relay_open9
Create a new relay channel
Usage
struct rchan * relay_open(const char * base_filename, struct dentry * parent, size_t subbuf_size, size_t n_subbufs, struct rchan_callbacks * cb, void * private_data);
Arguments
base_filename
base name of files to create, NULL for buffering only
parent
dentry of parent directory, NULL for root directory or buffer
subbuf_size
size of sub-buffers
n_subbufs
number of sub-buffers
cb
client callback functions
private_data
user-defined data
Overview
Returns channel pointer if successful, NULL otherwise.
Creates a channel buffer for each cpu using the sizes and attributes specified. The created channel buffer files will be named base_filename0...base_filenameN-1. File permissions will be S_IRUSR.
If opening a buffer (parent = NULL) that you later wish to register in a filesystem, call relay_late_setup_files once the parent dentry is available.
Releases
6 releases since Debian 4.0 (Etch); the text changed 5 times.