try_emplace() will return the existing entry in the map if it
exists already, so we don't need to perform a find() and then
try_emplace(). We can just use try_emplace() by itself.
Given the calls are all internal, we can store the function pointers
directly and call them with the this pointer instead of indirecting
through std::bind and std::function.
Adds a new OutputSocket config option that when set will force all logs
to go through a socket.
This allows us to avoid polluting the guest application's output through
a socket instead of a file. Alleviating the issue of a file output
overwriting when multiple applications are ran.
Previously, the host thunk would seemingly succeed to load even when
the corresponding host library could not be loaded, leading to obscure
crashes later throughout execution.
Namespace-scope variables declared as const or constexpr have internal
linkage by default.
Also makes the output a little more consistent in terms of const/static
ordering.
We can create the table at compile-time, since we already have the
function labels available ahead of time.
This also centralizes the op table in one read-only location
In quite a few places we have a raw primitive to represent an IR node's
ID. This can make reading some bits of the API (or the passes) a little
confusing to take in, since there's no meaningful type name for some
data structure members.
We can provide an alias that communicates this directly to the reader.
This also has the nice benefit of providing a single point of definition
for node IDs which can allow for easier changes in the future (e.g.
making Node IDs strongly-typed etc).
In the case of storing a thread state without a guest signal then this
would be filled with garbage data.
This would then cause a crash on thread restart.
Only happens using gdbstub
Migrates lingering instances of the old logger over to fmt where
applicable. This allows removing some of the old defines and functions.
The only remaining usages of the printf-based variant of the logger is
in Tests/LinuxSyscalls/Syscalls.cpp for the strace handling.
The CompileService was spinning up with the incoming thread mask and
then setting the mask once running.
Instead set the mask, which the thread inherits, then set it back once
it is created.
If a SIGBUS is received in compile service code then we weren't handling
it correctly. Instead we would fail the JIT space check and hand it off
to the guest.
When compiling code and linking blocks, disable all signals then
reenable once back in the dispatcher.
This adds 15-40 microseconds on to each of these steps and some
additional branching overhead.
This is a problem where our allocator is not reentrant safe and when
receiving a signal we need to jump to a new code region and compile.
Depending on the mutexes that are currently live, we will just stall out
forever.
This is /very/ commonly picked up when attempting to run pressure-vessel
lioncash