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wip: remappable memory

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This commit is contained in:
daanx 2023-04-26 12:23:38 -07:00
parent a0bd338d96
commit be2f35641a
13 changed files with 406 additions and 78 deletions
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42
src/prim/unix/prim.c
View file

@ -11,6 +11,10 @@ terms of the MIT license. A copy of the license can be found in the file
#define _DEFAULT_SOURCE // ensure mmap flags and syscall are defined
#endif
#ifndef _GNU_SOURCE
#define _GNU_SOURCE // ensure mremap is defined
#endif
#if defined(__sun)
// illumos provides new mman.h api when any of these are defined
// otherwise the old api based on caddr_t which predates the void pointers one.
@ -861,3 +865,41 @@ void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
}
#endif
//----------------------------------------------------------------
// Remappable memory
//----------------------------------------------------------------
int _mi_prim_alloc_remappable(size_t size, size_t future_reserve, bool* is_pinned, bool* is_zero, void** addr, void** remap_info ) {
#if !defined(MREMAP_MAYMOVE)
MI_UNUSED(size); MI_UNUSED(future_reserve); MI_UNUSED(is_pinned); MI_UNUSED(is_zero); MI_UNUSED(addr); MI_UNUSED(remap_info);
return EINVAL;
#else
MI_UNUSED(future_reserve);
*remap_info = NULL;
return _mi_prim_alloc(size,1,true /* commit? */, true /* allow_large */, is_pinned /* is_large? */, is_zero, addr);
#endif
}
int _mi_prim_realloc_remappable(void* addr, size_t size, size_t newsize, bool* extend_is_zero, void** newaddr, void** remap_info ) {
#if !defined(MREMAP_MAYMOVE)
MI_UNUSED(addr); MI_UNUSED(size); MI_UNUSED(newsize); MI_UNUSED(extend_is_zero); MI_UNUSED(newaddr); MI_UNUSED(remap_info);
return EINVAL;
#else
mi_assert_internal(*remap_info == NULL); MI_UNUSED(remap_info);
void* p = mremap(addr,size,newsize,MREMAP_MAYMOVE);
if (p == MAP_FAILED) { return errno; }
*extend_is_zero = true;
*newaddr = p;
return 0;
#endif
}
int _mi_prim_free_remappable(void* addr, size_t size, void* remap_info ) {
MI_UNUSED(remap_info);
mi_assert_internal(remap_info == NULL);
return _mi_prim_free(addr,size);
}

20
src/prim/wasi/prim.c
View file

@ -273,3 +273,23 @@ void _mi_prim_thread_done_auto_done(void) {
void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
MI_UNUSED(heap);
}
//----------------------------------------------------------------
// Remappable memory
//----------------------------------------------------------------
int _mi_prim_alloc_remappable(size_t size, size_t future_reserve, bool* is_pinned, bool* is_zero, void** addr, void** remap_info ) {
MI_UNUSED(size); MI_UNUSED(future_reserve); MI_UNUSED(is_pinned); MI_UNUSED(is_zero); MI_UNUSED(addr); MI_UNUSED(remap_info);
return EINVAL;
}
int _mi_prim_realloc_remappable(void* addr, size_t size, size_t newsize, bool* extend_is_zero, void** newaddr, void** remap_info ) {
MI_UNUSED(addr); MI_UNUSED(size); MI_UNUSED(newsize); MI_UNUSED(extend_is_zero); MI_UNUSED(newaddr); MI_UNUSED(remap_info);
return EINVAL;
}
int _mi_prim_free_remappable(void* addr, size_t size, void* remap_info ) {
MI_UNUSED(addr); MI_UNUSED(size); MI_UNUSED(remap_info);
return EINVAL;
}

21
src/prim/windows/prim.c
View file

@ -620,3 +620,24 @@ void _mi_prim_thread_associate_default_heap(mi_heap_t* heap) {
}
#endif
//----------------------------------------------------------------
// Remappable memory
//----------------------------------------------------------------
int _mi_prim_alloc_remappable(size_t size, size_t future_reserve, bool* is_pinned, bool* is_zero, void** addr, void** remap_info ) {
MI_UNUSED(size); MI_UNUSED(future_reserve); MI_UNUSED(is_pinned); MI_UNUSED(is_zero); MI_UNUSED(addr); MI_UNUSED(remap_info);
return EINVAL;
}
int _mi_prim_realloc_remappable(void* addr, size_t size, size_t newsize, bool* extend_is_zero, void** newaddr, void** remap_info ) {
MI_UNUSED(addr); MI_UNUSED(size); MI_UNUSED(newsize); MI_UNUSED(extend_is_zero); MI_UNUSED(newaddr); MI_UNUSED(remap_info);
return EINVAL;
}
int _mi_prim_free_remappable(void* addr, size_t size, void* remap_info ) {
MI_UNUSED(addr); MI_UNUSED(size); MI_UNUSED(remap_info);
return EINVAL;
}