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#include "nestypes.h"
#include "s_logtbl.h"
#if STATIC_TABLES
static void LogTableRelease(void *ctx)
{
}
static KMIF_LOGTABLE log_static_tables = {
&log_static_tables;
LogTableRelease,
#include "s_logt.h"
};
KMIF_LOGTABLE *LogTableAddRef(void)
{
log_static_tables.release = LogTableRelease;
return &log_static_tables;
}
#else
#include <math.h>
static volatile Uint32 log_tables_mutex = 0;
static Uint32 log_tables_refcount = 0;
static KMIF_LOGTABLE *log_tables = 0;
static void LogTableRelease(void *ctx)
{
++log_tables_mutex;
while (log_tables_mutex != 1)
{
XSLEEP(0);
}
log_tables_refcount--;
if (!log_tables_refcount)
{
XFREE(ctx);
log_tables = 0;
}
--log_tables_mutex;
}
static void LogTableCalc(KMIF_LOGTABLE *kmif_lt)
{
Uint32 i;
double a;
for (i = 0; i < (1 << LOG_BITS); i++)
{
a = (1 << LOG_LIN_BITS) / pow(2, i / (double)(1 << LOG_BITS));
kmif_lt->logtbl[i] = (Uint32)a;
}
kmif_lt->lineartbl[0] = LOG_LIN_BITS << LOG_BITS;
for (i = 1; i < (1 << LIN_BITS) + 1; i++)
{
Uint32 ua;
a = i << (LOG_LIN_BITS - LIN_BITS);
ua = (Uint32)((LOG_LIN_BITS - (log(a) / log(2))) * (1 << LOG_BITS));
kmif_lt->lineartbl[i] = ua << 1;
}
}
KMIF_LOGTABLE *LogTableAddRef(void)
{
++log_tables_mutex;
while (log_tables_mutex != 1)
{
XSLEEP(0);
}
if (!log_tables_refcount)
{
log_tables = (KMIF_LOGTABLE*) XMALLOC(sizeof(KMIF_LOGTABLE));
if (log_tables)
{
log_tables->ctx = log_tables;
log_tables->release = LogTableRelease;
LogTableCalc(log_tables);
}
}
if (log_tables) log_tables_refcount++;
--log_tables_mutex;
return log_tables;
}
#endif
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