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Unified Diff: util/mach/scoped_task_suspend.cc

Issue 649693002: Add ScopedTaskSuspend and its test (Closed) Base URL: https://chromium.googlesource.com/crashpad/crashpad@master
Patch Set: Update documentation Created 6 years, 2 months ago
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Index: util/mach/scoped_task_suspend.cc
diff --git a/util/mach/scoped_task_suspend.cc b/util/mach/scoped_task_suspend.cc
new file mode 100644
index 0000000000000000000000000000000000000000..abca77e302aa3c8ca945ad026e9c1ceb6485888c
--- /dev/null
+++ b/util/mach/scoped_task_suspend.cc
@@ -0,0 +1,39 @@
+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util/mach/scoped_task_suspend.h"
+
+#include "base/logging.h"
+#include "base/mac/mach_logging.h"
+
+namespace crashpad {
+
+ScopedTaskSuspend::ScopedTaskSuspend(task_t task) : task_(task) {
+ DCHECK_NE(task_, mach_task_self());
+
+ kern_return_t kr = task_suspend(task_);
+ if (kr != KERN_SUCCESS) {
+ task_ = TASK_NULL;
+ MACH_LOG(ERROR, kr) << "task_suspend";
+ }
+}
+
+ScopedTaskSuspend::~ScopedTaskSuspend() {
+ if (task_ != TASK_NULL) {
+ kern_return_t kr = task_resume(task_);
+ MACH_LOG_IF(ERROR, kr != KERN_SUCCESS, kr) << "task_resume";
+ }
+}
+
+} // namespace crashpad
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