I think I can partly answer my own questions... It appears that the important MASTER bit needs to be up and running first. If I load my component after emc has started, it works. I'm currently using the POSTGUI_HALFILE to do this. Obviously my code wasn't working as I thought.
Some questions... Who is the master, and who is responsible for starting him? I have a usr component, with pins and parameters, that also wants to monitor the emc statuses. Is there any notifications that tell me the master is up and I can connect? Or should I just keep trying periodically to connect until successful? Thanks, Frank > -----Original Message----- > From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au] > Sent: Tuesday, 21 July 2009 6:50 PM > To: 'EMC developers' > Subject: Shared memory errors > > I've been writing a component, based on emclcd.cc and > shcom.cc. I think the code was working - it would start up > in a halrun, but now it fails to start with nml errors. > > I'm not sure how the shared memory works. Do I need to > allocate a new key(?) for my application? I just took > shcom.cc which uses "xemc". > > My component is also a usr component. Can it connect to the > share memory buffers? > > Can someone point me in the right direction? > > This is a snippet of the errors..... > > > > libnml/os_intf/_shm.c 206: shmget(1001(0x3E9),8192,0) failed: > (errno = 2): No such file or directory libnml/os_intf/_shm.c > 225: No shared memory buffer exists for this key and the > IPC_CREAT was not given. > shmctl: Invalid argument > libnml/cms/cms_cfg.cc 905: cms_config: > -4(CMS_NO_MASTER_ERROR: An error occured becouse the master > was not started.) Error occured during SHMEM create. > libnml/nml/nml.cc 368: NML: cms_config returned -1. > > ********************************************************** > * Current Directory = /home/frankt/emc2/config/sim > * > ********************************************************** > * BufferName = emcCommand > * BufferType = 0 > * ProcessName = xemc > * Configuration File = emc.nml > * CMS Status = -4 (CMS_NO_MASTER_ERROR: An error occured > becouse the master was not started.) > * Recent errors repeated: > NML: cms_config returned -1. > > shmget(1001(0x3E9),8192,0) failed: (errno = 2): No such file > or directory > > No shared memory buffer exists for this key and the IPC_CREAT > was not given. > > cms_config: -4(CMS_NO_MASTER_ERROR: An error occured becouse > the master was not started.) Error occ > * BufferLine: B emcCommand SHMEM localhost > 8192 0 0 1 16 1001 TCP=5005 xdr > * ProcessLine: P xemc emcCommand LOCAL > localhost W 0 10.0 0 10 > * Config File = emc.nml > * error_type = 0 (NML_NO_ERROR) > ************************************************************ > > libnml/os_intf/_shm.c 206: shmget(1002(0x3EA),10240,0) > failed: (errno = 2): No such file or directory > libnml/os_intf/_shm.c 225: No shared memory buffer exists for > this key and the IPC_CREAT was not given. > shmctl: Invalid argument > libnml/cms/cms_cfg.cc 905: cms_config: > -4(CMS_NO_MASTER_ERROR: An error occured becouse the master > was not started.) Error occured during SHMEM create. > libnml/nml/nml.cc 368: NML: cms_config returned -1. > > ********************************************************** > * BufferName = emcStatus > * BufferType = 0 > * ProcessName = xemc > * Configuration File = emc.nml > * CMS Status = -4 (CMS_NO_MASTER_ERROR: An error occured > becouse the master was not started.) > * Recent errors repeated: > ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
