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/*
* Copyright (c) 2003-2014 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation, Steven Munroe - initial API and implementation
*/
#define sas_printf printf
#include <stdio.h>
#include <stdlib.h>
#include "sasallocpriv.h"
#include "freenode.h"
#ifdef __SASDebugPrint__
#include "sasio.h"
#endif
#include "sasanchr.h"
#include "sassim.h"
#include "saslock.h"
#include "sphcontext.h"
#include "sphcontextpriv.h"
#include "sassimpleheap.h"
#include "sasstringbtree.h"
#include "sasstringbtreeenum.h"
#include "sasindex.h"
#include "sasindexenum.h"
#include "sasindexkey.h"
struct SPHContextHeader;
typedef struct SPHContextExpandList {
block_size_t count;
block_size_t max_count;
SPHContextHeader *heap[254];
} SPHContextExpandList;
typedef struct SPHContextHeader {
SASBlockHeader blockHeader;
block_size_t pageSize;
SASIndex_t objID;
SASStringBTree_t name;
void *dummy3;
void *dummy4;
void *dummy5;
SPHContextExpandList *expandList;
freeNode *headerFreeSpace;
} SPHContextHeader;
#ifdef __WORDSIZE_64
# ifdef __s390x__
# define DEFAULT_BLOCK (1024*1024)
# else
# define DEFAULT_BLOCK (4096*4096)
# endif
#else
#define DEFAULT_BLOCK (1024*1024)
#endif
static SPHContext_t currentContext = NULL;
SPHContext_t
SPHContextInit (void* heap_seg, sas_type_t sasType,
block_size_t heap_size)
{
SASBlockHeader *heapBlock = (SASBlockHeader*)heap_seg;
char *heapStart = NULL;
if ( heapBlock )
{
heapStart = (char*) heapBlock + heap_offset;
initSOMSASBlock(heapBlock, sasType,
heap_size, heapStart);
}
return (SPHContext_t)heapBlock;
}
SPHContext_t
SPHContextCreate (block_size_t heap_size)
{
SASBlockHeader *heapBlock = NULL;
SPHContext_t result;
heapBlock = (SASBlockHeader*)SASBlockAlloc ((long)heap_size);
if ( heapBlock )
{
result = SPHContextInit(heapBlock,
SAS_RUNTIME_CONTEXT,
heap_size);
if (result != NULL)
{
SPHContextHeader *header = (SPHContextHeader*) result;
header->name = SASStringBTreeCreate (DEFAULT_BLOCK);
#ifdef __SASDebugPrint__
if (header->name)
sas_printf("SPHContextAlloc BTree=%p\n", header->name);
else
sas_printf("SPHContextAlloc() BTree create failed\n");
#endif
header->objID = SASIndexCreate (DEFAULT_BLOCK);
#ifdef __SASDebugPrint__
if (header->objID)
sas_printf("SPHContextAlloc Index=%p\n", header->objID);
else
sas_printf("SPHContextAlloc() Index create failed\n");
#endif
}
return result;
} else
return NULL;
}
void *
SPHContextAllocNoLock (SPHContext_t heap,
block_size_t alloc_size)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
block_size_t heapSize;
freeNode *mem = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
heapSize = headerBlock->blockSize - heap_offset;
if ( alloc_size < heapSize )
{
mem = freeNode_allocSpace(headerBlock->blockFreeSpace,
&headerBlock->blockFreeSpace, alloc_size);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextAlloc(%p, %zu) range check failed\n",
heap, alloc_size);
#endif
}
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextAlloc(%p, %zu) type check failed\n",
heap, alloc_size);
#endif
}
return mem;
}
int
SPHContextFreeNoLock (SPHContext_t heap,
void* free_block,
block_size_t alloc_size)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
block_size_t heapSize;
freeNode *free_node = (freeNode*)free_block;
int rc;
freeNode_init(free_node, alloc_size);
if ( SOMSASCheckBlockSigAndType (headerBlock, SAS_SIMPLEHEAP_TYPE) )
{
heapSize = headerBlock->blockSize - heap_offset;
if (( alloc_size < heapSize )
&& ( (unsigned long)free_block >= ((unsigned long)headerBlock + heap_offset) ) )
{
freeNode_deallocSpace(free_node, &headerBlock->blockFreeSpace, alloc_size);
rc = 0;
} else {
rc = -2;
#ifdef __SASDebugPrint__
sas_printf("SPHContextFree(%p, %p, %zu) range check failed\n",
heap, free_block, alloc_size);
#endif
}
} else {
rc = -1;
#ifdef __SASDebugPrint__
sas_printf("SPHContextFree(%p, ...) does not match type/subtype\n",
heap);
#endif
}
return rc;
}
int
SPHContextAddNameNoLock (SPHContext_t contxt, char *key, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
int rc = 0;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
char *buff;
block_size_t alloc_size = strlen(key) + 1;
buff = (char*) SPHContextAllocNoLock(contxt, alloc_size);
if (buff)
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
SASIndexKey_t keyID;
buff = strcpy(buff, key);
rc = SASStringBTreePut(header->name, key, value);
if (rc)
{
SASIndexKeyInitRef (&keyID, value);
rc = SASIndexPut (header->objID, &keyID, buff);
if (!rc)
{
#ifdef __SASDebugPrint__
sas_printf("SPHContextAddNameNoLock(%p, %s, %p) Duplicate ObjID\n",
contxt, key, value);
#endif
SASStringBTreeRemove (header->name, key);
SPHContextFreeNoLock(contxt, buff, alloc_size);
}
} else {
#ifdef __SASDebugPrint__
sas_printf("SPHContextAddNameNoLock(%p, %s, %p) Duplicate Name\n",
contxt, key, value);
#endif
SPHContextFreeNoLock(contxt, buff, alloc_size);
}
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextAddNameNoLock(%p, %s, %p) alloc failed\n",
contxt, key, value);
#endif
}
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextAddNameNoLock(%p, %s, %p) type check failed\n",
contxt, key, value);
#endif
}
return rc;
}
int
SPHContextAddName (SPHContext_t contxt, char *key, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
int result = 0;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(contxt, SasUserLock__WRITE);
result = SPHContextAddNameNoLock(contxt, key, value);
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextAddName(%p, %s, %p) type check failed\n",
contxt, key, value);
#endif
}
return result;
}
void*
SPHContextFindByNameNoLock (SPHContext_t contxt, char *key)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
void *result = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
result = SASStringBTreeGet(header->name, key);
#ifdef __SASDebugPrint__
if (!result)
sas_printf("SPHContextFindByNameNoLock(%p, %s) not found\n",
contxt, key);
#endif
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextFindByNameNoLock(%p, %s) type check failed\n",
contxt, key);
#endif
}
return result;
}
void*
SPHContextFindByAddrNoLock (SPHContext_t contxt, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
void *result = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
SASIndexKey_t keyID;
SASIndexKeyInitRef (&keyID, value);
result = SASIndexGet (header->objID, &keyID);
#ifdef __SASDebugPrint__
if (result)
sas_printf("SPHContextFindByAddrNoLock(%p, %p) not found\n",
contxt, value);
#endif
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextFindByAddrNoLock(%p, %p) type check failed\n",
contxt, value);
#endif
}
return result;
}
SASStringBTreeEnum_t
SPHContextGetNameEnum (SPHContext_t contxt)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
SASStringBTreeEnum_t result = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
SASLock(contxt, SasUserLock__READ);
result = SASStringBTreeEnumCreate( header->name );
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextGetNameEnum(%p) type check failed\n",
contxt);
#endif
}
return result;
}
void*
SPHContextFindByName (SPHContext_t contxt, char *key)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
void *result = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(contxt, SasUserLock__READ);
result = SPHContextFindByNameNoLock(contxt, key);
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextFindByName(%p, %s) type check failed\n",
contxt, key);
#endif
}
return result;
}
void*
SPHContextFindByAddr (SPHContext_t contxt, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
void *result = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(contxt, SasUserLock__READ);
result = SPHContextFindByAddrNoLock(contxt, value);
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextFindByAddr(%p, %p) type check failed\n",
contxt, value);
#endif
}
return result;
}
int
SPHContextRemoveByNameNoLock (SPHContext_t contxt, char *key)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
void *value = NULL;
int result = -1;
int rc = 0;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
SASIndexKey_t keyID;
char *strbuff = NULL;
value = SASStringBTreeGet(header->name, key);
if (value)
{
SASIndexKeyInitRef (&keyID, value);
rc++;
strbuff = (char*)SASIndexGet (header->objID, &keyID);
if (strbuff)
{
int strsize = strlen(strbuff) + 1;
rc = SPHContextFreeNoLock (contxt, strbuff, strsize);
if (rc)
{
result = -1;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByNameNoLock(%p, %s) free@%p failed\n",
contxt, key, strbuff);
#endif
} else {
result = 0;
SASIndexRemove (header->objID, &keyID);
SASStringBTreeRemove (header->name, key);
}
}
} else {
result = -3;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByNameNoLock(%p, %s) not found\n",
contxt, key);
#endif
}
} else {
result = -4;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByNameNoLock(%p, %s) type check failed\n",
contxt, key);
#endif
}
return result;
}
int
SPHContextRename (SPHContext_t contxt, char *oldkey, char *newkey, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
void *oldval;
int result = 0;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(contxt, SasUserLock__WRITE);
oldval = SPHContextFindByNameNoLock(contxt, oldkey);
if (oldval && (oldval == value))
{
SPHContextRemoveByNameNoLock(contxt,oldkey);
result = SPHContextAddNameNoLock(contxt, newkey, value);
}
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextRename(%p, %s, %s, %p) type check failed\n",
contxt, oldkey, newkey, value);
#endif
}
return result;
}
int
SPHContextRemoveByAddrNoLock (SPHContext_t contxt, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
int result = 0;
int rc;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
SASIndexKey_t keyID;
char *strbuff;
SASIndexKeyInitRef (&keyID, value);
strbuff = (char*)SASIndexGet (header->objID, &keyID);
if (strbuff)
{
void *val2;
int strsize = strlen(strbuff);
val2 = (char*)SASStringBTreeGet(header->name, strbuff);
if (value == val2)
{
SASIndexRemove (header->objID, &keyID);
SASStringBTreeRemove (header->name, strbuff);
rc = SPHContextFreeNoLock (contxt, strbuff, strsize);
if (rc)
{
result = -1;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByAddrNoLock(%p, %p) free@%p failed\n",
contxt, value, strbuff);
#endif
} else {
result = 0;
}
} else {
result = -2;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByAddrNoLock(%p, %p) %p!=%p\n",
contxt, value, value, val2);
#endif
}
} else {
result = -3;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByAddrNoLock(%p, %p) not found\n",
contxt, value);
#endif
}
} else {
result = -4;
#ifdef __SASDebugPrint__
sas_printf("SPHContextRemoveByAddrNoLock(%p, %p) type check failed\n",
contxt, value);
#endif
}
return result;
}
int
SPHContextRemoveByName (SPHContext_t contxt, char *key)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
int result = -1;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(contxt, SasUserLock__WRITE);
result = SPHContextRemoveByNameNoLock(contxt, key);
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextRemoveByName(%p, %s) type check failed\n",
contxt, key);
#endif
}
return result;
}
int
SPHContextRemoveByAddr (SPHContext_t contxt, void *value)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)contxt;
int result = -1;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(contxt, SasUserLock__WRITE);
result = SPHContextRemoveByAddrNoLock(contxt, value);
SASUnlock(contxt);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextRemoveByAddr(%p, %p) type check failed\n",
contxt, value);
#endif
}
return result;
}
void *
SPHContextAlloc (SPHContext_t heap, block_size_t alloc_size)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
void *mem = NULL;
if (SOMSASCheckBlockSigAndType (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(heap, SasUserLock__WRITE);
mem = SPHContextAllocNoLock(heap, alloc_size);
SASUnlock(heap);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextAlloc(%p, %zu) type check failed\n",
heap, alloc_size);
#endif
}
return mem;
}
int
SPHContextFree (SPHContext_t heap,
void* free_block,
block_size_t alloc_size)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
int rc;
if ( SOMSASCheckBlockSigAndType (headerBlock, SAS_SIMPLEHEAP_TYPE) )
{
SASLock(heap, SasUserLock__WRITE);
rc = SPHContextFreeNoLock(heap, free_block, alloc_size);
SASUnlock(heap);
} else {
rc = -1;
#ifdef __SASDebugPrint__
sas_printf("SPHContextFree(%p, ...) does not match type/subtype\n",
heap);
#endif
}
return rc;
}
void* SPHContextNearAlloc(void *nearObj, long allocSize)
{
return SASNearAlloc (nearObj, allocSize);
}
void SPHContextNearDealloc(void *memAddr, long allocSize)
{
SASNearDealloc (memAddr, allocSize);
}
block_size_t
SPHContextFreeSpaceNoLock (SPHContext_t heap)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
block_size_t heapFree = 0;
if ( SOMSASCheckBlockSigAndType (headerBlock, SAS_SIMPLEHEAP_TYPE) )
{
if (headerBlock->blockFreeSpace != NULL)
heapFree = freeNode_freeSpaceTotal(headerBlock->blockFreeSpace);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextFreeSpace(%p) does not match type/subtype\n",
heap);
#endif
}
return heapFree;
}
block_size_t
SPHContextFreeSpace (SPHContext_t heap)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
block_size_t heapFree = 0;
if ( SOMSASCheckBlockSigAndType (headerBlock, SAS_SIMPLEHEAP_TYPE) )
{
SASLock(heap, SasUserLock__READ);
heapFree = SPHContextFreeSpaceNoLock(heap);
SASUnlock(heap);
#ifdef __SASDebugPrint__
} else {
sas_printf("SPHContextFreeSpace(%p) does not match type/subtype\n",
heap);
#endif
}
return heapFree;
}
int
SPHContextDestroyNoLock (SPHContext_t heap)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
block_size_t heapSize;
int rc;
if ( SOMSASCheckBlockSigAndTypeAndSubtype (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SPHContextHeader *header = (SPHContextHeader*) headerBlock;
if (header->name)
SASStringBTreeDestroy(header->name);
if (header->objID)
SASIndexDestroy(header->objID);
heapSize = headerBlock->blockSize;
SASBlockDealloc (heap, heapSize);
rc = 0;
} else {
#ifdef __SASDebugPrint__
sas_printf("SPHContextDestroy(%p) does not match type/subtype\n",
heap);
#endif
rc = -1;
}
return rc;
}
int
SPHContextDestroy (SPHContext_t heap)
{
SASBlockHeader *headerBlock = (SASBlockHeader*)heap;
int rc;
if ( SOMSASCheckBlockSigAndTypeAndSubtype (headerBlock,
SAS_RUNTIME_CONTEXT) )
{
SASLock(heap, SasUserLock__WRITE);
rc = SPHContextDestroyNoLock(heap);
SASUnlock(heap);
} else {
#ifdef __SASDebugPrint__
sas_printf("SPHContextDestroy(%p) does not match type/subtype\n",
heap);
#endif
rc = -1;
}
return rc;
}
SPHContext_t
SPHSetupProjectContext(char *project_name)
{
SPHContext_t result = NULL;
SPHContext_t rootcntx;
void *rootlock = (void*)getfastMemLow();
int rc;
/* Can't use SASSeize here as this could cause deadlock when we try
* to allocate blocks for new project contexts. So we use SASLock
* on memLow.
* */
SASLock(rootlock, SasUserLock__WRITE);
rootcntx = (SPHContext_t)getSASFinder();
if (!rootcntx)
{
rootcntx = SPHContextCreate(64 * 1024);
setSASFinder(rootcntx);
}
result = SPHContextFindByName(rootcntx, project_name);
if (result)
{
currentContext = result;
} else {
result = SPHContextCreate(1024 * 1024);
if (result)
{
rc = SPHContextAddName(rootcntx, project_name, result);
if (rc)
{
currentContext = result;
} else {
/* Root context may be full, so need to cleanup. */
SPHContextDestroy(result);
currentContext = result = NULL;
}
} else {
/* Context Create may be out of file or region space. */
currentContext = NULL;
}
}
SASUnlock(rootlock);
return result;
}
SPHContext_t
SPHSetupAltProjectContext(char *project_name)
{
SPHContext_t result = NULL;
SPHContext_t rootcntx;
void *rootlock = (void*)getfastMemLow();
int rc;
/* Can't use SASSeize here as this could cause deadlock when we try
* to allocate blocks for new project contexts. So we use SASLock
* on memLow.
* */
SASLock(rootlock, SasUserLock__WRITE);
rootcntx = (SPHContext_t)getSASFinder();
if (!rootcntx)
{
rootcntx = SPHContextCreate(64 * 1024);
setSASFinder(rootcntx);
}
result = SPHContextFindByName(rootcntx, project_name);
if (result)
{
} else {
result = SPHContextCreate(1024 * 1024);
if (result)
{
rc = SPHContextAddName(rootcntx, project_name, result);
if (!rc)
{
/* Root context may be full, so need to cleanup. */
SPHContextDestroy(result);
result = NULL;
}
}
}
SASUnlock(rootlock);
return result;
}
SPHContext_t
SPHRemoveProjectContext(char *project_name)
{
SPHContext_t result = NULL;
SPHContext_t rootcntx;
void *rootlock = (void*)getfastMemLow();
int rc;
/* Can't use SASSeize here as this could cause deadlock when we try
* to allocate blocks for new project contexts. So we use SASLock
* on memLow.
* */
SASLock(rootlock, SasUserLock__WRITE);
rootcntx = (SPHContext_t)getSASFinder();
if (rootcntx)
{
result = SPHContextFindByName(rootcntx, project_name);
if (result)
{
rc = SPHContextRemoveByName(rootcntx, project_name);
if (!rc)
{
if (result == currentContext)
currentContext = NULL;
} else {
/* remove failed */
result = NULL;
}
}
}
SASUnlock(rootlock);
return result;
}
int
SPHDestroyProjectContext(char *project_name)
{
SPHContext_t projcntx;
SPHContext_t rootcntx;
void *rootlock = (void*)getfastMemLow();
int rc, result;
/* Can't use SASSeize here as this could cause deadlock when we try
* to allocate blocks for new project contexts. So we use SASLock
* on memLow.
* */
SASLock(rootlock, SasUserLock__WRITE);
result = 1;
rootcntx = (SPHContext_t)getSASFinder();
if (rootcntx)
{
projcntx = SPHContextFindByName(rootcntx, project_name);
if (projcntx)
{
result = rc = SPHContextRemoveByName(rootcntx, project_name);
if (!rc)
{
result = SPHContextDestroy(projcntx);
if (projcntx == currentContext)
currentContext = NULL;
}
}
}
SASUnlock(rootlock);
return result;
}
SPHContext_t
getProjectContextByName(char *project_name)
{
SPHContext_t result = NULL;
SPHContext_t rootcntx;
rootcntx = (SPHContext_t)getSASFinder();
if (rootcntx)
{
result = SPHContextFindByName(rootcntx, project_name);
}
return result;
}
SPHContext_t
getCurrentProjectContext()
{
return currentContext;
}
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