16 Commits

Author SHA1 Message Date
Andrew Kelley
cf4bccf765
improvements targeted at improving async functions
* Reuse bytes of async function frames when non-async functions
   make `noasync` calls. This prevents explosive stack growth.
 * Zig now passes a stack size argument to the linker when linking ELF
   binaries. Linux ignores this value, but it is available as a program
   header called GNU_STACK. I prototyped some code that memory maps
   extra space to the stack using this program header, but there was
   still a problem when accessing stack memory very far down. Stack
   probing is needed or not working or something. I also prototyped
   using `@newStackCall` to call main and that does work around the
   issue but it also brings its own issues. That code is commented out
   for now in std/special/start.zig. I'm on a plane with no Internet,
   but I plan to consult with the musl community for advice when I get a
   chance.
 * Added `noasync` to a bunch of function calls in std.debug. It's very
   messy but it's a workaround that makes stack traces functional with
   evented I/O enabled. Eventually these will be cleaned up as the root
   bugs are found and fixed. Programs built in blocking mode are
   unaffected.
 * Lowered the default stack size of std.io.InStream (for the async
   version) to 1 MiB instead of 4. Until we figure out how to get
   choosing a stack size working (see 2nd bullet point above), 4 MiB
   tends to cause segfaults due to stack size running out, or usage of
   stack memory too far apart, or something like that.
 * Default thread stack size is bumped from 8 MiB to 16 to match the
   size we give for the main thread. It's planned to eventually remove
   this hard coded value and have Zig able to determine this value
   during semantic analysis, with call graph analysis and function
   pointer annotations and extern function annotations.
2019-09-12 01:40:58 -04:00
Andrew Kelley
67491a4222
disable runtime safety in std.io.InStream
Let's not be writing 0xaa in safe modes for upwards of 4 MiB for every
stream read. This is equivalent to the fact that we don't memset the
entire call stack to 0xaa for every function call.
2019-09-11 15:01:54 -04:00
Andrew Kelley
0489d06c24
make the std lib support event-based I/O
also add -fstack-report
2019-09-10 10:26:52 -04:00
Andrew Kelley
5cd4753bea add missing error code for DeleteFileW 2019-06-26 14:32:19 -04:00
Andrew Kelley
b735764898
different array literal syntax when inferring the size
old syntax:  []i32{1, 2, 3}
new syntax: [_]i32{1, 2, 3}

closes #1797
2019-06-09 19:26:32 -04:00
tgschultz
3eca5a42e6 fixed Deserializer.alignToByte() and added test coverage 2019-06-01 20:34:10 -04:00
Andrew Kelley
0c6ab61b22
tests passing on linux 2019-05-26 23:35:26 -04:00
Andrew Kelley
2b42e910bf
behavior tests passing on Linux 2019-05-26 19:56:37 -04:00
Andrew Kelley
ca6debcaf4
starting to fix the regressions 2019-05-26 18:32:44 -04:00
Andrew Kelley
17b0166e00
do Jay's suggestion with posix/os API naming & layout 2019-05-26 18:32:44 -04:00
Marc Tiehuis
c4d1597f50 Mmap debug info on linux
Closes #907.
2019-05-13 20:04:25 +12:00
LemonBoy
fbcc559cdb Make io offsets/sizes u64 instead of usize
Decouple the concepts of address-space size and file size.

Closes #637
2019-04-28 18:07:40 +02:00
Andrew Kelley
17ffe166c2
add preliminary windows support to std.io.COutStream 2019-04-25 00:24:25 -04:00
Andrew Kelley
976080462c
translate-c: a little closer to self-hosted implementation 2019-04-25 00:06:54 -04:00
Andrew Kelley
e402455704
rename std lib files to new convention 2019-03-02 16:46:04 -05:00
Andrew Kelley
a40d160a5c
introduce std.io.SeekableStream
Relevant #764

dwarf debug info is modified to use this instead of std.os.File
directly to make it easier for bare metal projects to take advantage
of debug info parsing
2018-12-02 18:36:18 -05:00