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526 lines
14 KiB
C
526 lines
14 KiB
C
/*
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* Win32 threads
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*
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* Copyright 1996 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#ifdef HAVE_SYS_TIMES_H
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#include <sys/times.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "wine/winbase16.h"
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#include "thread.h"
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#include "task.h"
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#include "module.h"
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#include "winerror.h"
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#include "selectors.h"
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#include "winnt.h"
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#include "wine/server.h"
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#include "stackframe.h"
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#include "wine/debug.h"
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#include "winnls.h"
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WINE_DEFAULT_DEBUG_CHANNEL(thread);
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WINE_DECLARE_DEBUG_CHANNEL(relay);
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/* TEB of the initial thread */
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static TEB initial_teb;
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extern struct _PDB current_process;
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/***********************************************************************
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* THREAD_IdToTEB
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*
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* Convert a thread id to a TEB, making sure it is valid.
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*/
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TEB *THREAD_IdToTEB( DWORD id )
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{
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TEB *ret = NULL;
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if (!id || id == GetCurrentThreadId()) return NtCurrentTeb();
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SERVER_START_REQ( get_thread_info )
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{
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req->handle = 0;
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req->tid_in = id;
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if (!wine_server_call( req )) ret = reply->teb;
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}
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SERVER_END_REQ;
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if (!ret)
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{
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/* Allow task handles to be used; convert to main thread */
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if ( IsTask16( id ) )
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{
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TDB *pTask = TASK_GetPtr( id );
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if (pTask) return pTask->teb;
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}
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SetLastError( ERROR_INVALID_PARAMETER );
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}
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return ret;
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}
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/***********************************************************************
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* THREAD_InitTEB
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*
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* Initialization of a newly created TEB.
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*/
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static BOOL THREAD_InitTEB( TEB *teb )
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{
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teb->except = (void *)~0UL;
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teb->self = teb;
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teb->tibflags = TEBF_WIN32;
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teb->exit_code = STILL_ACTIVE;
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teb->request_fd = -1;
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teb->reply_fd = -1;
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teb->wait_fd[0] = -1;
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teb->wait_fd[1] = -1;
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teb->stack_top = (void *)~0UL;
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teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
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teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
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teb->teb_sel = wine_ldt_alloc_fs();
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return (teb->teb_sel != 0);
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}
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/***********************************************************************
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* THREAD_FreeTEB
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*
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* Free data structures associated with a thread.
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* Must be called from the context of another thread.
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*/
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static void THREAD_FreeTEB( TEB *teb )
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{
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TRACE("(%p) called\n", teb );
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/* Free the associated memory */
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wine_ldt_free_fs( teb->teb_sel );
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VirtualFree( teb->stack_base, 0, MEM_RELEASE );
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}
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/***********************************************************************
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* THREAD_InitStack
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*
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* Allocate the stack of a thread.
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*/
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TEB *THREAD_InitStack( TEB *teb, DWORD stack_size )
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{
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DWORD old_prot, total_size;
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DWORD page_size = getpagesize();
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void *base;
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/* Allocate the stack */
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if (stack_size >= 16*1024*1024)
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WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
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/* if size is smaller than default, get stack size from parent */
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if (stack_size < 1024 * 1024)
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{
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if (teb)
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stack_size = 1024 * 1024; /* no parent */
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else
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stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base
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- SIGNAL_STACK_SIZE - 3 * page_size);
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}
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/* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */
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stack_size += 64 * 1024;
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/* Memory layout in allocated block:
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*
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* size contents
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* 1 page NOACCESS guard page
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* SIGNAL_STACK_SIZE signal stack
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* 1 page NOACCESS guard page
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* 1 page PAGE_GUARD guard page
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* stack_size normal stack
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* 1 page TEB (except for initial thread)
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*/
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stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
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total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size;
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if (!teb) total_size += page_size;
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if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
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return NULL;
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if (!teb)
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{
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teb = (TEB *)((char *)base + total_size - page_size);
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if (!THREAD_InitTEB( teb ))
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{
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VirtualFree( base, 0, MEM_RELEASE );
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return NULL;
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}
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}
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teb->stack_low = base;
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teb->stack_base = base;
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teb->signal_stack = (char *)base + page_size;
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teb->stack_top = (char *)base + 3 * page_size + SIGNAL_STACK_SIZE + stack_size;
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/* Setup guard pages */
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VirtualProtect( base, 1, PAGE_NOACCESS, &old_prot );
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VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE, 1, PAGE_NOACCESS, &old_prot );
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VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE + page_size, 1,
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PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
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return teb;
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}
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/***********************************************************************
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* THREAD_Init
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*
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* Setup the initial thread.
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*
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* NOTES: The first allocated TEB on NT is at 0x7ffde000.
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*/
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void THREAD_Init(void)
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{
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static struct debug_info info; /* debug info for initial thread */
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if (!initial_teb.self) /* do it only once */
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{
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THREAD_InitTEB( &initial_teb );
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assert( initial_teb.teb_sel );
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info.str_pos = info.strings;
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info.out_pos = info.output;
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initial_teb.debug_info = &info;
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initial_teb.Peb = (PEB *)¤t_process; /* FIXME */
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SYSDEPS_SetCurThread( &initial_teb );
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}
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}
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DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
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/***********************************************************************
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* THREAD_Start
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*
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* Start execution of a newly created thread. Does not return.
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*/
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static void THREAD_Start( TEB *teb )
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{
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LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)teb->entry_point;
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struct debug_info info;
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info.str_pos = info.strings;
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info.out_pos = info.output;
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teb->debug_info = &info;
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SYSDEPS_SetCurThread( teb );
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SIGNAL_Init();
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CLIENT_InitThread();
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if (TRACE_ON(relay))
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DPRINTF("%04lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func );
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__TRY
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{
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MODULE_DllThreadAttach( NULL );
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ExitThread( func( NtCurrentTeb()->entry_arg ) );
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}
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__EXCEPT(UnhandledExceptionFilter)
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{
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TerminateThread( GetCurrentThread(), GetExceptionCode() );
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}
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__ENDTRY
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}
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/***********************************************************************
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* CreateThread (KERNEL32.@)
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*/
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HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack,
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LPTHREAD_START_ROUTINE start, LPVOID param,
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DWORD flags, LPDWORD id )
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{
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HANDLE handle = 0;
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TEB *teb;
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DWORD tid = 0;
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int request_pipe[2];
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if (pipe( request_pipe ) == -1)
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{
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SetLastError( ERROR_TOO_MANY_OPEN_FILES );
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return 0;
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}
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fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
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wine_server_send_fd( request_pipe[0] );
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SERVER_START_REQ( new_thread )
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{
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req->suspend = ((flags & CREATE_SUSPENDED) != 0);
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req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
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req->request_fd = request_pipe[0];
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if (!wine_server_call_err( req ))
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{
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handle = reply->handle;
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tid = reply->tid;
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}
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close( request_pipe[0] );
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}
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SERVER_END_REQ;
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if (!handle || !(teb = THREAD_InitStack( NULL, stack )))
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{
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close( request_pipe[1] );
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return 0;
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}
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teb->Peb = NtCurrentTeb()->Peb;
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teb->tid = tid;
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teb->request_fd = request_pipe[1];
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teb->entry_point = start;
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teb->entry_arg = param;
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teb->htask16 = GetCurrentTask();
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if (id) *id = tid;
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if (SYSDEPS_SpawnThread( THREAD_Start, teb ) == -1)
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{
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CloseHandle( handle );
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close( request_pipe[1] );
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THREAD_FreeTEB( teb );
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return 0;
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}
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return handle;
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}
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/***********************************************************************
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* ExitThread [KERNEL32.@] Ends a thread
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*
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* RETURNS
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* None
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*/
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void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
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{
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BOOL last;
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SERVER_START_REQ( terminate_thread )
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{
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/* send the exit code to the server */
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req->handle = GetCurrentThread();
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req->exit_code = code;
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wine_server_call( req );
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last = reply->last;
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}
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SERVER_END_REQ;
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if (last)
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{
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LdrShutdownProcess();
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exit( code );
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}
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else
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{
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LdrShutdownThread();
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if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
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SYSDEPS_ExitThread( code );
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}
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}
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/***********************************************************************
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* OpenThread Retrieves a handle to a thread from its thread id
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*
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* RETURNS
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* None
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*/
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HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
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{
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HANDLE ret = 0;
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SERVER_START_REQ( open_thread )
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{
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req->tid = dwThreadId;
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req->access = dwDesiredAccess;
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req->inherit = bInheritHandle;
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if (!wine_server_call_err( req )) ret = reply->handle;
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}
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SERVER_END_REQ;
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return ret;
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}
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/**********************************************************************
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* TerminateThread [KERNEL32.@] Terminates a thread
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*
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* RETURNS
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* Success: TRUE
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* Failure: FALSE
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*/
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BOOL WINAPI TerminateThread( HANDLE handle, /* [in] Handle to thread */
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DWORD exit_code) /* [in] Exit code for thread */
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{
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NTSTATUS status = NtTerminateThread( handle, exit_code );
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if (status) SetLastError( RtlNtStatusToDosError(status) );
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return !status;
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}
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/**********************************************************************
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* GetExitCodeThread (KERNEL32.@)
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*
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* Gets termination status of thread.
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*
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* RETURNS
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* Success: TRUE
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* Failure: FALSE
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*/
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BOOL WINAPI GetExitCodeThread(
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HANDLE hthread, /* [in] Handle to thread */
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LPDWORD exitcode) /* [out] Address to receive termination status */
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{
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THREAD_BASIC_INFORMATION info;
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NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
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&info, sizeof(info), NULL );
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if (status)
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{
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SetLastError( RtlNtStatusToDosError(status) );
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return FALSE;
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}
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if (exitcode) *exitcode = info.ExitStatus;
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return TRUE;
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}
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/* callback for QueueUserAPC */
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static void CALLBACK call_user_apc( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3 )
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{
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PAPCFUNC func = (PAPCFUNC)arg1;
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func( arg2 );
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}
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/***********************************************************************
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* QueueUserAPC (KERNEL32.@)
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*/
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DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
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{
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NTSTATUS status = NtQueueApcThread( hthread, call_user_apc, (ULONG_PTR)func, data, 0 );
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if (status) SetLastError( RtlNtStatusToDosError(status) );
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return !status;
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}
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/***********************************************************************
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* ProcessIdToSessionId (KERNEL32.@)
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* This function is available on Terminal Server 4SP4 and Windows 2000
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*/
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BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
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{
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/* According to MSDN, if the calling process is not in a terminal
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* services environment, then the sessionid returned is zero.
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*/
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*sessionid_ptr = 0;
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return TRUE;
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}
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#ifdef __i386__
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/***********************************************************************
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* SetLastError (KERNEL.147)
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* SetLastError (KERNEL32.@)
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*/
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/* void WINAPI SetLastError( DWORD error ); */
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__ASM_GLOBAL_FUNC( SetLastError,
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"movl 4(%esp),%eax\n\t"
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".byte 0x64\n\t"
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"movl %eax,0x60\n\t"
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"ret $4" );
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/***********************************************************************
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* GetLastError (KERNEL.148)
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* GetLastError (KERNEL32.@)
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*/
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/* DWORD WINAPI GetLastError(void); */
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__ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
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/***********************************************************************
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* GetCurrentProcessId (KERNEL.471)
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* GetCurrentProcessId (KERNEL32.@)
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*/
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/* DWORD WINAPI GetCurrentProcessId(void) */
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__ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
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/***********************************************************************
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* GetCurrentThreadId (KERNEL.462)
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* GetCurrentThreadId (KERNEL32.@)
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*/
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/* DWORD WINAPI GetCurrentThreadId(void) */
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__ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
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#else /* __i386__ */
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/**********************************************************************
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* SetLastError (KERNEL.147)
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* SetLastError (KERNEL32.@)
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*
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* Sets the last-error code.
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*/
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void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
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{
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NtCurrentTeb()->last_error = error;
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}
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/**********************************************************************
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* GetLastError (KERNEL.148)
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* GetLastError (KERNEL32.@)
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*
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* Returns last-error code.
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*/
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DWORD WINAPI GetLastError(void)
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{
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return NtCurrentTeb()->last_error;
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}
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/***********************************************************************
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* GetCurrentProcessId (KERNEL.471)
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* GetCurrentProcessId (KERNEL32.@)
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*
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* Returns process identifier.
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*/
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DWORD WINAPI GetCurrentProcessId(void)
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{
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return (DWORD)NtCurrentTeb()->pid;
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}
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/***********************************************************************
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* GetCurrentThreadId (KERNEL.462)
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* GetCurrentThreadId (KERNEL32.@)
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*
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* Returns thread identifier.
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*/
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DWORD WINAPI GetCurrentThreadId(void)
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{
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return NtCurrentTeb()->tid;
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}
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#endif /* __i386__ */
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