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Allocate Dynarec memory by 2Mb batch, and advise for hugepage if available

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This commit is contained in:
ptitSeb 2024-05-19 18:07:21 +02:00
parent b044c19329
commit dd5bba2aac
1 changed files with 7 additions and 3 deletions
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10
src/custommem.c
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@ -69,6 +69,7 @@ typedef struct blocklist_s {
} blocklist_t;
#define MMAPSIZE (64*1024) // allocate 64kb sized blocks
#define DYNMMAPSZ (2*1024*1024) // allocate 2Mb block for dynarec
static int n_blocks = 0; // number of blocks for custom malloc
static int c_blocks = 0; // capacity of blocks for custom malloc
@ -530,7 +531,7 @@ uintptr_t AllocDynarecMap(size_t size)
// check if new
if(!list->chunks[i].size) {
// alloc a new block, aversized or not, we are at the end of the list
size_t allocsize = (sz>MMAPSIZE)?sz:MMAPSIZE;
size_t allocsize = (sz>DYNMMAPSZ)?sz:DYNMMAPSZ;
// allign sz with pagesize
allocsize = (allocsize+(box86_pagesize-1))&~(box86_pagesize-1);
#ifndef USE_MMAP
@ -542,10 +543,13 @@ uintptr_t AllocDynarecMap(size_t size)
mprotect(p, allocsize, PROT_READ | PROT_WRITE | PROT_EXEC);
#else
void* p = mmap(NULL, allocsize, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
if(p==(void*)-1) {
dynarec_log(LOG_INFO, "Cannot create dynamic map of %zu bytes\n", allocsize);
if(p==MAP_FAILED) {
dynarec_log(LOG_INFO, "Cannot create dynamic map of %zu bytes (%s)\n", allocsize, strerror(errno));
return 0;
}
#ifdef MADV_HUGEPAGE
madvise(p, allocsize, MADV_HUGEPAGE);
#endif
#endif
#ifdef TRACE_MEMSTAT
dynarec_allocated += allocsize;