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Use VM_INHERIT_COPY instead

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This aligns with the use of `MAP_PRIVATE` in `mmap`-based
implementations.
This commit is contained in:
Feoramund
2025-01-28 14:19:23 -05:00
parent 4c59019a57
commit ef72a373b2
1 changed files with 4 additions and 4 deletions
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8
base/runtime/virtual_memory_darwin.odin
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@@ -38,11 +38,11 @@ VM_FLAGS_SUPERPAGE_SIZE_2MB :: SUPERPAGE_SIZE_2MB << VM_FLAGS_SUPERPAGE_SHIFT
MEMORY_OBJECT_NULL :: 0
VM_PROT_READ :: 0x01
VM_PROT_WRITE :: 0x02
VM_INHERIT_SHARE :: 0
VM_INHERIT_COPY :: 1
_allocate_virtual_memory :: proc "contextless" (size: int) -> rawptr {
address: u64
result := mach_vm_map(mach_task_self(), &address, u64(size), 0, VM_FLAGS_ANYWHERE, MEMORY_OBJECT_NULL, 0, false, VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, VM_INHERIT_SHARE)
result := mach_vm_map(mach_task_self(), &address, u64(size), 0, VM_FLAGS_ANYWHERE, MEMORY_OBJECT_NULL, 0, false, VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, VM_INHERIT_COPY)
if result != 0 {
return nil
}
@@ -62,7 +62,7 @@ _allocate_virtual_memory_superpage :: proc "contextless" () -> rawptr {
}
}
alignment_mask: u64 = SUPERPAGE_SIZE - 1 // Assumes a power of two size, ensured by an assertion in `virtual_memory.odin`.
result := mach_vm_map(mach_task_self(), &address, SUPERPAGE_SIZE, alignment_mask, flags, MEMORY_OBJECT_NULL, 0, false, VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, VM_INHERIT_SHARE)
result := mach_vm_map(mach_task_self(), &address, SUPERPAGE_SIZE, alignment_mask, flags, MEMORY_OBJECT_NULL, 0, false, VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, VM_INHERIT_COPY)
if result != 0 {
return nil
}
@@ -73,7 +73,7 @@ _allocate_virtual_memory_superpage :: proc "contextless" () -> rawptr {
_allocate_virtual_memory_aligned :: proc "contextless" (size: int, alignment: int) -> rawptr {
address: u64
alignment_mask: u64 = u64(alignment) - 1
result := mach_vm_map(mach_task_self(), &address, u64(size), alignment_mask, VM_FLAGS_ANYWHERE, MEMORY_OBJECT_NULL, 0, false, VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, VM_INHERIT_SHARE)
result := mach_vm_map(mach_task_self(), &address, u64(size), alignment_mask, VM_FLAGS_ANYWHERE, MEMORY_OBJECT_NULL, 0, false, VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, VM_INHERIT_COPY)
if result != 0 {
return nil
}