f3370295b7
Of the 8 static mutexes that are currently in-use by the compiler and its libraries, 4 of them are currently used for one-time initialization. The unforunate side effect of using a static mutex is that the mutex is leaked. This primitive should provide the basis for efficiently keeping track of one-time initialization as well as ensuring that it does not leak the internal mutex that is used. I have chosen to put this in libstd because libstd is currently making use of a static initialization mutex (rt::local_ptr), but I can also see a more refined version of this type being suitable to initialize FFI bindings (such as initializing LLVM and initializing winsock networking on windows). I also intend on adding "helper threads" to libnative, and those will greatly benefit from a simple "once" primitive rather than always reinventing the wheel by using mutexes and bools. I would much rather see this primitive built on a mutex that blocks green threads appropriately, but that does not exist at this time, so it does not belong outside of `std::unstable`. |
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| .. | ||
| dynamic_lib.rs | ||
| finally.rs | ||
| intrinsics.rs | ||
| lang.rs | ||
| mod.rs | ||
| mutex.rs | ||
| raw.rs | ||
| simd.rs | ||
| stack.rs | ||
| sync.rs | ||