diff options
Diffstat (limited to 'vm_backtrace.c')
-rw-r--r-- | vm_backtrace.c | 156 |
1 files changed, 148 insertions, 8 deletions
diff --git a/vm_backtrace.c b/vm_backtrace.c index a15c533bf8..a87cbc9fb2 100644 --- a/vm_backtrace.c +++ b/vm_backtrace.c @@ -11,9 +11,11 @@ #include "ruby/ruby.h" #include "ruby/encoding.h" +#include "ruby/debug.h" #include "internal.h" #include "vm_core.h" +#include "eval_intern.h" #include "iseq.h" static VALUE rb_cBacktrace; @@ -358,8 +360,8 @@ backtrace_alloc(VALUE klass) static void backtrace_each(rb_thread_t *th, void (*init)(void *arg, size_t size), - void (*iter_iseq)(void *arg, const rb_iseq_t *iseq, const VALUE *pc), - void (*iter_cfunc)(void *arg, ID mid), + void (*iter_iseq)(void *arg, const rb_control_frame_t *cfp), + void (*iter_cfunc)(void *arg, const rb_control_frame_t *cfp, ID mid), void *arg) { rb_control_frame_t *last_cfp = th->cfp; @@ -395,13 +397,13 @@ backtrace_each(rb_thread_t *th, /* fprintf(stderr, "cfp: %d\n", (rb_control_frame_t *)(th->stack + th->stack_size) - cfp); */ if (cfp->iseq) { if (cfp->pc) { - iter_iseq(arg, cfp->iseq, cfp->pc); + iter_iseq(arg, cfp); } } else if (RUBYVM_CFUNC_FRAME_P(cfp)) { ID mid = cfp->me->def ? cfp->me->def->original_id : cfp->me->called_id; - iter_cfunc(arg, mid); + iter_cfunc(arg, cfp, mid); } } } @@ -423,8 +425,10 @@ bt_init(void *ptr, size_t size) } static void -bt_iter_iseq(void *ptr, const rb_iseq_t *iseq, const VALUE *pc) +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++]; loc->type = LOCATION_TYPE_ISEQ; @@ -434,7 +438,7 @@ bt_iter_iseq(void *ptr, const rb_iseq_t *iseq, const VALUE *pc) } static void -bt_iter_cfunc(void *ptr, ID mid) +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++]; @@ -599,8 +603,10 @@ oldbt_init(void *ptr, size_t dmy) } static void -oldbt_iter_iseq(void *ptr, const rb_iseq_t *iseq, const VALUE *pc) +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 = iseq->location.path; VALUE name = iseq->location.label; @@ -610,7 +616,7 @@ oldbt_iter_iseq(void *ptr, const rb_iseq_t *iseq, const VALUE *pc) } static void -oldbt_iter_cfunc(void *ptr, ID mid) +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; @@ -846,3 +852,137 @@ Init_vm_backtrace(void) rb_define_global_function("caller", rb_f_caller, -1); rb_define_global_function("caller_locations", rb_f_caller_locations, -1); } + +/* debugger API */ + +#if defined __GNUC__ && __GNUC__ >= 4 +#pragma GCC visibility push(default) +#endif + +#if defined __GNUC__ && __GNUC__ >= 4 +#pragma GCC visibility pop +#endif + +struct rb_debug_inspector_struct { + rb_thread_t *th; + rb_control_frame_t *cfp; + VALUE backtrace; + VALUE contexts; /* [[klass, binding, iseq, cfp], ...] */ + int backtrace_size; +}; + +struct collect_caller_bindings_data { + rb_thread_t *th; + VALUE ary; +}; + +static void +collect_caller_bindings_init(void *arg, size_t size) +{ + /* */ +} + +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; + rb_ary_push(data->ary, + rb_ary_new3(4, + cfp->klass, + rb_binding_new_with_cfp(data->th, cfp), + cfp->iseq ? cfp->iseq->self : Qnil, + GC_GUARDED_PTR(cfp))); +} + +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; + rb_ary_push(data->ary, rb_ary_new3(2, cfp->klass, Qnil)); +} + +static VALUE +collect_caller_bindings(rb_thread_t *th) +{ + struct collect_caller_bindings_data data; + data.ary = rb_ary_new(); + data.th = th; + backtrace_each(th, + collect_caller_bindings_init, + collect_caller_bindings_iseq, + collect_caller_bindings_cfunc, + &data); + return rb_ary_reverse(data.ary); +} + +/* + * 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_thread_t *th = GET_THREAD(); + int state; + VALUE result; + + dbg_context.th = th; + dbg_context.cfp = dbg_context.th->cfp; + dbg_context.backtrace = vm_backtrace_location_ary(th, 0, 0); + dbg_context.backtrace_size = RARRAY_LEN(dbg_context.backtrace); + dbg_context.contexts = collect_caller_bindings(th); + + TH_PUSH_TAG(th); + if ((state = EXEC_TAG()) == 0) { + result = (*func)(&dbg_context, data); + } + TH_POP_TAG(); + + /* invalidate bindings? */ + + + if (state) { + JUMP_TAG(state); + } + + return result; +} + +static VALUE +frame_get(const rb_debug_inspector_t *dc, int 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_class_get(const rb_debug_inspector_t *dc, int index) +{ + VALUE frame = frame_get(dc, index); + return rb_ary_entry(frame, 0); +} + +VALUE +rb_debug_inspector_frame_binding_get(const rb_debug_inspector_t *dc, int index) +{ + VALUE frame = frame_get(dc, index); + return rb_ary_entry(frame, 1); +} + +VALUE +rb_debug_inspector_frame_iseq_get(const rb_debug_inspector_t *dc, int index) +{ + VALUE frame = frame_get(dc, index); + return rb_ary_entry(frame, 2); +} + +VALUE +rb_debug_inspector_backtrace_locations(const rb_debug_inspector_t *dc) +{ + return dc->backtrace; +} + |