This will allow us to transcode characters to bytes and vice versa. This is
necessary to implement conductive UNREAD-BYTE and UNREAD-BYTE, but will allow us
to also add low-level parsers for binary objects in the future.
We will use this operators to allocate the first environment and stacks so that
there is no circularity between ecl_boot and starting the garbage collector.
- Spinlocks have been replaced by ordinary locks. Without access to
the underyling scheduler, spinlocks provide no performace benefit
and may even be harmful in case of high contention.
- Synchronization of process creation and exiting has been simplified.
Instead of a spinlock, a barrier and atomic operations we now use
only a single lock protecting the shared process state and a
condition variable for implementing process joins.
- Some locks which were implemented using Lisp objects now directly
use a native mutex.
- Our own mutex implementation has been removed as it is now unused.
The file symbols_list2.h was automatically generated from the file
symbols_list.h for dpp. This commit unifies said structure definition and
removes a step for generating symbols_list2.h.
From now on at runtime the structurecl_symbol_initializer has an additional
element storing the function name. That will help solving #543.
Previously: unconditionally use the size from ECL_OPT_C_STACK_SIZE if
it is larger than the OS provided value and if possible resize the
stack at runtime.
Now: Use ECL_OPT_C_STACK_SIZE if provided. Otherwise, use a) the OS
provided value if we can resize the stack at runtime (for Unix) or b)
the new build option ECL_DEFAULT_C_STACK_SIZE (1 MB) if we can set the
stack size at link time (for Windows).
Because that needs the DbgHelp library, an additional make
option has been defined for users, who don't want to link to this
library. Some msvc Makefile cleanup has also been done.
because windows using utf16 internally, by using 16bit unicode chararcter,
there is no need to convert ecl_character to wchar_t in embedding
environment.
- libatomic_ops is updated accordingly,
- new directory for garbage collector is bdwgc,
- updated MSVC Makefiles,
- obsolete directories gc and gc-unstable are removed.
