darshan-lustre.c 2.39 KB
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/*
 * Copyright (C) 2015 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
 */

#define _XOPEN_SOURCE 500
#define _GNU_SOURCE

#include "darshan-runtime-config.h"
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <stdlib.h>
#include <assert.h>
#include <pthread.h>

#include "uthash.h"

#include "darshan.h"
#include "darshan-dynamic.h"

struct lustre_record_runtime
{
    struct darshan_lustre_record *record;
    UT_hash_handle hlink;
};

struct lustre_runtime
{
    struct lustre_record_runtime *record_runtime_array;
    struct darshan_lustre_record *record_array;
    int record_array_size;
    int record_array_ndx;
    struct lustre_record_runtime *record_hash;
};

static struct lustre_runtime *lustre_runtime = NULL;
static pthread_mutex_t lustre_runtime_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
static int instrumentation_disabled = 0;
static int my_rank = -1;

static void lustre_begin_shutdown(void);
static void lustre_get_output_data(MPI_Comm mod_comm, darshan_record_id *shared_recs,
    int shared_rec_count, void **lustre_buf, int *lustre_buf_sz);
static void lustre_shutdown(void);

#define LUSTRE_LOCK() pthread_mutex_lock(&lustre_runtime_mutex)
#define LUSTRE_UNLOCK() pthread_mutex_unlock(&lustre_runtime_mutex)

void darshan_instrument_lustre_file(char *filepath)
{

    /* TODO: implement gathering of lustre data */

    return;
}

/**************************************************************************
 * Functions exported by Lustre module for coordinating with darshan-core *
 **************************************************************************/

static void lustre_begin_shutdown(void)
{
    assert(lustre_runtime);

    LUSTRE_LOCK();
    /* disable further instrumentation while Darshan shuts down */
    instrumentation_disabled = 1;
    LUSTRE_UNLOCK();

    return;
}

static void lustre_get_output_data(
    MPI_Comm mod_comm,
    darshan_record_id *shared_recs,
    int shared_rec_count,
    void **lustre_buf,
    int *lustre_buf_sz)
{
    assert(lustre_runtime);

    /* TODO: reduce shared lustre records, and set ouptut buffers */

    return;
}

static void lustre_shutdown(void)
{
    assert(lustre_runtime);

    /* TODO: free data structures */

    lustre_runtime = NULL;

    return;
}

/*
 * Local variables:
 *  c-indent-level: 4
 *  c-basic-offset: 4
 * End:
 *
 * vim: ts=8 sts=4 sw=4 expandtab
 */