mirror of
https://github.com/janet-lang/janet
synced 2024-12-28 17:30:31 +00:00
Reintroduce a separate Thread objects for threads instead of using arrays.
This commit is contained in:
Calvin Rose
parent
d28a7174af
commit
8cdc0610e3
47
datatypes.h
47
datatypes.h
@ -4,10 +4,6 @@
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#include <stdint.h>
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#include <setjmp.h>
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#define THREAD_STATUS_ALIVE 0
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#define THREAD_STATUS_DEAD 1
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#define THREAD_STATUS_PENDING 2
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typedef enum Type {
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TYPE_NIL = 0,
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TYPE_NUMBER,
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@ -39,6 +35,7 @@ typedef struct Parser Parser;
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typedef struct ParseState ParseState;
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typedef struct Scope Scope;
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typedef struct Compiler Compiler;
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typedef struct Thread Thread;
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typedef struct StackFrame StackFrame;
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union ValueData {
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@ -49,28 +46,49 @@ union ValueData {
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Buffer * buffer;
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Dictionary * dict;
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Func * func;
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Thread * thread;
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void * pointer;
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CFunction cfunction;
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uint16_t u16[4];
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uint8_t u8[8];
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} data;
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struct Value {
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Type type;
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ValueData data;
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};
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struct Thread {
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uint32_t count;
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uint32_t capacity;
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Value * data;
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enum {
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THREAD_PENDING = 0,
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THREAD_ALIVE,
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TRHEAD_DEAD
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} status;
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};
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struct Array {
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uint32_t count;
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uint32_t capacity;
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Value * data;
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uint32_t flags;
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};
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struct Buffer {
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uint32_t count;
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uint32_t capacity;
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uint8_t * data;
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uint32_t flags;
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};
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struct Dictionary {
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uint32_t count;
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uint32_t capacity;
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DictBucket ** buckets;
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uint32_t flags;
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Value meta;
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};
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struct DictionaryIterator {
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@ -89,7 +107,7 @@ struct FuncDef {
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};
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struct FuncEnv {
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Array * thread; /* When nil, index the local values */
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Thread * thread; /* When nil, index the local values */
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uint32_t stackOffset; /* Used as environment size when off stack */
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Value * values;
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};
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@ -100,11 +118,6 @@ struct Func {
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Func * parent;
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};
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struct Value {
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Type type;
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ValueData data;
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};
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struct DictBucket {
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Value key;
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Value value;
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@ -129,21 +142,19 @@ struct VM {
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uint32_t lock : 31;
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/* Thread */
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uint16_t * pc;
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Array * thread;
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Thread * thread;
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Value * base;
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StackFrame * frame;
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/* Return state */
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const char * error;
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jmp_buf jump;
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Value ret; /* Returned value from VMStart */
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/* Object definitions */
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Value metas[TYPE_DICTIONARY];
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};
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/* Parsing */
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#define PARSER_PENDING 0
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#define PARSER_FULL 1
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#define PARSER_ERROR -1
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struct Parser {
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VM * vm;
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const char * error;
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@ -152,7 +163,11 @@ struct Parser {
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uint32_t count;
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uint32_t cap;
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uint32_t index;
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uint32_t status;
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enum {
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PARSER_PENDING = 0,
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PARSER_FULL,
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PARSER_ERROR
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} status;
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};
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/* Compiling */
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3
ds.c
3
ds.c
@ -14,6 +14,7 @@ Buffer * BufferNew(VM * vm, uint32_t capacity) {
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buffer->data = data;
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buffer->count = 0;
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buffer->capacity = capacity;
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buffer->flags = 0;
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return buffer;
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}
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@ -75,6 +76,7 @@ Array * ArrayNew(VM * vm, uint32_t capacity) {
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array->data = data;
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array->count = 0;
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array->capacity = capacity;
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array->flags = 0;
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return array;
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}
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@ -154,6 +156,7 @@ Dictionary * DictNew(VM * vm, uint32_t capacity) {
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dict->buckets = buckets;
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dict->capacity = capacity;
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dict->count = 0;
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dict->flags = 0;
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return dict;
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}
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5
ds.h
5
ds.h
@ -3,6 +3,11 @@
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#include "datatypes.h"
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/*
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* Data type flags
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*/
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#define DS_LOCKED 0x01
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/****/
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/* Buffer functions */
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/****/
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43
vm.c
43
vm.c
@ -15,7 +15,7 @@ static const char VMS_EXPECTED_NUMBER_LOP[] = "Expected left operand to be numbe
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#define FRAME_SIZE ((sizeof(StackFrame) + sizeof(Value) - 1) / sizeof(Value))
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/* Get the stack frame pointer for a thread */
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static StackFrame * ThreadFrame(Array * thread) {
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static StackFrame * ThreadFrame(Thread * thread) {
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return (StackFrame *)(thread->data + thread->count - FRAME_SIZE);
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}
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@ -39,7 +39,7 @@ static void VMMarkFuncEnv(VM * vm, FuncEnv * env) {
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GCHeader(env)->color = vm->black;
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if (env->thread) {
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temp.type = TYPE_THREAD;
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temp.data.array = env->thread;
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temp.data.thread = env->thread;
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VMMark(vm, &temp);
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}
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if (env->values) {
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@ -117,8 +117,8 @@ static void VMMark(VM * vm, Value * x) {
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break;
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case TYPE_THREAD:
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if (GCHeader(x->data.array)->color != vm->black) {
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Array * thread = x->data.array;
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if (GCHeader(x->data.thread)->color != vm->black) {
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Thread * thread = x->data.thread;
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StackFrame * frame = (StackFrame *)thread->data;
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StackFrame * end = ThreadFrame(thread);
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GCHeader(thread)->color = vm->black;
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@ -220,7 +220,7 @@ void VMCollect(VM * vm) {
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if (vm->thread) {
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Value thread;
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thread.type = TYPE_THREAD;
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thread.data.array = vm->thread;
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thread.data.thread = vm->thread;
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VMMark(vm, &thread);
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}
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VMMark(vm, &vm->ret);
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@ -234,8 +234,19 @@ void VMMaybeCollect(VM * vm) {
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VMCollect(vm);
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}
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/* Ensure that a thread has enough space in it */
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static void ThreadEnsure(VM * vm, Thread * thread, uint32_t size) {
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if (size > thread->capacity) {
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uint32_t newCap = size * 2;
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Value * newData = VMAlloc(vm, sizeof(Value) * newCap);
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memcpy(newData, thread->data, thread->capacity * sizeof(Value));
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thread->data = newData;
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thread->capacity = newCap;
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}
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}
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/* Push a stack frame onto a thread */
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static void VMThreadPush(VM * vm, Array * thread, Value callee, uint32_t size) {
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static void VMThreadPush(VM * vm, Thread * thread, Value callee, uint32_t size) {
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uint16_t oldSize;
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uint32_t nextCount, i;
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StackFrame * frame;
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@ -246,7 +257,7 @@ static void VMThreadPush(VM * vm, Array * thread, Value callee, uint32_t size) {
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oldSize = 0;
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}
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nextCount = thread->count + oldSize + FRAME_SIZE;
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ArrayEnsure(vm, thread, nextCount + size);
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ThreadEnsure(vm, thread, nextCount + size);
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thread->count = nextCount;
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/* Ensure values start out as nil so as to not confuse
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* the garabage collector */
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@ -268,7 +279,7 @@ static void VMThreadSplitStack(VM * vm) {
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FuncEnv * env = frame->env;
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/* Check for closures */
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if (env) {
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Array * thread = vm->thread;
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Thread * thread = vm->thread;
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uint32_t size = frame->size;
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env->thread = NULL;
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env->stackOffset = size;
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@ -279,7 +290,7 @@ static void VMThreadSplitStack(VM * vm) {
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/* Pop the top-most stack frame from stack */
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static void VMThreadPop(VM * vm) {
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Array * thread = vm->thread;
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Thread * thread = vm->thread;
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StackFrame * frame = vm->frame;
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uint32_t delta = FRAME_SIZE + frame->prevSize;
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if (thread->count) {
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@ -335,7 +346,7 @@ static void VMReturn(VM * vm, Value ret) {
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/* Implementation of the opcode for function calls */
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static void VMCallOp(VM * vm) {
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Array * thread = vm->thread;
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Thread * thread = vm->thread;
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Value callee = vm->base[vm->pc[1]];
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uint32_t arity = vm->pc[3];
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uint32_t oldCount = thread->count;
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@ -371,7 +382,7 @@ static void VMCallOp(VM * vm) {
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/* Implementation of the opcode for tail calls */
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static void VMTailCallOp(VM * vm) {
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Array * thread = vm->thread;
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Thread * thread = vm->thread;
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Value callee = vm->base[vm->pc[1]];
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uint32_t arity = vm->pc[2];
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uint16_t newFrameSize, currentFrameSize;
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@ -388,7 +399,7 @@ static void VMTailCallOp(VM * vm) {
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}
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/* Ensure stack has enough space for copies of arguments */
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currentFrameSize = vm->frame->size;
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ArrayEnsure(vm, thread, thread->count + currentFrameSize + arity);
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ThreadEnsure(vm, thread, thread->count + currentFrameSize + arity);
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vm->base = thread->data + thread->count;
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/* Copy the arguments into the extra space */
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for (i = 0; i < arity; ++i) {
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@ -416,7 +427,7 @@ static void VMTailCallOp(VM * vm) {
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/* Instantiate a closure */
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static Value VMMakeClosure(VM * vm, uint16_t literal) {
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Array * thread = vm->thread;
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Thread * thread = vm->thread;
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if (vm->frame->callee.type != TYPE_FUNCTION) {
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VMError(vm, EXPECTED_FUNCTION);
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} else {
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@ -767,7 +778,11 @@ void VMInit(VM * vm) {
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/* Load a function into the VM. The function will be called with
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* no arguments when run */
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void VMLoad(VM * vm, Value func) {
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Array * thread = ArrayNew(vm, 100);
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uint32_t startCapacity = 100;
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Thread * thread = VMAlloc(vm, sizeof(Thread));
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thread->data = VMAlloc(vm, sizeof(Value) * startCapacity);
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thread->capacity = startCapacity;
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thread->count = 0;
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vm->thread = thread;
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if (func.type == TYPE_FUNCTION) {
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Func * fn = func.data.func;
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