[llvm-commits] [PATCH] Allow per-thread re-direction of outs()/errs()
clattner at apple.com
Thu May 31 20:06:31 PDT 2012
On May 31, 2012, at 2:39 PM, Justin Holewinski wrote:
> The attached patch add the ability to programmatically re-direct outs()/errs() to an arbitrary raw_ostream instance, maintaining the raw_ostream instances in a stack structure so clients can push/pop streams at will. The stack is also maintained in thread-local storage, so different threads can re-direct individually. This allows for two use cases:
> 1. Compilers can attach custom streams to outs()/errs() to intercept output from LLVM without needing to play with STDOUT/STDERR.
> 2. Compilers can receive LLVM output from different threads individually, instead of having all diagnostics dumped to a single stream.
This isn't the right approach. Nothing in the library part of the compiler should be hard coding a stream to write to. What are you trying to accomplish?
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