= 64)
{
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
NtCurrentTeb()->tls_array[index] = value;
return TRUE;
}
/***********************************************************************
* SetThreadContext [KERNEL32.670] Sets context of thread.
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI SetThreadContext( HANDLE handle, /* [in] Handle to thread with context */
const CONTEXT *context ) /* [in] Address of context structure */
{
BOOL ret;
SERVER_START_REQ
{
struct set_thread_context_request *req = server_alloc_req( sizeof(*req),
sizeof(*context) );
req->handle = handle;
req->flags = context->ContextFlags;
memcpy( server_data_ptr(req), context, sizeof(*context) );
ret = !server_call( REQ_SET_THREAD_CONTEXT );
}
SERVER_END_REQ;
return ret;
}
/***********************************************************************
* GetThreadContext [KERNEL32.294] Retrieves context of thread.
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI GetThreadContext( HANDLE handle, /* [in] Handle to thread with context */
CONTEXT *context ) /* [out] Address of context structure */
{
BOOL ret;
SERVER_START_REQ
{
struct get_thread_context_request *req = server_alloc_req( sizeof(*req),
sizeof(*context) );
req->handle = handle;
req->flags = context->ContextFlags;
memcpy( server_data_ptr(req), context, sizeof(*context) );
if ((ret = !server_call( REQ_GET_THREAD_CONTEXT )))
memcpy( context, server_data_ptr(req), sizeof(*context) );
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* GetThreadPriority [KERNEL32.296] Returns priority for thread.
*
* RETURNS
* Success: Thread's priority level.
* Failure: THREAD_PRIORITY_ERROR_RETURN
*/
INT WINAPI GetThreadPriority(
HANDLE hthread) /* [in] Handle to thread */
{
INT ret = THREAD_PRIORITY_ERROR_RETURN;
SERVER_START_REQ
{
struct get_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hthread;
req->tid_in = 0;
if (!server_call( REQ_GET_THREAD_INFO )) ret = req->priority;
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* SetThreadPriority [KERNEL32.514] Sets priority for thread.
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI SetThreadPriority(
HANDLE hthread, /* [in] Handle to thread */
INT priority) /* [in] Thread priority level */
{
BOOL ret;
SERVER_START_REQ
{
struct set_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hthread;
req->priority = priority;
req->mask = SET_THREAD_INFO_PRIORITY;
ret = !server_call( REQ_SET_THREAD_INFO );
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* GetThreadPriorityBoost [KERNEL32.877] Returns priority boost for thread.
*
* Always reports that priority boost is disabled.
*
* RETURNS
* Success: TRUE.
* Failure: FALSE
*/
BOOL WINAPI GetThreadPriorityBoost(
HANDLE hthread, /* [in] Handle to thread */
PBOOL pstate) /* [out] pointer to var that receives the boost state */
{
if (pstate) *pstate = FALSE;
return NO_ERROR;
}
/**********************************************************************
* SetThreadPriorityBoost [KERNEL32.893] Sets priority boost for thread.
*
* Priority boost is not implemented. Thsi function always returns
* FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
*
* RETURNS
* Always returns FALSE to indicate a failure
*/
BOOL WINAPI SetThreadPriorityBoost(
HANDLE hthread, /* [in] Handle to thread */
BOOL disable) /* [in] TRUE to disable priority boost */
{
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/**********************************************************************
* SetThreadAffinityMask (KERNEL32.669)
*/
DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
{
DWORD ret;
SERVER_START_REQ
{
struct set_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hThread;
req->affinity = dwThreadAffinityMask;
req->mask = SET_THREAD_INFO_AFFINITY;
ret = !server_call( REQ_SET_THREAD_INFO );
/* FIXME: should return previous value */
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* TerminateThread [KERNEL32.685] 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 */
{
BOOL ret;
SERVER_START_REQ
{
struct get_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hthread;
req->tid_in = 0;
ret = !server_call( REQ_GET_THREAD_INFO );
if (ret && exitcode) *exitcode = req->exit_code;
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* ResumeThread [KERNEL32.587] Resumes a thread.
*
* Decrements a thread's suspend count. When count is zero, the
* execution of the thread is resumed.
*
* RETURNS
* Success: Previous suspend count
* Failure: 0xFFFFFFFF
* Already running: 0
*/
DWORD WINAPI ResumeThread(
HANDLE hthread) /* [in] Identifies thread to restart */
{
DWORD ret = 0xffffffff;
SERVER_START_REQ
{
struct resume_thread_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hthread;
if (!server_call( REQ_RESUME_THREAD )) ret = req->count;
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* SuspendThread [KERNEL32.681] Suspends a thread.
*
* RETURNS
* Success: Previous suspend count
* Failure: 0xFFFFFFFF
*/
DWORD WINAPI SuspendThread(
HANDLE hthread) /* [in] Handle to the thread */
{
DWORD ret = 0xffffffff;
SERVER_START_REQ
{
struct suspend_thread_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hthread;
if (!server_call( REQ_SUSPEND_THREAD )) ret = req->count;
}
SERVER_END_REQ;
return ret;
}
/***********************************************************************
* QueueUserAPC (KERNEL32.566)
*/
DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
{
DWORD ret;
SERVER_START_REQ
{
struct queue_apc_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hthread;
req->func = func;
req->param = (void *)data;
ret = !server_call( REQ_QUEUE_APC );
}
SERVER_END_REQ;
return ret;
}
/**********************************************************************
* GetThreadTimes [KERNEL32.???] Obtains timing information.
*
* NOTES
* What are the fields where these values are stored?
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI GetThreadTimes(
HANDLE thread, /* [in] Specifies the thread of interest */
LPFILETIME creationtime, /* [out] When the thread was created */
LPFILETIME exittime, /* [out] When the thread was destroyed */
LPFILETIME kerneltime, /* [out] Time thread spent in kernel mode */
LPFILETIME usertime) /* [out] Time thread spent in user mode */
{
FIXME("(0x%08x): stub\n",thread);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/**********************************************************************
* VWin32_BoostThreadGroup [KERNEL.535]
*/
VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
{
FIXME("(0x%08lx,%d): stub\n", threadId, boost);
}
/**********************************************************************
* VWin32_BoostThreadStatic [KERNEL.536]
*/
VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
{
FIXME("(0x%08lx,%d): stub\n", threadId, boost);
}
/***********************************************************************
* GetThreadLocale (KERNEL32.295)
*/
LCID WINAPI GetThreadLocale(void)
{
LCID ret = NtCurrentTeb()->CurrentLocale;
if (!ret) NtCurrentTeb()->CurrentLocale = ret = GetUserDefaultLCID();
return ret;
}
/**********************************************************************
* SetThreadLocale [KERNEL32.671] Sets the calling threads current locale.
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*
* FIXME
* check if lcid is a valid cp
*/
BOOL WINAPI SetThreadLocale(
LCID lcid) /* [in] Locale identifier */
{
switch (lcid)
{
case LOCALE_SYSTEM_DEFAULT:
lcid = GetSystemDefaultLCID();
break;
case LOCALE_USER_DEFAULT:
case LOCALE_NEUTRAL:
lcid = GetUserDefaultLCID();
break;
}
NtCurrentTeb()->CurrentLocale = lcid;
return TRUE;
}
/***********************************************************************
* GetCurrentThread [KERNEL32.200] Gets pseudohandle for current thread
*
* RETURNS
* Pseudohandle for the current thread
*/
#undef GetCurrentThread
HANDLE WINAPI GetCurrentThread(void)
{
return 0xfffffffe;
}
/***********************************************************************
* 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__
/* 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" );
/* DWORD WINAPI GetLastError(void); */
__ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
/* DWORD WINAPI GetCurrentProcessId(void) */
__ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
/* DWORD WINAPI GetCurrentThreadId(void) */
__ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
#else /* __i386__ */
/**********************************************************************
* SetLastError [KERNEL.147] [KERNEL32.497] Sets the last-error code.
*/
void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
{
NtCurrentTeb()->last_error = error;
}
/**********************************************************************
* GetLastError [KERNEL.148] [KERNEL32.227] Returns last-error code.
*/
DWORD WINAPI GetLastError(void)
{
return NtCurrentTeb()->last_error;
}
/***********************************************************************
* GetCurrentProcessId [KERNEL32.199] Returns process identifier.
*/
DWORD WINAPI GetCurrentProcessId(void)
{
return (DWORD)NtCurrentTeb()->pid;
}
/***********************************************************************
* GetCurrentThreadId [KERNEL32.201] Returns thread identifier.
*/
DWORD WINAPI GetCurrentThreadId(void)
{
return (DWORD)NtCurrentTeb()->tid;
}
#endif /* __i386__ */
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