feat: add explicit Stdout.flush() and remove automatic flush on System.write()

Remove the automatic fflush(stdout) call from the write() function in vm.c, which was causing gratuitous performance overhead on every System.write() invocation. Introduce a new Stdout class with a foreign static flush() method that delegates to fflush(stdout), giving users explicit control over when output is flushed. Update the io module registration in modules.c to include the Stdout class and bump MAX_CLASSES_PER_MODULE from 5 to 6. Add documentation for Stdout in doc/site/modules/io/stdout.markdown, update the io index and template to list the new class, and add flush() usage notes to the Stdin readByte() and readLine() docs. Implement the stdoutFlush() foreign function in io.c.

This commit is contained in:

Bob Nystrom

2017-10-09 14:16:05 +00:00

parent 8b2994b6e4

commit 5098c37491

9 changed files with 41 additions and 2 deletions

									
										doc/site/modules/io/index.markdown
									
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				@@ -6,3 +6,4 @@ Provides access to operating system streams and the file system.

				* [File](file.html)

				* [Stat](stat.html)

				* [Stdin](stdin.html)

				* [Stdout](stdout.html)