本文整理汇总了C++中DBC::c_getf_first方法的典型用法代码示例。如果您正苦于以下问题：C++ DBC::c_getf_first方法的具体用法？C++ DBC::c_getf_first怎么用？C++ DBC::c_getf_first使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DBC的用法示例。
在下文中一共展示了DBC::c_getf_first方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Init
int PerconaFTEngine::Init(const std::string& dir, const std::string& options)
{
Properties props;
parse_conf_content(options, props);
//parse config
conf_get_int64(props, "cache_size", g_perconaft_config.cache_size);
conf_get_uint32(props, "checkpoint_pool_threads", g_perconaft_config.checkpoint_pool_threads);
conf_get_uint32(props, "checkpoint_period", g_perconaft_config.checkpoint_period);
conf_get_uint32(props, "cleaner_period", g_perconaft_config.cleaner_period);
conf_get_uint32(props, "cleaner_iterations", g_perconaft_config.cleaner_iterations);
conf_get_bool(props, "evictor_enable_partial_eviction", g_perconaft_config.evictor_enable_partial_eviction);
std::string compression;
conf_get_string(props, "compression", compression);
if (compression == "none")
{
g_perconaft_config.compression = TOKU_NO_COMPRESSION;
}
else if (compression == "snappy" || compression.empty())
{
g_perconaft_config.compression = TOKU_SNAPPY_METHOD;
}
else if (compression == "zlib")
{
g_perconaft_config.compression = TOKU_ZLIB_METHOD;
}
else
{
ERROR_LOG("Invalid compression config:%s for PercanoFT.", compression.c_str());
return -1;
}
uint32 env_open_flags = DB_CREATE | DB_PRIVATE | DB_THREAD | DB_INIT_MPOOL | DB_INIT_TXN | DB_INIT_LOCK | DB_INIT_LOG | DB_RECOVER;
int env_open_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
db_env_create(&m_env, 0);
m_env->set_default_bt_compare(m_env, ardb_perconaft_compare);
m_env->set_errcall(m_env, _err_callback);
/*
* set env config
*/
uint32 cache_gsize = g_perconaft_config.cache_size >> 30;
uint32 cache_bytes = g_perconaft_config.cache_size % (1024 * 1024 * 1024);
m_env->set_cachesize(m_env, cache_gsize, cache_bytes, 1);
m_env->set_cachetable_pool_threads(m_env, g_perconaft_config.checkpoint_pool_threads);
m_env->checkpointing_set_period(m_env, g_perconaft_config.checkpoint_period);
m_env->cleaner_set_period(m_env, g_perconaft_config.cleaner_period);
m_env->cleaner_set_iterations(m_env, g_perconaft_config.cleaner_iterations);
m_env->evictor_set_enable_partial_eviction(m_env, g_perconaft_config.evictor_enable_partial_eviction);
int r = m_env->open(m_env, dir.c_str(), env_open_flags, env_open_mode);
CHECK_EXPR(r);
DataArray nss;
if (0 == r)
{
g_toku_env = m_env;
DB* db = m_env->get_db_for_directory(m_env);
if (NULL != db)
{
PerconaFTLocalContext& local_ctx = g_local_ctx.GetValue();
DB_TXN* txn = local_ctx.transc.Get();
DBC *c = NULL;
CHECK_EXPR(r = db->cursor(db, txn, &c, 0));
if (0 == r)
{
r = c->c_getf_first(c, 0, nil_callback, NULL);
}
while (0 == r)
{
DBT raw_key;
DBT raw_val;
memset(&raw_key, 0, sizeof(raw_key));
memset(&raw_val, 0, sizeof(raw_key));
if (0 == c->c_get(c, &raw_key, &raw_val, DB_CURRENT))
{
//std::string ns_str
Data ns;
ns.SetString((const char*) raw_key.data, false);
INFO_LOG("TokuFT directory db %s:%s", (const char* ) raw_key.data, (const char* ) raw_val.data);
nss.push_back(ns);
}
r = c->c_getf_next(c, 0, nil_callback, NULL);
}
if (NULL != c)
{
c->c_close(c);
}
local_ctx.transc.Release(true);
r = 0;
}
}
for (size_t i = 0; i < nss.size(); i++)
{
Context tmp;
GetFTDB(tmp, nss[i], true);
}
return ENGINE_ERR(r);
}