Remove JSFunctionBytecode.has_debug flag (#207)
And merge the debug struct into JSFunctionBytecode because it is now always present. Refs: https://github.com/quickjs-ng/quickjs/pull/193#pullrequestreview-1774511177
This commit is contained in:
Ben Noordhuis
GitHub
parent
030a0ddf3f
commit
b478329cdd
1 changed files with 108 additions and 152 deletions
260
quickjs.c
260
quickjs.c
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@ -624,7 +624,6 @@ typedef struct JSFunctionBytecode {
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uint8_t super_call_allowed : 1;
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uint8_t super_allowed : 1;
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uint8_t arguments_allowed : 1;
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uint8_t has_debug : 1;
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uint8_t backtrace_barrier : 1; /* stop backtrace on this function */
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uint8_t read_only_bytecode : 1;
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/* XXX: 4 bits available */
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@ -642,16 +641,13 @@ typedef struct JSFunctionBytecode {
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int cpool_count;
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int closure_var_count;
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JSInlineCache *ic;
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struct {
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/* debug info, move to separate structure to save memory? */
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JSAtom filename;
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int line_num;
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int col_num;
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int source_len;
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int pc2line_len;
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uint8_t *pc2line_buf;
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char *source;
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} debug;
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JSAtom filename;
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int line_num;
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int col_num;
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int source_len;
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int pc2line_len;
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uint8_t *pc2line_buf;
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char *source;
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} JSFunctionBytecode;
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typedef struct JSBoundFunction {
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@ -5754,7 +5750,7 @@ static void compute_bytecode_size(JSFunctionBytecode *b, JSMemoryUsage_helper *h
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int memory_used_count, js_func_size, i;
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memory_used_count = 0;
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js_func_size = offsetof(JSFunctionBytecode, debug);
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js_func_size = sizeof(*b);
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if (b->vardefs) {
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js_func_size += (b->arg_count + b->var_count) * sizeof(*b->vardefs);
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}
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@ -5771,17 +5767,12 @@ static void compute_bytecode_size(JSFunctionBytecode *b, JSMemoryUsage_helper *h
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if (!b->read_only_bytecode && b->byte_code_buf) {
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hp->js_func_code_size += b->byte_code_len;
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}
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if (b->has_debug) {
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js_func_size += sizeof(*b) - offsetof(JSFunctionBytecode, debug);
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if (b->debug.source) {
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memory_used_count++;
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js_func_size += b->debug.source_len + 1;
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}
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if (b->debug.pc2line_len) {
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memory_used_count++;
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hp->js_func_pc2line_count += 1;
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hp->js_func_pc2line_size += b->debug.pc2line_len;
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}
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memory_used_count++;
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js_func_size += b->source_len + 1;
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if (b->pc2line_len) {
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memory_used_count++;
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hp->js_func_pc2line_count += 1;
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hp->js_func_pc2line_size += b->pc2line_len;
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}
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hp->js_func_size += js_func_size;
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hp->js_func_count += 1;
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@ -6291,16 +6282,11 @@ static int find_line_num(JSContext *ctx, JSFunctionBytecode *b,
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unsigned int op;
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*col = 1;
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if (!b->has_debug || !b->debug.pc2line_buf) {
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/* function was stripped */
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return -1;
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}
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p = b->debug.pc2line_buf;
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p_end = p + b->debug.pc2line_len;
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p = b->pc2line_buf;
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p_end = p + b->pc2line_len;
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pc = 0;
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line_num = b->debug.line_num;
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col_num = b->debug.col_num;
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line_num = b->line_num;
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col_num = b->col_num;
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while (p < p_end) {
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op = *p++;
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if (op == 0) {
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@ -6334,7 +6320,7 @@ static int find_line_num(JSContext *ctx, JSFunctionBytecode *b,
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return line_num;
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fail:
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/* should never happen */
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return b->debug.line_num;
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return b->line_num;
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}
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/* in order to avoid executing arbitrary code during the stack trace
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@ -6416,18 +6402,16 @@ static void build_backtrace(JSContext *ctx, JSValue error_obj,
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b = p->u.func.function_bytecode;
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backtrace_barrier = b->backtrace_barrier;
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if (b->has_debug) {
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line_num1 = find_line_num(ctx, b,
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sf->cur_pc - b->byte_code_buf - 1,
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&col_num1);
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atom_str = JS_AtomToCString(ctx, b->debug.filename);
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dbuf_printf(&dbuf, " (%s",
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atom_str ? atom_str : "<null>");
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JS_FreeCString(ctx, atom_str);
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if (line_num1 != -1)
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dbuf_printf(&dbuf, ":%d:%d", line_num1, col_num1);
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dbuf_putc(&dbuf, ')');
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}
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line_num1 = find_line_num(ctx, b,
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sf->cur_pc - b->byte_code_buf - 1,
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&col_num1);
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atom_str = JS_AtomToCString(ctx, b->filename);
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dbuf_printf(&dbuf, " (%s",
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atom_str ? atom_str : "<null>");
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JS_FreeCString(ctx, atom_str);
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if (line_num1 != -1)
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dbuf_printf(&dbuf, ":%d:%d", line_num1, col_num1);
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dbuf_putc(&dbuf, ')');
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} else {
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dbuf_printf(&dbuf, " (native)");
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}
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@ -13023,18 +13007,18 @@ static JSValue js_function_proto_fileName(JSContext *ctx,
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JSValue this_val)
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{
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JSFunctionBytecode *b = JS_GetFunctionBytecode(this_val);
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if (b && b->has_debug) {
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return JS_AtomToString(ctx, b->debug.filename);
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if (b) {
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return JS_AtomToString(ctx, b->filename);
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}
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return JS_UNDEFINED;
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}
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static JSValue js_function_proto_debug_int32(JSContext *ctx,
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JSValue this_val,
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int magic)
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static JSValue js_function_proto_int32(JSContext *ctx,
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JSValue this_val,
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int magic)
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{
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JSFunctionBytecode *b = JS_GetFunctionBytecode(this_val);
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if (b && b->has_debug) {
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if (b) {
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int *field = (int *) ((char *)b + magic);
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return js_int32(*field);
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}
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@ -26215,9 +26199,7 @@ JSAtom JS_GetScriptOrModuleName(JSContext *ctx, int n_stack_levels)
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if (!js_class_has_bytecode(p->class_id))
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return JS_ATOM_NULL;
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b = p->u.func.function_bytecode;
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if (!b->has_debug)
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return JS_ATOM_NULL;
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return JS_DupAtom(ctx, b->debug.filename);
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return JS_DupAtom(ctx, b->filename);
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}
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JSAtom JS_GetModuleName(JSContext *ctx, JSModuleDef *m)
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@ -27335,29 +27317,22 @@ static __maybe_unused void dump_single_byte_code(JSContext *ctx,
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JSFunctionBytecode *b)
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{
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JSVarDef *args, *vars;
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int line_num;
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args = vars = b->vardefs;
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if (vars)
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vars = &vars[b->arg_count];
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line_num = -1;
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if (b->has_debug)
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line_num = b->debug.line_num;
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dump_byte_code(ctx, /*pass*/3, pc, short_opcode_info(*pc).size,
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args, b->arg_count, vars, b->var_count,
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b->closure_var, b->closure_var_count,
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b->cpool, b->cpool_count,
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NULL, line_num,
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NULL, b->line_num,
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NULL, b);
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}
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static __maybe_unused void print_func_name(JSFunctionBytecode *b)
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{
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if (b->has_debug)
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if (b->debug.source)
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print_lines(b->debug.source, 0, 1);
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print_lines(b->source, 0, 1);
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}
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static __maybe_unused void dump_pc2line(JSContext *ctx,
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@ -27422,9 +27397,9 @@ static __maybe_unused void js_dump_function_bytecode(JSContext *ctx, JSFunctionB
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char atom_buf[ATOM_GET_STR_BUF_SIZE];
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const char *str;
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if (b->has_debug && b->debug.filename != JS_ATOM_NULL) {
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str = JS_AtomGetStr(ctx, atom_buf, sizeof(atom_buf), b->debug.filename);
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printf("%s:%d:%d: ", str, b->debug.line_num, b->debug.col_num);
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if (b->filename != JS_ATOM_NULL) {
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str = JS_AtomGetStr(ctx, atom_buf, sizeof(atom_buf), b->filename);
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printf("%s:%d:%d: ", str, b->line_num, b->col_num);
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}
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str = JS_AtomGetStr(ctx, atom_buf, sizeof(atom_buf), b->func_name);
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@ -27479,12 +27454,9 @@ static __maybe_unused void js_dump_function_bytecode(JSContext *ctx, JSFunctionB
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b->vardefs ? b->vardefs + b->arg_count : NULL, b->var_count,
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b->closure_var, b->closure_var_count,
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b->cpool, b->cpool_count,
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b->has_debug ? b->debug.source : NULL,
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b->has_debug ? b->debug.line_num : -1, NULL, b);
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b->source, b->line_num, NULL, b);
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#if defined(DUMP_BYTECODE) && (DUMP_BYTECODE & 32)
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if (b->has_debug)
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dump_pc2line(ctx, b->debug.pc2line_buf, b->debug.pc2line_len,
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b->debug.line_num, b->debug.col_num);
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dump_pc2line(ctx, b->pc2line_buf, b->pc2line_len, b->line_num, b->col_num);
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#endif
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printf("\n");
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}
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@ -30792,17 +30764,16 @@ static JSValue js_create_function(JSContext *ctx, JSFunctionDef *fd)
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/* XXX: source and pc2line info should be packed at the end of the
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JSFunctionBytecode structure, avoiding allocation overhead
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*/
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b->has_debug = 1;
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b->debug.filename = fd->filename;
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b->debug.line_num = fd->line_num;
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b->debug.col_num = fd->col_num;
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b->filename = fd->filename;
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b->line_num = fd->line_num;
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b->col_num = fd->col_num;
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b->debug.pc2line_buf = js_realloc(ctx, fd->pc2line.buf, fd->pc2line.size);
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if (!b->debug.pc2line_buf)
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b->debug.pc2line_buf = fd->pc2line.buf;
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b->debug.pc2line_len = fd->pc2line.size;
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b->debug.source = fd->source;
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b->debug.source_len = fd->source_len;
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b->pc2line_buf = js_realloc(ctx, fd->pc2line.buf, fd->pc2line.size);
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if (!b->pc2line_buf)
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b->pc2line_buf = fd->pc2line.buf;
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b->pc2line_len = fd->pc2line.size;
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b->source = fd->source;
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b->source_len = fd->source_len;
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if (fd->scopes != fd->def_scope_array)
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js_free(ctx, fd->scopes);
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@ -30879,11 +30850,9 @@ static void free_function_bytecode(JSRuntime *rt, JSFunctionBytecode *b)
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JS_FreeContext(b->realm);
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JS_FreeAtomRT(rt, b->func_name);
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if (b->has_debug) {
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JS_FreeAtomRT(rt, b->debug.filename);
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js_free_rt(rt, b->debug.pc2line_buf);
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js_free_rt(rt, b->debug.source);
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}
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JS_FreeAtomRT(rt, b->filename);
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js_free_rt(rt, b->pc2line_buf);
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js_free_rt(rt, b->source);
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remove_gc_object(&b->header);
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if (rt->gc_phase == JS_GC_PHASE_REMOVE_CYCLES && b->header.ref_count != 0) {
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@ -32054,7 +32023,7 @@ typedef enum BCTagEnum {
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BC_TAG_OBJECT_REFERENCE,
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} BCTagEnum;
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#define BC_VERSION 5
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#define BC_VERSION 6
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typedef struct BCWriterState {
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JSContext *ctx;
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@ -32421,7 +32390,6 @@ static int JS_WriteFunctionTag(BCWriterState *s, JSValue obj)
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bc_set_flags(&flags, &idx, b->super_call_allowed, 1);
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bc_set_flags(&flags, &idx, b->super_allowed, 1);
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bc_set_flags(&flags, &idx, b->arguments_allowed, 1);
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bc_set_flags(&flags, &idx, b->has_debug, 1);
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bc_set_flags(&flags, &idx, b->backtrace_barrier, 1);
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assert(idx <= 16);
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bc_put_u16(s, flags);
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@ -32472,24 +32440,22 @@ static int JS_WriteFunctionTag(BCWriterState *s, JSValue obj)
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if (JS_WriteFunctionBytecode(s, b->byte_code_buf, b->byte_code_len))
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goto fail;
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if (b->has_debug) {
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bc_put_atom(s, b->debug.filename);
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bc_put_leb128(s, b->debug.line_num);
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bc_put_leb128(s, b->debug.col_num);
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bc_put_leb128(s, b->debug.pc2line_len);
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dbuf_put(&s->dbuf, b->debug.pc2line_buf, b->debug.pc2line_len);
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bc_put_atom(s, b->filename);
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bc_put_leb128(s, b->line_num);
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bc_put_leb128(s, b->col_num);
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bc_put_leb128(s, b->pc2line_len);
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dbuf_put(&s->dbuf, b->pc2line_buf, b->pc2line_len);
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/* compatibility */
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dbuf_putc(&s->dbuf, 255);
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dbuf_putc(&s->dbuf, 73); // 'I'
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dbuf_putc(&s->dbuf, 67); // 'C'
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if (b->ic == NULL) {
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bc_put_leb128(s, 0);
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} else {
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bc_put_leb128(s, b->ic->count);
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for (i = 0; i < b->ic->count; i++) {
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bc_put_atom(s, b->ic->cache[i].atom);
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}
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/* compatibility */
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dbuf_putc(&s->dbuf, 255);
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dbuf_putc(&s->dbuf, 73); // 'I'
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dbuf_putc(&s->dbuf, 67); // 'C'
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if (b->ic == NULL) {
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bc_put_leb128(s, 0);
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} else {
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bc_put_leb128(s, b->ic->count);
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for (i = 0; i < b->ic->count; i++) {
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bc_put_atom(s, b->ic->cache[i].atom);
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}
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}
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@ -33333,7 +33299,6 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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bc.super_call_allowed = bc_get_flags(v16, &idx, 1);
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bc.super_allowed = bc_get_flags(v16, &idx, 1);
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bc.arguments_allowed = bc_get_flags(v16, &idx, 1);
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bc.has_debug = bc_get_flags(v16, &idx, 1);
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bc.backtrace_barrier = bc_get_flags(v16, &idx, 1);
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bc.read_only_bytecode = s->is_rom_data;
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if (bc_get_u8(s, &v8))
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@ -33358,11 +33323,7 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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if (bc_get_leb128_int(s, &local_count))
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goto fail;
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if (bc.has_debug) {
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function_size = sizeof(*b);
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} else {
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function_size = offsetof(JSFunctionBytecode, debug);
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}
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function_size = sizeof(*b);
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cpool_offset = function_size;
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function_size += bc.cpool_count * sizeof(*bc.cpool);
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vardefs_offset = function_size;
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@ -33378,7 +33339,7 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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if (!b)
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return JS_EXCEPTION;
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memcpy(b, &bc, offsetof(JSFunctionBytecode, debug));
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memcpy(b, &bc, sizeof(*b));
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b->header.ref_count = 1;
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if (local_count != 0) {
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b->vardefs = (void *)((uint8_t*)b + vardefs_offset);
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@ -33457,44 +33418,42 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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goto fail;
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bc_read_trace(s, "}\n");
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}
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if (b->has_debug) {
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/* read optional debug information */
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bc_read_trace(s, "debug {\n");
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if (bc_get_atom(s, &b->debug.filename))
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/* read optional debug information */
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bc_read_trace(s, "debug {\n");
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if (bc_get_atom(s, &b->filename))
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goto fail;
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if (bc_get_leb128_int(s, &b->line_num))
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goto fail;
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if (bc_get_leb128_int(s, &b->col_num))
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goto fail;
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if (bc_get_leb128_int(s, &b->pc2line_len))
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goto fail;
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if (b->pc2line_len) {
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b->pc2line_buf = js_mallocz(ctx, b->pc2line_len);
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if (!b->pc2line_buf)
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goto fail;
|
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if (bc_get_leb128_int(s, &b->debug.line_num))
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if (bc_get_buf(s, b->pc2line_buf, b->pc2line_len))
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goto fail;
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if (bc_get_leb128_int(s, &b->debug.col_num))
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goto fail;
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if (bc_get_leb128_int(s, &b->debug.pc2line_len))
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goto fail;
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if (b->debug.pc2line_len) {
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b->debug.pc2line_buf = js_mallocz(ctx, b->debug.pc2line_len);
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if (!b->debug.pc2line_buf)
|
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}
|
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if (s->buf_end - s->ptr > 3 && s->ptr[0] == 255 &&
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s->ptr[1] == 73 && s->ptr[2] == 67) {
|
||||
s->ptr += 3;
|
||||
bc_get_leb128(s, &ic_len);
|
||||
if (ic_len == 0) {
|
||||
b->ic = NULL;
|
||||
} else {
|
||||
b->ic = init_ic(ctx);
|
||||
if (b->ic == NULL)
|
||||
goto fail;
|
||||
if (bc_get_buf(s, b->debug.pc2line_buf, b->debug.pc2line_len))
|
||||
goto fail;
|
||||
}
|
||||
if (s->buf_end - s->ptr > 3 && s->ptr[0] == 255 &&
|
||||
s->ptr[1] == 73 && s->ptr[2] == 67) {
|
||||
s->ptr += 3;
|
||||
bc_get_leb128(s, &ic_len);
|
||||
if (ic_len == 0) {
|
||||
b->ic = NULL;
|
||||
} else {
|
||||
b->ic = init_ic(ctx);
|
||||
if (b->ic == NULL)
|
||||
goto fail;
|
||||
for (i = 0; i < ic_len; i++) {
|
||||
bc_get_atom(s, &atom);
|
||||
add_ic_slot1(ctx, b->ic, atom);
|
||||
JS_FreeAtom(ctx, atom);
|
||||
}
|
||||
rebuild_ic(ctx, b->ic);
|
||||
for (i = 0; i < ic_len; i++) {
|
||||
bc_get_atom(s, &atom);
|
||||
add_ic_slot1(ctx, b->ic, atom);
|
||||
JS_FreeAtom(ctx, atom);
|
||||
}
|
||||
rebuild_ic(ctx, b->ic);
|
||||
}
|
||||
#ifdef DUMP_READ_OBJECT
|
||||
bc_read_trace(s, "filename: "); print_atom(s->ctx, b->debug.filename); printf("\n");
|
||||
bc_read_trace(s, "filename: "); print_atom(s->ctx, b->filename); printf("\n");
|
||||
#endif
|
||||
bc_read_trace(s, "}\n");
|
||||
}
|
||||
|
|
@ -35933,10 +35892,7 @@ static JSValue js_function_toString(JSContext *ctx, JSValue this_val,
|
|||
p = JS_VALUE_GET_OBJ(this_val);
|
||||
if (js_class_has_bytecode(p->class_id)) {
|
||||
JSFunctionBytecode *b = p->u.func.function_bytecode;
|
||||
if (b->has_debug && b->debug.source) {
|
||||
return JS_NewStringLen(ctx, b->debug.source, b->debug.source_len);
|
||||
}
|
||||
func_kind = b->func_kind;
|
||||
return JS_NewStringLen(ctx, b->source, b->source_len);
|
||||
}
|
||||
{
|
||||
JSValue name;
|
||||
|
|
@ -35983,10 +35939,10 @@ static const JSCFunctionListEntry js_function_proto_funcs[] = {
|
|||
JS_CFUNC_DEF("toString", 0, js_function_toString ),
|
||||
JS_CFUNC_DEF("[Symbol.hasInstance]", 1, js_function_hasInstance ),
|
||||
JS_CGETSET_DEF("fileName", js_function_proto_fileName, NULL ),
|
||||
JS_CGETSET_MAGIC_DEF("lineNumber", js_function_proto_debug_int32, NULL,
|
||||
offsetof(JSFunctionBytecode, debug.line_num)),
|
||||
JS_CGETSET_MAGIC_DEF("columnNumber", js_function_proto_debug_int32, NULL,
|
||||
offsetof(JSFunctionBytecode, debug.col_num)),
|
||||
JS_CGETSET_MAGIC_DEF("lineNumber", js_function_proto_int32, NULL,
|
||||
offsetof(JSFunctionBytecode, line_num)),
|
||||
JS_CGETSET_MAGIC_DEF("columnNumber", js_function_proto_int32, NULL,
|
||||
offsetof(JSFunctionBytecode, col_num)),
|
||||
};
|
||||
|
||||
/* Error class */
|
||||
|
|
|
|||
Loading…
Reference in a new issue