/**
* Cleans up after system_Init() and system_Configure().
*/
void system_End(void)
{
if( tidIPCFirst == _gettid())
{
HPIPE hpipe;
ULONG ulAction;
ULONG cbActual;
ULONG rc;
do
{
rc = DosOpen( VLC_IPC_PIPE, &hpipe, &ulAction, 0, 0,
OPEN_ACTION_OPEN_IF_EXISTS,
OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYREADWRITE |
OPEN_FLAGS_FAIL_ON_ERROR,
NULL );
if( rc == ERROR_PIPE_BUSY )
DosWaitNPipe( VLC_IPC_PIPE, -1 );
else if( rc )
DosSleep( 1 );
} while( rc );
/* Ask for IPCHelper to quit */
ULONG ulCmd = IPC_CMD_QUIT;
DosWrite( hpipe, &ulCmd, sizeof( ulCmd ), &cbActual );
DosClose( hpipe );
TID tid = tidIPCHelper;
DosWaitThread( &tid, DCWW_WAIT );
}
}
/*@ XNamedPipeClient::WaitForServer(char *name, ULONG timeOut)
@group misc
@remarks Wait for a server
@parameters <t 'ø' c=2>
øchar * øname of the requested pipe (without leading '\\PIPE\\')
øULONG øhow long to wait
øchar * øname of the server-maschine if the pipe is not on the local maschine<BR>(default is NULL)
</t>
*/
LONG XNamedPipeClient::WaitForServer(char *name, ULONG timeOut, char * server)
{
XString n;
if(server)
{
n += "\\";
n += server;
}
n += "\\PIPE\\";
n += name;
return DosWaitNPipe((PSZ) (char*) n, timeOut);
}
static VOID pipeOpen( HPIPE *phpipe )
{
ULONG ulAction;
APIRET rc;
do
{
rc = DosOpen( m_szPipeName, phpipe, &ulAction, 0, 0,
OPEN_ACTION_OPEN_IF_EXISTS,
OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYREADWRITE |
OPEN_FLAGS_FAIL_ON_ERROR,
NULL );
if( rc == ERROR_PIPE_BUSY )
while( DosWaitNPipe( m_szPipeName, -1 ) == ERROR_INTERRUPT );
else if( rc )
DosSleep( 1 );
} while( rc );
}
void system_Configure( libvlc_int_t *p_this, int i_argc, const char *const ppsz_argv[] )
{
if( var_InheritBool( p_this, "high-priority" ) )
{
if( !DosSetPriority( PRTYS_PROCESS, PRTYC_REGULAR, PRTYD_MAXIMUM, 0 ) )
{
msg_Dbg( p_this, "raised process priority" );
}
else
{
msg_Dbg( p_this, "could not raise process priority" );
}
}
if( var_InheritBool( p_this, "one-instance" )
|| ( var_InheritBool( p_this, "one-instance-when-started-from-file" )
&& var_InheritBool( p_this, "started-from-file" ) ) )
{
HPIPE hpipe;
ULONG ulAction;
ULONG rc;
msg_Info( p_this, "one instance mode ENABLED");
/* Use a named pipe to check if another instance is already running */
for(;;)
{
rc = DosOpen( VLC_IPC_PIPE, &hpipe, &ulAction, 0, 0,
OPEN_ACTION_OPEN_IF_EXISTS,
OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYREADWRITE |
OPEN_FLAGS_FAIL_ON_ERROR,
NULL );
if( rc == ERROR_PIPE_BUSY )
DosWaitNPipe( VLC_IPC_PIPE, -1 );
else
break;
}
if( rc )
{
rc = DosCreateNPipe( VLC_IPC_PIPE, &hpipeIPC,
NP_ACCESS_DUPLEX,
NP_WAIT | NP_TYPE_MESSAGE |
NP_READMODE_MESSAGE | 0x01,
32768, 32768, 0 );
if( rc )
{
/* Failed to create a named pipe. Just ignore the option and
* go on as normal. */
msg_Err( p_this, "one instance mode DISABLED "
"(a named pipe couldn't be created)" );
return;
}
/* We are the 1st instance. */
/* Save the tid of the first instance */
tidIPCFirst = _gettid();
/* Run the helper thread */
tidIPCHelper = _beginthread( IPCHelperThread, NULL, 1024 * 1024,
p_this );
if( tidIPCHelper == -1 )
{
msg_Err( p_this, "one instance mode DISABLED "
"(IPC helper thread couldn't be created)");
tidIPCFirst = -1;
}
}
else
{
/* Another instance is running */
ULONG ulCmd = var_InheritBool( p_this, "playlist-enqueue") ?
IPC_CMD_ENQUEUE : IPC_CMD_GO;
ULONG cbActual;
/* Write a command */
DosWrite( hpipe, &ulCmd, sizeof( ulCmd ), &cbActual );
/* We assume that the remaining parameters are filenames
* and their input options */
/* Write a count of arguments */
DosWrite( hpipe, &i_argc, sizeof( i_argc ), &cbActual );
for( int i_opt = 0; i_opt < i_argc; i_opt++ )
{
/* We need to resolve relative paths in this instance */
char *mrl;
if( strstr( ppsz_argv[ i_opt ], "://" ))
mrl = strdup( ppsz_argv[ i_opt ] );
else
mrl = vlc_path2uri( ppsz_argv[ i_opt ], NULL );
if( !mrl )
mrl = ( char * )ppsz_argv[ i_opt ];
size_t i_len = strlen( mrl ) + 1;
/* Write a length of an argument */
DosWrite( hpipe, &i_len, sizeof( i_len ), &cbActual );
/* Write an argument */
DosWrite( hpipe, mrl, i_len, &cbActual );
if( mrl != ppsz_argv[ i_opt ])
free( mrl );
}
/* Close a named pipe of a client side */
DosClose( hpipe );
/* Bye bye */
system_End();
exit( 0 );
}
}
}
