1211 lines
34 KiB
C
1211 lines
34 KiB
C
/*
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* Win32 heap functions
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*
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* Copyright 1995, 1996 Alexandre Julliard
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* Copyright 1996 Huw Davies
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* Copyright 1998 Ulrich Weigand
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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 <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <time.h>
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_SYSCTL_H
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#include <sys/sysctl.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 "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "winnt.h"
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#include "winreg.h"
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#include "winternl.h"
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#include "excpt.h"
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#include "thread.h"
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#include "wine/exception.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(heap);
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/* address where we try to map the system heap */
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#define SYSTEM_HEAP_BASE ((void*)0x65430000)
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#define SYSTEM_HEAP_SIZE 0x100000 /* Default heap size = 1Mb */
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static HANDLE systemHeap; /* globally shared heap */
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/* filter for page-fault exceptions */
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/* It is possible for a bogus global pointer to cause a */
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/* page zero reference, so I include EXCEPTION_PRIV_INSTRUCTION too. */
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static WINE_EXCEPTION_FILTER(page_fault)
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{
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switch (GetExceptionCode()) {
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case (EXCEPTION_ACCESS_VIOLATION):
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case (EXCEPTION_PRIV_INSTRUCTION):
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return EXCEPTION_EXECUTE_HANDLER;
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default:
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return EXCEPTION_CONTINUE_SEARCH;
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}
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}
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/***********************************************************************
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* HEAP_CreateSystemHeap
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*
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* Create the system heap.
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*/
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inline static HANDLE HEAP_CreateSystemHeap(void)
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{
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int created;
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void *base;
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HANDLE map, event;
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UNICODE_STRING event_name;
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OBJECT_ATTRIBUTES event_attr;
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if (!(map = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, SEC_COMMIT | PAGE_READWRITE,
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0, SYSTEM_HEAP_SIZE, "__SystemHeap" ))) return 0;
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created = (GetLastError() != ERROR_ALREADY_EXISTS);
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if (!(base = MapViewOfFileEx( map, FILE_MAP_ALL_ACCESS, 0, 0, 0, SYSTEM_HEAP_BASE )))
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{
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/* pre-defined address not available */
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ERR( "system heap base address %p not available\n", SYSTEM_HEAP_BASE );
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return 0;
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}
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/* create the system heap event */
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RtlCreateUnicodeStringFromAsciiz( &event_name, "__SystemHeapEvent" );
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event_attr.Length = sizeof(event_attr);
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event_attr.RootDirectory = 0;
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event_attr.ObjectName = &event_name;
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event_attr.Attributes = 0;
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event_attr.SecurityDescriptor = NULL;
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event_attr.SecurityQualityOfService = NULL;
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NtCreateEvent( &event, EVENT_ALL_ACCESS, &event_attr, TRUE, FALSE );
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if (created) /* newly created heap */
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{
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systemHeap = RtlCreateHeap( HEAP_SHARED, base, SYSTEM_HEAP_SIZE,
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SYSTEM_HEAP_SIZE, NULL, NULL );
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NtSetEvent( event, NULL );
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}
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else
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{
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/* wait for the heap to be initialized */
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WaitForSingleObject( event, INFINITE );
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systemHeap = (HANDLE)base;
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}
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CloseHandle( map );
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return systemHeap;
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}
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/***********************************************************************
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* HeapCreate (KERNEL32.@)
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* RETURNS
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* Handle of heap: Success
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* NULL: Failure
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*/
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HANDLE WINAPI HeapCreate(
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DWORD flags, /* [in] Heap allocation flag */
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SIZE_T initialSize, /* [in] Initial heap size */
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SIZE_T maxSize /* [in] Maximum heap size */
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) {
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HANDLE ret;
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if ( flags & HEAP_SHARED )
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{
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if (!systemHeap) HEAP_CreateSystemHeap();
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else WARN( "Shared Heap requested, returning system heap.\n" );
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ret = systemHeap;
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}
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else
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{
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ret = RtlCreateHeap( flags, NULL, maxSize, initialSize, NULL, NULL );
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if (!ret) SetLastError( ERROR_NOT_ENOUGH_MEMORY );
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}
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return ret;
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}
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/***********************************************************************
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* HeapDestroy (KERNEL32.@)
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* RETURNS
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* TRUE: Success
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* FALSE: Failure
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*/
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BOOL WINAPI HeapDestroy( HANDLE heap /* [in] Handle of heap */ )
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{
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if (heap == systemHeap)
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{
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WARN( "attempt to destroy system heap, returning TRUE!\n" );
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return TRUE;
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}
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if (!RtlDestroyHeap( heap )) return TRUE;
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SetLastError( ERROR_INVALID_HANDLE );
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return FALSE;
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}
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/***********************************************************************
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* HeapCompact (KERNEL32.@)
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*/
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SIZE_T WINAPI HeapCompact( HANDLE heap, DWORD flags )
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{
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return RtlCompactHeap( heap, flags );
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}
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/***********************************************************************
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* HeapValidate (KERNEL32.@)
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* Validates a specified heap.
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*
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* NOTES
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* Flags is ignored.
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*
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* RETURNS
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* TRUE: Success
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* FALSE: Failure
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*/
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BOOL WINAPI HeapValidate(
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HANDLE heap, /* [in] Handle to the heap */
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DWORD flags, /* [in] Bit flags that control access during operation */
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LPCVOID block /* [in] Optional pointer to memory block to validate */
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) {
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return RtlValidateHeap( heap, flags, block );
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}
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/***********************************************************************
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* HeapWalk (KERNEL32.@)
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* Enumerates the memory blocks in a specified heap.
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*
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* TODO
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* - handling of PROCESS_HEAP_ENTRY_MOVEABLE and
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* PROCESS_HEAP_ENTRY_DDESHARE (needs heap.c support)
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*
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* RETURNS
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* TRUE: Success
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* FALSE: Failure
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*/
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BOOL WINAPI HeapWalk(
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HANDLE heap, /* [in] Handle to heap to enumerate */
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LPPROCESS_HEAP_ENTRY entry /* [out] Pointer to structure of enumeration info */
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) {
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NTSTATUS ret = RtlWalkHeap( heap, entry );
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if (ret) SetLastError( RtlNtStatusToDosError(ret) );
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return !ret;
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}
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/***********************************************************************
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* HeapLock (KERNEL32.@)
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* Attempts to acquire the critical section object for a specified heap.
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*
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* RETURNS
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* TRUE: Success
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* FALSE: Failure
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*/
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BOOL WINAPI HeapLock(
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HANDLE heap /* [in] Handle of heap to lock for exclusive access */
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) {
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return RtlLockHeap( heap );
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}
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/***********************************************************************
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* HeapUnlock (KERNEL32.@)
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* Releases ownership of the critical section object.
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*
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* RETURNS
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* TRUE: Success
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* FALSE: Failure
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*/
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BOOL WINAPI HeapUnlock(
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HANDLE heap /* [in] Handle to the heap to unlock */
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) {
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return RtlUnlockHeap( heap );
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}
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/***********************************************************************
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* GetProcessHeap (KERNEL32.@)
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*/
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HANDLE WINAPI GetProcessHeap(void)
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{
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return NtCurrentTeb()->Peb->ProcessHeap;
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}
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/***********************************************************************
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* GetProcessHeaps (KERNEL32.@)
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*/
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DWORD WINAPI GetProcessHeaps( DWORD count, HANDLE *heaps )
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{
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return RtlGetProcessHeaps( count, heaps );
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}
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/* These are needed so that we can call the functions from inside kernel itself */
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LPVOID WINAPI HeapAlloc( HANDLE heap, DWORD flags, SIZE_T size )
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{
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return RtlAllocateHeap( heap, flags, size );
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}
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BOOL WINAPI HeapFree( HANDLE heap, DWORD flags, LPVOID ptr )
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{
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return RtlFreeHeap( heap, flags, ptr );
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}
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LPVOID WINAPI HeapReAlloc( HANDLE heap, DWORD flags, LPVOID ptr, SIZE_T size )
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{
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return RtlReAllocateHeap( heap, flags, ptr, size );
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}
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SIZE_T WINAPI HeapSize( HANDLE heap, DWORD flags, LPVOID ptr )
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{
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return RtlSizeHeap( heap, flags, ptr );
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}
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/*
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* Win32 Global heap functions (GlobalXXX).
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* These functions included in Win32 for compatibility with 16 bit Windows
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* Especially the moveable blocks and handles are oldish.
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* But the ability to directly allocate memory with GPTR and LPTR is widely
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* used.
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*
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* The handle stuff looks horrible, but it's implemented almost like Win95
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* does it.
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*
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*/
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#define MAGIC_GLOBAL_USED 0x5342
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#define GLOBAL_LOCK_MAX 0xFF
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#define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
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#define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
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#define POINTER_TO_HANDLE(p) (*(((HGLOBAL *)(p))-2))
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#define ISHANDLE(h) (((ULONG_PTR)(h)&2)!=0)
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#define ISPOINTER(h) (((ULONG_PTR)(h)&2)==0)
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/* align the storage needed for the HGLOBAL on an 8byte boundary thus
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* GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
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* size = 8*k, where k=1,2,3,... alloc's exactly the given size.
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* The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
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* the output jpeg's > 1 MB if not */
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#define HGLOBAL_STORAGE 8 /* sizeof(HGLOBAL)*2 */
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#include "pshpack1.h"
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typedef struct __GLOBAL32_INTERN
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{
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WORD Magic;
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LPVOID Pointer;
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BYTE Flags;
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BYTE LockCount;
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} GLOBAL32_INTERN, *PGLOBAL32_INTERN;
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#include "poppack.h"
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/***********************************************************************
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* GlobalAlloc (KERNEL32.@)
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* RETURNS
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* Handle: Success
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* NULL: Failure
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*/
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HGLOBAL WINAPI GlobalAlloc(
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UINT flags, /* [in] Object allocation attributes */
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SIZE_T size /* [in] Number of bytes to allocate */
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) {
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PGLOBAL32_INTERN pintern;
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DWORD hpflags;
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LPVOID palloc;
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if(flags&GMEM_ZEROINIT)
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hpflags=HEAP_ZERO_MEMORY;
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else
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hpflags=0;
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TRACE("() flags=%04x\n", flags );
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if((flags & GMEM_MOVEABLE)==0) /* POINTER */
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{
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palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
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return (HGLOBAL) palloc;
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}
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else /* HANDLE */
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{
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RtlLockHeap(GetProcessHeap());
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pintern = HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN));
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if (pintern)
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{
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pintern->Magic = MAGIC_GLOBAL_USED;
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pintern->Flags = flags >> 8;
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pintern->LockCount = 0;
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if (size)
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{
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palloc = HeapAlloc(GetProcessHeap(), hpflags, size+HGLOBAL_STORAGE);
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if (!palloc)
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{
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HeapFree(GetProcessHeap(), 0, pintern);
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pintern = NULL;
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}
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else
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{
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*(HGLOBAL *)palloc = INTERN_TO_HANDLE(pintern);
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pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
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}
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}
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else
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pintern->Pointer = NULL;
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}
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RtlUnlockHeap(GetProcessHeap());
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return pintern ? INTERN_TO_HANDLE(pintern) : 0;
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}
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}
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/***********************************************************************
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* GlobalLock (KERNEL32.@)
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* RETURNS
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* Pointer to first byte of block
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* NULL: Failure
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*/
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LPVOID WINAPI GlobalLock(
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HGLOBAL hmem /* [in] Handle of global memory object */
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)
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{
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PGLOBAL32_INTERN pintern;
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LPVOID palloc;
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if (ISPOINTER(hmem))
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return IsBadReadPtr(hmem, 1) ? NULL : hmem;
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RtlLockHeap(GetProcessHeap());
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__TRY
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{
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pintern = HANDLE_TO_INTERN(hmem);
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if (pintern->Magic == MAGIC_GLOBAL_USED)
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{
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if (pintern->LockCount < GLOBAL_LOCK_MAX)
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pintern->LockCount++;
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palloc = pintern->Pointer;
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}
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else
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{
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WARN("invalid handle %p\n", hmem);
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palloc = NULL;
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SetLastError(ERROR_INVALID_HANDLE);
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}
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}
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__EXCEPT(page_fault)
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{
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WARN("page fault on %p\n", hmem);
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palloc = NULL;
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SetLastError(ERROR_INVALID_HANDLE);
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}
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__ENDTRY
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RtlUnlockHeap(GetProcessHeap());
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return palloc;
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}
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|
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/***********************************************************************
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* GlobalUnlock (KERNEL32.@)
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* RETURNS
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* TRUE: Object is still locked
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* FALSE: Object is unlocked
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*/
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BOOL WINAPI GlobalUnlock(
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HGLOBAL hmem /* [in] Handle of global memory object */
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) {
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PGLOBAL32_INTERN pintern;
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BOOL locked;
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|
|
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if (ISPOINTER(hmem)) return FALSE;
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RtlLockHeap(GetProcessHeap());
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__TRY
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{
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pintern=HANDLE_TO_INTERN(hmem);
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if(pintern->Magic==MAGIC_GLOBAL_USED)
|
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{
|
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if((pintern->LockCount<GLOBAL_LOCK_MAX)&&(pintern->LockCount>0))
|
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pintern->LockCount--;
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|
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locked = (pintern->LockCount != 0);
|
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if (!locked) SetLastError(NO_ERROR);
|
|
}
|
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else
|
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{
|
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WARN("invalid handle\n");
|
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SetLastError(ERROR_INVALID_HANDLE);
|
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locked=FALSE;
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
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{
|
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ERR("page fault occurred ! Caused by bug ?\n");
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
locked=FALSE;
|
|
}
|
|
__ENDTRY
|
|
RtlUnlockHeap(GetProcessHeap());
|
|
return locked;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalHandle (KERNEL32.@)
|
|
* Returns the handle associated with the specified pointer.
|
|
*
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalHandle(
|
|
LPCVOID pmem /* [in] Pointer to global memory block */
|
|
) {
|
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HGLOBAL handle;
|
|
PGLOBAL32_INTERN maybe_intern;
|
|
LPCVOID test;
|
|
|
|
if (!pmem)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
|
|
RtlLockHeap(GetProcessHeap());
|
|
__TRY
|
|
{
|
|
handle = 0;
|
|
|
|
/* note that if pmem is a pointer to a a block allocated by */
|
|
/* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
|
|
/* will fail. */
|
|
if (ISPOINTER(pmem)) {
|
|
if (HeapValidate( GetProcessHeap(), 0, pmem )) {
|
|
handle = (HGLOBAL)pmem; /* valid fixed block */
|
|
break;
|
|
}
|
|
handle = POINTER_TO_HANDLE(pmem);
|
|
} else
|
|
handle = (HGLOBAL)pmem;
|
|
|
|
/* Now test handle either passed in or retrieved from pointer */
|
|
maybe_intern = HANDLE_TO_INTERN( handle );
|
|
if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
|
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test = maybe_intern->Pointer;
|
|
if (HeapValidate( GetProcessHeap(), 0, (char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
|
|
HeapValidate( GetProcessHeap(), 0, maybe_intern )) /* intern valid arena? */
|
|
break; /* valid moveable block */
|
|
}
|
|
handle = 0;
|
|
SetLastError( ERROR_INVALID_HANDLE );
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
SetLastError( ERROR_INVALID_HANDLE );
|
|
handle = 0;
|
|
}
|
|
__ENDTRY
|
|
RtlUnlockHeap(GetProcessHeap());
|
|
|
|
return handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalReAlloc (KERNEL32.@)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalReAlloc(
|
|
HGLOBAL hmem, /* [in] Handle of global memory object */
|
|
SIZE_T size, /* [in] New size of block */
|
|
UINT flags /* [in] How to reallocate object */
|
|
) {
|
|
LPVOID palloc;
|
|
HGLOBAL hnew;
|
|
PGLOBAL32_INTERN pintern;
|
|
DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
|
|
|
|
hnew = 0;
|
|
RtlLockHeap(GetProcessHeap());
|
|
if(flags & GMEM_MODIFY) /* modify flags */
|
|
{
|
|
if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
|
|
{
|
|
/* make a fixed block moveable
|
|
* actually only NT is able to do this. But it's soo simple
|
|
*/
|
|
if (hmem == 0)
|
|
{
|
|
WARN("GlobalReAlloc with null handle!\n");
|
|
SetLastError( ERROR_NOACCESS );
|
|
hnew = 0;
|
|
}
|
|
else
|
|
{
|
|
size = HeapSize(GetProcessHeap(), 0, (LPVOID)hmem);
|
|
hnew = GlobalAlloc(flags, size);
|
|
palloc = GlobalLock(hnew);
|
|
memcpy(palloc, (LPVOID)hmem, size);
|
|
GlobalUnlock(hnew);
|
|
GlobalFree(hmem);
|
|
}
|
|
}
|
|
else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
|
|
{
|
|
/* change the flags to make our block "discardable" */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
|
|
hnew=hmem;
|
|
}
|
|
else
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
hnew = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(ISPOINTER(hmem))
|
|
{
|
|
/* reallocate fixed memory */
|
|
hnew=(HGLOBAL)HeapReAlloc(GetProcessHeap(), heap_flags, (LPVOID) hmem, size);
|
|
}
|
|
else
|
|
{
|
|
/* reallocate a moveable block */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
#if 0
|
|
/* Apparently Windows doesn't care whether the handle is locked at this point */
|
|
/* See also the same comment in GlobalFree() */
|
|
if(pintern->LockCount>1) {
|
|
ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
} else
|
|
#endif
|
|
if(size!=0)
|
|
{
|
|
hnew=hmem;
|
|
if(pintern->Pointer)
|
|
{
|
|
if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
|
|
(char *) pintern->Pointer-HGLOBAL_STORAGE,
|
|
size+HGLOBAL_STORAGE)) == NULL)
|
|
hnew = 0; /* Block still valid */
|
|
else
|
|
pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
|
|
}
|
|
else
|
|
{
|
|
if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
|
|
== NULL)
|
|
hnew = 0;
|
|
else
|
|
{
|
|
*(HGLOBAL *)palloc = hmem;
|
|
pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(pintern->Pointer)
|
|
{
|
|
HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
|
|
pintern->Pointer=NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
RtlUnlockHeap(GetProcessHeap());
|
|
return hnew;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFree (KERNEL32.@)
|
|
* RETURNS
|
|
* NULL: Success
|
|
* Handle: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalFree(
|
|
HGLOBAL hmem /* [in] Handle of global memory object */
|
|
) {
|
|
PGLOBAL32_INTERN pintern;
|
|
HGLOBAL hreturned;
|
|
|
|
RtlLockHeap(GetProcessHeap());
|
|
__TRY
|
|
{
|
|
hreturned = 0;
|
|
if(ISPOINTER(hmem)) /* POINTER */
|
|
{
|
|
if(!HeapFree(GetProcessHeap(), 0, (LPVOID) hmem)) hmem = 0;
|
|
}
|
|
else /* HANDLE */
|
|
{
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
|
|
/* WIN98 does not make this test. That is you can free a */
|
|
/* block you have not unlocked. Go figure!! */
|
|
/* if(pintern->LockCount!=0) */
|
|
/* SetLastError(ERROR_INVALID_HANDLE); */
|
|
|
|
if(pintern->Pointer)
|
|
if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
|
|
hreturned=hmem;
|
|
if(!HeapFree(GetProcessHeap(), 0, pintern))
|
|
hreturned=hmem;
|
|
}
|
|
}
|
|
}
|
|
__EXCEPT(page_fault)
|
|
{
|
|
ERR("page fault occurred ! Caused by bug ?\n");
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
hreturned = hmem;
|
|
}
|
|
__ENDTRY
|
|
RtlUnlockHeap(GetProcessHeap());
|
|
return hreturned;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalSize (KERNEL32.@)
|
|
* RETURNS
|
|
* Size in bytes of the global memory object
|
|
* 0: Failure
|
|
*/
|
|
SIZE_T WINAPI GlobalSize(
|
|
HGLOBAL hmem /* [in] Handle of global memory object */
|
|
) {
|
|
DWORD retval;
|
|
PGLOBAL32_INTERN pintern;
|
|
|
|
if (!hmem) return 0;
|
|
|
|
if(ISPOINTER(hmem))
|
|
{
|
|
retval=HeapSize(GetProcessHeap(), 0, (LPVOID) hmem);
|
|
}
|
|
else
|
|
{
|
|
RtlLockHeap(GetProcessHeap());
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
|
|
retval = 0;
|
|
else
|
|
{
|
|
retval = HeapSize(GetProcessHeap(), 0,
|
|
(char *)(pintern->Pointer) - HGLOBAL_STORAGE );
|
|
if (retval != (DWORD)-1) retval -= HGLOBAL_STORAGE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WARN("invalid handle\n");
|
|
retval=0;
|
|
}
|
|
RtlUnlockHeap(GetProcessHeap());
|
|
}
|
|
/* HeapSize returns 0xffffffff on failure */
|
|
if (retval == 0xffffffff) retval = 0;
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalWire (KERNEL32.@)
|
|
*/
|
|
LPVOID WINAPI GlobalWire(HGLOBAL hmem)
|
|
{
|
|
return GlobalLock( hmem );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnWire (KERNEL32.@)
|
|
*/
|
|
BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
|
|
{
|
|
return GlobalUnlock( hmem);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFix (KERNEL32.@)
|
|
*/
|
|
VOID WINAPI GlobalFix(HGLOBAL hmem)
|
|
{
|
|
GlobalLock( hmem );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnfix (KERNEL32.@)
|
|
*/
|
|
VOID WINAPI GlobalUnfix(HGLOBAL hmem)
|
|
{
|
|
GlobalUnlock( hmem);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFlags (KERNEL32.@)
|
|
* Returns information about the specified global memory object
|
|
*
|
|
* NOTES
|
|
* Should this return GMEM_INVALID_HANDLE on invalid handle?
|
|
*
|
|
* RETURNS
|
|
* Value specifying allocation flags and lock count
|
|
* GMEM_INVALID_HANDLE: Failure
|
|
*/
|
|
UINT WINAPI GlobalFlags(
|
|
HGLOBAL hmem /* [in] Handle to global memory object */
|
|
) {
|
|
DWORD retval;
|
|
PGLOBAL32_INTERN pintern;
|
|
|
|
if(ISPOINTER(hmem))
|
|
{
|
|
retval=0;
|
|
}
|
|
else
|
|
{
|
|
RtlLockHeap(GetProcessHeap());
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
retval=pintern->LockCount + (pintern->Flags<<8);
|
|
if(pintern->Pointer==0)
|
|
retval|= GMEM_DISCARDED;
|
|
}
|
|
else
|
|
{
|
|
WARN("Invalid handle: %p\n", hmem);
|
|
retval=0;
|
|
}
|
|
RtlUnlockHeap(GetProcessHeap());
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalCompact (KERNEL32.@)
|
|
*/
|
|
SIZE_T WINAPI GlobalCompact( DWORD minfree )
|
|
{
|
|
return 0; /* GlobalCompact does nothing in Win32 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalAlloc (KERNEL32.@)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HLOCAL WINAPI LocalAlloc(
|
|
UINT flags, /* [in] Allocation attributes */
|
|
SIZE_T size /* [in] Number of bytes to allocate */
|
|
) {
|
|
return (HLOCAL)GlobalAlloc( flags, size );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalCompact (KERNEL32.@)
|
|
*/
|
|
SIZE_T WINAPI LocalCompact( UINT minfree )
|
|
{
|
|
return 0; /* LocalCompact does nothing in Win32 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFlags (KERNEL32.@)
|
|
* RETURNS
|
|
* Value specifying allocation flags and lock count.
|
|
* LMEM_INVALID_HANDLE: Failure
|
|
*/
|
|
UINT WINAPI LocalFlags(
|
|
HLOCAL handle /* [in] Handle of memory object */
|
|
) {
|
|
return GlobalFlags( (HGLOBAL)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFree (KERNEL32.@)
|
|
* RETURNS
|
|
* NULL: Success
|
|
* Handle: Failure
|
|
*/
|
|
HLOCAL WINAPI LocalFree(
|
|
HLOCAL handle /* [in] Handle of memory object */
|
|
) {
|
|
return (HLOCAL)GlobalFree( (HGLOBAL)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalHandle (KERNEL32.@)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HLOCAL WINAPI LocalHandle(
|
|
LPCVOID ptr /* [in] Address of local memory object */
|
|
) {
|
|
return (HLOCAL)GlobalHandle( ptr );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalLock (KERNEL32.@)
|
|
* Locks a local memory object and returns pointer to the first byte
|
|
* of the memory block.
|
|
*
|
|
* RETURNS
|
|
* Pointer: Success
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI LocalLock(
|
|
HLOCAL handle /* [in] Address of local memory object */
|
|
) {
|
|
return GlobalLock( (HGLOBAL)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalReAlloc (KERNEL32.@)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HLOCAL WINAPI LocalReAlloc(
|
|
HLOCAL handle, /* [in] Handle of memory object */
|
|
SIZE_T size, /* [in] New size of block */
|
|
UINT flags /* [in] How to reallocate object */
|
|
) {
|
|
return (HLOCAL)GlobalReAlloc( (HGLOBAL)handle, size, flags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalShrink (KERNEL32.@)
|
|
*/
|
|
SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
|
|
{
|
|
return 0; /* LocalShrink does nothing in Win32 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalSize (KERNEL32.@)
|
|
* RETURNS
|
|
* Size: Success
|
|
* 0: Failure
|
|
*/
|
|
SIZE_T WINAPI LocalSize(
|
|
HLOCAL handle /* [in] Handle of memory object */
|
|
) {
|
|
return GlobalSize( (HGLOBAL)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalUnlock (KERNEL32.@)
|
|
* RETURNS
|
|
* TRUE: Object is still locked
|
|
* FALSE: Object is unlocked
|
|
*/
|
|
BOOL WINAPI LocalUnlock(
|
|
HLOCAL handle /* [in] Handle of memory object */
|
|
) {
|
|
return GlobalUnlock( (HGLOBAL)handle );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* AllocMappedBuffer (KERNEL32.38)
|
|
*
|
|
* This is a undocumented KERNEL32 function that
|
|
* SMapLS's a GlobalAlloc'ed buffer.
|
|
*
|
|
* Input: EDI register: size of buffer to allocate
|
|
* Output: EDI register: pointer to buffer
|
|
*
|
|
* Note: The buffer is preceded by 8 bytes:
|
|
* ...
|
|
* edi+0 buffer
|
|
* edi-4 SEGPTR to buffer
|
|
* edi-8 some magic Win95 needs for SUnMapLS
|
|
* (we use it for the memory handle)
|
|
*
|
|
* The SEGPTR is used by the caller!
|
|
*/
|
|
void WINAPI AllocMappedBuffer( CONTEXT86 *context )
|
|
{
|
|
HGLOBAL handle = GlobalAlloc(0, context->Edi + 8);
|
|
DWORD *buffer = (DWORD *)GlobalLock(handle);
|
|
DWORD ptr = 0;
|
|
|
|
if (buffer)
|
|
if (!(ptr = MapLS(buffer + 2)))
|
|
{
|
|
GlobalUnlock(handle);
|
|
GlobalFree(handle);
|
|
}
|
|
|
|
if (!ptr)
|
|
context->Eax = context->Edi = 0;
|
|
else
|
|
{
|
|
buffer[0] = (DWORD)handle;
|
|
buffer[1] = ptr;
|
|
|
|
context->Eax = (DWORD) ptr;
|
|
context->Edi = (DWORD)(buffer + 2);
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* FreeMappedBuffer (KERNEL32.39)
|
|
*
|
|
* Free a buffer allocated by AllocMappedBuffer
|
|
*
|
|
* Input: EDI register: pointer to buffer
|
|
*/
|
|
void WINAPI FreeMappedBuffer( CONTEXT86 *context )
|
|
{
|
|
if (context->Edi)
|
|
{
|
|
DWORD *buffer = (DWORD *)context->Edi - 2;
|
|
|
|
UnMapLS(buffer[1]);
|
|
|
|
GlobalUnlock((HGLOBAL)buffer[0]);
|
|
GlobalFree((HGLOBAL)buffer[0]);
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalMemoryStatus (KERNEL32.@)
|
|
* Provides information about the status of the memory, so apps can tell
|
|
* roughly how much they are able to allocate
|
|
*
|
|
* RETURNS
|
|
* None
|
|
*/
|
|
VOID WINAPI GlobalMemoryStatus(
|
|
LPMEMORYSTATUS lpmem
|
|
) {
|
|
static MEMORYSTATUS cached_memstatus;
|
|
static int cache_lastchecked = 0;
|
|
SYSTEM_INFO si;
|
|
#ifdef linux
|
|
FILE *f;
|
|
#endif
|
|
#if defined(__FreeBSD__) || defined(__NetBSD__)
|
|
int *tmp;
|
|
int size_sys;
|
|
int mib[2] = { CTL_HW };
|
|
#endif
|
|
if (time(NULL)==cache_lastchecked) {
|
|
memcpy(lpmem,&cached_memstatus,sizeof(MEMORYSTATUS));
|
|
return;
|
|
}
|
|
cache_lastchecked = time(NULL);
|
|
|
|
lpmem->dwMemoryLoad = 0;
|
|
lpmem->dwTotalPhys = 16*1024*1024;
|
|
lpmem->dwAvailPhys = 16*1024*1024;
|
|
lpmem->dwTotalPageFile = 16*1024*1024;
|
|
lpmem->dwAvailPageFile = 16*1024*1024;
|
|
|
|
#ifdef linux
|
|
f = fopen( "/proc/meminfo", "r" );
|
|
if (f)
|
|
{
|
|
char buffer[256];
|
|
int total, used, free, shared, buffers, cached;
|
|
|
|
lpmem->dwLength = sizeof(MEMORYSTATUS);
|
|
lpmem->dwTotalPhys = lpmem->dwAvailPhys = 0;
|
|
lpmem->dwTotalPageFile = lpmem->dwAvailPageFile = 0;
|
|
while (fgets( buffer, sizeof(buffer), f ))
|
|
{
|
|
/* old style /proc/meminfo ... */
|
|
if (sscanf( buffer, "Mem: %d %d %d %d %d %d", &total, &used, &free, &shared, &buffers, &cached ))
|
|
{
|
|
lpmem->dwTotalPhys += total;
|
|
lpmem->dwAvailPhys += free + buffers + cached;
|
|
}
|
|
if (sscanf( buffer, "Swap: %d %d %d", &total, &used, &free ))
|
|
{
|
|
lpmem->dwTotalPageFile += total;
|
|
lpmem->dwAvailPageFile += free;
|
|
}
|
|
|
|
/* new style /proc/meminfo ... */
|
|
if (sscanf(buffer, "MemTotal: %d", &total))
|
|
lpmem->dwTotalPhys = total*1024;
|
|
if (sscanf(buffer, "MemFree: %d", &free))
|
|
lpmem->dwAvailPhys = free*1024;
|
|
if (sscanf(buffer, "SwapTotal: %d", &total))
|
|
lpmem->dwTotalPageFile = total*1024;
|
|
if (sscanf(buffer, "SwapFree: %d", &free))
|
|
lpmem->dwAvailPageFile = free*1024;
|
|
if (sscanf(buffer, "Buffers: %d", &buffers))
|
|
lpmem->dwAvailPhys += buffers*1024;
|
|
if (sscanf(buffer, "Cached: %d", &cached))
|
|
lpmem->dwAvailPhys += cached*1024;
|
|
}
|
|
fclose( f );
|
|
|
|
if (lpmem->dwTotalPhys)
|
|
{
|
|
DWORD TotalPhysical = lpmem->dwTotalPhys+lpmem->dwTotalPageFile;
|
|
DWORD AvailPhysical = lpmem->dwAvailPhys+lpmem->dwAvailPageFile;
|
|
lpmem->dwMemoryLoad = (TotalPhysical-AvailPhysical)
|
|
/ (TotalPhysical / 100);
|
|
}
|
|
}
|
|
#elif defined(__FreeBSD__) || defined(__NetBSD__)
|
|
mib[1] = HW_PHYSMEM;
|
|
sysctl(mib, 2, NULL, &size_sys, NULL, 0);
|
|
tmp = malloc(size_sys * sizeof(int));
|
|
sysctl(mib, 2, tmp, &size_sys, NULL, 0);
|
|
if (tmp && *tmp)
|
|
{
|
|
lpmem->dwTotalPhys = *tmp;
|
|
free(tmp);
|
|
mib[1] = HW_USERMEM;
|
|
sysctl(mib, 2, NULL, &size_sys, NULL, 0);
|
|
tmp = malloc(size_sys * sizeof(int));
|
|
sysctl(mib, 2, tmp, &size_sys, NULL, 0);
|
|
if (tmp && *tmp)
|
|
{
|
|
lpmem->dwAvailPhys = *tmp;
|
|
lpmem->dwTotalPageFile = *tmp;
|
|
lpmem->dwAvailPageFile = *tmp;
|
|
lpmem->dwMemoryLoad = lpmem->dwTotalPhys - lpmem->dwAvailPhys;
|
|
} else
|
|
{
|
|
lpmem->dwAvailPhys = lpmem->dwTotalPhys;
|
|
lpmem->dwTotalPageFile = lpmem->dwTotalPhys;
|
|
lpmem->dwAvailPageFile = lpmem->dwTotalPhys;
|
|
lpmem->dwMemoryLoad = 0;
|
|
}
|
|
free(tmp);
|
|
|
|
}
|
|
#endif
|
|
/* Some applications (e.g. QuickTime 6) crash if we tell them there
|
|
* is more than 2GB of physical memory.
|
|
*/
|
|
if (lpmem->dwTotalPhys>2U*1024*1024*1024)
|
|
{
|
|
lpmem->dwTotalPhys=2U*1024*1024*1024;
|
|
lpmem->dwAvailPhys=2U*1024*1024*1024;
|
|
}
|
|
|
|
/* FIXME: should do something for other systems */
|
|
GetSystemInfo(&si);
|
|
lpmem->dwTotalVirtual = (char*)si.lpMaximumApplicationAddress-(char*)si.lpMinimumApplicationAddress;
|
|
/* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
|
|
lpmem->dwAvailVirtual = lpmem->dwTotalVirtual-64*1024;
|
|
memcpy(&cached_memstatus,lpmem,sizeof(MEMORYSTATUS));
|
|
|
|
/* it appears some memory display programs want to divide by these values */
|
|
if(lpmem->dwTotalPageFile==0)
|
|
lpmem->dwTotalPageFile++;
|
|
|
|
if(lpmem->dwAvailPageFile==0)
|
|
lpmem->dwAvailPageFile++;
|
|
|
|
TRACE("<-- LPMEMORYSTATUS: dwLength %ld, dwMemoryLoad %ld, dwTotalPhys %ld, dwAvailPhys %ld,"
|
|
" dwTotalPageFile %ld, dwAvailPageFile %ld, dwTotalVirtual %ld, dwAvailVirtual %ld\n",
|
|
lpmem->dwLength, lpmem->dwMemoryLoad, lpmem->dwTotalPhys, lpmem->dwAvailPhys,
|
|
lpmem->dwTotalPageFile, lpmem->dwAvailPageFile, lpmem->dwTotalVirtual,
|
|
lpmem->dwAvailVirtual);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalMemoryStatusEx (KERNEL32.@)
|
|
* A version of GlobalMemoryStatus that can deal with memory over 4GB
|
|
*
|
|
* RETURNS
|
|
* None
|
|
*/
|
|
BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpBuffer )
|
|
{
|
|
MEMORYSTATUS memstatus;
|
|
|
|
/* Because GlobalMemoryStatusEx is identical to GlobalMemoryStatus save
|
|
for one extra field in the struct, and the lack of a bug, we simply
|
|
call GlobalMemoryStatus and copy the values across. */
|
|
FIXME("we should emulate the 4GB bug here, as per MSDN\n");
|
|
GlobalMemoryStatus(&memstatus);
|
|
lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;
|
|
lpBuffer->ullTotalPhys = memstatus.dwTotalPhys;
|
|
lpBuffer->ullAvailPhys = memstatus.dwAvailPhys;
|
|
lpBuffer->ullTotalPageFile = memstatus.dwTotalPageFile;
|
|
lpBuffer->ullAvailPageFile = memstatus.dwAvailPageFile;
|
|
lpBuffer->ullTotalVirtual = memstatus.dwTotalVirtual;
|
|
lpBuffer->ullAvailVirtual = memstatus.dwAvailVirtual;
|
|
/* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
|
|
memory in the extended portion of the virtual address space of the calling
|
|
process, in bytes.
|
|
However, I don't know what this means, so set it to zero :(
|
|
*/
|
|
lpBuffer->ullAvailExtendedVirtual = 0;
|
|
return 1;
|
|
}
|