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mem/virtual: use sysconf for retrieving page size and actually use these init procs

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This commit is contained in:
Laytan Laats
2024-08-29 14:36:32 +02:00
parent 1e6419b5b7
commit fd2ad20cd4
2 changed files with 9 additions and 2 deletions
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core/mem/virtual/virtual.odin
+5
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@@ -7,6 +7,11 @@ _ :: runtime
DEFAULT_PAGE_SIZE := uint(4096) DEFAULT_PAGE_SIZE := uint(4096)
@(init, private)
platform_memory_init :: proc() {
_platform_memory_init()
}
Allocator_Error :: mem.Allocator_Error Allocator_Error :: mem.Allocator_Error
@(require_results) @(require_results)
core/mem/virtual/virtual_posix.odin
+3 -1
View File
@@ -51,7 +51,9 @@ _protect :: proc "contextless" (data: rawptr, size: uint, flags: Protect_Flags)
} }
_platform_memory_init :: proc() { _platform_memory_init :: proc() {
DEFAULT_PAGE_SIZE = posix.PAGE_SIZE // NOTE: `posix.PAGESIZE` due to legacy reasons could be wrong so we use `sysconf`.
size := posix.sysconf(._PAGESIZE)
DEFAULT_PAGE_SIZE = uint(max(size, posix.PAGESIZE))
// is power of two // is power of two
assert(DEFAULT_PAGE_SIZE != 0 && (DEFAULT_PAGE_SIZE & (DEFAULT_PAGE_SIZE-1)) == 0) assert(DEFAULT_PAGE_SIZE != 0 && (DEFAULT_PAGE_SIZE & (DEFAULT_PAGE_SIZE-1)) == 0)