Maximum Limit of String

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Wed, 08/01/2018 - 05:16
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aakash_sehgal
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Maximum Limit of String

I am interfacing ROS2 with native RTI DDS through RTI Connector for python.

In ROS2, the strings are unbounded and dynamically allocated.

But in RTI, if I give the type as default, then it limits it to 255 bytes.

For that I used the variable. stringMaxLength="2147483647"

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Wed, 08/01/2018 - 15:41
neil-rti
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Yes -- that is correct for setting up 'unbounded' support.

The value 2147483647 (0x7FFFFFFF) is interpreted to mean "allocate memory to the size of the sample, and free the memory when finished" -- rather than a one-time allocation of a fixed-size buffer.

See the CoreLibrariesUserManual section under "Unbounded Built-In Types" for more details.

 

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