MSVC does not allow for specifying /std:c99 so we need c11. We don't rely on the
default standard because it does not allow for static struct initializers.
This table contains symbols that are essential to the core runtime: ECL_T,
ECL_UNBOUND, ECL_SIGNAL_HANDLERS, ECL_RESTART_CLUSTERs, ECL_INTERRUPTS_ENABLED,
ECL_ALLOW_OTHER_KEYS and ECL_UNBOUND.
The table is initialized with constexpr, so it is possible to use its elements
in static elements. We also add ecl_def_function to ecl-inl to allow
appropriating C functions into Lisp world at top level.
Previously we've opencoded calls to these functions, although they may be nicely
abstracted with static inline functions. This change improves code readibility
and portability.
We also remove conditionalization for garbage collector inclusion in autotools.
When we propose an alternative gc, then we may decide to put them back, or to
add necessary ifdef statements directly in files.
Moreover untangle c-stack from the gc code and assign the stack base with a
rough guess only when it is not initialized yet (GC will always fill it).
Finally remove a kludge from ecl_adopt_cpu and disable colleciton until the cpu
is fully initialized.
I've also renamed *HANDLER-CLUSTERS* to a more appropriate *SIGNAL-HANDLERS*.
Currently this symbol is imported to the SYSTEM package, although this may be
revised in the future to cater to multiple global environments. Alternatively
the SYSTEM package may be common to all runtimes.
Instead of storing lists in *HANDLER-CLUSTERS*, we define functions that are
called unconditionally on the handler. HANDLER-BIND defines that function to be
a typecase that is dispatched based on the conditiont type, as specified by CL.
This change will aid further refactor.
Atomics are needed by stacks.
Replace ecl_atomic_push -> ecl_atomic_psh that takes as an argument a
preallocated cons. ecl_atomic_push is replaced by a macro.
Both tags have a special meaning to the low-level runtime (most notably the
frame stack). Extracting them from "all symbols" is a step towards multiple
runtimes.
We also introduce an empty form for NUCL_OBJS and nucleus.h header for a
minimized runtime. This runtime will be developed over next commits so that we
can separate runtime essentials from other dependencies.
- {run,bds,frs}_set_size functions were very similar; I've updated them to
follow the same naming convention and execution order to indicate that.
- these functions are now renamed to xxx_set_limit -that simplifies some code
- there were inconsistencies in how we've treated boot sizes (limit vs size)
- rename some more ecl_stack_* functions to ecl_vms_* for clarity
All these operations were propagated up to the condition system in order to
reset the stack margin in the case of a non-local exit. We can do that easily
with open-coded unwind protect within stacks.
Objects have a well defind extent so there is no need to rely on GC for
them. This change allows us to move stack initialization before garbage
collector is introduced into the system (or even without any GC).
This commit removes initial bindings array from the process and allocates it
only in the bds stack. To make fields in the structure less confusing we rename
initial_bindings slot to inherit_bindings_p.
On observable behavior change is that bindings are inherited when the process is
enabled, not when it is created. That was not specified in documentation so it
should be fine to change this behavior. Moreover it makes more sense from the
programmer perspective -- we want to inherit bindings of the process that starts
our thread, not the one that creates it.
