602 lines
16 KiB
C
602 lines
16 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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#include <assert.h>
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#include <stdio.h>
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#include <signal.h>
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#include <unistd.h>
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#include "thread.h"
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#include "process.h"
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#include "winerror.h"
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#include "heap.h"
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#include "selectors.h"
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#include "miscemu.h"
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#include "winnt.h"
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#include "debug.h"
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#ifndef __i386__
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THDB *pCurrentThread;
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#endif
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static BOOL32 THREAD_Signaled( K32OBJ *obj, DWORD thread_id );
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static BOOL32 THREAD_Satisfied( K32OBJ *obj, DWORD thread_id );
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static void THREAD_AddWait( K32OBJ *obj, DWORD thread_id );
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static void THREAD_RemoveWait( K32OBJ *obj, DWORD thread_id );
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static void THREAD_Destroy( K32OBJ *obj );
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const K32OBJ_OPS THREAD_Ops =
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{
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THREAD_Signaled, /* signaled */
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THREAD_Satisfied, /* satisfied */
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THREAD_AddWait, /* add_wait */
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THREAD_RemoveWait, /* remove_wait */
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NULL, /* read */
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NULL, /* write */
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THREAD_Destroy /* destroy */
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};
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/* Is threading code initialized? */
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BOOL32 THREAD_InitDone = FALSE;
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/**********************************************************************
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* THREAD_GetPtr
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*
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* Return a pointer to a thread object. The object count must be decremented
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* when no longer used.
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*/
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THDB *THREAD_GetPtr( HANDLE32 handle, DWORD access )
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{
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THDB *thread;
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if (handle == 0xfffffffe) /* Self-thread handle */
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{
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thread = THREAD_Current();
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K32OBJ_IncCount( &thread->header );
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}
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else thread = (THDB *)HANDLE_GetObjPtr( handle, K32OBJ_THREAD, access );
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return thread;
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}
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/***********************************************************************
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* THREAD_Current
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*
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* Return the current thread THDB pointer.
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*/
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THDB *THREAD_Current(void)
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{
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if (!THREAD_InitDone) return NULL;
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return (THDB *)((char *)NtCurrentTeb() - (int)&((THDB *)0)->teb);
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}
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/***********************************************************************
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* THREAD_AddQueue
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*
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* Add a thread to a queue.
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*/
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void THREAD_AddQueue( THREAD_QUEUE *queue, THDB *thread )
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{
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THREAD_ENTRY *entry = HeapAlloc( SystemHeap, HEAP_NO_SERIALIZE,
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sizeof(*entry) );
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assert(entry);
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SYSTEM_LOCK();
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entry->thread = thread;
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if (*queue)
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{
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entry->next = (*queue)->next;
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(*queue)->next = entry;
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}
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else entry->next = entry;
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*queue = entry;
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SYSTEM_UNLOCK();
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}
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/***********************************************************************
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* THREAD_RemoveQueue
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*
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* Remove a thread from a queue.
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*/
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void THREAD_RemoveQueue( THREAD_QUEUE *queue, THDB *thread )
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{
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THREAD_ENTRY *entry = *queue;
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SYSTEM_LOCK();
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if (entry->next == entry) /* Only one element in the queue */
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{
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assert( entry->thread == thread );
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*queue = NULL;
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}
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else
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{
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THREAD_ENTRY *next;
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while (entry->next->thread != thread)
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{
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entry = entry->next;
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assert( entry != *queue ); /* Have we come all the way around? */
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}
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if ((next = entry->next) == *queue) *queue = entry;
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entry->next = entry->next->next;
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entry = next; /* This is the one we want to free */
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}
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HeapFree( SystemHeap, 0, entry );
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SYSTEM_UNLOCK();
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}
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/***********************************************************************
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* THREAD_Create
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*/
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THDB *THREAD_Create( PDB32 *pdb, DWORD stack_size,
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LPTHREAD_START_ROUTINE start_addr, LPVOID param )
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{
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DWORD old_prot;
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WORD cs, ds;
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THDB *thdb = HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, sizeof(THDB) );
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if (!thdb) return NULL;
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thdb->header.type = K32OBJ_THREAD;
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thdb->header.refcount = 1;
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thdb->process = pdb;
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thdb->teb.except = (void *)-1;
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thdb->teb.htask16 = 0; /* FIXME */
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thdb->teb.stack_sel = 0; /* FIXME */
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thdb->teb.self = &thdb->teb;
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thdb->teb.tls_ptr = thdb->tls_array;
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thdb->teb.process = pdb;
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thdb->wait_list = &thdb->wait_struct;
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thdb->exit_code = 0x103; /* STILL_ACTIVE */
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thdb->entry_point = start_addr;
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thdb->entry_arg = param;
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/* Allocate the stack */
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/* FIXME:
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* If stacksize smaller than 1 MB, allocate 1MB
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* (one program wanted only 10 kB, which is recommendable, but some WINE
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* functions, noteably in the files subdir, push HUGE structures and
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* arrays on the stack. They probably shouldn't.)
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* If stacksize larger than 16 MB, warn the user. (We could shrink the stack
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* but this could give more or less unexplainable crashes.)
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*/
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if (stack_size<1024*1024)
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stack_size = 1024 * 1024;
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if (stack_size >= 16*1024*1024)
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fprintf(stderr,"Warning:Thread stack size is %ld MB.\n",stack_size/1024/1024);
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thdb->stack_base = VirtualAlloc( NULL, stack_size, MEM_COMMIT,
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PAGE_EXECUTE_READWRITE );
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if (!thdb->stack_base) goto error;
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/* Set a guard page at the bottom of the stack */
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VirtualProtect( thdb->stack_base, 1, PAGE_EXECUTE_READWRITE | PAGE_GUARD,
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&old_prot );
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thdb->teb.stack_top = (char *)thdb->stack_base + stack_size;
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thdb->teb.stack_low = thdb->stack_base;
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thdb->exit_stack = thdb->teb.stack_top;
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/* Allocate the TEB selector (%fs register) */
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thdb->teb_sel = SELECTOR_AllocBlock( &thdb->teb, 0x1000, SEGMENT_DATA,
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TRUE, FALSE );
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if (!thdb->teb_sel) goto error;
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/* Allocate the event */
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if (!(thdb->event = EVENT_Create( TRUE, FALSE ))) goto error;
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/* Initialize the thread context */
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GET_CS(cs);
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GET_DS(ds);
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thdb->pcontext = &thdb->context;
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thdb->context.SegCs = cs;
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thdb->context.SegDs = ds;
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thdb->context.SegEs = ds;
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thdb->context.SegGs = ds;
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thdb->context.SegSs = ds;
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thdb->context.SegFs = thdb->teb_sel;
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thdb->context.Eip = (DWORD)start_addr;
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thdb->context.Esp = (DWORD)thdb->teb.stack_top;
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PE_InitTls( thdb );
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return thdb;
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error:
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if (thdb->event) K32OBJ_DecCount( thdb->event );
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if (thdb->teb_sel) SELECTOR_FreeBlock( thdb->teb_sel, 1 );
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if (thdb->stack_base) VirtualFree( thdb->stack_base, 0, MEM_RELEASE );
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HeapFree( SystemHeap, 0, thdb );
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return NULL;
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}
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/***********************************************************************
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* THREAD_Signaled
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*/
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static BOOL32 THREAD_Signaled( K32OBJ *obj, DWORD thread_id )
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{
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THDB *thdb = (THDB *)obj;
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assert( obj->type == K32OBJ_THREAD );
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return K32OBJ_OPS( thdb->event )->signaled( thdb->event, thread_id );
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}
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/***********************************************************************
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* THREAD_Satisfied
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*
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* Wait on this object has been satisfied.
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*/
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static BOOL32 THREAD_Satisfied( K32OBJ *obj, DWORD thread_id )
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{
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THDB *thdb = (THDB *)obj;
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assert( obj->type == K32OBJ_THREAD );
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return K32OBJ_OPS( thdb->event )->satisfied( thdb->event, thread_id );
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}
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/***********************************************************************
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* THREAD_AddWait
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*
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* Add thread to object wait queue.
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*/
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static void THREAD_AddWait( K32OBJ *obj, DWORD thread_id )
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{
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THDB *thdb = (THDB *)obj;
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assert( obj->type == K32OBJ_THREAD );
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return K32OBJ_OPS( thdb->event )->add_wait( thdb->event, thread_id );
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}
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/***********************************************************************
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* THREAD_RemoveWait
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*
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* Remove thread from object wait queue.
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*/
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static void THREAD_RemoveWait( K32OBJ *obj, DWORD thread_id )
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{
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THDB *thdb = (THDB *)obj;
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assert( obj->type == K32OBJ_THREAD );
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return K32OBJ_OPS( thdb->event )->remove_wait( thdb->event, thread_id );
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}
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/***********************************************************************
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* THREAD_Destroy
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*/
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static void THREAD_Destroy( K32OBJ *ptr )
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{
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THDB *thdb = (THDB *)ptr;
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assert( ptr->type == K32OBJ_THREAD );
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ptr->type = K32OBJ_UNKNOWN;
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/* Free the associated memory */
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#ifdef __i386__
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{
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/* Check if we are deleting the current thread */
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WORD fs;
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GET_FS( fs );
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if (fs == thdb->teb_sel)
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{
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GET_DS( fs );
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SET_FS( fs );
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}
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}
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#endif
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K32OBJ_DecCount( thdb->event );
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SELECTOR_FreeBlock( thdb->teb_sel, 1 );
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HeapFree( SystemHeap, 0, thdb );
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}
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/***********************************************************************
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* CreateThread (KERNEL32.63)
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*/
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HANDLE32 WINAPI CreateThread( LPSECURITY_ATTRIBUTES attribs, DWORD 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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HANDLE32 handle;
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THDB *thread = THREAD_Create( PROCESS_Current(), stack, start, param );
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if (!thread) return INVALID_HANDLE_VALUE32;
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handle = HANDLE_Alloc( &thread->header, THREAD_ALL_ACCESS, FALSE );
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if (handle == INVALID_HANDLE_VALUE32) goto error;
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if (SYSDEPS_SpawnThread( thread ) == -1) goto error;
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*id = THDB_TO_THREAD_ID( thread );
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return handle;
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error:
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K32OBJ_DecCount( &thread->header );
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return INVALID_HANDLE_VALUE32;
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}
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/***********************************************************************
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* ExitThread (KERNEL32.215)
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*/
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void WINAPI ExitThread( DWORD code )
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{
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THDB *thdb = THREAD_Current();
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LONG count;
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SYSTEM_LOCK();
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thdb->exit_code = code;
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EVENT_Set( thdb->event );
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/* Abandon all owned mutexes */
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while (thdb->mutex_list) MUTEX_Abandon( thdb->mutex_list );
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/* FIXME: should free the stack somehow */
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#if 0
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/* FIXME: We cannot do this; once the current thread is destroyed,
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synchronization primitives do not work properly. */
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K32OBJ_DecCount( &thdb->header );
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#endif
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/* Completely unlock the system lock just in case */
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count = SYSTEM_LOCK_COUNT();
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while (count--) SYSTEM_UNLOCK();
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SYSDEPS_ExitThread();
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}
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/***********************************************************************
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* GetCurrentThread (KERNEL32.200)
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*/
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HANDLE32 WINAPI GetCurrentThread(void)
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{
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return 0xFFFFFFFE;
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}
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/***********************************************************************
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* GetCurrentThreadId (KERNEL32.201)
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*/
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DWORD WINAPI GetCurrentThreadId(void)
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{
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return THDB_TO_THREAD_ID( THREAD_Current() );
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}
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/**********************************************************************
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* GetLastError (KERNEL.148) (KERNEL32.227)
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*/
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DWORD WINAPI GetLastError(void)
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{
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THDB *thread = THREAD_Current();
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return thread->last_error;
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}
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/**********************************************************************
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* SetLastError (KERNEL.147) (KERNEL32.497)
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*/
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void WINAPI SetLastError( DWORD error )
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{
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THDB *thread = THREAD_Current();
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/* This one must work before we have a thread (FIXME) */
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if (thread) thread->last_error = error;
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}
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/**********************************************************************
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* SetLastErrorEx (USER32.484)
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*/
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void WINAPI SetLastErrorEx( DWORD error, DWORD type )
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{
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/* FIXME: what about 'type'? */
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SetLastError( error );
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}
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/**********************************************************************
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* THREAD_TlsAlloc
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*/
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DWORD THREAD_TlsAlloc(THDB *thread)
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{
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DWORD i, mask, ret = 0;
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DWORD *bits = thread->process->tls_bits;
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EnterCriticalSection( &thread->process->crit_section );
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if (*bits == 0xffffffff)
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{
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bits++;
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ret = 32;
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if (*bits == 0xffffffff)
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{
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LeaveCriticalSection( &thread->process->crit_section );
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SetLastError( ERROR_NO_MORE_ITEMS );
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return 0xffffffff;
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}
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}
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for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
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*bits |= mask;
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LeaveCriticalSection( &thread->process->crit_section );
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return ret + i;
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}
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/**********************************************************************
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* TlsAlloc (KERNEL32.530)
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*
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* Allocates a thread local storage index
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*
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* RETURNS
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* TLS Index
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* 0xFFFFFFFF: Failure
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*/
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DWORD WINAPI TlsAlloc(void)
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{
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return THREAD_TlsAlloc(THREAD_Current());
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}
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/**********************************************************************
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* TlsFree (KERNEL32.531)
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*/
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BOOL32 WINAPI TlsFree( DWORD index )
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{
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DWORD mask;
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THDB *thread = THREAD_Current();
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DWORD *bits = thread->process->tls_bits;
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if (index >= 64)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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EnterCriticalSection( &thread->process->crit_section );
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if (index >= 32) bits++;
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mask = (1 << (index & 31));
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if (!(*bits & mask)) /* already free? */
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{
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LeaveCriticalSection( &thread->process->crit_section );
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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*bits &= ~mask;
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thread->tls_array[index] = 0;
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/* FIXME: should zero all other thread values */
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LeaveCriticalSection( &thread->process->crit_section );
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return TRUE;
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}
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/**********************************************************************
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* TlsGetValue (KERNEL32.532)
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* RETURNS
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* !0: Value stored in calling thread's TLS slot for index
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* 0: Check GetLastError() for error code
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*/
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LPVOID WINAPI TlsGetValue(
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DWORD index /* TLS index to retrieve value for */
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) {
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THDB *thread = THREAD_Current();
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if (index >= 64)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return NULL;
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}
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SetLastError( ERROR_SUCCESS );
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return thread->tls_array[index];
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}
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/**********************************************************************
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* TlsSetValue (KERNEL32.533)
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* RETURNS
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* TRUE: Successful
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* FALSE: Failure
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*/
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BOOL32 WINAPI TlsSetValue(
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DWORD index, /* TLS index to set value for */
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LPVOID value /* value to be stored */
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) {
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THDB *thread = THREAD_Current();
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if (index >= 64)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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thread->tls_array[index] = value;
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return TRUE;
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}
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/***********************************************************************
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* GetThreadContext (KERNEL32.294)
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*/
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BOOL32 WINAPI GetThreadContext( HANDLE32 handle, CONTEXT *context )
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{
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THDB *thread = THREAD_GetPtr( handle, THREAD_GET_CONTEXT );
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if (!thread) return FALSE;
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*context = thread->context;
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K32OBJ_DecCount( &thread->header );
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return TRUE;
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}
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/**********************************************************************
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* GetThreadPriority (KERNEL32.296)
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*/
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INT32 WINAPI GetThreadPriority(HANDLE32 hthread)
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{
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THDB *thread;
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INT32 ret;
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if (!(thread = THREAD_GetPtr( hthread, THREAD_QUERY_INFORMATION )))
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return 0;
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ret = thread->delta_priority;
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K32OBJ_DecCount( &thread->header );
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return ret;
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}
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/**********************************************************************
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* SetThreadPriority (KERNEL32.514)
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*/
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BOOL32 WINAPI SetThreadPriority(HANDLE32 hthread,INT32 priority)
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{
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THDB *thread;
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if (!(thread = THREAD_GetPtr( hthread, THREAD_SET_INFORMATION )))
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return FALSE;
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thread->delta_priority = priority;
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K32OBJ_DecCount( &thread->header );
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return TRUE;
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}
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/**********************************************************************
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* TerminateThread (KERNEL32)
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*/
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BOOL32 WINAPI TerminateThread(HANDLE32 handle,DWORD exitcode)
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{
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FIXME(thread,"(0x%08x,%ld): STUB!\n",handle,exitcode);
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return TRUE;
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}
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/**********************************************************************
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* GetExitCodeThread (KERNEL32)
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*/
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BOOL32 WINAPI GetExitCodeThread(HANDLE32 hthread,LPDWORD exitcode)
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{
|
|
THDB *thread;
|
|
|
|
if (!(thread = THREAD_GetPtr( hthread, THREAD_QUERY_INFORMATION )))
|
|
return FALSE;
|
|
if (exitcode) *exitcode = thread->exit_code;
|
|
K32OBJ_DecCount( &thread->header );
|
|
return TRUE;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* ResumeThread (KERNEL32)
|
|
*/
|
|
BOOL32 WINAPI ResumeThread( HANDLE32 handle )
|
|
{
|
|
FIXME(thread,"(0x%08x): STUB!\n",handle);
|
|
return TRUE;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* SuspendThread (KERNEL32)
|
|
*/
|
|
BOOL32 WINAPI SuspendThread( HANDLE32 handle )
|
|
{
|
|
FIXME(thread,"(0x%08x): STUB!\n",handle);
|
|
return TRUE;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* GetThreadTimes (KERNEL32)
|
|
*/
|
|
BOOL32 WINAPI GetThreadTimes(
|
|
HANDLE32 thread,
|
|
LPFILETIME creationtime,
|
|
LPFILETIME exittime,
|
|
LPFILETIME kerneltime,
|
|
LPFILETIME usertime
|
|
) {
|
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
|
|
return FALSE;
|
|
}
|