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/*******************************************************************
* File: omTables.c
* Purpose: program which generates omTables.inc
* Author: obachman (Olaf Bachmann)
* Created: 11/99
*******************************************************************/
#ifndef MH_TABLES_C
#define MH_TABLES_C
#define _POSIX_SOURCE 1
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include "omConfig.h"
#include "omDerivedConfig.h"
#include "omStructs.h"
#include "omAllocPrivate.h"
/* Specify the minimal number of blocks which should go into a bin */
#if SIZEOF_SYSTEM_PAGE > 4096
#define MIN_BIN_BLOCKS 8
#define INCR_FACTOR 2
#else
#define MIN_BIN_BLOCKS 4
#define INCR_FACTOR 1
#endif
#define OM_MAX_BLOCK_SIZE ((SIZEOF_OM_BIN_PAGE / MIN_BIN_BLOCKS) & ~(SIZEOF_STRICT_ALIGNMENT - 1))
/* Specify sizes of static bins */
#ifdef OM_ALIGN_8
size_t om_BinSize [SIZEOF_OM_BIN_PAGE / MIN_BIN_BLOCKS] =
{ 8, 16, 24, 32,
40, 48, 56, 64, 72,
80, 96, 112, 128, 144,
160, 192, 224,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*9)) / 8)*8,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*6)) / 8)*8,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*4)) / 8)*8,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*2)) / 8)*8,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR)) / 8)*8,
OM_MAX_BLOCK_SIZE};
#else /* ! OM_ALIGN_8 */
size_t om_BinSize [SIZEOF_OM_BIN_PAGE / MIN_BIN_BLOCKS] =
{ 8, 12, 16, 20,
24, 28, 32,
40, 48, 56, 64,
80, 96, 112, 128,
160, 192, 224,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*9)) / SIZEOF_STRICT_ALIGNMENT)*SIZEOF_STRICT_ALIGNMENT,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*6)) / SIZEOF_STRICT_ALIGNMENT)*SIZEOF_STRICT_ALIGNMENT,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*4)) / SIZEOF_STRICT_ALIGNMENT)*SIZEOF_STRICT_ALIGNMENT,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR*2)) / SIZEOF_STRICT_ALIGNMENT)*SIZEOF_STRICT_ALIGNMENT,
((SIZEOF_OM_BIN_PAGE / (MIN_BIN_BLOCKS + INCR_FACTOR)) / SIZEOF_STRICT_ALIGNMENT)*SIZEOF_STRICT_ALIGNMENT,
OM_MAX_BLOCK_SIZE};
#endif /* OM_ALIGN_8 */
void OutputSize2Bin(size_t *binSize, size_t max_block_size, int track)
{
long i, j;
printf("omBin om_Size2%sBin[/*%ld*/] = {\n",
(track? "Track" : ""), (long)(max_block_size / SIZEOF_OM_ALIGNMENT));
i=0;
j=SIZEOF_OM_ALIGNMENT;
while (j < max_block_size)
{
printf("&om_Static%sBin[%ld], /* %ld */ \n", (track? "Track" : ""), i, j);
if (binSize[i] == j) i++;
j += SIZEOF_OM_ALIGNMENT;
}
printf("&om_Static%sBin[%ld] /* %ld */};\n\n", (track? "Track" : ""), i, j);
}
void OutputSize2AlignedBin(size_t *binSize, size_t max_block_size, int track)
{
long i, j;
if (OM_MAX_BLOCK_SIZE % 8 != 0)
{
fprintf(stderr, "OM_MAX_BLOCK_SIZE == %d not divisible by 8\n", OM_MAX_BLOCK_SIZE);fflush(stdout);
_exit(1);
}
printf("omBin om_Size2%sBin[/*%ld*/] = {\n",
(track ? "Track" : "Aligned"), (long)(max_block_size / SIZEOF_OM_ALIGNMENT));
i=0;
while (binSize[i] % SIZEOF_STRICT_ALIGNMENT != 0) i++;
j=SIZEOF_OM_ALIGNMENT;
while (j < max_block_size)
{
printf("&om_Static%sBin[%ld], /* %ld */ \n", (track ? "Track" : ""), i, j);
if (binSize[i] == j)
{
i++;
while (binSize[i] % SIZEOF_STRICT_ALIGNMENT != 0) i++;
}
j += SIZEOF_OM_ALIGNMENT;
}
printf("&om_Static%sBin[%ld] /* %ld */};\n\n", (track ? "Track" : ""), i, j);
}
void OutputStaticBin(size_t *binSize, int max_bin_index, int track)
{
long i;
printf("omBin_t om_Static%sBin[/*%d*/] = {\n", (track ? "Track" : ""), max_bin_index+1);
for (i=0; i< max_bin_index; i++)
{
printf("{om_ZeroPage, NULL, NULL, %ld, %ld, 0},\n",
(long)(binSize[i] / SIZEOF_LONG),
(long)(SIZEOF_OM_BIN_PAGE/binSize[i]));
}
printf("{om_ZeroPage, NULL, NULL, %ld, %ld, 0}\n};\n\n",
(long)(binSize[i] / SIZEOF_LONG),
(long)(SIZEOF_OM_BIN_PAGE/binSize[i]));
}
int GetMaxBlockThreshold()
{
int i;
for (i=SIZEOF_OM_ALIGNMENT; i < OM_MAX_BLOCK_SIZE; i += SIZEOF_OM_ALIGNMENT)
{
if ((SIZEOF_OM_BIN_PAGE/i) == SIZEOF_OM_BIN_PAGE/(i + SIZEOF_OM_ALIGNMENT))
return i;
}
/* should never get here */
printf("error");fflush(stdout);
_exit(1);
}
void CreateDenseBins()
{
size_t size, align_size = SIZEOF_OM_ALIGNMENT;
int i = 1;
#ifdef OM_ALIGNMENT_NEEDS_WORK
int n = GetMaxBlockThreshold();
#endif
size = align_size;
om_BinSize[0] = align_size;
i = 1;
while (size < OM_MAX_BLOCK_SIZE)
{
size += align_size;
#ifdef OM_ALIGNMENT_NEEDS_WORK
if (size >= n && align_size != SIZEOF_STRICT_ALIGNMENT)
{
align_size = SIZEOF_STRICT_ALIGNMENT;
size= OM_STRICT_ALIGN_SIZE(size);
}
#endif
om_BinSize[i] = size;
if ((SIZEOF_OM_BIN_PAGE / (size + align_size)) < (SIZEOF_OM_BIN_PAGE /size))
{
i++;
}
}
}
int main(int argc, char* argv[])
{
int max_bin_index = 0;
/* determine max_bin_index */
#ifdef OM_HAVE_DENSE_BIN_DISTRIBUTION
CreateDenseBins();
#endif
for(;;)
{
max_bin_index++;
if (om_BinSize[max_bin_index] == OM_MAX_BLOCK_SIZE) break;
}
if (argc > 1)
{
/* output what goes into omTables.h */
printf(
"#ifndef OM_TABLES_H\n"
"#define OM_TABLES_H\n"
"#define OM_MAX_BLOCK_SIZE %d\n"
"#define OM_MAX_BIN_INDEX %d\n"
"#define OM_SIZEOF_UNIQUE_MAX_BLOCK_THRESHOLD %d\n"
"#endif /* OM_TABLES_H */\n"
, OM_MAX_BLOCK_SIZE, max_bin_index, GetMaxBlockThreshold());
return 0;
}
printf(
"#ifndef OM_TABLES_INC\n"
"#define OM_TABLES_INC\n"
);
/* Output om_StaticBin */
OutputStaticBin(om_BinSize, max_bin_index, 0);
/* Output om_Size2Bin */
OutputSize2Bin(om_BinSize, OM_MAX_BLOCK_SIZE, 0);
#ifdef OM_ALIGNMENT_NEEDS_WORK
OutputSize2AlignedBin(om_BinSize, OM_MAX_BLOCK_SIZE, 0);
#endif
printf("\n#ifdef OM_HAVE_TRACK\n");
/* Output om_StaticBin */
OutputStaticBin(om_BinSize, max_bin_index, 1);
/* Output om_Size2Bin */
#ifdef OM_ALIGNMENT_NEEDS_WORK
OutputSize2AlignedBin(om_BinSize, OM_MAX_BLOCK_SIZE, 1);
#else
OutputSize2Bin(om_BinSize, OM_MAX_BLOCK_SIZE, 1);
#endif
printf("\n#endif /* OM_HAVE_TRACK */\n");
printf("\n#endif /* OM_TABLES_INC */\n");
return 0;
}
#endif /* MH_TABLES_C */
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