How to optimize memory in a C program?
The following simple tricks in C are dedicated for program memory space optimization . These are particularly useful for embedded systems programmers dealing with low-cost 8-bit microcontrollers with limited flash memory.
Why are small strings stored in contiguous memory?
This is also very good when strings are stored in a std::vector, as small strings are basically stored in contiguous memory locations, and modern CPUs love blasting contiguous data in memory! Optimizations similar to the SSO can be applied also to other data structures, for example: to vectors.
What does the small string optimization in C + + mean?
In several implementations, including the Visual C++’s one, the STL string classes are empowered by an interesting optimization: The Small String Optimization (SSO). What does that mean?
How is one copy of a string stored in memory?
When you initialise your string, make a call to string.Intern () with your string. Every subsequent call with the same string will use the same reference in memory. So if you have 1000 AAAAs, only 1 copy of AAAA is stored in memory. Thanks for contributing an answer to Stack Overflow!
Is it possible to optimize the use of strings?
For instance, an article in the Google Chromium developer forum stated that std::string accounted for half of all calls to the memory manager in Chromium. Any frequently executed code that manipulates strings is fertile ground for optimization.
This is also very good when strings are stored in a std::vector, as small strings are basically stored in contiguous memory locations, and modern CPUs love blasting contiguous data in memory! Optimizations similar to the SSO can be applied also to other data structures, for example: to vectors.
In several implementations, including the Visual C++’s one, the STL string classes are empowered by an interesting optimization: The Small String Optimization (SSO). What does that mean?
How is the assignment operator optimized in C + +?
If strings are implemented using the copy-on-write idiom, then the assignment operator performs an efficient pointer copy and increments the reference count. If strings have a non–shared buffer implementation, then the assignment operator must copy the contents of the temporary string.