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Add getppid to std.c and std.os.linux. #20866

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Merged
merged 1 commit into from
Aug 7, 2024
Merged

Add getppid to std.c and std.os.linux. #20866

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1 change: 1 addition & 0 deletions lib/std/c.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -9351,6 +9351,7 @@ pub extern "c" fn setlogmask(maskpri: c_int) c_int;
pub extern "c" fn if_nametoindex([*:0]const u8) c_int;

pub extern "c" fn getpid() pid_t;
pub extern "c" fn getppid() pid_t;
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@alexrp alexrp Jul 30, 2024 •
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Note that this doesn't exist on Windows.

I think it's "fine" in that it's no worse than many of the other declarations immediately surrounding it. Just noting that at some point we need to go through and change these declarations to be in line with the principles laid out in #20679. I don't think this necessarily has to block merging this PR, since that conversion work will likely be done in a batched fashion anyway.


/// These are implementation defined but share identical values in at least musl and glibc:
/// - https://git.musl-libc.org/cgit/musl/tree/include/locale.h?id=ab31e9d6a0fa7c5c408856c89df2dfb12c344039#n18
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4 changes: 4 additions & 0 deletions lib/std/os/linux.zig
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Expand Up @@ -1579,6 +1579,10 @@ pub fn getpid() pid_t {
return @bitCast(@as(u32, @truncate(syscall0(.getpid))));
}

pub fn getppid() pid_t {
return @bitCast(@as(u32, @truncate(syscall0(.getppid))));
}

pub fn gettid() pid_t {
return @bitCast(@as(u32, @truncate(syscall0(.gettid))));
}
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4 changes: 4 additions & 0 deletions lib/std/os/linux/test.zig
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Expand Up @@ -32,6 +32,10 @@ test "getpid" {
try expect(linux.getpid() != 0);
}

test "getppid" {
try expect(linux.getppid() != 0);
}

test "timer" {
const epoll_fd = linux.epoll_create();
var err: linux.E = linux.E.init(epoll_fd);
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