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A step towards making these files usable by non-Linux systems. Bug: crashpad:196 Change-Id: I71323b29e46208b3992055722e4622d79409c44c Reviewed-on: https://chromium-review.googlesource.com/685406 Commit-Queue: Dave Bort <dbort@google.com> Reviewed-by: Mark Mentovai <mark@chromium.org>
128 lines
4.1 KiB
C++
128 lines
4.1 KiB
C++
// Copyright 2017 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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#ifndef CRASHPAD_SNAPSHOT_LINUX_PROCESS_READER_H_
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#define CRASHPAD_SNAPSHOT_LINUX_PROCESS_READER_H_
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#include <sys/time.h>
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#include <sys/types.h>
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#include <memory>
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#include <vector>
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#include "base/macros.h"
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#include "util/linux/address_types.h"
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#include "util/linux/memory_map.h"
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#include "util/linux/ptrace_connection.h"
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#include "util/linux/thread_info.h"
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#include "util/misc/initialization_state_dcheck.h"
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#include "util/posix/process_info.h"
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#include "util/process/process_memory.h"
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namespace crashpad {
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//! \brief Accesses information about another process, identified by a process
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//! ID.
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class ProcessReader {
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public:
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//! \brief Contains information about a thread that belongs to a process.
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struct Thread {
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Thread();
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~Thread();
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ThreadInfo thread_info;
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LinuxVMAddress stack_region_address;
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LinuxVMSize stack_region_size;
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pid_t tid;
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int sched_policy;
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int static_priority;
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int nice_value;
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private:
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friend class ProcessReader;
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bool InitializePtrace(PtraceConnection* connection);
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void InitializeStack(ProcessReader* reader);
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};
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ProcessReader();
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~ProcessReader();
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//! \brief Initializes this object.
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//!
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//! This method must be successfully called before calling any other method in
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//! this class and may only be called once.
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//!
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//! \param[in] connection A PtraceConnection to the target process.
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//! \return `true` on success. `false` on failure with a message logged.
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bool Initialize(PtraceConnection* connection);
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//! \brief Return `true` if the target task is a 64-bit process.
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bool Is64Bit() const { return is_64_bit_; }
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//! \brief Return the target process' process ID.
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pid_t ProcessID() const { return process_info_.ProcessID(); }
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//! \brief Return the target process' parent process ID.
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pid_t ParentProcessID() const { return process_info_.ParentProcessID(); }
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//! \brief Return a memory reader for the target process.
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ProcessMemory* Memory() { return process_memory_.get(); }
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//! \brief Return a memory map of the target process.
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MemoryMap* GetMemoryMap() { return &memory_map_; }
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//! \brief Determines the target process’ start time.
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//!
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//! \param[out] start_time The time that the process started.
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//! \return `true` on success with \a start_time set. Otherwise `false` with a
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//! message logged.
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bool StartTime(timeval* start_time) const;
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//! \brief Determines the target process’ execution time.
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//!
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//! \param[out] user_time The amount of time the process has executed code in
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//! user mode.
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//! \param[out] system_time The amount of time the process has executed code
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//! in system mode.
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//!
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//! \return `true` on success, `false` on failure, with a warning logged. On
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//! failure, \a user_time and \a system_time will be set to represent no
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//! time spent executing code in user or system mode.
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bool CPUTimes(timeval* user_time, timeval* system_time) const;
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//! \brief Return a vector of threads that are in the task process. If the
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//! main thread is able to be identified and traced, it will be placed at
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//! index `0`.
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const std::vector<Thread>& Threads();
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private:
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void InitializeThreads();
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PtraceConnection* connection_; // weak
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ProcessInfo process_info_;
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class MemoryMap memory_map_;
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std::vector<Thread> threads_;
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std::unique_ptr<ProcessMemory> process_memory_;
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bool is_64_bit_;
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bool initialized_threads_;
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InitializationStateDcheck initialized_;
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DISALLOW_COPY_AND_ASSIGN(ProcessReader);
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};
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} // namespace crashpad
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#endif // CRASHPAD_SNAPSHOT_LINUX_PROCESS_READER_H_
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