File: stack_sampling_profiler_java_test_util.cc

package info (click to toggle)
chromium 120.0.6099.224-1~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 6,112,112 kB
  • sloc: cpp: 32,907,025; ansic: 8,148,123; javascript: 3,679,536; python: 2,031,248; asm: 959,718; java: 804,675; xml: 617,256; sh: 111,417; objc: 100,835; perl: 88,443; cs: 53,032; makefile: 29,579; fortran: 24,137; php: 21,162; tcl: 21,147; sql: 20,809; ruby: 17,735; pascal: 12,864; yacc: 8,045; lisp: 3,388; lex: 1,323; ada: 727; awk: 329; jsp: 267; csh: 117; exp: 43; sed: 37
file content (44 lines) | stat: -rw-r--r-- 1,290 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/profiler/stack_sampling_profiler_java_test_util.h"

#include "base/base_profiler_test_support_jni/TestSupport_jni.h"
#include "base/location.h"

namespace base {

namespace {

struct UnwinderJavaTestSupportParams {
  OnceClosure closure;
  FunctionAddressRange range;
};

}  // namespace

void JNI_TestSupport_InvokeCallbackFunction(JNIEnv* env, jlong context) {
  const void* start_program_counter = GetProgramCounter();

  UnwinderJavaTestSupportParams* params =
      reinterpret_cast<UnwinderJavaTestSupportParams*>(context);
  if (!params->closure.is_null()) {
    std::move(params->closure).Run();
  }

  // Volatile to prevent a tail call to GetProgramCounter().
  const void* volatile end_program_counter = GetProgramCounter();

  params->range = {start_program_counter, end_program_counter};
}

FunctionAddressRange callWithJavaFunction(OnceClosure closure) {
  JNIEnv* env = base::android::AttachCurrentThread();
  UnwinderJavaTestSupportParams params{std::move(closure), {}};
  base::Java_TestSupport_callWithJavaFunction(
      env, reinterpret_cast<uintptr_t>(&params));
  return params.range;
}

}  // namespace base