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allow wasm32 compilation of librustc_data_structures/profiling.rs #71369

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Merged
merged 6 commits into from
Apr 23, 2020
Merged

allow wasm32 compilation of librustc_data_structures/profiling.rs #71369

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df3776b
allow wasm32 compilation of librustc_data_structures/profiling.rs
ctaggart Apr 21, 2020
6fb524a
./x.py fmt
ctaggart Apr 21, 2020
f72de47
use cfg_if! and use FileSerializationSink for wasi
ctaggart Apr 21, 2020
d5963ed
accept cfg_if suggestion
ctaggart Apr 21, 2020
02241db
suggested rearrangement of the cfg if statements
ctaggart Apr 22, 2020
51b194f
remove some extra }
ctaggart Apr 22, 2020
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62 changes: 30 additions & 32 deletions src/librustc_data_structures/profiling.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -607,41 +607,39 @@ pub fn duration_to_secs_str(dur: std::time::Duration) -> String {
}

// Memory reporting
cfg_if! {
if #[cfg(target_arch = "wasm32")] {
fn get_resident() -> Option<usize> {
None
}
} else {
cfg_if! {
if #[cfg(windows)] {
fn get_resident() -> Option<usize> {
use std::mem::{self, MaybeUninit};
use winapi::shared::minwindef::DWORD;
use winapi::um::processthreadsapi::GetCurrentProcess;
use winapi::um::psapi::{GetProcessMemoryInfo, PROCESS_MEMORY_COUNTERS};

let mut pmc = MaybeUninit::<PROCESS_MEMORY_COUNTERS>::uninit();
match unsafe {
GetProcessMemoryInfo(GetCurrentProcess(), pmc.as_mut_ptr(), mem::size_of_val(&pmc) as DWORD)
} {
0 => None,
_ => {
let pmc = unsafe { pmc.assume_init() };
Some(pmc.WorkingSetSize as usize)
}
cfg_if! {
if #[cfg(windows)] {
fn get_resident() -> Option<usize> {
use std::mem::{self, MaybeUninit};
use winapi::shared::minwindef::DWORD;
use winapi::um::processthreadsapi::GetCurrentProcess;
use winapi::um::psapi::{GetProcessMemoryInfo, PROCESS_MEMORY_COUNTERS};

let mut pmc = MaybeUninit::<PROCESS_MEMORY_COUNTERS>::uninit();
match unsafe {
GetProcessMemoryInfo(GetCurrentProcess(), pmc.as_mut_ptr(), mem::size_of_val(&pmc) as DWORD)
} {
0 => None,
_ => {
let pmc = unsafe { pmc.assume_init() };
Some(pmc.WorkingSetSize as usize)
}
}
} else {
fn get_resident() -> Option<usize> {
let field = 1;
let contents = fs::read("/proc/self/statm").ok()?;
let contents = String::from_utf8(contents).ok()?;
let s = contents.split_whitespace().nth(field)?;
let npages = s.parse::<usize>().ok()?;
Some(npages * 4096)
}
}
} else if #[cfg(unix)] {
fn get_resident() -> Option<usize> {
let field = 1;
let contents = fs::read("/proc/self/statm").ok()?;
let contents = String::from_utf8(contents).ok()?;
let s = contents.split_whitespace().nth(field)?;
let npages = s.parse::<usize>().ok()?;
Some(npages * 4096)
}
} else {
fn get_resident() -> Option<usize> {
None
}
}
}
}
}