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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "NdbMem.h"
#if defined NDB_OSE
#include <ose.h>
#include <mms.sig>
#include <mms_err.h>
#include <string.h>
#include <stdio.h>
#include <NdbOut.hpp>
// Page size for mp750 is 4096 bytes.
#define PAGE_SIZE 4096
/**
* NOTE: To use NdbMem from a OSE system ose_mms has to be defined
* as a "Required External Process"(see OSE Kernel User's Guide/R1.1(p. 148)),
* like this in osemain.con:
* EXT_PROC(ose_mms, ose_mms, 50000)
* This will create a global variable ose_mms_ that is used from here.
*/
union SIGNAL
{
SIGSELECT sigNo;
struct MmsAllocateRegionRequest mmsAllocateRegionRequest;
struct MmsAllocateRegionReply mmsAllocateRegionReply;
struct MmsFreeRegionRequest mmsFreeRegionRequest;
struct MmsFreeRegionReply mmsFreeRegionReply;
}; /* union SIGNAL */
extern PROCESS ose_mms_;
void NdbMem_Create(void)
{
/* Do nothing */
return;
}
void NdbMem_Destroy(void)
{
/* Do nothing */
return;
}
void* NdbMem_Allocate(size_t size)
{
static SIGSELECT allocate_sig[] = {1,MMS_ALLOCATE_REGION_REPLY};
union SIGNAL *sig;
U32 allocatedAdress;
assert(size > 0);
// Only allowed to allocate multiples of the page size.
if(size % PAGE_SIZE != 0) {
size += PAGE_SIZE - size%PAGE_SIZE;
}
/* Allocate a new region in the callers memory segment. */
sig = alloc(sizeof(struct MmsAllocateRegionRequest),
MMS_ALLOCATE_REGION_REQUEST);
/* -1: The callers domain is used */
sig->mmsAllocateRegionRequest.domain = (MemoryDomain)-1;
sig->mmsAllocateRegionRequest.useAddr = False;
sig->mmsAllocateRegionRequest.size = size;
sig->mmsAllocateRegionRequest.access = SuperRW_UserRW;
sig->mmsAllocateRegionRequest.resident = False;
sig->mmsAllocateRegionRequest.memory = CodeData;
sig->mmsAllocateRegionRequest.cache = CopyBack;
strcpy(sig->mmsAllocateRegionRequest.name, "NDB_DATA");
send(&sig, ose_mms_);
sig = receive(allocate_sig);
if (sig->mmsAllocateRegionReply.status != MMS_SUCCESS){
/* Memory allocation failed, make sure this function returns NULL */
allocatedAdress = NULL;
}
else{
allocatedAdress = sig->mmsAllocateRegionReply.address;
}
free_buf(&sig);
return (void*)allocatedAdress;
}
void* NdbMem_AllocateAlign(size_t size, size_t alignment)
{
return NdbMem_Allocate(size);
}
void NdbMem_Free(void* ptr)
{
static SIGSELECT free_sig[] = {1,MMS_FREE_REGION_REPLY};
union SIGNAL *sig;
/* Free a region in the callers domain. */
sig = alloc(sizeof(struct MmsFreeRegionRequest),
MMS_FREE_REGION_REQUEST);
sig->mmsFreeRegionRequest.address = (U32)ptr;
send(&sig, ose_mms_);
sig = receive(free_sig);
if (sig->mmsFreeRegionReply.status != MMS_SUCCESS){
ndbout_c("The MMS Region could not be deallocated.\r\n");
error(sig->mmsFreeRegionReply.status);
};
free_buf(&sig);
}
int NdbMem_MemLockAll(){
return -1;
}
int NdbMem_MemUnlockAll(){
return -1;
}
#else
#include <stdlib.h>
void NdbMem_Create()
{
/* Do nothing */
return;
}
void NdbMem_Destroy()
{
/* Do nothing */
return;
}
void* NdbMem_Allocate(size_t size)
{
assert(size > 0);
return (void*)malloc(size);
}
void* NdbMem_AllocateAlign(size_t size, size_t alignment)
{
/*
return (void*)memalign(alignment, size);
TEMP fix
*/
return (void*)malloc(size);
}
void NdbMem_Free(void* ptr)
{
free(ptr);
}
int NdbMem_MemLockAll(){
return -1;
}
int NdbMem_MemUnlockAll(){
return -1;
}
#endif
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