Retrieve a data server variable
#include <ds.h> int ds_get( ds_t dsdes, const char* variable_name, const char* variable_data, size_t data_len );
libds
Use the -l ds option to qcc to link against this library.
The ds_get() function retrieves the data corresponding to variable_name from the data server dsdes, and places it in the buffer pointed to by variable_data.
The amount of data written to the buffer variable_data, or -1 if an error occurs (errno is set).
Safety: | |
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Cancellation point | Yes |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |