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bc50af15a2
Bug: chromium:852541 Change-Id: Ie05c70f249e6f843183a02ec61fd09f6a0607598 Reviewed-on: https://chromium-review.googlesource.com/1148923 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Wez <wez@chromium.org>
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
// Copyright 2018 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/fuchsia/scoped_task_suspend.h"
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#include <lib/zx/time.h>
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#include <vector>
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#include "base/fuchsia/fuchsia_logging.h"
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#include "base/logging.h"
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#include "util/fuchsia/koid_utilities.h"
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namespace crashpad {
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namespace {
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// Returns the suspend token of the suspended thread. This function attempts
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// to wait a short time for the thread to actually suspend before returning
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// but this is not guaranteed.
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zx::suspend_token SuspendThread(const zx::thread& thread) {
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zx::suspend_token token;
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zx_status_t status = thread.suspend(&token);
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if (status != ZX_OK) {
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ZX_LOG(ERROR, status) << "zx_task_suspend";
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return zx::suspend_token();
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}
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zx_signals_t observed = 0u;
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if (thread.wait_one(ZX_THREAD_SUSPENDED,
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zx::deadline_after(zx::msec(50)),
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&observed) != ZX_OK) {
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LOG(ERROR) << "thread failed to suspend";
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}
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return token;
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}
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} // namespace
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ScopedTaskSuspend::ScopedTaskSuspend(const zx::process& process) {
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DCHECK_NE(process.get(), zx::process::self()->get());
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for (const auto& thread : GetThreadHandles(process))
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suspend_tokens_.push_back(SuspendThread(thread));
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}
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ScopedTaskSuspend::ScopedTaskSuspend(const zx::thread& thread) {
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DCHECK_NE(thread.get(), zx::thread::self()->get());
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suspend_tokens_.push_back(SuspendThread(thread));
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}
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} // namespace crashpad
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