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improve remap primitive interface

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daanx 2023-04-30 13:01:17 -07:00
parent 1246f46625
commit 10fbe6cf0f
5 changed files with 205 additions and 272 deletions
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25
include/mimalloc/prim.h
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@ -70,22 +70,23 @@ int _mi_prim_protect(void* addr, size_t size, bool protect);
int _mi_prim_alloc_huge_os_pages(void* hint_addr, size_t size, int numa_node, bool* is_zero, void** addr);
// Allocate remappable memory that can be used with `_mi_prim_remap`.
// Reserve a pure virtual address range that can be used with `_mi_prim_remap_to`.
// Return `EINVAL` if this is not supported.
// The returned memory is always committed and aligned at `alignment`.
// If `is_pinned` is `true` the memory cannot be decommitted or reset.
// The `remap_info` argument can be used to store OS specific information that is passed to `_mi_prim_remap` and `_mi_prim_free_remappable`.
int _mi_prim_alloc_remappable(size_t size, size_t alignment, bool* is_pinned, bool* is_zero, void** addr, void** remap_info );
// If `is_pinned` is set to `true`, the memory cannot be decommitted or reset.
// The `remap_info` argument can be used to store OS specific information that is passed to `_mi_prim_remap_to` and `_mi_prim_remap_free`.
int _mi_prim_remap_reserve(size_t size, bool* is_pinned, void** addr, void** remap_info );
// Remap remappable memory. Return `EINVAL` if this is not supported.
// If remapped, the alignment should be preserved.
// pre: `addr != NULL` and previously allocated using `_mi_prim_remap` or `_mi_prim_alloc_remappable`.
// `newsize > 0`, `size > 0`, `alignment > 0`, `allow_large != NULL`, `newaddr != NULL`.
int _mi_prim_remap(void* addr, size_t size, size_t newsize, size_t alignment, bool* extend_is_zero, void** newaddr, void** remap_info );
// Remap remappable memory from `addr` to `newaddr` with the new `newsize`. Return `EINVAL` if this is not supported.
// Both `addr` (if not NULL) and `newaddr` are inside ranges returned from `_mi_prim_remap_reserve`.
// The `addr` can be NULL to allocate freshly. The `base` pointer is always `<= addr` and if `base != addr`,
// then it was the pointer returned from `_mi_prim_remap_reserve`.
// This is used to ensure we can remap _aligned_ addresses (`addr` and `newaddr`).
// pre: `newsize > 0`, `size > 0`, `newaddr != NULL`, `extend_zero != NULL`, `remap_info != NULL`.
int _mi_prim_remap_to(void* base, void* addr, size_t size, void* newaddr, size_t newsize, bool* extend_is_zero, void** remap_info, void** new_remap_info );
// Free remappable memory. Return `EINVAL` if this is not supported.
// pre: `addr != NULL` and previously allocated using `_mi_prim_remap` or `_mi_prim_alloc_remappable`.
int _mi_prim_free_remappable(void* addr, size_t size, void* remap_info );
// pre: `addr != NULL`
int _mi_prim_remap_free(void* addr, size_t size, void* remap_info );
// Return the current NUMA node