Merge "Remove process_name.c"

/*

 * Copyright (C) 2008 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.

 */

/**

 * Gives the current process a name.

 */

#ifndef __PROCESS_NAME_H

#define __PROCESS_NAME_H

#ifdef __cplusplus

extern "C" {

#endif

/**

 * Sets the current process name.

 *

 * Warning: This leaks a string every time you call it. Use judiciously!

 */

void set_process_name(const char* process_name);

/** Gets the current process name. */

const char* get_process_name(void);

#ifdef __cplusplus

}

#endif

#endif /* __PROCESS_NAME_H */ 

        "load_file.c",

        "native_handle.c",

        "open_memstream.c",

        "process_name.c",

        "record_stream.c",

        "sched_policy.c",

        "sockets.cpp",

/*

 * Copyright (C) 2008 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.

 */

#include <fcntl.h>

#include <stdlib.h>

#include <string.h>

#if defined(__linux__)

#include <sys/prctl.h>

#endif

#include <sys/stat.h>

#include <sys/types.h>

#include <unistd.h>

#include <cutils/process_name.h>

#if defined(__ANDROID__)

#include <cutils/properties.h>

#endif

#define PROCESS_NAME_DEVICE "/sys/qemu_trace/process_name"

static const char* process_name = "unknown";

#if defined(__ANDROID__)

static int running_in_emulator = -1;

#endif

void set_process_name(const char* new_name) {

#if defined(__ANDROID__)

    char  propBuf[PROPERTY_VALUE_MAX];

#endif

    if (new_name == NULL) {

        return;

    }

    // We never free the old name. Someone else could be using it.

    int len = strlen(new_name);

    char* copy = (char*) malloc(len + 1);

    strcpy(copy, new_name);

    process_name = (const char*) copy;

#if defined(__linux__)

    if (len < 16) {

        prctl(PR_SET_NAME, (unsigned long) new_name, 0, 0, 0);

    } else {

        prctl(PR_SET_NAME, (unsigned long) new_name + len - 15, 0, 0, 0);

    }

#endif

#if defined(__ANDROID__)

    // If we know we are not running in the emulator, then return.

    if (running_in_emulator == 0) {

        return;

    }

    // If the "running_in_emulator" variable has not been initialized,

    // then do it now.

    if (running_in_emulator == -1) {

        property_get("ro.kernel.qemu", propBuf, "");

        if (propBuf[0] == '1') {

            running_in_emulator = 1;

        } else {

            running_in_emulator = 0;

            return;

        }

    }

    // If the emulator was started with the "-trace file" command line option

    // then we want to record the process name in the trace even if we are

    // not currently tracing instructions (so that we will know the process

    // name when we do start tracing instructions).  We do not need to execute

    // this code if we are just running in the emulator without the "-trace"

    // command line option, but we don't know that here and this function

    // isn't called frequently enough to bother optimizing that case.

    int fd = open(PROCESS_NAME_DEVICE, O_RDWR);

    if (fd < 0)

        return;

    write(fd, process_name, strlen(process_name) + 1);

    close(fd);

#endif

}

const char* get_process_name(void) {

    return process_name;

}