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-rw-r--r--tools/profiler/rust-api/src/time.rs71
1 files changed, 71 insertions, 0 deletions
diff --git a/tools/profiler/rust-api/src/time.rs b/tools/profiler/rust-api/src/time.rs
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+++ b/tools/profiler/rust-api/src/time.rs
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Gecko profiler time.
+
+use crate::gecko_bindings::{bindings, structs::mozilla};
+use std::mem::MaybeUninit;
+
+/// Profiler time for the marker API.
+/// This should be used as the `MarkerTiming` parameter.
+/// E.g.:
+///
+/// ```
+/// let start = ProfilerTime::now();
+/// // ...some code...
+/// gecko_profiler::add_untyped_marker(
+/// "marker name",
+/// category,
+/// MarkerOptions {
+/// timing: MarkerTiming::interval_until_now_from(start),
+/// ..Default::default()
+/// },
+/// );
+/// ```
+#[derive(Debug)]
+pub struct ProfilerTime(pub(crate) mozilla::TimeStamp);
+
+impl ProfilerTime {
+ pub fn now() -> ProfilerTime {
+ let mut marker_timing = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_timestamp_now(marker_timing.as_mut_ptr());
+ ProfilerTime(marker_timing.assume_init())
+ }
+ }
+
+ pub fn add_microseconds(self, microseconds: f64) -> Self {
+ let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_add_timestamp(&self.0, dest.as_mut_ptr(), microseconds);
+ ProfilerTime(dest.assume_init())
+ }
+ }
+
+ pub fn subtract_microseconds(self, microseconds: f64) -> Self {
+ let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_subtract_timestamp(&self.0, dest.as_mut_ptr(), microseconds);
+ ProfilerTime(dest.assume_init())
+ }
+ }
+}
+
+impl Clone for ProfilerTime {
+ fn clone(&self) -> Self {
+ let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_clone_timestamp(&self.0, dest.as_mut_ptr());
+ ProfilerTime(dest.assume_init())
+ }
+ }
+}
+
+impl Drop for ProfilerTime {
+ fn drop(&mut self) {
+ unsafe {
+ bindings::gecko_profiler_destruct_timestamp(&mut self.0);
+ }
+ }
+}