In my LD_PRELOAD library written in rust, I generate trace out to a trace file for debugging and some file system tracking data into a tacker.file. The LD_PRELOAD will be used across a very large build to track all its dependency and I with some changes run into core dumps or hangs of the main prog…

The equivalent Rust code with no locks or allocations is: let fp = File::create("output.txt").unwrap(); write!(&fp, "My formatted {} message {}", "Hello World", 100);

Formatting and writing to a file without malloc or locks

help

mbrubeck December 4, 2020, 5:28am 9

That's correct. You can use a BufWriter<File> or a LineWriter<File> instead if you want buffered I/O.

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Formatting and writing to a file without malloc or locks

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