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Use static global memory for std handles instead of allocating.

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This commit is contained in:
gingerBill
2025-01-05 12:53:20 +00:00
parent 397e371232
commit 1bf33fe373
7 changed files with 93 additions and 76 deletions
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core/os/os2/file_posix.odin
+29 -20
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@@ -21,23 +21,29 @@ File_Impl :: struct {
name: string,
cname: cstring,
fd: posix.FD,
allocator: runtime.Allocator,
}
@(init)
init_std_files :: proc() {
// NOTE: is this (paths) also the case on non darwin?
new_std :: proc(impl: ^File_Impl, fd: posix.FD, name: cstring) -> ^File {
impl.file.impl = impl
impl.fd = fd
impl.allocator = runtime.nil_allocator()
impl.cname = name
impl.name = string(name)
impl.file.stream = {
data = impl,
procedure = _file_stream_proc,
}
impl.file.fstat = _fstat
return &impl.file
}
stdin = __new_file(posix.STDIN_FILENO)
(^File_Impl)(stdin.impl).name = "/dev/stdin"
(^File_Impl)(stdin.impl).cname = "/dev/stdin"
stdout = __new_file(posix.STDIN_FILENO)
(^File_Impl)(stdout.impl).name = "/dev/stdout"
(^File_Impl)(stdout.impl).cname = "/dev/stdout"
stderr = __new_file(posix.STDIN_FILENO)
(^File_Impl)(stderr.impl).name = "/dev/stderr"
(^File_Impl)(stderr.impl).cname = "/dev/stderr"
@(static) files: [3]File_Impl
stdin = new_std(&files[0], posix.STDIN_FILENO, "/dev/stdin")
stdout = new_std(&files[1], posix.STDOUT_FILENO, "/dev/stdout")
stderr = new_std(&files[2], posix.STDERR_FILENO, "/dev/stderr")
}
_open :: proc(name: string, flags: File_Flags, perm: int) -> (f: ^File, err: Error) {
@@ -72,10 +78,10 @@ _open :: proc(name: string, flags: File_Flags, perm: int) -> (f: ^File, err: Err
return
}
return _new_file(uintptr(fd), name)
return _new_file(uintptr(fd), name, file_allocator())
}
_new_file :: proc(handle: uintptr, name: string) -> (f: ^File, err: Error) {
_new_file :: proc(handle: uintptr, name: string, allocator: runtime.Allocator) -> (f: ^File, err: Error) {
if name == "" {
err = .Invalid_Path
return
@@ -84,10 +90,10 @@ _new_file :: proc(handle: uintptr, name: string) -> (f: ^File, err: Error) {
return
}
crname := _posix_absolute_path(posix.FD(handle), name, file_allocator()) or_return
crname := _posix_absolute_path(posix.FD(handle), name, allocator) or_return
rname := string(crname)
f = __new_file(posix.FD(handle))
f = __new_file(posix.FD(handle), allocator)
impl := (^File_Impl)(f.impl)
impl.name = rname
impl.cname = crname
@@ -95,10 +101,11 @@ _new_file :: proc(handle: uintptr, name: string) -> (f: ^File, err: Error) {
return f, nil
}
__new_file :: proc(handle: posix.FD) -> ^File {
impl := new(File_Impl, file_allocator())
__new_file :: proc(handle: posix.FD, allocator: runtime.Allocator) -> ^File {
impl := new(File_Impl, allocator)
impl.file.impl = impl
impl.fd = posix.FD(handle)
impl.allocator = allocator
impl.file.stream = {
data = impl,
procedure = _file_stream_proc,
@@ -114,8 +121,10 @@ _close :: proc(f: ^File_Impl) -> (err: Error) {
err = _get_platform_error()
}
delete(f.cname, file_allocator())
free(f, file_allocator())
allocator := f.allocator
delete(f.cname, allocator)
free(f, allocator)
return
}