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(svn r11943) -Codechange: add and use a simple structure to support small stacks by allocating it on the heap or pushing a few kB of data onto the stack when there is a large stack.

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This commit is contained in:
rubidium
2008-01-22 12:09:12 +00:00
parent 30bac58bde
commit 59ec5e62ce
2 changed files with 121 additions and 136 deletions
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226
src/misc.cpp
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@@ -25,6 +25,7 @@
#include "texteff.hpp"
#include "string_func.h"
#include "gfx_func.h"
#include "core/alloc_func.hpp"
#include "table/strings.h"
#include "table/sprites.h"
@@ -260,196 +261,161 @@ static void Load_MAPS()
AllocateMap(_map_dim_x, _map_dim_y);
}
enum {
MAP_SL_BUF_SIZE = 4096
};
static void Load_MAPT()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
byte buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _m[i++].type_height = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].type_height = buf[j];
}
}
static void Save_MAPT()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
byte buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].type_height;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].type_height;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}
static void Load_MAP1()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
byte buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _m[i++].m1 = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m1 = buf[j];
}
}
static void Save_MAP1()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
byte buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].m1;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m1;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}
static void Load_MAP2()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<uint16, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
uint16 buf[4096];
uint j;
SlArray(buf, lengthof(buf),
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE,
/* In those versions the m2 was 8 bits */
CheckSavegameVersion(5) ? SLE_FILE_U8 | SLE_VAR_U16 : SLE_UINT16
);
for (j = 0; j != lengthof(buf); j++) _m[i++].m2 = buf[j];
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m2 = buf[j];
}
}
static void Save_MAP2()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<uint16, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size * sizeof(_m[0].m2));
for (i = 0; i != size;) {
uint16 buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].m2;
SlArray(buf, lengthof(buf), SLE_UINT16);
SlSetLength(size * sizeof(uint16));
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m2;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT16);
}
}
static void Load_MAP3()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
byte buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _m[i++].m3 = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m3 = buf[j];
}
}
static void Save_MAP3()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
byte buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].m3;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m3;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}
static void Load_MAP4()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
byte buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _m[i++].m4 = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m4 = buf[j];
}
}
static void Save_MAP4()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
byte buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].m4;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m4;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}
static void Load_MAP5()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
byte buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _m[i++].m5 = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m5 = buf[j];
}
}
static void Save_MAP5()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
byte buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].m5;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m5;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}
static void Load_MAP6()
{
/* Still available for loading old games */
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
if (CheckSavegameVersion(42)) {
for (i = 0; i != size;) {
uint8 buf[1024];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) {
for (TileIndex i = 0; i != size;) {
/* 1024, otherwise we overflow on 64x64 maps! */
SlArray(buf, 1024, SLE_UINT8);
for (uint j = 0; j != 1024; j++) {
_m[i++].m6 = GB(buf[j], 0, 2);
_m[i++].m6 = GB(buf[j], 2, 2);
_m[i++].m6 = GB(buf[j], 4, 2);
@@ -457,57 +423,45 @@ static void Load_MAP6()
}
}
} else {
for (i = 0; i != size;) {
byte buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _m[i++].m6 = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m6 = buf[j];
}
}
}
static void Save_MAP6()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
uint8 buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _m[i++].m6;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m6;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}
static void Load_MAP7()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
for (i = 0; i != size;) {
uint8 buf[4096];
uint j;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (j = 0; j != lengthof(buf); j++) _me[i++].m7 = buf[j];
for (TileIndex i = 0; i != size;) {
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _me[i++].m7 = buf[j];
}
}
static void Save_MAP7()
{
uint size = MapSize();
uint i;
SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
TileIndex size = MapSize();
SlSetLength(size);
for (i = 0; i != size;) {
uint8 buf[4096];
uint j;
for (j = 0; j != lengthof(buf); j++) buf[j] = _me[i++].m7;
SlArray(buf, lengthof(buf), SLE_UINT8);
for (TileIndex i = 0; i != size;) {
for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _me[i++].m7;
SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
}
}