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This class implements a generic memoization object: It takes a function as a constructor argument and memoizes it. Every time the function gets invoked through the Memoizer object the result gets saved in the internal cache, ready to be retrieved next time an invokation is made with the same arguments. Example usage: int fibonacci(int n); Memoizer fibonacci_memo(fibonacci); fibonacci_memo(5); There are two ways to discard a memoization 1) Delete the Memoizer object 2) Use the Memoizer::flush method In some cases there is little or no reason to discard a memoization (like in the fibonacci example, where fibonacci(k) always returns the same value for the same input k) The memoizer could be used in more complex cases, where a change in the global state affects the output of the function, which effectively invalidates the cached results. It is up to the client to understand when memoization is no longer valid and to flush the result cache as a consequence. Change-Id: I6cf496b2aef5a66f5375a627165b2cb2e3a1bfc2 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/59149 Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Daniel Carvalho <odanrc@yahoo.com.br> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Reviewed-by: Richard Cooper <richard.cooper@arm.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of these tools. Once you have all dependencies resolved, type 'scons build/<CONFIG>/gem5.opt' where CONFIG is one of the options in build_opts like ARM, NULL, MIPS, POWER, SPARC, X86, Garnet_standalone, etc. This will build an optimized version of the gem5 binary (gem5.opt) with the the specified configuration. See http://www.gem5.org/documentation/general_docs/building for more details and options. The main source tree includes these subdirectories: - build_opts: pre-made default configurations for gem5 - build_tools: tools used internally by gem5's build process. - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - include: include files for use in other programs - site_scons: modular components of the build system - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you may need compiled system firmware, kernel binaries and one or more disk images, depending on gem5's configuration and what type of workload you're trying to run. Many of those resources can be downloaded from http://resources.gem5.org, and/or from the git repository here: https://gem5.googlesource.com/public/gem5-resources/ If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.