status_t send_msg_x( port_id hPort, uint32 nCode, const void *pBuffer, int nSize, bigtime_t nTimeOut )
{
MsgPort_s *psPort;
MessageNode_s *psNode;
int nError;
psNode = kmalloc( sizeof( MessageNode_s ) + nSize, MEMF_KERNEL | MEMF_LOCKED | MEMF_OKTOFAIL );
if ( psNode == NULL )
{
printk( "Error: send_msg_x() failed to alloc message buffer\n" );
return ( -ENOMEM );
}
psNode->mn_psNext = NULL;
psNode->mn_nCode = nCode;
if ( NULL != pBuffer )
{
memcpy( psNode + 1, pBuffer, nSize );
psNode->mn_nSize = nSize;
}
else
{
psNode->mn_nSize = 0;
}
lock_mutex( g_hPortListSema, true );
psPort = get_port_from_handle( hPort );
if ( psPort == NULL )
{
printk( "Error: send_msg_x() attempt to send to invalid port %d\n", hPort );
nError = -EINVAL;
goto error;
}
if ( NULL == psPort->mp_psFirstMsg )
{
psPort->mp_psFirstMsg = psNode;
psPort->mp_psLastMsg = psNode;
}
else
{
kassertw( NULL != psPort->mp_psLastMsg );
psPort->mp_psLastMsg->mn_psNext = psNode;
psPort->mp_psLastMsg = psNode;
}
psPort->mp_nCount++;
UNLOCK( psPort->mp_hSyncSema );
unlock_mutex( g_hPortListSema );
return ( 0 );
error:
kfree( psNode );
unlock_mutex( g_hPortListSema );
return ( nError );
}
static VALUE
rb_queue_pop(int argc, VALUE *argv, VALUE self)
{
Queue *queue;
int should_block;
VALUE result;
Data_Get_Struct(self, Queue, queue);
if (argc == 0) {
should_block = 1;
} else if (argc == 1) {
should_block = !RTEST(argv[0]);
} else {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1)", argc);
}
lock_mutex(&queue->mutex);
if (!queue->values.entries && !should_block) {
unlock_mutex(&queue->mutex);
rb_raise(private_eThreadError, "queue empty");
}
while (!queue->values.entries) {
wait_condvar(&queue->value_available, &queue->mutex);
}
result = shift_list(&queue->values);
if (queue->capacity && queue->values.size < queue->capacity) {
signal_condvar(&queue->space_available);
}
unlock_mutex(&queue->mutex);
return result;
}
static OFDPE
delete_ether_device_from_switch( const uint32_t port_no ) {
assert( port_no > 0 && port_no <= OFPP_MAX );
if ( !lock_mutex( &mutex ) ) {
return ERROR_LOCK;
}
switch_port *port = delete_switch_port( port_no );
if ( port == NULL ) {
return unlock_mutex( &mutex ) ? ERROR_INVALID_PARAMETER : ERROR_UNLOCK;
}
notify_port_status( port, OFPPR_DELETE );
if ( port->device != NULL ) {
delete_ether_device( port->device );
}
xfree( port );
if ( !unlock_mutex( &mutex ) ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
status_t sys_delete_port( port_id hPort )
{
Process_s *psProc = CURRENT_PROC;
MsgPort_s *psPort;
int nError;
lock_mutex( g_hPortListSema, true );
psPort = get_port_from_handle( hPort );
if ( psPort == NULL )
{
printk( "Warning : Attempt to delete invalid message port %d\n", hPort );
nError = -EINVAL;
goto error;
}
if ( psPort->mp_hOwner != psProc->tc_hProcID )
{
printk( "Warning: Attempt to delete message port not owned by us(%d) but by %d\n", psProc->tc_hProcID, psPort->mp_hOwner );
nError = -EACCES;
goto error;
}
do_delete_port( psProc, psPort );
unlock_mutex( g_hPortListSema );
return ( 0 );
error:
unlock_mutex( g_hPortListSema );
return ( nError );
}
CP_HIDDEN void cpi_wait_mutex(cpi_mutex_t *mutex) {
DWORD self = GetCurrentThreadId();
assert(mutex != NULL);
lock_mutex(mutex->os_mutex);
if (mutex->lock_count > 0
&& self == mutex->os_thread) {
int lc = mutex->lock_count;
// Release mutex
mutex->lock_count = 0;
mutex->num_wait_threads++;
set_event(mutex->os_cond_lock);
unlock_mutex(mutex->os_mutex);
// Wait for signal
wait_for_event(mutex->os_cond_wake);
// Reset wake signal if last one waking up
lock_mutex(mutex->os_mutex);
if (--mutex->num_wait_threads == 0) {
reset_event(mutex->os_cond_wake);
}
// Re-acquire mutex and restore lock count for this thread
lock_mutex_holding(mutex);
mutex->lock_count = lc;
} else {
cpi_fatalf(_("Internal C-Pluff error: Unauthorized attempt at waiting on a mutex."));
}
unlock_mutex(mutex->os_mutex);
}
char*
CoinMempool::alloc()
{
lock_mutex();
if (first_free_ == NULL) {
unlock_mutex();
char* block = allocate_new_block();
lock_mutex();
#if (COIN_MEMPOOL_SAVE_BLOCKHEADS==1)
// see if we can record another block head. If not, then resize
// block_heads
if (max_block_num_ == block_num_) {
max_block_num_ = 2 * block_num_ + 10;
char** old_block_heads = block_heads_;
block_heads_ = (char**)malloc(max_block_num_ * sizeof(char*));
CoinMemcpyN( old_block_heads,block_num_,block_heads_);
free(old_block_heads);
}
// save the new block
block_heads_[block_num_++] = block;
#endif
// link in the new block
*(char**)(block+((last_block_size_-1)*entry_size_)) = first_free_;
first_free_ = block;
}
char* p = first_free_;
first_free_ = *(char**)p;
unlock_mutex();
return p;
}
/*****************************************************************************
* NAME:
* DESC:
* NOTE:
* SEE ALSO:
****************************************************************************/
status_t make_port_private( port_id hPort )
{
MsgPort_s *psPort;
PublicPort_s *psPubPort;
int nError = -EINVAL;
psPort = get_port_from_handle( hPort );
if ( psPort == NULL )
{
printk( "Error: make_port_private() called for invalid message port %d\n", hPort );
nError = -EINVAL;
goto error;
}
lock_mutex( g_hPubPortListSema, true );
psPubPort = g_psPubPortListHead;
while ( psPubPort != NULL )
{
if ( psPubPort->pp_hPortID == hPort )
{
if( psPubPort->pp_psPrev )
psPubPort->pp_psPrev->pp_psNext = psPubPort->pp_psNext;
if( psPubPort->pp_psNext )
psPubPort->pp_psNext->pp_psPrev = psPubPort->pp_psPrev;
else
g_psPubPortListHead = psPubPort->pp_psPrev;
kfree( psPubPort );
lock_mutex( g_hPortListSema, true );
psPort->mp_nFlags &= ~MSG_PORT_PUBLIC;
unlock_mutex( g_hPortListSema );
nError = EOK;
break;
}
psPubPort = psPubPort->pp_psPrev;
}
unlock_mutex( g_hPubPortListSema );
if ( nError == -EINVAL )
printk( "Error: make_port_private() called with a non public port id %d\n", hPort );
error:
return ( nError );
}
/*****************************************************************************
* NAME:
* DESC:
* NOTE:
* SEE ALSO:
****************************************************************************/
status_t make_port_public( port_id hPort )
{
MsgPort_s *psPort;
PublicPort_s *psPubPort;
int nError = EOK;
psPort = get_port_from_handle( hPort );
if ( psPort == NULL )
{
printk( "Error: make_port_public() called with invalid message port %d\n", hPort );
nError = -EINVAL;
goto error;
}
/* Ensure that the port name does not already exist in the public ports list */
if ( do_find_port( psPort->mp_zName ) >= 0 )
{
printk( "make_port_public() : Attempt to make a duplicate port \"%s\" public\n", psPort->mp_zName );
nError = -EEXIST;
goto error;
}
psPubPort = kmalloc( sizeof( PublicPort_s ), MEMF_KERNEL | MEMF_LOCKED | MEMF_OKTOFAIL );
if ( psPubPort == NULL )
{
printk( "Error: make_port_public() failed to alloc port struct\n" );
nError = -ENOMEM;
goto error;
}
psPubPort->pp_hPortID = psPort->mp_hPortID;
psPubPort->pp_pzName = psPort->mp_zName;
psPubPort->pp_psNext = NULL;
psPubPort->pp_psPrev = g_psPubPortListHead;
lock_mutex( g_hPubPortListSema, true );
if ( NULL != g_psPubPortListHead )
g_psPubPortListHead->pp_psNext = psPubPort;
g_psPubPortListHead = psPubPort;
unlock_mutex( g_hPubPortListSema );
lock_mutex( g_hPortListSema, true );
psPort->mp_nFlags |= MSG_PORT_PUBLIC;
unlock_mutex( g_hPortListSema );
error:
return ( nError );
}
port_id sys_create_port( const char *const pzName, int nMaxCount )
{
int nError;
MsgPort_s *psPort;
lock_mutex( g_hPortListSema, true );
psPort = kmalloc( sizeof( MsgPort_s ), MEMF_CLEAR | MEMF_KERNEL | MEMF_LOCKED | MEMF_OKTOFAIL );
if ( psPort == NULL )
{
nError = -ENOMEM;
goto error1;
}
psPort->mp_hSyncSema = create_semaphore( "port_sync", 0, 0 );
if ( psPort->mp_hSyncSema < 0 )
{
printk( "Error: sys_create_port() failed to allocate semaphore\n" );
nError = psPort->mp_hSyncSema;
goto error2;
}
psPort->mp_hPortID = MArray_Insert( &g_sMsgPorts, psPort, false );
if ( psPort->mp_hPortID < 0 )
{
printk( "Failed to alloc descriptor for msg port %s\n", pzName );
nError = psPort->mp_hPortID;
goto error3;
}
psPort->mp_nMaxCount = nMaxCount;
psPort->mp_nFlags = 0;
strncpy_from_user( psPort->mp_zName, pzName, OS_NAME_LENGTH );
psPort->mp_zName[OS_NAME_LENGTH - 1] = '\0';
link_port( CURRENT_PROC, psPort );
unlock_mutex( g_hPortListSema );
atomic_inc( &g_sSysBase.ex_nMessagePortCount );
return ( psPort->mp_hPortID );
error3:
delete_semaphore( psPort->mp_hSyncSema );
error2:
kfree( psPort );
error1:
unlock_mutex( g_hPortListSema );
return ( nError );
}
OFDPE
get_port_description( const uint32_t port_no, port_description **descriptions, uint32_t *n_ports ) {
assert( port_no > 0 || port_no == OFPP_ALL );
assert( descriptions != NULL );
assert( n_ports != NULL );
if ( !lock_mutex( &mutex ) ) {
return ERROR_LOCK;
}
*n_ports = 0;
*descriptions = NULL;
list_element *ports = NULL;
if ( port_no != OFPP_ALL ) {
switch_port *port = lookup_switch_port( port_no );
if ( ports == NULL ) {
return unlock_mutex( &mutex ) ? OFDPE_SUCCESS : ERROR_UNLOCK;
}
create_list( &ports );
append_to_tail( &ports, port );
}
else {
ports = get_all_switch_ports();
if ( ports == NULL ) {
return unlock_mutex( &mutex ) ? OFDPE_SUCCESS : ERROR_UNLOCK;
}
}
*n_ports = ( uint32_t ) list_length_of( ports );
size_t length = ( *n_ports ) * sizeof( port_description );
*descriptions = xmalloc( length );
memset( *descriptions, 0, length );
port_description *description = *descriptions;
for ( list_element *e = ports; e != NULL; e = e->next ) {
assert( e->data != NULL );
switch_port *port = e->data;
assert( port->device != NULL );
// FIXME: we assume that "port_description" is the same structure as "struct ofp_port".
switch_port_to_ofp_port( description, port );
description++;
}
if ( !unlock_mutex( &mutex ) ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
_Noreturn void exit_server(int retcode) {
int err;
interrupted = true;
cleanup_ipc();
lock_mutex(&counter_mutex);
while(alive_threads > 0)
if(0 != (err = pthread_cond_wait(&finish_cond, &counter_mutex)))
serv_error("Unable to wait on finish_cond: %d", err);
unlock_mutex(&counter_mutex);
// mutexes, conditional variables and rwlocks are not destroyed,
// because the main thread may possiby be blocked on it while handling
// the signal and destroying mutexes/conds/rwlocks while they are used
// results is undefined behaviour. Nevertheless, from now on we are sure
// to have just one thread
if(results)
for(int i = 0; i < L; ++i)
free((void *) results[i]);
free((void*) results);
free((void*) stations);
exit(retcode ? EXIT_FAILURE : EXIT_SUCCESS);
}
static void local_error_msg (int loglevel,
const char *lib,
const char *fmt,
va_list ap)
{
#if _WIN32 && _DEBUG
char msg[512];
if (initialized) init_local_mutex();
lock_mutex();
sprintf(msg, "%s:", lib);
OutputDebugString(msg);
va_start(ap, fmt);
_vsnprintf(msg, 512, fmt, ap);
va_end(ap);
OutputDebugString(msg);
OutputDebugString("\n");
unlock_mutex();
#else
struct timeval thistime;
char buffer[80];
long int msec;
gettimeofday(&thistime, NULL);
strftime(buffer, sizeof(buffer), "%X", localtime(&thistime.tv_sec));
msec = thistime.tv_usec / 1000;
printf("%s.%03ld-%s-%d: ",
buffer,
msec,
lib,
loglevel);
vprintf(fmt, ap);
printf("\n");
#endif
}
void util_mutex_unlock(void)
{
if(unlock_mutex)
unlock_mutex(mutex_hnd);
return;
}
void track::ins_row(unsigned short int which) {
event *e,*deleted=NULL,*n=NULL;
if (lock_mutex(song->hEditMutex, EDIT_LOCK_TIMEOUT)) {
e = get_event(length-1);
if (e) {
n = (event *)e->next_event;
deleted = e;
delete e;
}
e = event_list;
if (e == deleted) {
e = event_list = n;
}
while(e) {
if (e->row>=which)
e->row++;
if (deleted) {
if (e->next_event == deleted)
e->next_event = n;
}
e = (event *)e->next_event;
}
file_changed++;
unlock_mutex(song->hEditMutex);
}
}
OFDPE
finalize_port_manager() {
bool ret = lock_mutex( &mutex );
if ( !ret ) {
return ERROR_LOCK;
}
delete_timer_event_safe( update_switch_port_status_and_stats, NULL );
finalize_switch_port();
config.max_send_queue_length = 0;
config.max_recv_queue_length = 0;
ret = unlock_mutex( &mutex );
if ( !ret ) {
return ERROR_UNLOCK;
}
ret = finalize_mutex( &mutex );
if ( !ret ) {
return ERROR_FINALIZE_MUTEX;
}
return OFDPE_SUCCESS;
}
OFDPE
init_port_manager( const size_t max_send_queue_length, const size_t max_recv_queue_length ) {
if ( max_send_queue_length == 0 || max_recv_queue_length == 0 ) {
error( "Failed to initialize port manager. Maximum queue length must be greater than zero "
"( max_send_queue = %u, max_recv_queue = %u ).", max_send_queue_length, max_recv_queue_length );
return ERROR_INVALID_PARAMETER;
}
bool ret = init_mutex( &mutex );
if ( !ret ) {
return ERROR_INIT_MUTEX;
}
ret = lock_mutex( &mutex );
if ( !ret ) {
return ERROR_LOCK;
}
config.max_send_queue_length = max_send_queue_length;
config.max_recv_queue_length = max_recv_queue_length;
init_switch_port();
add_periodic_event_callback_safe( PORT_STATUS_UPDATE_INTERVAL, update_switch_port_status_and_stats, NULL );
ret = unlock_mutex( &mutex );
if ( !ret ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}
static VALUE
rb_sized_queue_max_set(VALUE self, VALUE value)
{
Queue *queue;
unsigned long new_capacity;
unsigned long difference;
Data_Get_Struct(self, Queue, queue);
new_capacity = NUM2ULONG(value);
if (new_capacity < 1) {
rb_raise(rb_eArgError, "value must be positive");
}
lock_mutex(&queue->mutex);
if (queue->capacity && new_capacity > queue->capacity) {
difference = new_capacity - queue->capacity;
} else {
difference = 0;
}
queue->capacity = new_capacity;
for (; difference > 0; --difference) {
signal_condvar(&queue->space_available);
}
unlock_mutex(&queue->mutex);
return self;
}
void Spider_Thread_Pool::push_work(void* sock)
{
lock_mutex();
m_work_queue.push(sock);
post_semaphore();
unlock_mutex();
}
/*****************************************************************************
* NAME:
* DESC:
* NOTE:
* SEE ALSO:
****************************************************************************/
port_id do_find_port( const char *pzPortname )
{
PublicPort_s *psPubPort;
port_id hPort = -1;
if ( NULL == g_psPubPortListHead )
goto error;
lock_mutex( g_hPubPortListSema, true );
psPubPort = g_psPubPortListHead;
while ( psPubPort != NULL )
{
if ( !strcmp( psPubPort->pp_pzName, pzPortname ) )
{
hPort = psPubPort->pp_hPortID;
break;
}
psPubPort = psPubPort->pp_psPrev;
}
unlock_mutex( g_hPubPortListSema );
error:
return ( hPort );
}
status_t sys_get_next_port_info( port_info * psInfo )
{
port_info sInfo;
MsgPort_s *psPort;
port_id hPort;
int nError;
if ( memcpy_from_user( &hPort, &psInfo->pi_port_id, sizeof( hPort ) ) < 0 )
{
return ( -EFAULT );
}
lock_mutex( g_hPortListSema, true );
hPort = MArray_GetNextIndex( &g_sMsgPorts, hPort );
psPort = get_port_from_handle( hPort );
if ( psPort == NULL )
{
nError = 0;
goto error;
}
do_get_port_info( psPort, &sInfo );
nError = 1;
if ( memcpy_to_user( psInfo, &sInfo, sizeof( sInfo ) ) < 0 )
{
nError = -EFAULT;
}
error:
unlock_mutex( g_hPortListSema );
return ( nError );
}
status_t sys_get_port_info( port_id hPort, port_info * psInfo )
{
port_info sInfo;
MsgPort_s *psPort;
int nError;
lock_mutex( g_hPortListSema, true );
if ( hPort == -1 )
{
hPort = MArray_GetNextIndex( &g_sMsgPorts, -1 );
}
psPort = get_port_from_handle( hPort );
if ( psPort == NULL )
{
nError = -EINVAL;
goto error;
}
do_get_port_info( psPort, &sInfo );
nError = 0;
if ( memcpy_to_user( psInfo, &sInfo, sizeof( sInfo ) ) < 0 )
{
nError = -EFAULT;
}
error:
unlock_mutex( g_hPortListSema );
return ( nError );
}
static void do_delete_port( Process_s *psProc, MsgPort_s *psPort )
{
if ( psPort->mp_nFlags & MSG_PORT_PUBLIC )
{
unlock_mutex( g_hPortListSema );
make_port_private( psPort->mp_hPortID );
lock_mutex( g_hPortListSema, true );
}
MArray_Remove( &g_sMsgPorts, psPort->mp_hPortID );
delete_semaphore( psPort->mp_hSyncSema );
while ( psPort->mp_psFirstMsg != NULL )
{
MessageNode_s *psMsg = psPort->mp_psFirstMsg;
psPort->mp_psFirstMsg = psMsg->mn_psNext;
kfree( psMsg );
}
if ( psProc != NULL )
{
unlink_port( psProc, psPort );
}
kfree( psPort );
atomic_dec( &g_sSysBase.ex_nMessagePortCount );
}
inline void dealloc(char *p)
{
char** pp = (char**)p;
lock_mutex();
*pp = first_free_;
first_free_ = p;
unlock_mutex();
}
CP_HIDDEN int cpi_is_mutex_locked(cpi_mutex_t *mutex) {
int locked;
lock_mutex(mutex->os_mutex);
locked = (mutex->lock_count != 0);
unlock_mutex(mutex->os_mutex);
return locked;
}
void exit_free_ports( Process_s *psProc )
{
lock_mutex( g_hPortListSema, true );
while ( psProc->pr_psFirstPort != NULL )
{
do_delete_port( psProc, psProc->pr_psFirstPort );
}
unlock_mutex( g_hPortListSema );
}
void enqueue_actor(struct Work_Queue *work_queue, struct Actor *actor) {
actor->next = NULL;
lock_mutex(work_queue->mutex_lock);
{
work_queue->tail->next = actor;
work_queue->tail = actor;
}
unlock_mutex(work_queue->mutex_lock);
}
static void
update_switch_port_status_and_stats( void *user_data ) {
if ( !lock_mutex( &mutex ) ) {
return;
}
foreach_switch_port( update_switch_port_status_and_stats_walker, user_data );
unlock_mutex( &mutex );
}
_Noreturn void exit_thread(void) {
int err;
lock_mutex(&counter_mutex);
--alive_threads;
if(0 == alive_threads) {
unlock_mutex(&counter_mutex);
if(0 != (err = pthread_cond_signal(&finish_cond)))
serv_error("Unable to signal on finish_cond: %d", err);
}
else
unlock_mutex(&counter_mutex);
// Notify the server that it may spawn another thread
if(0 != (err = pthread_cond_signal(&slot_cond)))
serv_error("Unable to signal on slot_cond: %d", err);
pthread_exit(NULL);
}
void *malloc(size_t size)
{
void *res;
if (lock_mutex() == FALSE)
return (NULL);
res = malloc_intern(size);
if (unlock_mutex() == FALSE)
return (NULL);
return (res);
}
static OFDPE
add_ether_device_as_switch_port( const char *device, uint32_t port_no ) {
assert( device != NULL );
assert( port_no <= OFPP_MAX );
if ( !lock_mutex( &mutex ) ) {
return ERROR_LOCK;
}
if ( port_no == 0 ) {
bool ret = get_free_switch_port_no( &port_no );
if ( !ret ) {
error( "No switch port number available ( device = %s ).", device );
return unlock_mutex( &mutex ) ? ERROR_OFDPE_PORT_MOD_FAILED_BAD_PORT : ERROR_UNLOCK;
}
}
bool ret = switch_port_exists( port_no );
if ( ret ) {
error( "Specified port already exists ( device = %s, port_no = %u ).", device, port_no );
return unlock_mutex( &mutex ) ? ERROR_OFDPE_PORT_MOD_FAILED_BAD_PORT : ERROR_UNLOCK;
}
info( "Adding an Ethernet device as a switch port ( device = %s, port_no = %u ).", device, port_no );
switch_port *port = add_switch_port( device, port_no, config.max_send_queue_length, config.max_recv_queue_length );
if ( port == NULL ) {
error( "Failed to add an Ethernet device as a switch port ( device = %s, port_no = %u ).", device, port_no );
return unlock_mutex( &mutex ) ? ERROR_OFDPE_PORT_MOD_FAILED_EPERM : ERROR_UNLOCK;
}
set_frame_received_handler( port->device, handle_frame_received_on_switch_port, port );
notify_port_status( port, OFPPR_ADD );
if ( !unlock_mutex( &mutex ) ) {
return ERROR_UNLOCK;
}
return OFDPE_SUCCESS;
}