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8743732621
Previously, frames with iseq but no pc were skipped (even before
the refactoring in 3b24b7914c).
Because the entire backtrace was procesed before the refactoring,
this was handled by using later frames instead. However, after
the refactoring, we need to handle those frames or they get
lost.
Keep two iteration counters when iterating, one for the desired
backtrace size (so we generate the desired number of frames), and
one for the actual backtrace size (so we don't process off the end
of the stack). When skipping over an iseq frame with no pc,
decrement the counter for the desired backtrace, so it will
continue to process the expected number of backtrace frames.
Fixes [Bug #17581]
1721 lines
42 KiB
C
1721 lines
42 KiB
C
/**********************************************************************
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vm_backtrace.c -
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$Author: ko1 $
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created at: Sun Jun 03 00:14:20 2012
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Copyright (C) 1993-2012 Yukihiro Matsumoto
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**********************************************************************/
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#include "eval_intern.h"
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#include "internal.h"
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#include "internal/error.h"
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#include "internal/vm.h"
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#include "iseq.h"
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#include "ruby/debug.h"
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#include "ruby/encoding.h"
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#include "vm_core.h"
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static VALUE rb_cBacktrace;
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static VALUE rb_cBacktraceLocation;
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static VALUE
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id2str(ID id)
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{
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VALUE str = rb_id2str(id);
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if (!str) return Qnil;
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return str;
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}
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#define rb_id2str(id) id2str(id)
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#define BACKTRACE_START 0
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#define ALL_BACKTRACE_LINES -1
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inline static int
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calc_lineno(const rb_iseq_t *iseq, const VALUE *pc)
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{
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VM_ASSERT(iseq);
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VM_ASSERT(iseq->body);
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VM_ASSERT(iseq->body->iseq_encoded);
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VM_ASSERT(iseq->body->iseq_size);
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if (! pc) {
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/* This can happen during VM bootup. */
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VM_ASSERT(iseq->body->type == ISEQ_TYPE_TOP);
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VM_ASSERT(! iseq->body->local_table);
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VM_ASSERT(! iseq->body->local_table_size);
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return 0;
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}
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else {
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ptrdiff_t n = pc - iseq->body->iseq_encoded;
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VM_ASSERT(n <= iseq->body->iseq_size);
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VM_ASSERT(n >= 0);
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ASSUME(n >= 0);
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size_t pos = n; /* no overflow */
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if (LIKELY(pos)) {
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/* use pos-1 because PC points next instruction at the beginning of instruction */
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pos--;
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}
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#if VMDEBUG && defined(HAVE_BUILTIN___BUILTIN_TRAP)
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else {
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/* SDR() is not possible; that causes infinite loop. */
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rb_print_backtrace();
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__builtin_trap();
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}
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#endif
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return rb_iseq_line_no(iseq, pos);
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}
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}
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int
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rb_vm_get_sourceline(const rb_control_frame_t *cfp)
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{
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if (VM_FRAME_RUBYFRAME_P(cfp) && cfp->iseq) {
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const rb_iseq_t *iseq = cfp->iseq;
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int line = calc_lineno(iseq, cfp->pc);
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if (line != 0) {
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return line;
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}
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else {
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return FIX2INT(rb_iseq_first_lineno(iseq));
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}
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}
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else {
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return 0;
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}
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}
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typedef struct rb_backtrace_location_struct {
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enum LOCATION_TYPE {
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LOCATION_TYPE_ISEQ = 1,
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LOCATION_TYPE_ISEQ_CALCED,
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LOCATION_TYPE_CFUNC,
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} type;
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union {
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struct {
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const rb_iseq_t *iseq;
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union {
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const VALUE *pc;
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int lineno;
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} lineno;
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} iseq;
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struct {
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ID mid;
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struct rb_backtrace_location_struct *prev_loc;
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} cfunc;
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} body;
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} rb_backtrace_location_t;
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struct valued_frame_info {
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rb_backtrace_location_t *loc;
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VALUE btobj;
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};
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static void
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location_mark(void *ptr)
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{
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struct valued_frame_info *vfi = (struct valued_frame_info *)ptr;
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rb_gc_mark(vfi->btobj);
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}
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static void
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location_mark_entry(rb_backtrace_location_t *fi)
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{
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switch (fi->type) {
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case LOCATION_TYPE_ISEQ:
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case LOCATION_TYPE_ISEQ_CALCED:
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rb_gc_mark_movable((VALUE)fi->body.iseq.iseq);
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break;
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case LOCATION_TYPE_CFUNC:
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default:
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break;
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}
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}
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static size_t
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location_memsize(const void *ptr)
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{
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/* rb_backtrace_location_t *fi = (rb_backtrace_location_t *)ptr; */
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return sizeof(rb_backtrace_location_t);
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}
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static const rb_data_type_t location_data_type = {
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"frame_info",
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{location_mark, RUBY_TYPED_DEFAULT_FREE, location_memsize,},
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0, 0, RUBY_TYPED_FREE_IMMEDIATELY
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};
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static inline rb_backtrace_location_t *
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location_ptr(VALUE locobj)
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{
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struct valued_frame_info *vloc;
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GetCoreDataFromValue(locobj, struct valued_frame_info, vloc);
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return vloc->loc;
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}
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static int
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location_lineno(rb_backtrace_location_t *loc)
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{
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switch (loc->type) {
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case LOCATION_TYPE_ISEQ:
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loc->type = LOCATION_TYPE_ISEQ_CALCED;
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return (loc->body.iseq.lineno.lineno = calc_lineno(loc->body.iseq.iseq, loc->body.iseq.lineno.pc));
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case LOCATION_TYPE_ISEQ_CALCED:
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return loc->body.iseq.lineno.lineno;
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case LOCATION_TYPE_CFUNC:
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if (loc->body.cfunc.prev_loc) {
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return location_lineno(loc->body.cfunc.prev_loc);
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}
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return 0;
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default:
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rb_bug("location_lineno: unreachable");
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UNREACHABLE;
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}
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}
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/*
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* Returns the line number of this frame.
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*
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* For example, using +caller_locations.rb+ from Thread::Backtrace::Location
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*
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* loc = c(0..1).first
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* loc.lineno #=> 2
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*/
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static VALUE
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location_lineno_m(VALUE self)
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{
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return INT2FIX(location_lineno(location_ptr(self)));
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}
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static VALUE
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location_label(rb_backtrace_location_t *loc)
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{
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switch (loc->type) {
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case LOCATION_TYPE_ISEQ:
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case LOCATION_TYPE_ISEQ_CALCED:
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return loc->body.iseq.iseq->body->location.label;
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case LOCATION_TYPE_CFUNC:
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return rb_id2str(loc->body.cfunc.mid);
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default:
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rb_bug("location_label: unreachable");
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UNREACHABLE;
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}
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}
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/*
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* Returns the label of this frame.
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*
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* Usually consists of method, class, module, etc names with decoration.
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*
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* Consider the following example:
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*
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* def foo
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* puts caller_locations(0).first.label
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*
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* 1.times do
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* puts caller_locations(0).first.label
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*
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* 1.times do
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* puts caller_locations(0).first.label
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* end
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*
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* end
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* end
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*
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* The result of calling +foo+ is this:
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*
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* label: foo
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* label: block in foo
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* label: block (2 levels) in foo
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*
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*/
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static VALUE
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location_label_m(VALUE self)
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{
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return location_label(location_ptr(self));
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}
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static VALUE
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location_base_label(rb_backtrace_location_t *loc)
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{
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switch (loc->type) {
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case LOCATION_TYPE_ISEQ:
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case LOCATION_TYPE_ISEQ_CALCED:
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return loc->body.iseq.iseq->body->location.base_label;
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case LOCATION_TYPE_CFUNC:
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return rb_id2str(loc->body.cfunc.mid);
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default:
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rb_bug("location_base_label: unreachable");
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UNREACHABLE;
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}
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}
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/*
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* Returns the base label of this frame.
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*
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* Usually same as #label, without decoration.
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*/
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static VALUE
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location_base_label_m(VALUE self)
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{
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return location_base_label(location_ptr(self));
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}
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static VALUE
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location_path(rb_backtrace_location_t *loc)
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{
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switch (loc->type) {
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case LOCATION_TYPE_ISEQ:
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case LOCATION_TYPE_ISEQ_CALCED:
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return rb_iseq_path(loc->body.iseq.iseq);
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case LOCATION_TYPE_CFUNC:
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if (loc->body.cfunc.prev_loc) {
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return location_path(loc->body.cfunc.prev_loc);
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}
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return Qnil;
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default:
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rb_bug("location_path: unreachable");
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UNREACHABLE;
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}
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}
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/*
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* Returns the file name of this frame. This will generally be an absolute
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* path, unless the frame is in the main script, in which case it will be the
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* script location passed on the command line.
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*
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* For example, using +caller_locations.rb+ from Thread::Backtrace::Location
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*
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* loc = c(0..1).first
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* loc.path #=> caller_locations.rb
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*/
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static VALUE
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location_path_m(VALUE self)
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{
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return location_path(location_ptr(self));
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}
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static VALUE
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location_realpath(rb_backtrace_location_t *loc)
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{
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switch (loc->type) {
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case LOCATION_TYPE_ISEQ:
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case LOCATION_TYPE_ISEQ_CALCED:
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return rb_iseq_realpath(loc->body.iseq.iseq);
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case LOCATION_TYPE_CFUNC:
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if (loc->body.cfunc.prev_loc) {
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return location_realpath(loc->body.cfunc.prev_loc);
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}
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return Qnil;
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default:
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rb_bug("location_realpath: unreachable");
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UNREACHABLE;
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}
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}
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/*
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* Returns the full file path of this frame.
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*
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* Same as #path, except that it will return absolute path
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* even if the frame is in the main script.
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*/
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static VALUE
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location_absolute_path_m(VALUE self)
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{
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return location_realpath(location_ptr(self));
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}
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static VALUE
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location_format(VALUE file, int lineno, VALUE name)
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{
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VALUE s = rb_enc_sprintf(rb_enc_compatible(file, name), "%s", RSTRING_PTR(file));
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if (lineno != 0) {
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rb_str_catf(s, ":%d", lineno);
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}
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rb_str_cat_cstr(s, ":in ");
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if (NIL_P(name)) {
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rb_str_cat_cstr(s, "unknown method");
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}
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else {
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rb_str_catf(s, "`%s'", RSTRING_PTR(name));
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}
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return s;
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}
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static VALUE
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location_to_str(rb_backtrace_location_t *loc)
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{
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VALUE file, name;
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int lineno;
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switch (loc->type) {
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case LOCATION_TYPE_ISEQ:
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file = rb_iseq_path(loc->body.iseq.iseq);
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name = loc->body.iseq.iseq->body->location.label;
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lineno = loc->body.iseq.lineno.lineno = calc_lineno(loc->body.iseq.iseq, loc->body.iseq.lineno.pc);
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loc->type = LOCATION_TYPE_ISEQ_CALCED;
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break;
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case LOCATION_TYPE_ISEQ_CALCED:
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file = rb_iseq_path(loc->body.iseq.iseq);
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lineno = loc->body.iseq.lineno.lineno;
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name = loc->body.iseq.iseq->body->location.label;
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break;
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case LOCATION_TYPE_CFUNC:
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if (loc->body.cfunc.prev_loc) {
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file = rb_iseq_path(loc->body.cfunc.prev_loc->body.iseq.iseq);
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lineno = location_lineno(loc->body.cfunc.prev_loc);
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}
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else {
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file = GET_VM()->progname;
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lineno = 0;
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}
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name = rb_id2str(loc->body.cfunc.mid);
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break;
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default:
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rb_bug("location_to_str: unreachable");
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}
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return location_format(file, lineno, name);
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}
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/*
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* Returns a Kernel#caller style string representing this frame.
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*/
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static VALUE
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location_to_str_m(VALUE self)
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{
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return location_to_str(location_ptr(self));
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}
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/*
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* Returns the same as calling +inspect+ on the string representation of
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* #to_str
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*/
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static VALUE
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location_inspect_m(VALUE self)
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{
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return rb_str_inspect(location_to_str(location_ptr(self)));
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}
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typedef struct rb_backtrace_struct {
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rb_backtrace_location_t *backtrace;
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int backtrace_size;
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VALUE strary;
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VALUE locary;
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} rb_backtrace_t;
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static void
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backtrace_mark(void *ptr)
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{
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rb_backtrace_t *bt = (rb_backtrace_t *)ptr;
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size_t i, s = bt->backtrace_size;
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for (i=0; i<s; i++) {
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location_mark_entry(&bt->backtrace[i]);
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}
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rb_gc_mark_movable(bt->strary);
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rb_gc_mark_movable(bt->locary);
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}
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static void
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backtrace_free(void *ptr)
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{
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rb_backtrace_t *bt = (rb_backtrace_t *)ptr;
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if (bt->backtrace) ruby_xfree(bt->backtrace);
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ruby_xfree(bt);
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}
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static void
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location_update_entry(rb_backtrace_location_t *fi)
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{
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switch (fi->type) {
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case LOCATION_TYPE_ISEQ:
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case LOCATION_TYPE_ISEQ_CALCED:
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fi->body.iseq.iseq = (rb_iseq_t*)rb_gc_location((VALUE)fi->body.iseq.iseq);
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break;
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case LOCATION_TYPE_CFUNC:
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default:
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break;
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}
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}
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static void
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backtrace_update(void *ptr)
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{
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rb_backtrace_t *bt = (rb_backtrace_t *)ptr;
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size_t i, s = bt->backtrace_size;
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for (i=0; i<s; i++) {
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location_update_entry(&bt->backtrace[i]);
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}
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bt->strary = rb_gc_location(bt->strary);
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bt->locary = rb_gc_location(bt->locary);
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}
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static size_t
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backtrace_memsize(const void *ptr)
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{
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rb_backtrace_t *bt = (rb_backtrace_t *)ptr;
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return sizeof(rb_backtrace_t) + sizeof(rb_backtrace_location_t) * bt->backtrace_size;
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}
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static const rb_data_type_t backtrace_data_type = {
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"backtrace",
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{backtrace_mark, backtrace_free, backtrace_memsize, backtrace_update},
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0, 0, RUBY_TYPED_FREE_IMMEDIATELY
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};
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int
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rb_backtrace_p(VALUE obj)
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{
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return rb_typeddata_is_kind_of(obj, &backtrace_data_type);
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}
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static VALUE
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backtrace_alloc(VALUE klass)
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{
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rb_backtrace_t *bt;
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VALUE obj = TypedData_Make_Struct(klass, rb_backtrace_t, &backtrace_data_type, bt);
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return obj;
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}
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static long
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backtrace_size(const rb_execution_context_t *ec)
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{
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const rb_control_frame_t *last_cfp = ec->cfp;
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const rb_control_frame_t *start_cfp = RUBY_VM_END_CONTROL_FRAME(ec);
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if (start_cfp == NULL) {
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return -1;
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}
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start_cfp =
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RUBY_VM_NEXT_CONTROL_FRAME(
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RUBY_VM_NEXT_CONTROL_FRAME(start_cfp)); /* skip top frames */
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|
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if (start_cfp < last_cfp) {
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return 0;
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}
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return start_cfp - last_cfp + 1;
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}
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|
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static int
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backtrace_each(const rb_execution_context_t *ec,
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ptrdiff_t from_last,
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long num_frames,
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void (*init)(void *arg, size_t size),
|
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void (*iter_iseq)(void *arg, const rb_control_frame_t *cfp),
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void (*iter_cfunc)(void *arg, const rb_control_frame_t *cfp, ID mid),
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void (*iter_skip)(void *arg, const rb_control_frame_t *cfp),
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void *arg)
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|
{
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const rb_control_frame_t *last_cfp = ec->cfp;
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const rb_control_frame_t *start_cfp = RUBY_VM_END_CONTROL_FRAME(ec);
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const rb_control_frame_t *cfp;
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ptrdiff_t size, real_size, i, j, last, start = 0;
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int ret = 0;
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// In the case the thread vm_stack or cfp is not initialized, there is no backtrace.
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if (start_cfp == NULL) {
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init(arg, 0);
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return ret;
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}
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|
|
/* <- start_cfp (end control frame)
|
|
* top frame (dummy)
|
|
* top frame (dummy)
|
|
* top frame <- start_cfp
|
|
* top frame
|
|
* ...
|
|
* 2nd frame <- lev:0
|
|
* current frame <- ec->cfp
|
|
*/
|
|
|
|
start_cfp =
|
|
RUBY_VM_NEXT_CONTROL_FRAME(
|
|
RUBY_VM_NEXT_CONTROL_FRAME(start_cfp)); /* skip top frames */
|
|
|
|
if (start_cfp < last_cfp) {
|
|
real_size = size = last = 0;
|
|
}
|
|
else {
|
|
real_size = size = start_cfp - last_cfp + 1;
|
|
|
|
if (from_last > size) {
|
|
size = last = 0;
|
|
ret = 1;
|
|
}
|
|
else if (num_frames >= 0 && num_frames < size) {
|
|
if (from_last + num_frames > size) {
|
|
size -= from_last;
|
|
last = size;
|
|
}
|
|
else {
|
|
start = size - from_last - num_frames;
|
|
size = num_frames;
|
|
last = start + size;
|
|
}
|
|
}
|
|
else {
|
|
size -= from_last;
|
|
last = size;
|
|
}
|
|
}
|
|
|
|
init(arg, size);
|
|
|
|
/* SDR(); */
|
|
for (i=0, j=0, cfp = start_cfp; i<last && j<real_size; i++, j++, cfp = RUBY_VM_NEXT_CONTROL_FRAME(cfp)) {
|
|
if (i < start) {
|
|
if (iter_skip) {
|
|
iter_skip(arg, cfp);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* fprintf(stderr, "cfp: %d\n", (rb_control_frame_t *)(ec->vm_stack + ec->vm_stack_size) - cfp); */
|
|
if (cfp->iseq) {
|
|
if (cfp->pc) {
|
|
iter_iseq(arg, cfp);
|
|
} else {
|
|
i--;
|
|
}
|
|
}
|
|
else if (RUBYVM_CFUNC_FRAME_P(cfp)) {
|
|
const rb_callable_method_entry_t *me = rb_vm_frame_method_entry(cfp);
|
|
ID mid = me->def->original_id;
|
|
|
|
iter_cfunc(arg, cfp, mid);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct bt_iter_arg {
|
|
rb_backtrace_t *bt;
|
|
VALUE btobj;
|
|
rb_backtrace_location_t *prev_loc;
|
|
const rb_control_frame_t *prev_cfp;
|
|
rb_backtrace_location_t *init_loc;
|
|
};
|
|
|
|
static bool
|
|
is_internal_location(const rb_control_frame_t *cfp)
|
|
{
|
|
static const char prefix[] = "<internal:";
|
|
const size_t prefix_len = sizeof(prefix) - 1;
|
|
VALUE file = rb_iseq_path(cfp->iseq);
|
|
return strncmp(prefix, RSTRING_PTR(file), prefix_len) == 0;
|
|
}
|
|
|
|
static void
|
|
bt_init(void *ptr, size_t size)
|
|
{
|
|
struct bt_iter_arg *arg = (struct bt_iter_arg *)ptr;
|
|
arg->btobj = backtrace_alloc(rb_cBacktrace);
|
|
GetCoreDataFromValue(arg->btobj, rb_backtrace_t, arg->bt);
|
|
arg->bt->backtrace = ZALLOC_N(rb_backtrace_location_t, size+1);
|
|
arg->bt->backtrace_size = 1;
|
|
arg->prev_cfp = NULL;
|
|
arg->init_loc = &arg->bt->backtrace[size];
|
|
}
|
|
|
|
static void
|
|
bt_iter_iseq(void *ptr, const rb_control_frame_t *cfp)
|
|
{
|
|
const rb_iseq_t *iseq = cfp->iseq;
|
|
const VALUE *pc = cfp->pc;
|
|
struct bt_iter_arg *arg = (struct bt_iter_arg *)ptr;
|
|
rb_backtrace_location_t *loc = &arg->bt->backtrace[arg->bt->backtrace_size++-1];
|
|
loc->type = LOCATION_TYPE_ISEQ;
|
|
loc->body.iseq.iseq = iseq;
|
|
loc->body.iseq.lineno.pc = pc;
|
|
arg->prev_loc = loc;
|
|
}
|
|
|
|
static void
|
|
bt_iter_iseq_skip_internal(void *ptr, const rb_control_frame_t *cfp)
|
|
{
|
|
struct bt_iter_arg *arg = (struct bt_iter_arg *)ptr;
|
|
rb_backtrace_location_t *loc = &arg->bt->backtrace[arg->bt->backtrace_size++-1];
|
|
|
|
if (!is_internal_location(cfp)) {
|
|
loc->type = LOCATION_TYPE_ISEQ;
|
|
loc->body.iseq.iseq = cfp->iseq;
|
|
loc->body.iseq.lineno.pc = cfp->pc;
|
|
arg->prev_loc = loc;
|
|
} else if (arg->prev_cfp) {
|
|
loc->type = LOCATION_TYPE_ISEQ;
|
|
loc->body.iseq.iseq = arg->prev_cfp->iseq;
|
|
loc->body.iseq.lineno.pc = arg->prev_cfp->pc;
|
|
arg->prev_loc = loc;
|
|
} else {
|
|
rb_bug("No non-internal backtrace entry before an <internal: backtrace entry");
|
|
}
|
|
}
|
|
|
|
static void
|
|
bt_iter_cfunc(void *ptr, const rb_control_frame_t *cfp, ID mid)
|
|
{
|
|
struct bt_iter_arg *arg = (struct bt_iter_arg *)ptr;
|
|
rb_backtrace_location_t *loc = &arg->bt->backtrace[arg->bt->backtrace_size++-1];
|
|
loc->type = LOCATION_TYPE_CFUNC;
|
|
loc->body.cfunc.mid = mid;
|
|
if (arg->prev_loc) {
|
|
loc->body.cfunc.prev_loc = arg->prev_loc;
|
|
}
|
|
else if (arg->prev_cfp) {
|
|
const rb_iseq_t *iseq = arg->prev_cfp->iseq;
|
|
const VALUE *pc = arg->prev_cfp->pc;
|
|
arg->init_loc->type = LOCATION_TYPE_ISEQ;
|
|
arg->init_loc->body.iseq.iseq = iseq;
|
|
arg->init_loc->body.iseq.lineno.pc = pc;
|
|
loc->body.cfunc.prev_loc = arg->prev_loc = arg->init_loc;
|
|
} else {
|
|
loc->body.cfunc.prev_loc = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
bt_iter_skip(void *ptr, const rb_control_frame_t *cfp)
|
|
{
|
|
if (cfp->iseq && cfp->pc) {
|
|
((struct bt_iter_arg *)ptr)->prev_cfp = cfp;
|
|
}
|
|
}
|
|
|
|
static void
|
|
bt_iter_skip_skip_internal(void *ptr, const rb_control_frame_t *cfp)
|
|
{
|
|
if (cfp->iseq && cfp->pc) {
|
|
if (!is_internal_location(cfp)) {
|
|
((struct bt_iter_arg *) ptr)->prev_cfp = cfp;
|
|
}
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
rb_ec_partial_backtrace_object(const rb_execution_context_t *ec, long lev, long n, int* level_too_large, bool skip_internal)
|
|
{
|
|
struct bt_iter_arg arg;
|
|
int too_large;
|
|
arg.prev_loc = 0;
|
|
|
|
too_large = backtrace_each(ec,
|
|
lev,
|
|
n,
|
|
bt_init,
|
|
skip_internal ? bt_iter_iseq_skip_internal : bt_iter_iseq,
|
|
bt_iter_cfunc,
|
|
skip_internal ? bt_iter_skip_skip_internal : bt_iter_skip,
|
|
&arg);
|
|
|
|
if (level_too_large) *level_too_large = too_large;
|
|
|
|
return arg.btobj;
|
|
}
|
|
|
|
MJIT_FUNC_EXPORTED VALUE
|
|
rb_ec_backtrace_object(const rb_execution_context_t *ec)
|
|
{
|
|
return rb_ec_partial_backtrace_object(ec, BACKTRACE_START, ALL_BACKTRACE_LINES, NULL, FALSE);
|
|
}
|
|
|
|
static VALUE
|
|
backtrace_collect(rb_backtrace_t *bt, VALUE (*func)(rb_backtrace_location_t *, void *arg), void *arg)
|
|
{
|
|
VALUE btary;
|
|
int i;
|
|
|
|
btary = rb_ary_new2(bt->backtrace_size-1);
|
|
|
|
for (i=0; i<bt->backtrace_size-1; i++) {
|
|
rb_backtrace_location_t *loc = &bt->backtrace[bt->backtrace_size - 2 - i];
|
|
rb_ary_push(btary, func(loc, arg));
|
|
}
|
|
|
|
return btary;
|
|
}
|
|
|
|
static VALUE
|
|
location_to_str_dmyarg(rb_backtrace_location_t *loc, void *dmy)
|
|
{
|
|
return location_to_str(loc);
|
|
}
|
|
|
|
static VALUE
|
|
backtrace_to_str_ary(VALUE self)
|
|
{
|
|
VALUE r;
|
|
rb_backtrace_t *bt;
|
|
GetCoreDataFromValue(self, rb_backtrace_t, bt);
|
|
r = backtrace_collect(bt, location_to_str_dmyarg, 0);
|
|
RB_GC_GUARD(self);
|
|
return r;
|
|
}
|
|
|
|
VALUE
|
|
rb_backtrace_to_str_ary(VALUE self)
|
|
{
|
|
rb_backtrace_t *bt;
|
|
GetCoreDataFromValue(self, rb_backtrace_t, bt);
|
|
|
|
if (!bt->strary) {
|
|
bt->strary = backtrace_to_str_ary(self);
|
|
}
|
|
return bt->strary;
|
|
}
|
|
|
|
MJIT_FUNC_EXPORTED void
|
|
rb_backtrace_use_iseq_first_lineno_for_last_location(VALUE self)
|
|
{
|
|
const rb_backtrace_t *bt;
|
|
const rb_iseq_t *iseq;
|
|
rb_backtrace_location_t *loc;
|
|
|
|
GetCoreDataFromValue(self, rb_backtrace_t, bt);
|
|
VM_ASSERT(bt->backtrace_size > 1);
|
|
|
|
loc = &bt->backtrace[bt->backtrace_size - 2];
|
|
iseq = loc->body.iseq.iseq;
|
|
|
|
VM_ASSERT(loc->type == LOCATION_TYPE_ISEQ);
|
|
|
|
loc->body.iseq.lineno.lineno = FIX2INT(iseq->body->location.first_lineno);
|
|
loc->type = LOCATION_TYPE_ISEQ_CALCED;
|
|
}
|
|
|
|
static VALUE
|
|
location_create(rb_backtrace_location_t *srcloc, void *btobj)
|
|
{
|
|
VALUE obj;
|
|
struct valued_frame_info *vloc;
|
|
obj = TypedData_Make_Struct(rb_cBacktraceLocation, struct valued_frame_info, &location_data_type, vloc);
|
|
|
|
vloc->loc = srcloc;
|
|
vloc->btobj = (VALUE)btobj;
|
|
|
|
return obj;
|
|
}
|
|
|
|
static VALUE
|
|
backtrace_to_location_ary(VALUE self)
|
|
{
|
|
VALUE r;
|
|
rb_backtrace_t *bt;
|
|
GetCoreDataFromValue(self, rb_backtrace_t, bt);
|
|
r = backtrace_collect(bt, location_create, (void *)self);
|
|
RB_GC_GUARD(self);
|
|
return r;
|
|
}
|
|
|
|
VALUE
|
|
rb_backtrace_to_location_ary(VALUE self)
|
|
{
|
|
rb_backtrace_t *bt;
|
|
GetCoreDataFromValue(self, rb_backtrace_t, bt);
|
|
|
|
if (!bt->locary) {
|
|
bt->locary = backtrace_to_location_ary(self);
|
|
}
|
|
return bt->locary;
|
|
}
|
|
|
|
static VALUE
|
|
backtrace_dump_data(VALUE self)
|
|
{
|
|
VALUE str = rb_backtrace_to_str_ary(self);
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
backtrace_load_data(VALUE self, VALUE str)
|
|
{
|
|
rb_backtrace_t *bt;
|
|
GetCoreDataFromValue(self, rb_backtrace_t, bt);
|
|
bt->strary = str;
|
|
return self;
|
|
}
|
|
|
|
static VALUE
|
|
backtrace_limit(VALUE self)
|
|
{
|
|
return LONG2NUM(rb_backtrace_length_limit);
|
|
}
|
|
|
|
VALUE
|
|
rb_ec_backtrace_str_ary(const rb_execution_context_t *ec, long lev, long n)
|
|
{
|
|
return backtrace_to_str_ary(rb_ec_partial_backtrace_object(ec, lev, n, NULL, FALSE));
|
|
}
|
|
|
|
VALUE
|
|
rb_ec_backtrace_location_ary(const rb_execution_context_t *ec, long lev, long n, bool skip_internal)
|
|
{
|
|
return backtrace_to_location_ary(rb_ec_partial_backtrace_object(ec, lev, n, NULL, skip_internal));
|
|
}
|
|
|
|
/* make old style backtrace directly */
|
|
|
|
struct oldbt_arg {
|
|
VALUE filename;
|
|
int lineno;
|
|
void (*func)(void *data, VALUE file, int lineno, VALUE name);
|
|
void *data; /* result */
|
|
};
|
|
|
|
static void
|
|
oldbt_init(void *ptr, size_t dmy)
|
|
{
|
|
struct oldbt_arg *arg = (struct oldbt_arg *)ptr;
|
|
arg->filename = GET_VM()->progname;
|
|
arg->lineno = 0;
|
|
}
|
|
|
|
static void
|
|
oldbt_iter_iseq(void *ptr, const rb_control_frame_t *cfp)
|
|
{
|
|
const rb_iseq_t *iseq = cfp->iseq;
|
|
const VALUE *pc = cfp->pc;
|
|
struct oldbt_arg *arg = (struct oldbt_arg *)ptr;
|
|
VALUE file = arg->filename = rb_iseq_path(iseq);
|
|
VALUE name = iseq->body->location.label;
|
|
int lineno = arg->lineno = calc_lineno(iseq, pc);
|
|
|
|
(arg->func)(arg->data, file, lineno, name);
|
|
}
|
|
|
|
static void
|
|
oldbt_iter_cfunc(void *ptr, const rb_control_frame_t *cfp, ID mid)
|
|
{
|
|
struct oldbt_arg *arg = (struct oldbt_arg *)ptr;
|
|
VALUE file = arg->filename;
|
|
VALUE name = rb_id2str(mid);
|
|
int lineno = arg->lineno;
|
|
|
|
(arg->func)(arg->data, file, lineno, name);
|
|
}
|
|
|
|
static void
|
|
oldbt_print(void *data, VALUE file, int lineno, VALUE name)
|
|
{
|
|
FILE *fp = (FILE *)data;
|
|
|
|
if (NIL_P(name)) {
|
|
fprintf(fp, "\tfrom %s:%d:in unknown method\n",
|
|
RSTRING_PTR(file), lineno);
|
|
}
|
|
else {
|
|
fprintf(fp, "\tfrom %s:%d:in `%s'\n",
|
|
RSTRING_PTR(file), lineno, RSTRING_PTR(name));
|
|
}
|
|
}
|
|
|
|
static void
|
|
vm_backtrace_print(FILE *fp)
|
|
{
|
|
struct oldbt_arg arg;
|
|
|
|
arg.func = oldbt_print;
|
|
arg.data = (void *)fp;
|
|
backtrace_each(GET_EC(),
|
|
BACKTRACE_START,
|
|
ALL_BACKTRACE_LINES,
|
|
oldbt_init,
|
|
oldbt_iter_iseq,
|
|
oldbt_iter_cfunc,
|
|
NULL,
|
|
&arg);
|
|
}
|
|
|
|
static void
|
|
oldbt_bugreport(void *arg, VALUE file, int line, VALUE method)
|
|
{
|
|
const char *filename = NIL_P(file) ? "ruby" : RSTRING_PTR(file);
|
|
if (!*(int *)arg) {
|
|
fprintf(stderr, "-- Ruby level backtrace information "
|
|
"----------------------------------------\n");
|
|
*(int *)arg = 1;
|
|
}
|
|
if (NIL_P(method)) {
|
|
fprintf(stderr, "%s:%d:in unknown method\n", filename, line);
|
|
}
|
|
else {
|
|
fprintf(stderr, "%s:%d:in `%s'\n", filename, line, RSTRING_PTR(method));
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_backtrace_print_as_bugreport(void)
|
|
{
|
|
struct oldbt_arg arg;
|
|
int i = 0;
|
|
|
|
arg.func = oldbt_bugreport;
|
|
arg.data = (int *)&i;
|
|
|
|
backtrace_each(GET_EC(),
|
|
BACKTRACE_START,
|
|
ALL_BACKTRACE_LINES,
|
|
oldbt_init,
|
|
oldbt_iter_iseq,
|
|
oldbt_iter_cfunc,
|
|
NULL,
|
|
&arg);
|
|
}
|
|
|
|
void
|
|
rb_backtrace(void)
|
|
{
|
|
vm_backtrace_print(stderr);
|
|
}
|
|
|
|
struct print_to_arg {
|
|
VALUE (*iter)(VALUE recv, VALUE str);
|
|
VALUE output;
|
|
};
|
|
|
|
static void
|
|
oldbt_print_to(void *data, VALUE file, int lineno, VALUE name)
|
|
{
|
|
const struct print_to_arg *arg = data;
|
|
VALUE str = rb_sprintf("\tfrom %"PRIsVALUE":%d:in ", file, lineno);
|
|
|
|
if (NIL_P(name)) {
|
|
rb_str_cat2(str, "unknown method\n");
|
|
}
|
|
else {
|
|
rb_str_catf(str, " `%"PRIsVALUE"'\n", name);
|
|
}
|
|
(*arg->iter)(arg->output, str);
|
|
}
|
|
|
|
void
|
|
rb_backtrace_each(VALUE (*iter)(VALUE recv, VALUE str), VALUE output)
|
|
{
|
|
struct oldbt_arg arg;
|
|
struct print_to_arg parg;
|
|
|
|
parg.iter = iter;
|
|
parg.output = output;
|
|
arg.func = oldbt_print_to;
|
|
arg.data = &parg;
|
|
backtrace_each(GET_EC(),
|
|
BACKTRACE_START,
|
|
ALL_BACKTRACE_LINES,
|
|
oldbt_init,
|
|
oldbt_iter_iseq,
|
|
oldbt_iter_cfunc,
|
|
NULL,
|
|
&arg);
|
|
}
|
|
|
|
VALUE
|
|
rb_make_backtrace(void)
|
|
{
|
|
return rb_ec_backtrace_str_ary(GET_EC(), BACKTRACE_START, ALL_BACKTRACE_LINES);
|
|
}
|
|
|
|
static VALUE
|
|
ec_backtrace_to_ary(const rb_execution_context_t *ec, int argc, const VALUE *argv, int lev_default, int lev_plus, int to_str)
|
|
{
|
|
VALUE level, vn;
|
|
long lev, n;
|
|
VALUE btval;
|
|
VALUE r;
|
|
int too_large;
|
|
|
|
rb_scan_args(argc, argv, "02", &level, &vn);
|
|
|
|
if (argc == 2 && NIL_P(vn)) argc--;
|
|
|
|
switch (argc) {
|
|
case 0:
|
|
lev = lev_default + lev_plus;
|
|
n = ALL_BACKTRACE_LINES;
|
|
break;
|
|
case 1:
|
|
{
|
|
long beg, len, bt_size = backtrace_size(ec);
|
|
switch (rb_range_beg_len(level, &beg, &len, bt_size - lev_plus, 0)) {
|
|
case Qfalse:
|
|
lev = NUM2LONG(level);
|
|
if (lev < 0) {
|
|
rb_raise(rb_eArgError, "negative level (%ld)", lev);
|
|
}
|
|
lev += lev_plus;
|
|
n = ALL_BACKTRACE_LINES;
|
|
break;
|
|
case Qnil:
|
|
return Qnil;
|
|
default:
|
|
lev = beg + lev_plus;
|
|
n = len;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case 2:
|
|
lev = NUM2LONG(level);
|
|
n = NUM2LONG(vn);
|
|
if (lev < 0) {
|
|
rb_raise(rb_eArgError, "negative level (%ld)", lev);
|
|
}
|
|
if (n < 0) {
|
|
rb_raise(rb_eArgError, "negative size (%ld)", n);
|
|
}
|
|
lev += lev_plus;
|
|
break;
|
|
default:
|
|
lev = n = 0; /* to avoid warning */
|
|
break;
|
|
}
|
|
|
|
if (n == 0) {
|
|
return rb_ary_new();
|
|
}
|
|
|
|
btval = rb_ec_partial_backtrace_object(ec, lev, n, &too_large, FALSE);
|
|
|
|
if (too_large) {
|
|
return Qnil;
|
|
}
|
|
|
|
if (to_str) {
|
|
r = backtrace_to_str_ary(btval);
|
|
}
|
|
else {
|
|
r = backtrace_to_location_ary(btval);
|
|
}
|
|
RB_GC_GUARD(btval);
|
|
return r;
|
|
}
|
|
|
|
static VALUE
|
|
thread_backtrace_to_ary(int argc, const VALUE *argv, VALUE thval, int to_str)
|
|
{
|
|
rb_thread_t *target_th = rb_thread_ptr(thval);
|
|
|
|
if (target_th->to_kill || target_th->status == THREAD_KILLED)
|
|
return Qnil;
|
|
|
|
return ec_backtrace_to_ary(target_th->ec, argc, argv, 0, 0, to_str);
|
|
}
|
|
|
|
VALUE
|
|
rb_vm_thread_backtrace(int argc, const VALUE *argv, VALUE thval)
|
|
{
|
|
return thread_backtrace_to_ary(argc, argv, thval, 1);
|
|
}
|
|
|
|
VALUE
|
|
rb_vm_thread_backtrace_locations(int argc, const VALUE *argv, VALUE thval)
|
|
{
|
|
return thread_backtrace_to_ary(argc, argv, thval, 0);
|
|
}
|
|
|
|
VALUE rb_vm_backtrace(int argc, const VALUE * argv, struct rb_execution_context_struct * ec)
|
|
{
|
|
return ec_backtrace_to_ary(ec, argc, argv, 0, 0, 1);
|
|
}
|
|
|
|
VALUE rb_vm_backtrace_locations(int argc, const VALUE * argv, struct rb_execution_context_struct * ec)
|
|
{
|
|
return ec_backtrace_to_ary(ec, argc, argv, 0, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* caller(start=1, length=nil) -> array or nil
|
|
* caller(range) -> array or nil
|
|
*
|
|
* Returns the current execution stack---an array containing strings in
|
|
* the form <code>file:line</code> or <code>file:line: in
|
|
* `method'</code>.
|
|
*
|
|
* The optional _start_ parameter determines the number of initial stack
|
|
* entries to omit from the top of the stack.
|
|
*
|
|
* A second optional +length+ parameter can be used to limit how many entries
|
|
* are returned from the stack.
|
|
*
|
|
* Returns +nil+ if _start_ is greater than the size of
|
|
* current execution stack.
|
|
*
|
|
* Optionally you can pass a range, which will return an array containing the
|
|
* entries within the specified range.
|
|
*
|
|
* def a(skip)
|
|
* caller(skip)
|
|
* end
|
|
* def b(skip)
|
|
* a(skip)
|
|
* end
|
|
* def c(skip)
|
|
* b(skip)
|
|
* end
|
|
* c(0) #=> ["prog:2:in `a'", "prog:5:in `b'", "prog:8:in `c'", "prog:10:in `<main>'"]
|
|
* c(1) #=> ["prog:5:in `b'", "prog:8:in `c'", "prog:11:in `<main>'"]
|
|
* c(2) #=> ["prog:8:in `c'", "prog:12:in `<main>'"]
|
|
* c(3) #=> ["prog:13:in `<main>'"]
|
|
* c(4) #=> []
|
|
* c(5) #=> nil
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_caller(int argc, VALUE *argv, VALUE _)
|
|
{
|
|
return ec_backtrace_to_ary(GET_EC(), argc, argv, 1, 1, 1);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* caller_locations(start=1, length=nil) -> array or nil
|
|
* caller_locations(range) -> array or nil
|
|
*
|
|
* Returns the current execution stack---an array containing
|
|
* backtrace location objects.
|
|
*
|
|
* See Thread::Backtrace::Location for more information.
|
|
*
|
|
* The optional _start_ parameter determines the number of initial stack
|
|
* entries to omit from the top of the stack.
|
|
*
|
|
* A second optional +length+ parameter can be used to limit how many entries
|
|
* are returned from the stack.
|
|
*
|
|
* Returns +nil+ if _start_ is greater than the size of
|
|
* current execution stack.
|
|
*
|
|
* Optionally you can pass a range, which will return an array containing the
|
|
* entries within the specified range.
|
|
*/
|
|
static VALUE
|
|
rb_f_caller_locations(int argc, VALUE *argv, VALUE _)
|
|
{
|
|
return ec_backtrace_to_ary(GET_EC(), argc, argv, 1, 1, 0);
|
|
}
|
|
|
|
/* called from Init_vm() in vm.c */
|
|
void
|
|
Init_vm_backtrace(void)
|
|
{
|
|
/* :nodoc: */
|
|
rb_cBacktrace = rb_define_class_under(rb_cThread, "Backtrace", rb_cObject);
|
|
rb_define_alloc_func(rb_cBacktrace, backtrace_alloc);
|
|
rb_undef_method(CLASS_OF(rb_cBacktrace), "new");
|
|
rb_marshal_define_compat(rb_cBacktrace, rb_cArray, backtrace_dump_data, backtrace_load_data);
|
|
rb_define_singleton_method(rb_cBacktrace, "limit", backtrace_limit, 0);
|
|
|
|
/*
|
|
* An object representation of a stack frame, initialized by
|
|
* Kernel#caller_locations.
|
|
*
|
|
* For example:
|
|
*
|
|
* # caller_locations.rb
|
|
* def a(skip)
|
|
* caller_locations(skip)
|
|
* end
|
|
* def b(skip)
|
|
* a(skip)
|
|
* end
|
|
* def c(skip)
|
|
* b(skip)
|
|
* end
|
|
*
|
|
* c(0..2).map do |call|
|
|
* puts call.to_s
|
|
* end
|
|
*
|
|
* Running <code>ruby caller_locations.rb</code> will produce:
|
|
*
|
|
* caller_locations.rb:2:in `a'
|
|
* caller_locations.rb:5:in `b'
|
|
* caller_locations.rb:8:in `c'
|
|
*
|
|
* Here's another example with a slightly different result:
|
|
*
|
|
* # foo.rb
|
|
* class Foo
|
|
* attr_accessor :locations
|
|
* def initialize(skip)
|
|
* @locations = caller_locations(skip)
|
|
* end
|
|
* end
|
|
*
|
|
* Foo.new(0..2).locations.map do |call|
|
|
* puts call.to_s
|
|
* end
|
|
*
|
|
* Now run <code>ruby foo.rb</code> and you should see:
|
|
*
|
|
* init.rb:4:in `initialize'
|
|
* init.rb:8:in `new'
|
|
* init.rb:8:in `<main>'
|
|
*/
|
|
rb_cBacktraceLocation = rb_define_class_under(rb_cBacktrace, "Location", rb_cObject);
|
|
rb_undef_alloc_func(rb_cBacktraceLocation);
|
|
rb_undef_method(CLASS_OF(rb_cBacktraceLocation), "new");
|
|
rb_define_method(rb_cBacktraceLocation, "lineno", location_lineno_m, 0);
|
|
rb_define_method(rb_cBacktraceLocation, "label", location_label_m, 0);
|
|
rb_define_method(rb_cBacktraceLocation, "base_label", location_base_label_m, 0);
|
|
rb_define_method(rb_cBacktraceLocation, "path", location_path_m, 0);
|
|
rb_define_method(rb_cBacktraceLocation, "absolute_path", location_absolute_path_m, 0);
|
|
rb_define_method(rb_cBacktraceLocation, "to_s", location_to_str_m, 0);
|
|
rb_define_method(rb_cBacktraceLocation, "inspect", location_inspect_m, 0);
|
|
|
|
rb_define_global_function("caller", rb_f_caller, -1);
|
|
rb_define_global_function("caller_locations", rb_f_caller_locations, -1);
|
|
}
|
|
|
|
/* debugger API */
|
|
|
|
RUBY_SYMBOL_EXPORT_BEGIN
|
|
|
|
RUBY_SYMBOL_EXPORT_END
|
|
|
|
struct rb_debug_inspector_struct {
|
|
rb_execution_context_t *ec;
|
|
rb_control_frame_t *cfp;
|
|
VALUE backtrace;
|
|
VALUE contexts; /* [[klass, binding, iseq, cfp], ...] */
|
|
long backtrace_size;
|
|
};
|
|
|
|
enum {
|
|
CALLER_BINDING_SELF,
|
|
CALLER_BINDING_CLASS,
|
|
CALLER_BINDING_BINDING,
|
|
CALLER_BINDING_ISEQ,
|
|
CALLER_BINDING_CFP
|
|
};
|
|
|
|
struct collect_caller_bindings_data {
|
|
VALUE ary;
|
|
};
|
|
|
|
static void
|
|
collect_caller_bindings_init(void *arg, size_t size)
|
|
{
|
|
/* */
|
|
}
|
|
|
|
static VALUE
|
|
get_klass(const rb_control_frame_t *cfp)
|
|
{
|
|
VALUE klass;
|
|
if (rb_vm_control_frame_id_and_class(cfp, 0, 0, &klass)) {
|
|
if (RB_TYPE_P(klass, T_ICLASS)) {
|
|
return RBASIC(klass)->klass;
|
|
}
|
|
else {
|
|
return klass;
|
|
}
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
static void
|
|
collect_caller_bindings_iseq(void *arg, const rb_control_frame_t *cfp)
|
|
{
|
|
struct collect_caller_bindings_data *data = (struct collect_caller_bindings_data *)arg;
|
|
VALUE frame = rb_ary_new2(5);
|
|
|
|
rb_ary_store(frame, CALLER_BINDING_SELF, cfp->self);
|
|
rb_ary_store(frame, CALLER_BINDING_CLASS, get_klass(cfp));
|
|
rb_ary_store(frame, CALLER_BINDING_BINDING, GC_GUARDED_PTR(cfp)); /* create later */
|
|
rb_ary_store(frame, CALLER_BINDING_ISEQ, cfp->iseq ? (VALUE)cfp->iseq : Qnil);
|
|
rb_ary_store(frame, CALLER_BINDING_CFP, GC_GUARDED_PTR(cfp));
|
|
|
|
rb_ary_push(data->ary, frame);
|
|
}
|
|
|
|
static void
|
|
collect_caller_bindings_cfunc(void *arg, const rb_control_frame_t *cfp, ID mid)
|
|
{
|
|
struct collect_caller_bindings_data *data = (struct collect_caller_bindings_data *)arg;
|
|
VALUE frame = rb_ary_new2(5);
|
|
|
|
rb_ary_store(frame, CALLER_BINDING_SELF, cfp->self);
|
|
rb_ary_store(frame, CALLER_BINDING_CLASS, get_klass(cfp));
|
|
rb_ary_store(frame, CALLER_BINDING_BINDING, Qnil); /* not available */
|
|
rb_ary_store(frame, CALLER_BINDING_ISEQ, Qnil); /* not available */
|
|
rb_ary_store(frame, CALLER_BINDING_CFP, GC_GUARDED_PTR(cfp));
|
|
|
|
rb_ary_push(data->ary, frame);
|
|
}
|
|
|
|
static VALUE
|
|
collect_caller_bindings(const rb_execution_context_t *ec)
|
|
{
|
|
struct collect_caller_bindings_data data;
|
|
VALUE result;
|
|
int i;
|
|
|
|
data.ary = rb_ary_new();
|
|
|
|
backtrace_each(ec,
|
|
BACKTRACE_START,
|
|
ALL_BACKTRACE_LINES,
|
|
collect_caller_bindings_init,
|
|
collect_caller_bindings_iseq,
|
|
collect_caller_bindings_cfunc,
|
|
NULL,
|
|
&data);
|
|
|
|
result = rb_ary_reverse(data.ary);
|
|
|
|
/* bindings should be created from top of frame */
|
|
for (i=0; i<RARRAY_LEN(result); i++) {
|
|
VALUE entry = rb_ary_entry(result, i);
|
|
VALUE cfp_val = rb_ary_entry(entry, CALLER_BINDING_BINDING);
|
|
|
|
if (!NIL_P(cfp_val)) {
|
|
rb_control_frame_t *cfp = GC_GUARDED_PTR_REF(cfp_val);
|
|
rb_ary_store(entry, CALLER_BINDING_BINDING, rb_vm_make_binding(ec, cfp));
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Note that the passed `rb_debug_inspector_t' will be disabled
|
|
* after `rb_debug_inspector_open'.
|
|
*/
|
|
|
|
VALUE
|
|
rb_debug_inspector_open(rb_debug_inspector_func_t func, void *data)
|
|
{
|
|
rb_debug_inspector_t dbg_context;
|
|
rb_execution_context_t *ec = GET_EC();
|
|
enum ruby_tag_type state;
|
|
volatile VALUE MAYBE_UNUSED(result);
|
|
|
|
/* escape all env to heap */
|
|
rb_vm_stack_to_heap(ec);
|
|
|
|
dbg_context.ec = ec;
|
|
dbg_context.cfp = dbg_context.ec->cfp;
|
|
dbg_context.backtrace = rb_ec_backtrace_location_ary(ec, BACKTRACE_START, ALL_BACKTRACE_LINES, FALSE);
|
|
dbg_context.backtrace_size = RARRAY_LEN(dbg_context.backtrace);
|
|
dbg_context.contexts = collect_caller_bindings(ec);
|
|
|
|
EC_PUSH_TAG(ec);
|
|
if ((state = EC_EXEC_TAG()) == TAG_NONE) {
|
|
result = (*func)(&dbg_context, data);
|
|
}
|
|
EC_POP_TAG();
|
|
|
|
/* invalidate bindings? */
|
|
|
|
if (state) {
|
|
EC_JUMP_TAG(ec, state);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static VALUE
|
|
frame_get(const rb_debug_inspector_t *dc, long index)
|
|
{
|
|
if (index < 0 || index >= dc->backtrace_size) {
|
|
rb_raise(rb_eArgError, "no such frame");
|
|
}
|
|
return rb_ary_entry(dc->contexts, index);
|
|
}
|
|
|
|
VALUE
|
|
rb_debug_inspector_frame_self_get(const rb_debug_inspector_t *dc, long index)
|
|
{
|
|
VALUE frame = frame_get(dc, index);
|
|
return rb_ary_entry(frame, CALLER_BINDING_SELF);
|
|
}
|
|
|
|
VALUE
|
|
rb_debug_inspector_frame_class_get(const rb_debug_inspector_t *dc, long index)
|
|
{
|
|
VALUE frame = frame_get(dc, index);
|
|
return rb_ary_entry(frame, CALLER_BINDING_CLASS);
|
|
}
|
|
|
|
VALUE
|
|
rb_debug_inspector_frame_binding_get(const rb_debug_inspector_t *dc, long index)
|
|
{
|
|
VALUE frame = frame_get(dc, index);
|
|
return rb_ary_entry(frame, CALLER_BINDING_BINDING);
|
|
}
|
|
|
|
VALUE
|
|
rb_debug_inspector_frame_iseq_get(const rb_debug_inspector_t *dc, long index)
|
|
{
|
|
VALUE frame = frame_get(dc, index);
|
|
VALUE iseq = rb_ary_entry(frame, CALLER_BINDING_ISEQ);
|
|
|
|
return RTEST(iseq) ? rb_iseqw_new((rb_iseq_t *)iseq) : Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_debug_inspector_backtrace_locations(const rb_debug_inspector_t *dc)
|
|
{
|
|
return dc->backtrace;
|
|
}
|
|
|
|
int
|
|
rb_profile_frames(int start, int limit, VALUE *buff, int *lines)
|
|
{
|
|
int i;
|
|
const rb_execution_context_t *ec = GET_EC();
|
|
const rb_control_frame_t *cfp = ec->cfp, *end_cfp = RUBY_VM_END_CONTROL_FRAME(ec);
|
|
const rb_callable_method_entry_t *cme;
|
|
|
|
for (i=0; i<limit && cfp != end_cfp;) {
|
|
if (VM_FRAME_RUBYFRAME_P(cfp)) {
|
|
if (start > 0) {
|
|
start--;
|
|
continue;
|
|
}
|
|
|
|
/* record frame info */
|
|
cme = rb_vm_frame_method_entry(cfp);
|
|
if (cme && cme->def->type == VM_METHOD_TYPE_ISEQ) {
|
|
buff[i] = (VALUE)cme;
|
|
}
|
|
else {
|
|
buff[i] = (VALUE)cfp->iseq;
|
|
}
|
|
|
|
if (lines) lines[i] = calc_lineno(cfp->iseq, cfp->pc);
|
|
|
|
i++;
|
|
}
|
|
else {
|
|
cme = rb_vm_frame_method_entry(cfp);
|
|
if (cme && cme->def->type == VM_METHOD_TYPE_CFUNC) {
|
|
buff[i] = (VALUE)cme;
|
|
if (lines) lines[i] = 0;
|
|
i++;
|
|
}
|
|
}
|
|
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static const rb_iseq_t *
|
|
frame2iseq(VALUE frame)
|
|
{
|
|
if (frame == Qnil) return NULL;
|
|
|
|
if (RB_TYPE_P(frame, T_IMEMO)) {
|
|
switch (imemo_type(frame)) {
|
|
case imemo_iseq:
|
|
return (const rb_iseq_t *)frame;
|
|
case imemo_ment:
|
|
{
|
|
const rb_callable_method_entry_t *cme = (rb_callable_method_entry_t *)frame;
|
|
switch (cme->def->type) {
|
|
case VM_METHOD_TYPE_ISEQ:
|
|
return cme->def->body.iseq.iseqptr;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
rb_bug("frame2iseq: unreachable");
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_path(VALUE frame)
|
|
{
|
|
const rb_iseq_t *iseq = frame2iseq(frame);
|
|
return iseq ? rb_iseq_path(iseq) : Qnil;
|
|
}
|
|
|
|
static const rb_callable_method_entry_t *
|
|
cframe(VALUE frame)
|
|
{
|
|
if (frame == Qnil) return NULL;
|
|
|
|
if (RB_TYPE_P(frame, T_IMEMO)) {
|
|
switch (imemo_type(frame)) {
|
|
case imemo_ment:
|
|
{
|
|
const rb_callable_method_entry_t *cme = (rb_callable_method_entry_t *)frame;
|
|
switch (cme->def->type) {
|
|
case VM_METHOD_TYPE_CFUNC:
|
|
return cme;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_absolute_path(VALUE frame)
|
|
{
|
|
if (cframe(frame)) {
|
|
static VALUE cfunc_str = Qfalse;
|
|
if (!cfunc_str) {
|
|
cfunc_str = rb_str_new_literal("<cfunc>");
|
|
rb_gc_register_mark_object(cfunc_str);
|
|
}
|
|
return cfunc_str;
|
|
}
|
|
const rb_iseq_t *iseq = frame2iseq(frame);
|
|
return iseq ? rb_iseq_realpath(iseq) : Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_label(VALUE frame)
|
|
{
|
|
const rb_iseq_t *iseq = frame2iseq(frame);
|
|
return iseq ? rb_iseq_label(iseq) : Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_base_label(VALUE frame)
|
|
{
|
|
const rb_iseq_t *iseq = frame2iseq(frame);
|
|
return iseq ? rb_iseq_base_label(iseq) : Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_first_lineno(VALUE frame)
|
|
{
|
|
const rb_iseq_t *iseq = frame2iseq(frame);
|
|
return iseq ? rb_iseq_first_lineno(iseq) : Qnil;
|
|
}
|
|
|
|
static VALUE
|
|
frame2klass(VALUE frame)
|
|
{
|
|
if (frame == Qnil) return Qnil;
|
|
|
|
if (RB_TYPE_P(frame, T_IMEMO)) {
|
|
const rb_callable_method_entry_t *cme = (rb_callable_method_entry_t *)frame;
|
|
|
|
if (imemo_type(frame) == imemo_ment) {
|
|
return cme->defined_class;
|
|
}
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_classpath(VALUE frame)
|
|
{
|
|
VALUE klass = frame2klass(frame);
|
|
|
|
if (klass && !NIL_P(klass)) {
|
|
if (RB_TYPE_P(klass, T_ICLASS)) {
|
|
klass = RBASIC(klass)->klass;
|
|
}
|
|
else if (FL_TEST(klass, FL_SINGLETON)) {
|
|
klass = rb_ivar_get(klass, id__attached__);
|
|
if (!RB_TYPE_P(klass, T_CLASS) && !RB_TYPE_P(klass, T_MODULE))
|
|
return rb_sprintf("#<%s:%p>", rb_class2name(rb_obj_class(klass)), (void*)klass);
|
|
}
|
|
return rb_class_path(klass);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_singleton_method_p(VALUE frame)
|
|
{
|
|
VALUE klass = frame2klass(frame);
|
|
|
|
if (klass && !NIL_P(klass) && FL_TEST(klass, FL_SINGLETON)) {
|
|
return Qtrue;
|
|
}
|
|
else {
|
|
return Qfalse;
|
|
}
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_method_name(VALUE frame)
|
|
{
|
|
const rb_callable_method_entry_t *cme = cframe(frame);
|
|
if (cme) {
|
|
ID mid = cme->def->original_id;
|
|
return id2str(mid);
|
|
}
|
|
const rb_iseq_t *iseq = frame2iseq(frame);
|
|
return iseq ? rb_iseq_method_name(iseq) : Qnil;
|
|
}
|
|
|
|
static VALUE
|
|
qualified_method_name(VALUE frame, VALUE method_name)
|
|
{
|
|
if (method_name != Qnil) {
|
|
VALUE classpath = rb_profile_frame_classpath(frame);
|
|
VALUE singleton_p = rb_profile_frame_singleton_method_p(frame);
|
|
|
|
if (classpath != Qnil) {
|
|
return rb_sprintf("%"PRIsVALUE"%s%"PRIsVALUE,
|
|
classpath, singleton_p == Qtrue ? "." : "#", method_name);
|
|
}
|
|
else {
|
|
return method_name;
|
|
}
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_qualified_method_name(VALUE frame)
|
|
{
|
|
VALUE method_name = rb_profile_frame_method_name(frame);
|
|
|
|
return qualified_method_name(frame, method_name);
|
|
}
|
|
|
|
VALUE
|
|
rb_profile_frame_full_label(VALUE frame)
|
|
{
|
|
const rb_callable_method_entry_t *cme = cframe(frame);
|
|
if (cme) {
|
|
ID mid = cme->def->original_id;
|
|
VALUE method_name = id2str(mid);
|
|
return qualified_method_name(frame, method_name);
|
|
}
|
|
|
|
VALUE label = rb_profile_frame_label(frame);
|
|
VALUE base_label = rb_profile_frame_base_label(frame);
|
|
VALUE qualified_method_name = rb_profile_frame_qualified_method_name(frame);
|
|
|
|
if (NIL_P(qualified_method_name) || base_label == qualified_method_name) {
|
|
return label;
|
|
}
|
|
else {
|
|
long label_length = RSTRING_LEN(label);
|
|
long base_label_length = RSTRING_LEN(base_label);
|
|
int prefix_len = rb_long2int(label_length - base_label_length);
|
|
|
|
return rb_sprintf("%.*s%"PRIsVALUE, prefix_len, RSTRING_PTR(label), qualified_method_name);
|
|
}
|
|
}
|