Merge changes from topic 'lshal' am: 7e894fc9

        "libhidltransport",

        "libhidltransport",

    ],

    ],

    srcs: [

    srcs: [

        "lshal.cpp"

        "Lshal.cpp"

    ],

    ],

}

}

/*

 * Copyright (C) 2016 The Android Open Source Project

 *

 * 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.

 */

#ifndef FRAMEWORK_NATIVE_CMDS_LSHAL_LSHAL_H_

#define FRAMEWORK_NATIVE_CMDS_LSHAL_LSHAL_H_

#include <stdint.h>

#include <iostream>

#include <string>

#include <vector>

#include <android/hidl/manager/1.0/IServiceManager.h>

#include "TableEntry.h"

namespace android {

namespace lshal {

enum : unsigned int {

    OK                                      = 0,

    USAGE                                   = 1 << 0,

    NO_BINDERIZED_MANAGER                   = 1 << 1,

    NO_PASSTHROUGH_MANAGER                  = 1 << 2,

    DUMP_BINDERIZED_ERROR                   = 1 << 3,

    DUMP_PASSTHROUGH_ERROR                  = 1 << 4,

    DUMP_ALL_LIBS_ERROR                     = 1 << 5,

};

using Status = unsigned int;

class Lshal {

public:

    int main(int argc, char **argv);

private:

    Status parseArgs(int argc, char **argv);

    Status fetch();

    void postprocess();

    void dump() const;

    void usage() const;

    void putEntry(TableEntry &&entry);

    Status fetchPassthrough(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    Status fetchBinderized(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    Status fetchAllLibraries(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);

    bool getReferencedPids(

        pid_t serverPid, std::map<uint64_t, Pids> *objects) const;

    void printLine(

            const std::string &interfaceName,

            const std::string &transport, const std::string &server,

            const std::string &serverCmdline,

            const std::string &address, const std::string &clients,

            const std::string &clientCmdlines) const ;

    // Return /proc/{pid}/cmdline if it exists, else empty string.

    const std::string &getCmdline(pid_t pid);

    // Call getCmdline on all pid in pids. If it returns empty string, the process might

    // have died, and the pid is removed from pids.

    void removeDeadProcesses(Pids *pids);

    Table mTable{};

    std::ostream &mErr = std::cerr;

    std::ostream &mOut = std::cout;

    TableEntryCompare mSortColumn = nullptr;

    TableEntrySelect mSelectedColumns = 0;

    // If true, cmdlines will be printed instead of pid.

    bool mEnableCmdlines;

    // If an entry does not exist, need to ask /proc/{pid}/cmdline to get it.

    // If an entry exist but is an empty string, process might have died.

    // If an entry exist and not empty, it contains the cached content of /proc/{pid}/cmdline.

    std::map<pid_t, std::string> mCmdlines;

};

}  // namespace lshal

}  // namespace android

#endif  // FRAMEWORK_NATIVE_CMDS_LSHAL_LSHAL_H_