1 /*
2 * Copyright (C) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 //! hitrace_meter dylib_create for rust.
17 use std::ffi::{CString, c_char, c_int, c_longlong, c_ulonglong};
18
19 /// Track the beginning of a context
start_trace(label: u64, value: &str)20 pub fn start_trace(label: u64, value: &str) {
21 let value_raw_ptr = CString::new(value).unwrap();
22 // Safty: call C ffi border function, all risks are under control.
23 unsafe {
24 StartTraceWrapper(label, value_raw_ptr.as_ptr() as *const c_char);
25 }
26 }
27
28 /// Track the end of a context
finish_trace(label: u64)29 pub fn finish_trace(label: u64) {
30 // Safty: call C ffi border function, all risks are under control.
31 unsafe {
32 FinishTrace(label);
33 }
34 }
35
36 /// Track the beginning of an asynchronous event
start_trace_async(label: u64, value: &str, task_id: i32)37 pub fn start_trace_async(label: u64, value: &str, task_id: i32) {
38 let value_raw_ptr = CString::new(value).unwrap();
39 // Safty: call C ffi border function, all risks are under control.
40 unsafe {
41 StartAsyncTraceWrapper(label, value_raw_ptr.as_ptr() as *const c_char, task_id);
42 }
43 }
44
45 /// Track the end of an asynchronous event
finish_trace_async(label: u64, value: &str, task_id: i32)46 pub fn finish_trace_async(label: u64, value: &str, task_id: i32) {
47 let value_raw_ptr = CString::new(value).unwrap();
48 // Safty: call C ffi border function, all risks are under control.
49 unsafe {
50 FinishAsyncTraceWrapper(label, value_raw_ptr.as_ptr() as *const c_char, task_id);
51 }
52 }
53
54 /// Track the 64-bit integer counter value
count_trace(label: u64, name: &str, count: i64)55 pub fn count_trace(label: u64, name: &str, count: i64) {
56 let name_raw_ptr = CString::new(name).unwrap();
57 // Safty: call C ffi border function, all risks are under control.
58 unsafe {
59 CountTraceWrapper(label, name_raw_ptr.as_ptr() as *const c_char, count);
60 }
61 }
62
63 extern "C" {
64 /// ffi border function -> start trace
StartTraceWrapper(label: c_ulonglong, value: *const c_char)65 pub(crate) fn StartTraceWrapper(label: c_ulonglong, value: *const c_char);
66
67 /// ffi border function -> finish trace
FinishTrace(label: c_ulonglong)68 pub(crate) fn FinishTrace(label: c_ulonglong);
69
70 /// ffi border function -> start async trace
StartAsyncTraceWrapper(label: c_ulonglong, value: *const c_char, taskId: c_int)71 pub(crate) fn StartAsyncTraceWrapper(label: c_ulonglong, value: *const c_char, taskId: c_int);
72
73 /// ffi border function -> finish async trace
FinishAsyncTraceWrapper(label: c_ulonglong, value: *const c_char, taskId: c_int)74 pub(crate) fn FinishAsyncTraceWrapper(label: c_ulonglong, value: *const c_char, taskId: c_int);
75
76 /// ffi border function -> count trace
CountTraceWrapper(label: c_ulonglong, name: *const c_char, count: c_longlong)77 pub(crate) fn CountTraceWrapper(label: c_ulonglong, name: *const c_char, count: c_longlong);
78 }
79