Headed towards a 4.0. The binary format will change slightly but
incompatibly (e.g. renumbering of intrinsics). Having a new GC is
enough of a change to warrant a minor version bump, and it's been 5
years so why not go major.
* GUILE-VERSION (GUILE_EFFECTIVE_VERSION): Bump to 4.0.
(GUILE_MICRO_VERSION, GUILE_MINOR_VERSION): Bump to 3.9.0.
(LIBGUILE_INTERFACE_CURRENT, LIBGUILE_INTERFACE_AGE): Reset.
* meta/guile-4.0.pc.in:
* meta/guile-4.0-uninstalled.pc.in: Rename from guile-3.0.
* .gitignore: Ignore pkg-config files with 4.0 effective version.
* README: Update slightly.
* doc/ref/api-evaluation.texi (Load Paths):
* doc/ref/api-options.texi (Build Config):
* doc/ref/guile-invoke.texi (Environment Variables):
* doc/ref/history.texi (A Timeline of Selected Guile Releases):
* doc/ref/libguile-parallel.texi (Parallel Installations):
* doc/ref/srfi-modules.texi (SRFI-0): Update references to stable
version in paths.
* module/system/vm/assembler.scm (*bytecode-minor-version*):
* libguile/loader.h (SCM_OBJCODE_MAJOR_VERSION):
(SCM_OBJCODE_MINIMUM_MINOR_VERSION):
(SCM_OBJCODE_MINOR_VERSION): Use the same major objcode version for now
but bump the minor to 99.
* meta/guile.m4 (GUILE_PKG, GUILE_PROGS): Check for Guile 4.0.
* module/ice-9/boot-9.scm (%cond-expand-features): Add new cond-expand
features.
* libguile/scm.h (scm_tc7_thread): Give threads their own tc7.
* libguile/threads.h (struct scm_thread): Add a tag, so that struct
thread can be a SCM directly. Add a struct gc_mutator* member.
(scm_thread_handle): New inline function.
(SCM_I_IS_THREAD, SCM_I_THREAD_DATA, SCM_VALIDATE_THREAD): Update to use
tc7 instead of SMOB tags.
* libguile/continuations.c (scm_i_with_continuation_barrier)
* libguile/finalizers.c (queue_finalizer_async)
* libguile/jit.c (compile_current_thread)
* libguile/threads.c (block_self, guilify_self_2)
(lock_mutex, unlock_mutex, timed_wait scm_current_thread)
(scm_all_threads)
* libguile/vm-engine.c (current-thread): Use scm_thread_handle instead
of thread->handle.
* libguile/evalext.c (scm_self_evaluating_p):
* libguile/goops.c (class_thread, scm_class_of, scm_sys_goops_early_init)
* libguile/print.c (iprin1)
* module/language/cps/compile-bytecode.scm (compile-function)
* module/oop/goops.scm (<thread>)
* module/system/base/types.scm (cell->object)
* module/system/base/types/internal.scm (heap-tags)
* module/system/vm/assembler.scm: (emit-thread?): Adapt to
scm_tc7_thread.
* libguile/gc-internal.h: Move init functions that take "struct
gc_stack_addr" here, so that internal Whippet uses don't cause Whippet
to be added to public headers.
* libguile/gc.c (scm_storage_prehistory): Take struct gc_stack_addr as
arg, and pass to gc_init. Return a mutator pointer.
* libguile/init.c (scm_i_init_guile): Pass mutator and stack base to GC
and thread init routines.
* libguile/threads.c (scm_trace_dynstack, scm_trace_thread)
(scm_trace_thread_mutator_roots): New infra for marking threads in terms
of Whippet API.
* libguile/threads.c (guilify_self_1): Since we don't use a separate GC
kind for threads any more, and thread marking is keyed off
gc_mutator_set_roots, we can avoid some of the gnarly synchronization.
(on_thread_exit): Arrange to gc_finish_for_thread.
(scm_i_init_thread_for_guile): Use gc_init_for_thread.
(init_main_thread, with_guile, scm_i_with_guile): Use Whippet API.
(scm_threads_prehistory): Take main-thread mutator and the stack base as
arguments.
* libguile/vm.c (scm_trace_vm): Rework in terms of Whippet API.
* libguile/whippet-embedder.h (gc_trace_mutator_roots): Arrange to trace
the current mutator's SCM thread object.
* libguile/trace.h: New file, to declare implementations of trace
routines.
* libguile/Makefile.am (noinst_HEADERS): Add trace.h.
* libguile/gc.c: Define an event listener that collects basic
statistics, runs C hooks, and arranges to run the Scheme hook if it is
nonempty.
(scm_gc_stats): Fetch statistics from the gathered event data.
(scm_gc_dump): Use scm_basic_stats_print.
(scm_storage_prehistory): Fix indentation.
(scm_init_gc_protect_object): Remove dead code.
(queue_after_gc_hook): Not really needed, as we have an after-GC C event
to run the C hooks. Scheme hook activation is inlined into the event
listener.
(start_gc_timer, accumulate_gc_timer): No need any more.
(scm_init_gc): Simplify hook registration.
* libguile/Makefile.am (WHIPPET_EMBEDDER_H): Define this variable
instead of using -include; otherwise we don't get the chance to set
_LARGEFILE64_SOURCE before including Whippet files.
(AM_CPPFLAGS): Simplify.
(libguile_@GUILE_EFFECTIVE_VERSION@_la_DEPENDENCIES): Explicitly add
libwhippet.la as a dependency.
(noinst_HEADERS): Add gc-internal.h
* libguile/gc-internal.h: New file.
* libguile/gc.c: Include gc-internal.h.
* configure.ac: Add subdir-objects Makefile.am option, to prevent
accidental collision between object file names.
* libguile/Makefile.am: Include whippet/embed.am, and add the
appropriate hooks to the Makefile.
* libguile/whippet-embedder.h: New file.
There is an apparent bug in Windows 11 (not Windows 10) where,
when reading from an fd backed by the Console, a single
return character will always be available.
* libguile/posix-w32.c (console_has_return_keyevent_w32): new procedure
* libguile/posix-w32.h: declare console_has_return_keyevent_w32
* libguile/fports.c [__MINGW32__](fport_input_waiting): ignore return keyevent
Now that Guile uses the posix_spawn gnulib module, several of Guile's
custom w32 functions substitutes no longer work. Some functions
relied on populating and maintaining an internal PID-to-Handle database,
which is no longer possible.
kill, getpriority, setpriority, getaffinity and setaffinity
are removed. waitpid is simplified and does not handle ENOHANG.
* NEWS: updated
* libguile/posix-w32.c (struct proc_record, find_proc, proc_handle): removed
(record_proc, delete_proc, prepare_child_handle, compenv): removed
(prepare_envblk, lookup_cmd, prepare_cmdline, start_child): removed
(kill, getpriority, setpriority, sched_getaffinity): removed
(sched_setaffinity): removed
(waitpid): modified to just use _cwait. ENOHANG emlation removed.
* libguile/posix-w32.h (CPU_ZERO, CPU_ISSET, CPU_SET, CPU_SETSIZE): removed
(cpu_set_t, PRIO_PROCESS, PRIO_PGRP, PRIO_USER): removed
(HAVE_START_CHILD, HAVE_KILL, HAVE_GETPRIORITY): removed
(HAVE_SETPRIORITY, HAVE_SCHED_GETAFFINITY, HAVE_SCHED_SETAFFINITY): removed
declarations for waitpid, start_child, kill, getpriority: removed
declarations for setpriority, sched_getaffinity, sched_set_affinity: Removed
piped-process only uses fork to match legacy behavior, but on systems
that never had fork, there is no need to match that behavior.
piped-process and system* can be provided without fork.
* libguile/posix.c (piped_process): allow function definition without HAVE_FORK,
but stub out internal dummy process with HAVE_FORK
(restore_sigaction, scm_dynwind_sigaction, scm_system_star): don't
require HAVE_FORK
(scm_init_popen): don't require HAVE_FORK
(scm_init_posix): don't require HAVE_FORK to add posix feature or
register popen extension
* libguile/posix-w32.c (getpagesize_w32): new procedure
* libguile/posix-w32.h: declaration of getpagesize_w32
* libguile/loader.c [__MINGW32__](scm_bootstrap_loader): use new procedure
* libguile/vm.c [__MINGW32__](scm_i_vm_prepare_stack): use new procedure
