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/*
* Copyright (c) 2010-2014 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 __SASDebugPrint__ 1
#define sas_printf printf
//#include "sasio.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include "sasalloc.h"
#include "freenode.h"
#ifdef __SASDebugPrint__
#include "sasio.h"
#endif
#include "sasanchr.h"
#include "sasatom.h"
#include "sassim.h"
#include "saslock.h"
#include "sphlflogger.h"
#include "sphthread.h"
//#undef __SASDebugPrint__
typedef struct SASLFLoggerHeader
{
SASBlockHeader blockHeader;
longPtr_t next_free;
longPtr_t start_log_buf;
longPtr_t end_log_buf;
longPtr_t align_mask;
#ifdef __LP64__
unsigned int options;
unsigned short default_entry_stride;
unsigned short dummy4;
void *dummy5;
#else
unsigned int options;
unsigned short default_entry_stride;
unsigned short dummy5;
#endif
void *dummy6;
freeNode *headerFreeSpace;
} SASLFLoggerHeader;
#ifdef __LP64__
#define HEAP_OFFSET 128
#define DEFAULT_PAGE 256
#else
#define HEAP_OFFSET 64
#define DEFAULT_PAGE 256
#endif
#define DEFAULT_ALIGN_MASK (~(sizeof(void*) + sizeof(void*) - 1))
#define DEFAULT_ALLOC_UNIT (sizeof(void*) + sizeof(void*))
#define NODEFAULT_ENTRY_STRIDE (0)
#define NODEFAULT_LOG_OPTIONS (0)
SPHLFLogger_t
SPHLFLoggerInitInternal (void *buf_seg, sas_type_t sasType,
block_size_t buf_size,
unsigned short stride, unsigned int options)
{
SASLFLoggerHeader *heapBlock = (SASLFLoggerHeader *) buf_seg;
char *stackStart = NULL;
char *stackEnd = NULL;
longPtr_t remaining;
longPtr_t round = (longPtr_t) DEFAULT_ALLOC_UNIT;
if (heapBlock)
{
initSOMSASBlock ((SASBlockHeader *) heapBlock, sasType, buf_size, NULL);
}
#ifdef __SASDebugPrint__
sas_printf
("SPHLFLoggerInitInternal(%p, %ld, %d) sizeof(header)=%zu round=%ld\n",
buf_seg, buf_size, stride, sizeof (SASLFLoggerHeader), round);
#endif
stackStart = (char *) heapBlock + DEFAULT_PAGE;
stackEnd = (char *) heapBlock + buf_size;
heapBlock->next_free = (longPtr_t) stackStart;
heapBlock->start_log_buf = (longPtr_t) stackStart;
heapBlock->end_log_buf = (longPtr_t) stackEnd;
heapBlock->align_mask = (longPtr_t) DEFAULT_ALIGN_MASK;
heapBlock->options = options;
heapBlock->default_entry_stride = (stride + round) & ~round;
remaining = DEFAULT_PAGE - sizeof (SASLFLoggerHeader);
heapBlock->headerFreeSpace = (freeNode *) & heapBlock[1];
freeNode_init (heapBlock->headerFreeSpace, remaining);
heapBlock->blockHeader.baseBlock = (SASBlockHeader *) heapBlock;
heapBlock->blockHeader.nextBlock = (SASBlockHeader *) heapBlock;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerInitInternal() mask=%lx options=%x stride=%d\n",
heapBlock->align_mask,
heapBlock->options = options, heapBlock->default_entry_stride);
#endif
return (SPHLFLogger_t) heapBlock;
}
SPHLFLogger_t
SPHLFLoggerInit (void *buf_seg, block_size_t buf_size)
{
return SPHLFLoggerInitInternal (buf_seg,
SAS_RUNTIME_LOCKFREELOGGER,
buf_size,
NODEFAULT_ENTRY_STRIDE,
NODEFAULT_LOG_OPTIONS);
}
SPHLFLogger_t
SPHLFLoggerInitWithStride (void *buf_seg, block_size_t buf_size,
unsigned short entry_stride, unsigned int options)
{
return SPHLFLoggerInitInternal (buf_seg,
SAS_RUNTIME_LOCKFREELOGGER,
buf_size, entry_stride, options);
}
SPHLFLogger_t
SPHLFLoggerCreate (block_size_t buf_size)
{
SASBlockHeader *heapBlock = NULL;
heapBlock = (SASBlockHeader *) SASBlockAlloc ((long) buf_size);
if (heapBlock)
{
return SPHLFLoggerInit (heapBlock, buf_size);
}
else
return NULL;
}
SPHLFLogger_t
SPHLFCircularLoggerCreate (block_size_t buf_size, unsigned short stride)
{
SASBlockHeader *heapBlock = NULL;
heapBlock = (SASBlockHeader *) SASBlockAlloc ((long) buf_size);
if (heapBlock)
{
return SPHLFLoggerInitWithStride (heapBlock, buf_size,
stride, SPHLFLOGGER_CIRCULAR);
}
else
return NULL;
}
void *
SPHLFLoggerAllocRaw (SPHLFLogger_t log, block_size_t alloc_size)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
longPtr_t round;
longPtr_t alloc_round = 0;
longPtr_t log_entry = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
round = ~headerBlock->align_mask;
alloc_round = (alloc_size + round) & ~round;
log_entry = __sync_fetch_and_add (&headerBlock->next_free, alloc_round);
if (log_entry + alloc_round > headerBlock->end_log_buf)
{
log_entry = 0;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerAllocRaw(%p, %ld) alloc failed\n",
log, alloc_size);
#endif
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf ("SPHLFLoggerAllocRaw(%p, %ld) type check failed\n",
log, alloc_size);
#endif
}
return (void *) log_entry;
}
//#define __SASDebugPrint__ (1)
SPHLFLoggerHandle_t *
SPHLFLoggerAllocTimeStamped (SPHLFLogger_t log,
int catcode, int subcode,
block_size_t alloc_size,
SPHLFLoggerHandle_t * handleorg)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
SPHLFLoggerHandle_t *handlespace = handleorg;
longPtr_t round;
longPtr_t alloc_round;
longPtr_t log_entry;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
round = ~headerBlock->align_mask;
alloc_round = (alloc_size + sizeof (SPHLFLogHeader_t) + round) & ~round;
#ifdef __powerpc__
log_entry =
(longPtr_t) sas_fetch_and_add_ptr ((void **) &headerBlock->next_free,
alloc_round);
#else
log_entry = __sync_fetch_and_add (&headerBlock->next_free, alloc_round);
#endif
if (log_entry + alloc_round <= headerBlock->end_log_buf)
{
SPHLFLogHeader_t *entryPtr = (SPHLFLogHeader_t *) log_entry;
sphLogEntry_t entrytemp;
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH0)
__builtin_prefetch ((void *) (log_entry));
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH1)
__builtin_prefetch ((void *) (log_entry + 128));
entrytemp.detail.valid = 0;
entrytemp.detail.timestamped = 1;
entrytemp.detail.__reserved = 0;
entrytemp.detail.category = catcode;
entrytemp.detail.subcat = subcode;
entrytemp.detail.len = (alloc_round / DEFAULT_ALLOC_UNIT);
entryPtr->entryID.idUnit = entrytemp.idUnit;
entryPtr->timeStamp = sphgettimer ();
entryPtr->PID = sphFastGetPID ();
entryPtr->TID = sphFastGetTID ();
handlespace->entry = entryPtr;
handlespace->next =
(char *) (log_entry + sizeof (SPHLFLogHeader_t));
handlespace->total_size = alloc_round;
handlespace->remaining = alloc_round - sizeof (SPHLFLogHeader_t);
}
else
{
handlespace = NULL;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerAllocTimeStamped(%p, %ld) alloc failed\n",
log, alloc_size);
#endif
sas_write_barrier ();
if (headerBlock->options & SPHLFLOGGER_CIRCULAR)
{
bool done = 0;
longPtr_t old;
/* verify that this thread is the first or primary
thread to find the wrap condition. */
if ((log_entry <= headerBlock->end_log_buf)
&& (log_entry + alloc_round >= headerBlock->end_log_buf))
{
do
{
old = headerBlock->next_free;
done =
__sync_bool_compare_and_swap (&headerBlock->next_free,
old,
headerBlock->
start_log_buf);
}
while (!done);
sas_fetch_and_or (&headerBlock->options,
SPHLFLOGGER_CIRCULAR_WRAPED);
#ifdef __SASDebugPrint__
sas_printf
("SPHLFLoggerAllocTimeStamped(%p, %ld) wrapping\n", log,
alloc_size);
sas_printf
(" lflog@%p, old=%ld, ->next_free=%ld, ->start_log_buf=%ld, \n",
headerBlock, old, headerBlock->next_free,
headerBlock->start_log_buf);
#endif
handlespace = SPHLFLoggerAllocTimeStamped (log, catcode,
subcode,
alloc_size,
handleorg);
}
else
{
/* secondary threads should just retry until the
buffer wraps. */
for (old = headerBlock->next_free;
(old + alloc_round) >= log_entry;
old = headerBlock->next_free)
sas_read_barrier ();
do
{
handlespace = SPHLFLoggerAllocTimeStamped (log, catcode,
subcode,
alloc_size,
handleorg);
}
while (!handlespace);
}
}
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf ("SPHLFLoggerAllocTimeStamped(%p, %ld) type check failed\n",
log, alloc_size);
#endif
}
return handlespace;
}
//#undef __SASDebugPrint__
//#define __SASDebugPrint__ (1)
SPHLFLoggerHandle_t *
SPHLFLoggerAllocStrideTimeStamped (SPHLFLogger_t log,
int catcode, int subcode,
SPHLFLoggerHandle_t * handleorg)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
SPHLFLoggerHandle_t *handlespace = handleorg;
longPtr_t alloc_round = 0;
longPtr_t log_entry;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{ /* for Strided alloc increment is pre rounded */
alloc_round = headerBlock->default_entry_stride;
#ifdef __powerpc__
log_entry =
(longPtr_t) sas_fetch_and_add_ptr ((void **) &headerBlock->next_free,
alloc_round);
#else
log_entry = __sync_fetch_and_add (&headerBlock->next_free, alloc_round);
#endif
if (log_entry + alloc_round <= headerBlock->end_log_buf)
{
SPHLFLogHeader_t *entryPtr = (SPHLFLogHeader_t *) log_entry;
sphLogEntry_t entrytemp;
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH0)
__builtin_prefetch ((void *) (log_entry));
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH1)
__builtin_prefetch ((void *) (log_entry + 128));
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerAllocStrideTimeStamped() alloc %ld\n",
alloc_round);
#endif
entrytemp.detail.valid = 0;
entrytemp.detail.timestamped = 1;
entrytemp.detail.__reserved = 0;
entrytemp.detail.category = catcode;
entrytemp.detail.subcat = subcode;
entrytemp.detail.len = (alloc_round / DEFAULT_ALLOC_UNIT);
entryPtr->entryID.idUnit = entrytemp.idUnit;
entryPtr->timeStamp = sphgettimer ();
entryPtr->PID = sphFastGetPID ();
entryPtr->TID = sphFastGetTID ();
handlespace->entry = entryPtr;
handlespace->next =
(char *) (log_entry + sizeof (SPHLFLogHeader_t));
handlespace->total_size = alloc_round;
handlespace->remaining = alloc_round - sizeof (SPHLFLogHeader_t);
}
else
{
handlespace = NULL;
#ifdef __SASDebugPrint__
sas_printf
("SPHLFLoggerAllocStrideTimeStamped(%p, %ld) alloc failed opt=%x\n",
log, alloc_round, headerBlock->options);
#endif
sas_write_barrier ();
if (headerBlock->options & SPHLFLOGGER_CIRCULAR)
{
bool done = 0;
longPtr_t old;
/* verify that this thread is the first or primary
thread to find the wrap condition. */
if ((log_entry <= headerBlock->end_log_buf)
&& (log_entry + alloc_round >= headerBlock->end_log_buf))
{
do
{
old = headerBlock->next_free;
done =
__sync_bool_compare_and_swap (&headerBlock->next_free,
old,
headerBlock->
start_log_buf);
}
while (!done);
sas_fetch_and_or (&headerBlock->options,
SPHLFLOGGER_CIRCULAR_WRAPED);
#ifdef __SASDebugPrint__
sas_printf
("SPHLFLoggerAllocStrideTimeStamped(%p, ...) wrapping\n",
log);
sas_printf
(" lflog@%p, old=%ld, ->next_free=%ld, ->start_log_buf=%ld, \n",
headerBlock, old, headerBlock->next_free,
headerBlock->start_log_buf);
#endif
handlespace =
SPHLFLoggerAllocStrideTimeStamped (log, catcode, subcode,
handleorg);
}
else
{
/* secondary threads should just retry until the
buffer wraps. */
for (old = headerBlock->next_free;
(old + alloc_round) >= log_entry;
old = headerBlock->next_free)
sas_read_barrier ();
do
{
handlespace =
SPHLFLoggerAllocStrideTimeStamped (log, catcode,
subcode,
handleorg);
}
while (!handlespace);
}
}
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf
("SPHLFLoggerAllocStrideTimeStamped(%p, %ld) type check failed\n",
log, alloc_round);
#endif
}
return handlespace;
}
//#undef __SASDebugPrint__
SPHLFLoggerHandle_t *
SPHLFLoggerAllocTimeStampedNoLock (SPHLFLogger_t log,
int catcode, int subcode,
block_size_t alloc_size,
SPHLFLoggerHandle_t * handleorg)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
SPHLFLoggerHandle_t *handlespace = handleorg;
longPtr_t round;
longPtr_t alloc_round;
longPtr_t log_entry;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
round = ~headerBlock->align_mask;
alloc_round = (alloc_size + sizeof (SPHLFLogHeader_t) + round) & ~round;
// log_entry = __sync_fetch_and_add(&headerBlock->next_free, alloc_round);
log_entry = headerBlock->next_free;
headerBlock->next_free += alloc_round;
if (log_entry + alloc_round <= headerBlock->end_log_buf)
{
SPHLFLogHeader_t *entryPtr = (SPHLFLogHeader_t *) log_entry;
sphLogEntry_t entrytemp;
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH0)
__builtin_prefetch ((void *) (log_entry));
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH1)
__builtin_prefetch ((void *) (log_entry + 128));
entrytemp.detail.valid = 0;
entrytemp.detail.timestamped = 1;
entrytemp.detail.__reserved = 0;
entrytemp.detail.category = catcode;
entrytemp.detail.subcat = subcode;
entrytemp.detail.len = (alloc_round / DEFAULT_ALLOC_UNIT);
entryPtr->entryID.idUnit = entrytemp.idUnit;
entryPtr->timeStamp = sphgettimer ();
entryPtr->PID = sphFastGetPID ();
entryPtr->TID = sphFastGetTID ();
handlespace->entry = entryPtr;
handlespace->next =
(char *) (log_entry + sizeof (SPHLFLogHeader_t));
handlespace->total_size = alloc_round;
handlespace->remaining = alloc_round - sizeof (SPHLFLogHeader_t);
}
else
{
handlespace = NULL;
#ifdef __SASDebugPrint__
sas_printf
("SPHLFLoggerAllocTimeStampedNoLock(%p, %ld) alloc failed\n", log,
alloc_size);
#endif
// atomic_write_barrier();
if (headerBlock->options & SPHLFLOGGER_CIRCULAR)
{
headerBlock->next_free = headerBlock->start_log_buf;
headerBlock->options |= SPHLFLOGGER_CIRCULAR_WRAPED;
handlespace = SPHLFLoggerAllocTimeStampedNoLock (log, catcode,
subcode,
alloc_size,
handleorg);
}
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf
("SPHLFLoggerAllocTimeStampedNoLock(%p, %ld) type check failed\n",
log, alloc_size);
#endif
}
return handlespace;
}
SPHLFLoggerHandle_t *
SPHLFLoggerAllocStrideTimeStampedNoLock (SPHLFLogger_t log,
int catcode, int subcode,
SPHLFLoggerHandle_t * handleorg)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
SPHLFLoggerHandle_t *handlespace = handleorg;
longPtr_t alloc_round = 0;
longPtr_t log_entry;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{ /* for Strided alloc increment is pre rounded */
alloc_round = headerBlock->default_entry_stride;
// log_entry = __sync_fetch_and_add(&headerBlock->next_free, alloc_round);
log_entry = headerBlock->next_free;
headerBlock->next_free += alloc_round;
if (log_entry + alloc_round <= headerBlock->end_log_buf)
{
SPHLFLogHeader_t *entryPtr = (SPHLFLogHeader_t *) log_entry;
sphLogEntry_t entrytemp;
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH0)
__builtin_prefetch ((void *) (log_entry));
if (headerBlock->options & SPHLFLOGGER_CACHE_PREFETCH1)
__builtin_prefetch ((void *) (log_entry + 128));
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerAllocStrideTimeStamped() alloc %ld\n",
alloc_round);
#endif
entrytemp.detail.valid = 0;
entrytemp.detail.timestamped = 1;
entrytemp.detail.__reserved = 0;
entrytemp.detail.category = catcode;
entrytemp.detail.subcat = subcode;
entrytemp.detail.len = (alloc_round / DEFAULT_ALLOC_UNIT);
entryPtr->entryID.idUnit = entrytemp.idUnit;
entryPtr->timeStamp = sphgettimer ();
entryPtr->PID = sphFastGetPID ();
entryPtr->TID = sphFastGetTID ();
handlespace->entry = entryPtr;
handlespace->next =
(char *) (log_entry + sizeof (SPHLFLogHeader_t));
handlespace->total_size = alloc_round;
handlespace->remaining = alloc_round - sizeof (SPHLFLogHeader_t);
}
else
{
handlespace = NULL;
#ifdef __SASDebugPrint__
sas_printf
("SPHLFLoggerAllocStrideTimeStampedNoLock(%p, %ld) alloc failed opt=%x\n",
log, alloc_round, headerBlock->options);
#endif
// atomic_write_barrier();
if (headerBlock->options & SPHLFLOGGER_CIRCULAR)
{
headerBlock->next_free = headerBlock->start_log_buf;
headerBlock->options |= SPHLFLOGGER_CIRCULAR_WRAPED;
handlespace = SPHLFLoggerAllocStrideTimeStampedNoLock (log,
catcode,
subcode,
handleorg);
}
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf
("SPHLFLoggerAllocStrideTimeStampedNoLock(%p, %ld) type check failed\n",
log, alloc_round);
#endif
}
return handlespace;
}
int
SPHLFLoggerEntryComplete (SPHLFLoggerHandle_t * handlespace)
{
int rc = 0;
SPHLFLogHeader_t *entryPtr = handlespace->entry;
sphLogEntry_t entrytemp;
sas_read_barrier ();
entrytemp.idUnit = entryPtr->entryID.idUnit;
entrytemp.detail.valid = 1;
entryPtr->entryID.idUnit = entrytemp.idUnit;
return rc;
}
int
SPHLFLoggerEntryIsComplete (SPHLFLoggerHandle_t * handlespace)
{
SPHLFLogHeader_t *entryPtr = handlespace->entry;
return (entryPtr->entryID.detail.valid == 1);
}
int
SPHLFLoggerEntryIsTimestamped (SPHLFLoggerHandle_t * handlespace)
{
SPHLFLogHeader_t *entryPtr = handlespace->entry;
return ((entryPtr->entryID.detail.valid == 1)
&& (entryPtr->entryID.detail.timestamped == 1));
}
//#define __SASDebugPrint__ 1
SPHLFLoggerHandle_t *
SPHLFLoggerIteratorNext (SPHLFLogIterator_t * iterator,
SPHLFLoggerHandle_t * handleorg)
{
SPHLFLogger_t log = iterator->logger;
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
SPHLFLoggerHandle_t *handle = NULL;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerIteratorNext(%p, %p) entry\n", iterator, handleorg);
sas_printf (" log=%p headerBlock=%p\n", log, headerBlock);
#endif
/* Verify we are pointing to a valid logger before we poke around
its insides. */
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
unsigned int log_options = iterator->options;
longPtr_t lPtr = iterator->current;
longPtr_t eLen, prev;
SPHLFLogHeader_t *entryPtr;
entryPtr = (SPHLFLogHeader_t *) lPtr;
#ifdef __SASDebugPrint__
sas_printf (" lPtr=%lx entryPtr=%p end=%lx \n",
lPtr, entryPtr, iterator->end_log);
#endif
if ((lPtr < iterator->end_log) && (entryPtr->entryID.detail.valid))
{
eLen = (entryPtr->entryID.detail.len * DEFAULT_ALLOC_UNIT);
handleorg->entry = entryPtr;
handleorg->total_size = eLen;
if (entryPtr->entryID.detail.timestamped)
{
handleorg->next = (char *) (lPtr + sizeof (SPHLFLogHeader_t));
handleorg->remaining = eLen - sizeof (SPHLFLogHeader_t);
}
else
{
handleorg->next = (char *) (lPtr + sizeof (sphLogEntry_t));
handleorg->remaining = eLen - sizeof (sphLogEntry_t);
}
prev = lPtr;
lPtr += eLen;
#ifdef __SASDebugPrint__
sas_printf (" lPtr=%lx eLen=%ld valid=%d\n", lPtr, eLen,
entryPtr->entryID.detail.valid);
#endif
if ((log_options & SPHLFLOGGER_CIRCULAR)
&& (log_options & SPHLFLOGGER_CIRCULAR_WRAPED))
{
if (lPtr >= iterator->end_log)
{
iterator->current = iterator->start_log;
handle = handleorg;
}
else if ((prev != iterator->free)
|| ((log_options & SPHLFLOGGER_CIRCULAR_NOTFIRST)
!= SPHLFLOGGER_CIRCULAR_NOTFIRST))
{
iterator->current = lPtr;
handle = handleorg;
}
}
else
{
if (lPtr <= iterator->free)
{
iterator->current = lPtr;
handle = handleorg;
}
}
if (handle)
iterator->options |= SPHLFLOGGER_CIRCULAR_NOTFIRST;
#ifdef __SASDebugPrint__
sas_printf (" handle=%p entry%p current=%lx\n",
handle, handleorg->entry, iterator->current);
#endif
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf ("SPHLFLoggerIteratorNext(%p, %p) type check failed\n",
iterator, handleorg);
#endif
}
return handle;
}
SPHLFLogIterator_t *
SPHLFLoggerCreateIterator (SPHLFLogger_t log,
SPHLFLogIterator_t * Iterator_space)
{
SPHLFLogIterator_t *iter = NULL;
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
unsigned int log_options = headerBlock->options;
iter = Iterator_space;
iter->logger = log;
iter->free = headerBlock->next_free;
iter->start_log = headerBlock->start_log_buf;
iter->end_log = headerBlock->end_log_buf;
if ((log_options & SPHLFLOGGER_CIRCULAR)
&& (log_options & SPHLFLOGGER_CIRCULAR_WRAPED))
{
iter->current = headerBlock->next_free;
}
else
{
iter->current = headerBlock->start_log_buf;
}
iter->options = log_options;
#ifdef __SASDebugPrint__
}
else
{
sas_printf ("SPHLFLoggerCreateIterator(%p, %p) type check failed\n",
log, Iterator_space);
#endif
}
return iter;
}
//#undef __SASDebugPrint__
int
SPHLFLoggerWrapped (SPHLFLogger_t log)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
int rc = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
sas_read_barrier ();
if ((headerBlock->options & SPHLFLOGGER_CIRCULAR)
&& (headerBlock->options & SPHLFLOGGER_CIRCULAR_WRAPED))
{
rc = 1;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerWrapped(%p) next=%lx, end=%lx\n", log,
headerBlock->next_free, headerBlock->end_log_buf);
#endif
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf ("SPHLFLoggerWrapped(%p) type check failed\n", log);
#endif
}
return rc;
}
int
SPHLFLoggerEmpty (SPHLFLogger_t log)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
int rc = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
sas_read_barrier ();
if (headerBlock->next_free == headerBlock->start_log_buf)
{
rc = 1;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerEmpty(%p) next=%lx, end=%lx\n", log,
headerBlock->next_free, headerBlock->end_log_buf);
#endif
}
#ifdef __SASDebugPrint__
}
else
{
sas_printf ("SPHLFLoggerEmpty(%p) type check failed\n", log);
#endif
}
return rc;
}
block_size_t
SPHLFLoggerFreeSpace (SPHLFLogger_t log)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
block_size_t freespace = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
sas_read_barrier ();
if (headerBlock->next_free < headerBlock->end_log_buf)
{
freespace = headerBlock->end_log_buf - headerBlock->next_free;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerFreeSpace(%p) next=%lx, end=%lx\n", log,
headerBlock->next_free, headerBlock->end_log_buf);
#endif
}
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerFreeSpace(%p) type check failed\n", log);
#endif
}
return freespace;
}
int
SPHLFLoggerFull (SPHLFLogger_t log)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
int rc = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
sas_read_barrier ();
if (headerBlock->next_free >= headerBlock->end_log_buf)
{
rc = 1;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerEmpty(%p) next=%lx, end=%lx\n", log,
headerBlock->next_free, headerBlock->end_log_buf);
#endif
}
}
else
{
rc = 1;
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerFull(%p) type check failed\n", log);
#endif
}
return rc;
}
int
SPHLFLoggerResetIfFullSync (SPHLFLogger_t log)
{
SASBlockHeader *headerBlock = (SASBlockHeader *) log;
SASLFLoggerHeader *logheader = (SASLFLoggerHeader *) log;
longPtr_t next;
int rc = 0;
if (SOMSASCheckBlockSigAndTypeAndSubtype (headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
bool done = 0;
do
{
sas_read_barrier ();
next = logheader->next_free;
if ((next + 128) >= logheader->end_log_buf)
{
done = __sync_bool_compare_and_swap (&logheader->next_free,
next,
logheader->start_log_buf);
if (done)
logheader->options &= SPHLFLOGGER_CIRCULAR_RESETMASK;
}
else
{
done = 1;
rc = 1;
}
}
while (!done);
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerResetAsync(%p) does not match type/subtype\n",
log);
#endif
rc = -1;
}
return rc;
}
int
SPHLFLoggerResetAsync (SPHLFLogger_t log)
{
SASBlockHeader *headerBlock = (SASBlockHeader *) log;
SASLFLoggerHeader *logheader = (SASLFLoggerHeader *) log;
int rc = 0;
if (SOMSASCheckBlockSigAndTypeAndSubtype (headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
logheader->next_free = logheader->start_log_buf;
logheader->options &= SPHLFLOGGER_CIRCULAR_RESETMASK;
rc = 0;
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerResetAsync(%p) does not match type/subtype\n",
log);
#endif
rc = -1;
}
return rc;
}
int
SPHLFLoggerPrefetch (SPHLFLogger_t log)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
block_size_t logsize, pagesz, i;
int rc = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
logsize = headerBlock->blockHeader.blockSize;
pagesz = getpagesize ();
volatile char *touchptr = (char *) log;
char touch = 0;
for (i = pagesz; i < logsize; i += pagesz)
{
touchptr += pagesz;
touch += *touchptr;
#if 0
printf ("SPHLFLoggerPrefetch@%p\n", touchptr);
#endif
}
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerPrefetch(%p) type check failed\n", log);
#endif
rc = 1;
}
return rc;
}
int
SPHLFLoggerSetCachePrefetch (SPHLFLogger_t log, int prefetch)
{
SASLFLoggerHeader *headerBlock = (SASLFLoggerHeader *) log;
unsigned int prefetch_opt = 0;
unsigned int temp = (SPHLFLOGGER_CACHE_PREFETCH0
| SPHLFLOGGER_CACHE_PREFETCH1);
int rc = 0;
if (SOMSASCheckBlockSigAndType ((SASBlockHeader *) headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
if (prefetch > 1)
{
prefetch_opt = SPHLFLOGGER_CACHE_PREFETCH1;
if (prefetch > 2)
prefetch_opt |= SPHLFLOGGER_CACHE_PREFETCH0;
}
else
{
if (prefetch == 1)
prefetch_opt = SPHLFLOGGER_CACHE_PREFETCH0;
}
temp = sas_fetch_and_and (&headerBlock->options, temp);
temp = sas_fetch_and_or (&headerBlock->options, prefetch_opt);
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerPrefetch(%p) type check failed\n", log);
#endif
rc = 1;
}
return rc;
}
int
SPHLFLoggerDestroyNoLock (SPHLFLogger_t log)
{
SASBlockHeader *headerBlock = (SASBlockHeader *) log;
block_size_t heapSize;
int rc;
if (SOMSASCheckBlockSigAndTypeAndSubtype (headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
heapSize = headerBlock->blockSize;
SASBlockDealloc (log, heapSize);
rc = 0;
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerDestroy(%p) does not match type/subtype\n",
log);
#endif
rc = -1;
}
return rc;
}
int
SPHLFLoggerDestroy (SPHLFLogger_t log)
{
SASBlockHeader *headerBlock = (SASBlockHeader *) log;
int rc;
if (SOMSASCheckBlockSigAndTypeAndSubtype (headerBlock,
SAS_RUNTIME_LOCKFREELOGGER))
{
SASLock (log, SasUserLock__WRITE);
rc = SPHLFLoggerDestroyNoLock (log);
SASUnlock (log);
}
else
{
#ifdef __SASDebugPrint__
sas_printf ("SPHLFLoggerDestroy(%p) does not match type/subtype\n",
log);
#endif
rc = -1;
}
return rc;
}
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