mirror of
https://github.com/janet-lang/janet
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105 lines
4.0 KiB
C
105 lines
4.0 KiB
C
/*
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* Copyright (c) 2020 Calvin Rose
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef JANET_STATE_H_defined
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#define JANET_STATE_H_defined
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#include <stdint.h>
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/* The VM state. Rather than a struct that is passed
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* around, the vm state is global for simplicity. If
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* at some point a global state object, or context,
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* is required to be passed around, this is what would
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* be in it. However, thread local global variables for interpreter
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* state should allow easy multi-threading. */
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typedef struct JanetScratch JanetScratch;
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/* Top level dynamic bindings */
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extern JANET_THREAD_LOCAL JanetTable *janet_vm_top_dyns;
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/* Cache the core environment */
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extern JANET_THREAD_LOCAL JanetTable *janet_vm_core_env;
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/* How many VM stacks have been entered */
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extern JANET_THREAD_LOCAL int janet_vm_stackn;
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/* The current running fiber on the current thread.
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* Set and unset by janet_run. */
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extern JANET_THREAD_LOCAL JanetFiber *janet_vm_fiber;
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extern JANET_THREAD_LOCAL JanetFiber *janet_vm_root_fiber;
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/* The current pointer to the inner most jmp_buf. The current
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* return point for panics. */
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extern JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf;
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extern JANET_THREAD_LOCAL Janet *janet_vm_return_reg;
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/* The global registry for c functions. Used to store meta-data
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* along with otherwise bare c function pointers. */
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extern JANET_THREAD_LOCAL JanetTable *janet_vm_registry;
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/* Registry for abstract abstract types that can be marshalled.
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* We need this to look up the constructors when unmarshalling. */
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extern JANET_THREAD_LOCAL JanetTable *janet_vm_abstract_registry;
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/* Immutable value cache */
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extern JANET_THREAD_LOCAL const uint8_t **janet_vm_cache;
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extern JANET_THREAD_LOCAL uint32_t janet_vm_cache_capacity;
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extern JANET_THREAD_LOCAL uint32_t janet_vm_cache_count;
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extern JANET_THREAD_LOCAL uint32_t janet_vm_cache_deleted;
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/* Garbage collection */
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extern JANET_THREAD_LOCAL void *janet_vm_blocks;
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extern JANET_THREAD_LOCAL size_t janet_vm_gc_interval;
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extern JANET_THREAD_LOCAL size_t janet_vm_next_collection;
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extern JANET_THREAD_LOCAL size_t janet_vm_block_count;
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extern JANET_THREAD_LOCAL int janet_vm_gc_suspend;
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/* GC roots */
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extern JANET_THREAD_LOCAL Janet *janet_vm_roots;
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extern JANET_THREAD_LOCAL size_t janet_vm_root_count;
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extern JANET_THREAD_LOCAL size_t janet_vm_root_capacity;
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/* Scratch memory */
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extern JANET_THREAD_LOCAL JanetScratch **janet_scratch_mem;
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extern JANET_THREAD_LOCAL size_t janet_scratch_cap;
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extern JANET_THREAD_LOCAL size_t janet_scratch_len;
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/* Recursionless traversal of data structures */
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typedef struct {
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JanetGCObject *self;
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JanetGCObject *other;
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int32_t index;
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int32_t index2;
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} JanetTraversalNode;
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extern JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal;
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extern JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal_top;
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extern JANET_THREAD_LOCAL JanetTraversalNode *janet_vm_traversal_base;
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/* Setup / teardown */
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#ifdef JANET_THREADS
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void janet_threads_init(void);
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void janet_threads_deinit(void);
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#endif
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#endif /* JANET_STATE_H_defined */
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