macos core text rasterizer #5
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enhancement
New feature or request
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wez
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Feb 22, 2019
This uses harfbuzz for shaping and thus can render both emoji and ligatures Refs: #5
quark-zju
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to quark-zju/wezterm
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Jan 6, 2020
I was running `hg log --config pager.pager=sp` and pressing space without
releasing it. After about 10k lines sp appears to deadlock. It seems sp uses a
single thread for both reading terminal events and sending wake events and it
sends too many wake events without reading the events.
Failing to write to the wake pipe due to EWOULDBLOCK does not seem to be a
problem - there are enough events in the pipe to wake up the other side.
Therefore let's just make wake_pipe_write nonblocking and treat EWOULDBLOCK as
a success.
Context: The stuck thread looks like:
#0 0x00007f32671ee237 in write () from /usr/lib/libc.so.6
wez#1 0x000055c466022823 in std::sys::unix::fd::FileDesc::write () at src/libstd/sys/unix/fd.rs:96
wez#2 std::sys::unix::net::Socket::write () at src/libstd/sys/unix/net.rs:276
wez#3 <&std::sys::unix::ext::net::UnixStream as std::io::Write>::write ()
at src/libstd/sys/unix/ext/net.rs:597
wez#4 <std::sys::unix::ext::net::UnixStream as std::io::Write>::write ()
at src/libstd/sys/unix/ext/net.rs:582
wez#5 0x000055c465d010a6 in termwiz::terminal::unix::UnixTerminalWaker::wake (self=0x7ffe6bd32de0)
at /home/quark/.cargo/git/checkouts/wezterm-6425bab852909cc8/ef1b836/termwiz/src/terminal/unix.rs:278
wez#6 0x000055c465a6c64b in streampager::event::EventSender::send_unique (self=0x7ffe6bd32dd0, event=...,
unique=0x7ffe6bd32de8) at src/event.rs:66
wez#7 0x000055c465a7e65a in streampager::display::start (term=..., term_caps=..., events=..., files=...,
error_files=..., progress=..., mode=streampager::config::FullScreenMode::Auto) at src/display.rs:295
wez#8 0x000055c465a453a7 in streampager::Pager::run (self=...) at src/lib.rs:171
wez#9 0x000055c465a0aced in sp::open_files (args=...) at src/bin/sp/main.rs:170
wez#10 0x000055c465a08e4f in sp::main () at src/bin/sp/main.rs:25
wez
pushed a commit
that referenced
this issue
Jan 6, 2020
I was running `hg log --config pager.pager=sp` and pressing space without
releasing it. After about 10k lines sp appears to deadlock. It seems sp uses a
single thread for both reading terminal events and sending wake events and it
sends too many wake events without reading the events.
Failing to write to the wake pipe due to EWOULDBLOCK does not seem to be a
problem - there are enough events in the pipe to wake up the other side.
Therefore let's just make wake_pipe_write nonblocking and treat EWOULDBLOCK as
a success.
Context: The stuck thread looks like:
#0 0x00007f32671ee237 in write () from /usr/lib/libc.so.6
#1 0x000055c466022823 in std::sys::unix::fd::FileDesc::write () at src/libstd/sys/unix/fd.rs:96
#2 std::sys::unix::net::Socket::write () at src/libstd/sys/unix/net.rs:276
#3 <&std::sys::unix::ext::net::UnixStream as std::io::Write>::write ()
at src/libstd/sys/unix/ext/net.rs:597
#4 <std::sys::unix::ext::net::UnixStream as std::io::Write>::write ()
at src/libstd/sys/unix/ext/net.rs:582
#5 0x000055c465d010a6 in termwiz::terminal::unix::UnixTerminalWaker::wake (self=0x7ffe6bd32de0)
at /home/quark/.cargo/git/checkouts/wezterm-6425bab852909cc8/ef1b836/termwiz/src/terminal/unix.rs:278
#6 0x000055c465a6c64b in streampager::event::EventSender::send_unique (self=0x7ffe6bd32dd0, event=...,
unique=0x7ffe6bd32de8) at src/event.rs:66
#7 0x000055c465a7e65a in streampager::display::start (term=..., term_caps=..., events=..., files=...,
error_files=..., progress=..., mode=streampager::config::FullScreenMode::Auto) at src/display.rs:295
#8 0x000055c465a453a7 in streampager::Pager::run (self=...) at src/lib.rs:171
#9 0x000055c465a0aced in sp::open_files (args=...) at src/bin/sp/main.rs:170
#10 0x000055c465a08e4f in sp::main () at src/bin/sp/main.rs:25
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This is the last big piece that I think is needed to unlock macOS support.
Implement the traits defined in
src/font/system.rsfor macOS; those include functions to enumerate fonts with fallback and to rasterize the glyph data.The text was updated successfully, but these errors were encountered: