void gov_ugc(bool background_off_from_background_on, int os_primitives_bound)
{
#ifdef _WIN32
#else
USemaphore sem;
UShMem shm;
UMMap map;
char buf[1024];
if (background_off_from_background_on) return;
d_printf1("Starting CLEANUP\n");
SEMAPHORE_CLEANUP(CHARISMA_GOVERNOR_IS_READY);
SEMAPHORE_CLEANUP(SE_EVENT_LOG_SEMAPHORES_NAME);
SHAREDMEM_CLEANUP(SE_EVENT_LOG_SHARED_MEMORY_NAME, sizeof(event_log_msg));
SHAREDMEM_CLEANUP(GOVERNOR_SHARED_MEMORY_NAME, sizeof(gov_config_struct));
FILE_MAPPING_CLEANUP(SEDNA_GLOBAL_MEMORY_MAPPING);
/// releasing semaphores depending on sessions
for (int i = 0; i < MAX_SESSIONS_NUMBER; i++)
{
SEMAPHORE_CLEANUP2(SM_TO_VMM_CALLBACK_SEM1_BASE_STR(i, buf, 1024), SM_TO_VMM_CALLBACK_SEM1_BASE_STR);
SEMAPHORE_CLEANUP2(SM_TO_VMM_CALLBACK_SEM2_BASE_STR(i, buf, 1024), SM_TO_VMM_CALLBACK_SEM2_BASE_STR);
SEMAPHORE_CLEANUP2(SEDNA_TRANSACTION_LOCK(i, buf, 1024), SEDNA_TRANSACTION_LOCK);
}
d_printf1("CLEANUP completed\n\n");
#endif
}
void sm_ugc(bool background_off_from_background_on, int db_id, int os_primitives_bound)
{
#ifdef _WIN32
#else
USemaphore sem;
UShMem shm;
UMMap map;
UEvent ev;
char buf[1024];
if (background_off_from_background_on) return;
d_printf1("Starting CLEANUP\n");
SEMAPHORE_CLEANUP(CHARISMA_SM_WAIT_FOR_SHUTDOWN);
SEMAPHORE_CLEANUP(VMM_SM_SEMAPHORE_STR);
SEMAPHORE_CLEANUP(VMM_SM_EXCLUSIVE_MODE_SEM_STR);
SEMAPHORE_CLEANUP(CATALOG_NAMETABLE_SEMAPHORE_STR);
SEMAPHORE_CLEANUP(CATALOG_MASTER_SEMAPHORE_STR);
// SEMAPHORE_CLEANUP(METADATA_SEMAPHORE_STR);
// SEMAPHORE_CLEANUP(INDEX_SEMAPHORE_STR);
#ifdef SE_ENABLE_FTSEARCH
//SEMAPHORE_CLEANUP(FT_INDEX_SEMAPHORE_STR);
#endif
#ifdef SE_ENABLE_TRIGGERS
//SEMAPHORE_CLEANUP(TRIGGER_SEMAPHORE_STR);
#endif
SHAREDMEM_CLEANUP(CHARISMA_SM_CALLBACK_SHARED_MEMORY_NAME, 8);
SHAREDMEM_CLEANUP(CHARISMA_LOGICAL_LOG_SHARED_MEM_NAME, 0/*CHARISMA_LOGICAL_LOG_SHARED_MEM_SIZE*/);
SHAREDMEM_CLEANUP(SEDNA_LFS_SHARED_MEM_NAME, 0);
//SEMAPHORE_CLEANUP(CHARISMA_CHECKPOINT_SEM);
SEMAPHORE_CLEANUP(SEDNA_TRNS_FINISHED);
SEMAPHORE_CLEANUP(CHARISMA_LOGICAL_LOG_PROTECTION_SEM_NAME);
SEMAPHORE_CLEANUP(CHARISMA_DB_RECOVERED_BY_LOGICAL_LOG);
//SEMAPHORE_CLEANUP(CHARISMA_WAIT_FOR_CHECKPOINT);
SEMAPHORE_CLEANUP(SEDNA_CHECKPOINT_FINISHED_SEM);
SEMAPHORE_CLEANUP(SEDNA_LOCK_MANAGER_SEM);
SEMAPHORE_CLEANUP(SEDNA_LFS_SEM_NAME);
EVENT_CLEANUP(SNAPSHOT_CHECKPOINT_EVENT);
EVENT_CLEANUP(TRY_ADVANCE_SNAPSHOT_EVENT);
SHAREDMEM_CLEANUP(CHARISMA_LRU_STAMP_SHARED_MEMORY_NAME, 8);
SEMAPHORE_CLEANUP(CHARISMA_SYNC_TRN_IDS_TABLE);
//SEMAPHORE_CLEANUP(CHARISMA_SM_SMSD_ID);
SEMAPHORE_CLEANUP(CHARISMA_SM_IS_READY);
SSMMsg::ipc_cleanup(CHARISMA_SSMMSG_SM_ID(db_id, buf, 1024));
FILE_MAPPING_CLEANUP(CHARISMA_BUFFER_SHARED_MEMORY_NAME);
d_printf1("CLEANUP completed\n\n");
// std::string buf_dir = SEDNA_DATA + std::string("/data/") + db_name + std::string("_files/buf");
#endif
}
void nid_print(xptr node)
{
t_nid the_nid = nid_get_nid(node);
t_prefix p = nid_get_prefix(the_nid);
d_printf1("(");
for (int i=0; i<p.size; i++)
d_printf2("%d=",(int)(unsigned char)p.prefix[i]);
d_printf1(")");
nid_free(p.prefix);
}
U_THREAD_PROC(pping_server_cli_thread_proc, arg)
{
if (uThreadBlockAllSignals(NULL) != 0)
d_printf1("Failed to block signals for SSMMsg_server_proc");
pping_server *pps = ((pping_serv_arg*)arg)->pps;
USOCKET sock = ((pping_serv_arg*)arg)->sock;
int component = ((pping_serv_arg*)arg)->pps->component;
delete ((pping_serv_arg*)arg);
char c = PPING_DISCONNECT_MSG;
while (true)
{
if (urecv(sock, &c, sizeof(c), NULL) != sizeof(c)) goto sys_failure;
if (c == PPING_DISCONNECT_MSG) break;
#if (defined(EL_DEBUG) && (EL_DEBUG == 1))
if (c == PPING_PROC_EXCEPTION_MSG)
{
if (client_exception_handler(sock, pps) != 1) return 0;
continue;
}
#endif
if (c != PPING_KEEP_ALIVE_MSG) goto sys_failure;
}
//d_printf1("pping_server's client is closed\n");
if (uclose_socket(sock, NULL) == U_SOCKET_ERROR) goto sys_failure;
return 0;
sys_failure:
sedna_soft_fault("One of SEDNA processes is down", component);
return 0;
}
int USemaphoreCreate(USemaphore *sem, int init_value, int max_value, global_name name, USECURITY_ATTRIBUTES* sa, sys_call_error_fun fun)
#ifdef _WIN32
{
char buf[128];
const char *wName = UWinIPCNameFromGlobalName(name,buf,128);
*sem = CreateSemaphore(sa, init_value, max_value, wName);
if (*sem == NULL)
{
sys_call_error("CreateSemaphore");
return 1;
}
else
{
if (GetLastError() == ERROR_ALREADY_EXISTS)
{
d_printf1("CreateSemaphore: already exists\n");
return 1;
}
}
return 0;
}
U_THREAD_PROC(pping_client_thread_proc, arg)
{
if (uThreadBlockAllSignals(NULL) != 0)
d_printf1("Failed to block signals for pping_client_thread_proc");
pping_client *ppc = (pping_client*)arg;
char c = PPING_KEEP_ALIVE_MSG;
while (true)
{
if (ppc->stop_keep_alive) return 0;
int res = usend(ppc->sock, &c, sizeof(c), NULL);
if (res != sizeof(c) && !ppc->stop_keep_alive) {
sedna_soft_fault("SEDNA GOVERNOR is down", ppc->component);
}
/* se_stop -hard has been called? */
if(ppc->signaled_flag != NULL &&
GOV_HEADER_GLOBAL_PTR != NULL &&
GOV_HEADER_GLOBAL_PTR -> is_server_stop == SE_STOP_HARD)
{
*(ppc->signaled_flag) = true;
}
UUnnamedSemaphoreDownTimeout(&(ppc->sem), 1000, NULL);
if(ppc->timeout)
{
if (!ppc->counter && !ppc->reset_flag) {
*(ppc->signaled_flag) = true;
ppc->counter = ppc->timeout;
}
if(ppc->reset_flag)
{
ppc->counter = ppc->timeout;
if(ppc->signaled_flag) *(ppc->signaled_flag) = false;
ppc->reset_flag = false;
}
(ppc->counter)--;
}
#if (defined(EL_DEBUG) && (EL_DEBUG == 1))
#define SENDVAR(v) if (usend(ppc->sock, (char*)&v, sizeof(v), NULL) != sizeof(v)) continue;
#ifdef _WIN32
if (ppc->exceptPtrs)
{
//TODO: do something if usend/urecv fails or get wrong msg
char cc = PPING_PROC_EXCEPTION_MSG;
DWORD proc_id = GetCurrentProcessId();
if (usend(ppc->sock, &cc, sizeof(cc), NULL) != sizeof(cc))
{
ppc->exceptPtrs = NULL;
continue;
}
SENDVAR(proc_id)
SENDVAR(ppc->component);
SENDVAR(ppc->except_thread_id);
SENDVAR(ppc->exceptPtrs);
if (urecv(ppc->sock, &cc, sizeof(cc), NULL) != sizeof(cc))
{
ppc->exceptPtrs = NULL;
continue;
}
if (cc != PPING_PROC_EXCEPTION_MSG)
{
ppc->exceptPtrs = NULL;
continue;
}
if (ppc->stacktrace_fh != U_INVALID_FD)
{
if (StackTraceInit() != 0)
{
StackTraceWriteFd(ppc->exceptPtrs->ContextRecord, (intptr_t)ppc->stacktrace_fh, 9999, 0);
StackTraceDeinit();
}
uCloseFile(ppc->stacktrace_fh, NULL);
}
ppc->exceptPtrs = NULL;
}
#endif
#undef SENDVAR
#endif
}
return 0;
}
/* Single threaded version of pping server.
* Uses select() to create connections and serve
* previously created as well.
*
* TODO: read all buffer at once
* TODO: better failures diagnostric
* TODO: place accept+uNotInherit into a critical section to prevent
* descriptors inheritance on fork
*
*/
U_THREAD_PROC(pping_server_lstn_thread_proc_st, arg)
{
if (uThreadBlockAllSignals(NULL) != 0)
d_printf1("Failed to block signals for pping server thread.");
U_SSET allset, rset;
pping_server *pps = (pping_server*)arg;
int res;
char c = PPING_DISCONNECT_MSG;
bool maxfd_valid = true;
USOCKET client_sock, maxfd, i;
U_SSET_ZERO(&allset);
U_SSET_SET(pps->sock, &allset);
maxfd = pps->sock + 1;
while (true)
{
rset = allset;
res = uselect_read_arr(&rset, maxfd, NULL, NULL);
if (res == U_SOCKET_ERROR) {
SYS_FAILURE_SERVER("Failure in pping server (select() call failed).");
}
/* Iterate through ready to read client descriptors */
for (i = 0; i < maxfd; i++)
{
if(U_SSET_ISSET(i, &rset) && i != pps->sock)
{
res = urecv(i, &c, sizeof(c), NULL);
if( res != sizeof(c) ) {
SYS_FAILURE_SERVER("Failure in pping server (recv() call failed, one of the clients may be down).");
}
if (c == PPING_DISCONNECT_MSG)
{
U_SSET_CLR(i, &allset);
if(uclose_socket(i, NULL) == U_SOCKET_ERROR)
SYS_FAILURE_SERVER("Failure in pping server (cannot close a socket descriptor on disconnect).");
if ( maxfd-1 == i )
maxfd_valid = false;
}
#if (defined(EL_DEBUG) && (EL_DEBUG == 1))
else if (c == PPING_PROC_EXCEPTION_MSG) {
if (client_exception_handler(i, pps) != 1) return 0;
}
#endif
else if (c != PPING_KEEP_ALIVE_MSG)
SYS_FAILURE_SERVER("Failure in pping server (unexpected message from client).");
}
}
/* Renew maximum descriptor number */
if( !maxfd_valid )
{
for (i = maxfd-1; i >= 0; i--)
{
if(U_SSET_ISSET(i, &allset))
{
maxfd = i + 1;
maxfd_valid = true;
break;
}
}
}
/* Create a new connection */
if (U_SSET_ISSET(pps->sock, &rset))
{
client_sock = uaccept(pps->sock, NULL);
if(client_sock == U_INVALID_SOCKET)
SYS_FAILURE_SERVER("Failure in pping server (accept() call failed).");
U_SSET_SET(client_sock, &allset);
if (client_sock > maxfd-1) {
maxfd = client_sock + 1;
}
/* Check if governor wants to shutdown us */
if (pps->close_lstn_thread)
{
for (i = 0; i < maxfd; i++)
{
if(U_SSET_ISSET(i, &allset) &&
i != pps->sock &&
uclose_socket(i, NULL) == U_SOCKET_ERROR)
SYS_FAILURE_SERVER("Failure in pping server (cannot close a socket descriptor).");
}
break;
}
/* Make the client descriptor unheritable */
if (uNotInheritDescriptor(UHANDLE(client_sock), NULL) != 0)
SYS_FAILURE_SERVER("Failure in pping server (cannot make a socket descriptor unheritable).");
}
}
return 0;
}
