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M:N threading

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* add std.atomic.QueueMpsc.isEmpty
 * make std.debug.global_allocator thread-safe
 * std.event.Loop: now you have to choose between
   - initSingleThreaded
   - initMultiThreaded
 * std.event.Loop multiplexes coroutines onto kernel threads
 * Remove std.event.Loop.stop. Instead the event loop run() function
   returns once there are no pending coroutines.
 * fix crash in ir.cpp for calling methods under some conditions
 * small progress self-hosted compiler, analyzing top level declarations
 * Introduce std.event.Lock for synchronizing coroutines
 * introduce std.event.Locked(T) for data that only 1 coroutine should
   modify at once.
 * make the self hosted compiler use multi threaded event loop
 * make std.heap.DirectAllocator thread-safe

See #174

TODO:
 * call sched_getaffinity instead of hard coding thread pool size 4
 * support for Windows and MacOS
 * #1194
 * #1197
This commit is contained in:
Andrew Kelley
2018-07-05 15:09:02 -04:00
parent d8295c1889
commit eb326e1553
10 changed files with 833 additions and 114 deletions
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8
std/os/linux/index.zig
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@@ -523,6 +523,10 @@ pub const CLONE_NEWPID = 0x20000000;
pub const CLONE_NEWNET = 0x40000000;
pub const CLONE_IO = 0x80000000;
pub const EFD_SEMAPHORE = 1;
pub const EFD_CLOEXEC = O_CLOEXEC;
pub const EFD_NONBLOCK = O_NONBLOCK;
pub const MS_RDONLY = 1;
pub const MS_NOSUID = 2;
pub const MS_NODEV = 4;
@@ -1221,6 +1225,10 @@ pub fn epoll_wait(epoll_fd: i32, events: [*]epoll_event, maxevents: u32, timeout
return syscall4(SYS_epoll_wait, @intCast(usize, epoll_fd), @ptrToInt(events), @intCast(usize, maxevents), @intCast(usize, timeout));
}
pub fn eventfd(count: u32, flags: u32) usize {
return syscall2(SYS_eventfd2, count, flags);
}
pub fn timerfd_create(clockid: i32, flags: u32) usize {
return syscall2(SYS_timerfd_create, @intCast(usize, clockid), @intCast(usize, flags));
}