Change company name to "rev.ng Labs Srl" in all license headers
to reflect changed company name and legal status
Add missing license headers to files that didn't have one
This library provides a thin locking wrapper around clang::tooling
invocations.
It should be used instead of performing direct clang::tooling
invocations by all programs that use revng-c and may run more than one
ClangTool concurrently.
This is necessary because clang::tooling internally uses llvm's cl::opt
for parsing command line options.
cl::opt uses a global variable for the parser under the hood so parsing
two command lines concurrently is not safe.
Similarly, cl::opt typically uses global variables to hold options, so
it is not safe to execute a ClangTool concurrently to another tool
that is parsing a new set of options, because there might be race
conditions between threads reading and writing the same options at the
same time.
The new library introduces a thin locking layer so that the end-user
does not need to know or worry about these details.
Giacomo Vercesi