C++ (Cpp) dlopen_pluginの例

コード例 #1

ファイル: vcfplugin.c プロジェクト: adeelmahmood/alignmentportal

static int load_plugin(args_t *args, const char *fname, int exit_on_error, plugin_t *plugin)
{
    plugin->name = strdup(fname);

    plugin->handle = dlopen_plugin(args, fname);
    if ( !plugin->handle )
    {
        if ( exit_on_error )
        {
            print_plugin_usage_hint();
            error("Could not load \"%s\".\n\n", fname);
        }
        return -1;
    }

    dlerror();
    plugin->init = (dl_init_f) dlsym(plugin->handle, "init");
    char *ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    plugin->version = (dl_version_f) dlsym(plugin->handle, "version");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    plugin->about = (dl_about_f) dlsym(plugin->handle, "about");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    plugin->usage = (dl_about_f) dlsym(plugin->handle, "usage");
    ret = dlerror();
    if ( ret )
        plugin->usage = plugin->about;

    plugin->process = (dl_process_f) dlsym(plugin->handle, "process");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    plugin->destroy = (dl_destroy_f) dlsym(plugin->handle, "destroy");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    return 0;
}

コード例 #2

ファイル: vcfplugin.c プロジェクト: humanlongevity/bcftools

static int load_plugin(args_t *args, const char *fname, int exit_on_error, plugin_t *plugin)
{
    plugin->name = strdup(fname);

    plugin->handle = dlopen_plugin(args, fname);
    if ( !plugin->handle )
    {
        if ( exit_on_error )
        {
            print_plugin_usage_hint();
            error("Could not load \"%s\".\n\n", fname);
        }
        return -1;
    }

    dlerror();
    plugin->init = (dl_init_f) dlsym(plugin->handle, "init");
    char *ret = dlerror();
    if ( ret )
        plugin->init = NULL;
    else if ( args->verbose ) fprintf(stderr,"\tinit     .. ok\n");

    plugin->run = (dl_run_f) dlsym(plugin->handle, "run");
    ret = dlerror();
    if ( ret )
        plugin->run = NULL;
    else if ( args->verbose ) fprintf(stderr,"\trun      .. ok\n");

    if ( !plugin->init && !plugin->run )
    {
        if ( exit_on_error ) error("Could not initialize %s, neither run or init found \n", plugin->name);
        else if ( args->verbose ) fprintf(stderr,"\tinit/run .. not found\n");
        return -1;
    }

    plugin->version = (dl_version_f) dlsym(plugin->handle, "version");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s, version string not found\n", plugin->name);
        else if ( args->verbose ) fprintf(stderr,"\tversion  .. not found\n");
        return -1;
    }

    plugin->about = (dl_about_f) dlsym(plugin->handle, "about");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    plugin->usage = (dl_about_f) dlsym(plugin->handle, "usage");
    ret = dlerror();
    if ( ret )
        plugin->usage = plugin->about;

    if ( plugin->run ) return 0;

    plugin->process = (dl_process_f) dlsym(plugin->handle, "process");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    plugin->destroy = (dl_destroy_f) dlsym(plugin->handle, "destroy");
    ret = dlerror();
    if ( ret )
    {
        if ( exit_on_error ) error("Could not initialize %s: %s\n", plugin->name, ret);
        return -1;
    }

    return 0;
}