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wrap code cache earlier to prevent large blocks at the end of the cache (crazyc)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2975
This commit is contained in:
Sebastian Strohhäcker 2007-08-18 15:36:19 +00:00
parent 04ec89a7d2
commit 62c4a16823
1 changed files with 10 additions and 7 deletions
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17
src/cpu/core_dynrec/cache.h
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@ -70,8 +70,16 @@ static struct {
CodePageHandlerDynRec * last_page; // the last used page
} cache;
// cache memory pointers, to be malloc'd later
static Bit8u * cache_code_start_ptr=NULL;
static Bit8u * cache_code=NULL;
static Bit8u * cache_code_link_blocks=NULL;
static CacheBlockDynRec * cache_blocks=NULL;
static CacheBlockDynRec link_blocks[2]; // default linking (specially marked)
// the CodePageHandlerDynRec class provides access to the contained
// cache blocks and intercepts writes to the code for special treatment
class CodePageHandlerDynRec : public PageHandler {
@ -440,7 +448,7 @@ static CacheBlockDynRec * cache_openblock(void) {
block->Clear();
// block size must be at least CACHE_MAXSIZE
while (size<CACHE_MAXSIZE) {
if (!nextblock)
if (!nextblock)
goto skipresize;
// merge blocks
size+=nextblock->cache.size;
@ -490,7 +498,7 @@ static void cache_closeblock(void) {
}
}
// advance the active block pointer
if (!block->cache.next) {
if (!block->cache.next || (block->cache.next->cache.start>(cache_code_start_ptr + CACHE_TOTAL - CACHE_MAXSIZE))) {
// LOG_MSG("Cache full restarting");
cache.block.active=cache.block.first;
} else {
@ -526,11 +534,6 @@ static INLINE void cache_addq(Bit64u val) {
static void dyn_return(BlockReturn retcode,bool ret_exception);
static void dyn_run_code(void);
// cache memory pointers, to be malloc'd later
static Bit8u * cache_code_start_ptr=NULL;
static Bit8u * cache_code=NULL;
static Bit8u * cache_code_link_blocks=NULL;
static CacheBlockDynRec * cache_blocks=NULL;
/* Define temporary pagesize so the MPROTECT case and the regular case share as much code as possible */
#if (C_HAVE_MPROTECT)