Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f0216a8a authored by Rajeev Kumar's avatar Rajeev Kumar
Browse files

Functions to log stats log from LMKD. 

Bug: 72177881
Test: Manual
Change-Id: I0f618013e242fabae785b62eb39f9bfbcaac16da
parent 6d6cff4c

lmkd/Android.bp

+12 −0
Original line number Diff line number Diff line
@@ -18,3 +18,15 @@ cc_binary { 
        },

    },

}



cc_library_shared {

    name: "libstatslogc",

    srcs: ["statslog.c"],

    cflags: [

        "-Wall",

        "-Werror",

    ],

    shared_libs: [

        "liblog",

    ],

}

lmkd/statslog.c

0 → 100644
+100 −0
Original line number Diff line number Diff line 
/*

 *  Copyright 2018 Google, Inc

 *

 *  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 <assert.h>

#include <errno.h>

#include <log/log_event_list.h>

#include <log/log_id.h>



/**

 * Logs the change in LMKD state which is used as start/stop boundaries for logging

 * LMK_KILL_OCCURRED event.

 * Code: LMK_STATE_CHANGED = 54

 */

int

stats_write_lmk_state_changed(android_log_context ctx, int32_t code, int32_t state) {

    assert(ctx != NULL);

    int ret = -EINVAL;

    if (!ctx) {

        return ret;

    }



    if ((ret = android_log_write_int32(ctx, code)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int32(ctx, state)) < 0) {

        return ret;

    }

    return ret;

}



/**

 * Logs the event when LMKD kills a process to reduce memory pressure.

 * Code: LMK_KILL_OCCURRED = 51

 */

int

stats_write_lmk_kill_occurred(android_log_context ctx, int32_t code, int32_t uid,

                              char const* process_name, int32_t oom_score, int64_t pgfault,

                              int64_t pgmajfault, int64_t rss_in_bytes, int64_t cache_in_bytes,

                              int64_t swap_in_bytes) {

    assert(ctx != NULL);

    int ret = -EINVAL;

    if (!ctx) {

        return ret;

    }



    if ((ret = android_log_write_int32(ctx, code)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int32(ctx, uid)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_string8(ctx, (process_name == NULL) ? "" : process_name)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int32(ctx, oom_score)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int64(ctx, pgfault)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int64(ctx, pgmajfault)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int64(ctx, rss_in_bytes)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int64(ctx, cache_in_bytes)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_int64(ctx, swap_in_bytes)) < 0) {

        return ret;

    }



    if ((ret = android_log_write_list(ctx, LOG_ID_STATS)) < 0) {

        return ret;

    }

    return ret;

}

lmkd/statslog.h

0 → 100644
+39 −0
Original line number Diff line number Diff line 
/*

 *  Copyright 2018 Google, Inc

 *

 *  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.

 */



#pragma once



#include <sys/cdefs.h>

__BEGIN_DECLS



/**

 * Logs the change in LMKD state which is used as start/stop boundaries for logging

 * LMK_KILL_OCCURRED event.

 * Code: LMK_STATE_CHANGED = 54

 */

int

stats_write_lmk_state_changed(android_log_context ctx, int32_t code, int32_t state);



/**

 * Logs the event when LMKD kills a process to reduce memory pressure.

 * Code: LMK_KILL_OCCURRED = 51

 */

int

stats_write_lmk_kill_occurred(android_log_context ctx, int32_t code, int32_t uid,

                              char const* process_name, int32_t oom_score, int64_t pgfault,

                              int64_t pgmajfault, int64_t rss_in_bytes, int64_t cache_in_bytes,

                              int64_t swap_in_bytes);

__END_DECLS