+ Removed references to old memory manager functions

docs/prog.tex

@@ -4232,7 +4232,7 @@ More information on using the \var{heaptrc} mechanism can be found in the
 \subsection{Writing your own memory manager}
 
 \fpc allows you to write and use your own memory manager. The standard
-functions \var{GetMem}, \var{FreeMem}, \var{ReallocMem} and \var{Maxavail}
+functions \var{GetMem}, \var{FreeMem}, \var{ReallocMem} etc.
 use a special record in the \file{system} unit to do the actual memory management.
 The \file{system} unit initializes this record with the \file{system} unit's own memory
 manager, but you can read and set this record using the
@@ -4251,9 +4251,8 @@ the \var{TMemoryManager} record is defined as follows:
     AllocMem    : Function(Size:longint):Pointer;
     ReAllocMem  : Function(var p:pointer;Size:longint):Pointer;
     MemSize     : function(p:pointer):Longint;
-    MemAvail    : Function:Longint;
-    MaxAvail    : Function:Longint;
-    HeapSize    : Function:Longint;
+    GetHeapStatus       : function :THeapStatus;
+    GetFPCHeapStatus    : function :TFPCHeapStatus;
   end;
 \end{verbatim}
 
@@ -4288,11 +4287,12 @@ behaviour is equivalent to \var{GetMem}.
 \item[MemSize] should return the total amount of memory available for
 allocation. This function may return zero if the memory manager does not
 allow to determine this information.
-\item[MaxAvail] should return the size of the largest block of memory that
-is still available for allocation. This function may return zero if the
-memory manager does not allow to determine this information.
-\item[HeapSize] should return the total size of the heap. This may be zero
-is the memory manager does not allow to determine this information.
+\item[GetHeapStatus] should return a \var{THeapStatus} record with the
+status of the memory manager. This record should be filled with
+Delphi-compliant values.
+\item[GetHeapStatus] should return a \var{TFPCHeapStatus} record with the
+status of the memory manager. This record should be filled with
+FPC-Compliant values.
 \end{description}
 To implement your own memory manager, it is sufficient to construct such a
 record and to issue a call to \var{SetMemoryManager}.
@@ -4370,24 +4370,6 @@ begin
   Result:=0;
 end;
 
-Function CMemAvail : Longint;
-
-begin
-  Result:=0;
-end;
-
-Function CMaxAvail: Longint;
-
-begin
-  Result:=0;
-end;
-
-Function CHeapSize : Longint;
-
-begin
-  Result:=0;
-end;
-
 
 Const
  CMemoryManager : TMemoryManager =
@@ -4398,9 +4380,8 @@ Const
       AllocMem : CAllocMem;
       ReallocMem : CReAllocMem;
       MemSize : CMemSize;
-      MemAvail : CMemAvail;
-      MaxAvail : MaxAvail;
-      HeapSize : CHeapSize;
+      GetHeapStatus : Nil;
+      GetFPCHeapStatus : Nil;
     );
 
 Var

docs/system.xml

@@ -216,8 +216,6 @@ The heap manager uses the <var>TMemoryManager</var> type:
     AllocMem    : Function(Size:longint):Pointer;
     ReAllocMem  : Function(var p:pointer;Size:longint):Pointer;
     MemSize     : function(p:pointer):Longint;
-    MemAvail    : Function:Longint;
-    MaxAvail    : Function:Longint;
     HeapSize    : Function:Longint;
   end;
 </code>
@@ -2246,72 +2244,6 @@ None.
 
 
 
-<element name="Mark">
-<short>Mark current memory position</short>
-<descr>
-This routine is here for compatibility with Turbo Pascal, but
-it is not implemented and currently does nothing.
-</descr>
-<errors>
-None.
-</errors>
-<seealso>
-<link id="Getmem"/>
-<link id="Freemem"/>
-<link id="New"/>
-<link id="Dispose"/>
-<link id="Maxavail"/>
-</seealso>
-</element>
-
-<element name="Maxavail">
-<short>Return size of largest free memory block</short>
-<descr>
-<p>
-<var>Maxavail</var> returns the size, in bytes, of the biggest free memory block in
-the heap.
-</p>
-<remark>
-The heap grows dynamically if more memory is needed than is available.
-</remark>
-</descr>
-<errors>
-None.
-</errors>
-<seealso>
-<link id="Memavail"/>
-<link id="Freemem"/>
-<link id="Getmem"/>
-</seealso>
-<example file="refex/ex40"/>
-</element>
-
-
-
-<element name="Memavail">
-<short>Return total available memory</short>
-<descr>
-<p>
-<var>Memavail</var> returns the size, in bytes, of the free heap memory.
-</p>
-<remark>
-The heap grows dynamically if more memory is needed than is available. The
-heap size is not equal to the size of the memory available to the
-operating system, it is internal to the programs created by Free Pascal.
-</remark>
-</descr>
-<errors>
-None.
-</errors>
-<seealso>
-<link id="Maxavail"/>
-<link id="Freemem"/>
-<link id="Getmem"/>
-</seealso>
-<example file="refex/ex41"/>
-</element>
-
-
 
 <element name="Mkdir">
 <short>Create a new directory.</short>
@@ -2751,33 +2683,12 @@ can be assigned directly to a double or extended.
 <errors>
 None.
 </errors>
-<seealso>
-</seealso>
+<seealso></seealso>
 <example file="refex/ex110"/>
 </element>
 
 
 
-<element name="Release">
-<short>Release memory above mark point</short>
-<descr>
-This routine is here for compatibility with Turbo Pascal, but
-it is not implemented and currently does nothing.
-</descr>
-<errors>
-None.
-</errors>
-<seealso>
-<link id="Mark"/>
-<link id="Memavail"/>
-<link id="Maxavail"/>
-<link id="Getmem"/>
-<link id="Freemem"/>
-<link id="New"/>
-<link id="Dispose"/>
-</seealso>
-</element>
-
 <element name="Rename">
 <short>Rename file on disk</short>
 <descr>