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Nasal-Interpreter
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📝 change name of some identifiers. shrink size of main stack.

This commit is contained in:
ValKmjolnir 2022-07-05 18:13:54 +08:00
parent 2bc15697df
commit 82b33ffe4a
3 changed files with 43 additions and 40 deletions
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2
nasal.h
View File

@ -43,7 +43,7 @@
#define PRTINT64 "%lld"
#endif
const uint32_t STACK_DEPTH=4096;
const uint32_t STACK_DEPTH=2048;
inline double hex_to_double(const char* str)
{

76
nasal_gc.h
View File

@ -11,9 +11,9 @@ enum vm_type:std::uint32_t{
vm_num,
/* gc object */
vm_str,
vm_func,
vm_vec,
vm_hash,
vm_func,
vm_upval,
vm_obj,
vm_co,
@ -25,9 +25,9 @@ const uint32_t gc_tsize=vm_tsize-vm_str;
const uint32_t ini[gc_tsize]=
{
128, // vm_str
512, // vm_func
128, // vm_vec
32, // vm_hash
512, // vm_func
512, // vm_upval
0, // vm_obj
0 // vm_co
@ -35,9 +35,9 @@ const uint32_t ini[gc_tsize]=
const uint32_t incr[gc_tsize]=
{
256, // vm_str
512, // vm_func
512, // vm_vec
512, // vm_hash
512, // vm_func
128, // vm_upval
128, // vm_obj
16 // vm_co
@ -447,21 +447,21 @@ struct nasal_gc
} main_ctx;
/* runtime context */
uint32_t& pc; // program counter
nasal_ref*& localr; // local scope register
nasal_ref*& memr; // used for mem_call
nasal_ref& funcr; // function register
nasal_ref& upvalr; // upvalue register
nasal_ref*& canary; // avoid stackoverflow
nasal_ref*& top; // stack top
nasal_ref* stack; // stack pointer
nasal_co* coroutine; // running coroutine
uint32_t& pc; // program counter
nasal_ref*& localr; // local scope register
nasal_ref*& memr; // used for mem_call
nasal_ref& funcr; // function register
nasal_ref& upvalr; // upvalue register
nasal_ref*& canary; // avoid stackoverflow
nasal_ref*& top; // stack top
nasal_ref* stack; // stack pointer
nasal_co* coroutine; // running coroutine
/* constants and memory pool */
std::vector<nasal_ref> strs; // reserved address for const vm_str
std::vector<nasal_val*> memory; // gc memory
std::queue<nasal_val*> free_list[gc_tsize]; // gc free list
std::vector<nasal_ref> env_argv; // command line arguments
std::vector<nasal_ref> strs; // reserved address for const vm_str
std::vector<nasal_ref> env_argv; // command line arguments
std::vector<nasal_val*> memory; // gc memory
std::queue<nasal_val*> unused[gc_tsize]; // gc free list
/* values for analysis */
uint64_t size[gc_tsize];
@ -567,7 +567,7 @@ void nasal_gc::sweep()
case vm_obj: i->ptr.obj->clear(); break;
case vm_co: i->ptr.co->clear(); break;
}
free_list[i->type-vm_str].push(i);
unused[i->type-vm_str].push(i);
i->mark=GC_COLLECTED;
}
else if(i->mark==GC_FOUND)
@ -586,7 +586,7 @@ void nasal_gc::init(const std::vector<std::string>& s,const std::vector<std::str
{
nasal_val* tmp=new nasal_val(i+vm_str);
memory.push_back(tmp);
free_list[i].push(tmp);
unused[i].push(tmp);
}
coroutine=nullptr;
// init constant strings
@ -612,8 +612,8 @@ void nasal_gc::clear()
delete i;
memory.clear();
for(uint8_t i=0;i<gc_tsize;++i)
while(!free_list[i].empty())
free_list[i].pop();
while(!unused[i].empty())
unused[i].pop();
for(auto& i:strs)
delete i.value.gcobj;
strs.clear();
@ -621,7 +621,7 @@ void nasal_gc::clear()
}
void nasal_gc::info()
{
const char* name[]={"str ","func ","vec ","hash ","upval","obj ","co "};
const char* name[]={"str ","vec ","hash ","func ","upval","obj ","co "};
std::cout<<"\ngarbage collector info\n";
for(uint8_t i=0;i<gc_tsize;++i)
std::cout<<" "<<name[i]<<" | gc | "<<count[i]<<"\n"
@ -632,26 +632,27 @@ void nasal_gc::info()
}
nasal_ref nasal_gc::alloc(uint8_t type)
{
++allocc[type-vm_str];
if(free_list[type-vm_str].empty())
const uint8_t index=type-vm_str;
++allocc[index];
if(unused[index].empty())
{
++count[type-vm_str];
++count[index];
mark();
sweep();
}
if(free_list[type-vm_str].empty())
if(unused[index].empty())
{
++size[type-vm_str];
for(uint32_t i=0;i<incr[type-vm_str];++i)
++size[index];
for(uint32_t i=0;i<incr[index];++i)
{
nasal_val* tmp=new nasal_val(type);
memory.push_back(tmp);
free_list[type-vm_str].push(tmp);
unused[index].push(tmp);
}
}
nasal_ref ret={type,free_list[type-vm_str].front()};
nasal_ref ret={type,unused[index].front()};
ret.value.gcobj->mark=GC_UNCOLLECTED;
free_list[type-vm_str].pop();
unused[index].pop();
return ret;
}
nasal_ref nasal_gc::builtin_alloc(uint8_t type)
@ -660,20 +661,21 @@ nasal_ref nasal_gc::builtin_alloc(uint8_t type)
// this may cause mark-sweep in gc::alloc
// and the value got before will be collected,this is a fatal error
// so use builtin_alloc in builtin functions if this function uses alloc more then one time
++allocc[type-vm_str];
if(free_list[type-vm_str].empty())
const uint8_t index=type-vm_str;
++allocc[index];
if(unused[index].empty())
{
++size[type-vm_str];
for(uint32_t i=0;i<incr[type-vm_str];++i)
++size[index];
for(uint32_t i=0;i<incr[index];++i)
{
nasal_val* tmp=new nasal_val(type);
memory.push_back(tmp);
free_list[type-vm_str].push(tmp);
unused[index].push(tmp);
}
}
nasal_ref ret={type,free_list[type-vm_str].front()};
nasal_ref ret={type,unused[index].front()};
ret.value.gcobj->mark=GC_UNCOLLECTED;
free_list[type-vm_str].pop();
unused[index].pop();
return ret;
}
void nasal_gc::ctxchg(nasal_co& context)

5
nasal_vm.h
View File

@ -15,10 +15,11 @@ protected:
const double* num_table;// const numbers, ref from nasal_codegen
const std::string* str_table;// const symbols, ref from nasal_codegen
std::vector<uint32_t> imm; // immediate number
/* main stack */
nasal_ref stack[STACK_DEPTH];
/* garbage collector */
nasal_gc gc;
/* main stack */
nasal_ref stack[STACK_DEPTH];
/* values used for debug */
size_t files_size;