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Add std.os.getrusage

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data-man 2019-12-06 06:29:23 +05:00 committed by Andrew Kelley
parent 62bebda270
commit 2f6b045fb1
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3 changed files with 38 additions and 0 deletions
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11
lib/std/os.zig
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@ -3325,3 +3325,14 @@ pub fn memfd_create(name: []const u8, flags: u32) !fd_t {
const name_t = try toMemFdPath(name);
return memfd_createC(&name_t, flags);
}
pub fn getrusage(who: i32) rusage {
var result: rusage = undefined;
const rc = system.getrusage(who, &result);
switch (errno(rc)) {
0 => return result,
EINVAL => unreachable,
EFAULT => unreachable,
else => unreachable,
}
}

23
lib/std/os/bits/linux.zig
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@ -1453,3 +1453,26 @@ pub const MFD_HUGE_512MB = HUGETLB_FLAG_ENCODE_512MB;
pub const MFD_HUGE_1GB = HUGETLB_FLAG_ENCODE_1GB;
pub const MFD_HUGE_2GB = HUGETLB_FLAG_ENCODE_2GB;
pub const MFD_HUGE_16GB = HUGETLB_FLAG_ENCODE_16GB;
pub const RUSAGE_SELF = 0;
pub const RUSAGE_CHILDREN = -1;
pub const RUSAGE_THREAD = 1;
pub const rusage = extern struct {
utime: timeval,
stime: timeval,
maxrss: isize,
ix_rss: isize,
idrss: isize,
isrss: isize,
minflt: isize,
majflt: isize,
nswap: isize,
inblock: isize,
oublock: isize,
msgsnd: isize,
msgrcv: isize,
nsignals: isize,
nvcsw: isize,
nivcsw: isize,
};

4
lib/std/os/linux.zig
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@ -1114,6 +1114,10 @@ pub fn memfd_create(name: [*:0]const u8, flags: u32) usize {
return syscall2(SYS_memfd_create, @ptrToInt(name), flags);
}
pub fn getrusage(who: i32, usage: *rusage) usize {
return syscall2(SYS_getrusage, @bitCast(usize, @as(isize, who)), @ptrToInt(usage));
}
test "" {
if (builtin.os == .linux) {
_ = @import("linux/test.zig");