diff options
Diffstat (limited to 'gc.h')
| -rw-r--r-- | gc.h | 51 |
1 files changed, 36 insertions, 15 deletions
@@ -1,4 +1,4 @@ -/* Copyright 2009-2020 +/* Copyright 2009-2024 * Kaz Kylheku <kaz@kylheku.com> * Vancouver, Canada * All rights reserved. @@ -6,23 +6,24 @@ * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - * 1. Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. */ void gc_init(val *stack_bottom); @@ -30,10 +31,12 @@ void gc_late_init(void); val prot1(val *loc); void protect(val *, ...); val make_obj(void); +val copy_obj(val); void gc(void); int gc_state(int); int gc_inprogress(void); void gc_mark(val); +void gc_mark_norec(val obj); void gc_conservative_mark(val); void gc_mark_mem(val *low, val *high); int gc_is_reachable(val); @@ -64,8 +67,26 @@ extern val break_obj; #endif #define gc_hint(var) gc_hint_func(&var) -#define REACHABLE 0x100 -#define FREE 0x200 +#define REACHABLE 0x100U +#define FREE 0x200U INLINE val zap(volatile val *loc) { val ret = *loc; *loc = nil; return ret; } + +#if CONFIG_ZAP_DEAD_LOCATIONS #define z(lvalue) zap(&lvalue) +#else +#define z(lvalue) (lvalue) +#endif + +extern val *gc_stack_bottom; +extern val *gc_stack_limit; +void gc_stack_overflow(void); +INLINE void gc_stack_check(void) +{ + val v; + if (&v < gc_stack_limit) + gc_stack_overflow(); +} + +val *gc_prot_array_alloc(cnum size, val *obj); +void gc_prot_array_free(val *); |