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py: Integrate sys.settrace feature into the VM and runtime.

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This commit adds support for sys.settrace, allowing to install Python
handlers to trace execution of Python code.  The interface follows CPython
as closely as possible.  The feature is disabled by default and can be
enabled via MICROPY_PY_SYS_SETTRACE.
This commit is contained in:
Milan Rossa
2019-08-14 16:09:36 +02:00
committed by Damien George
parent c96aedad46
commit 310b3d1b81
15 changed files with 201 additions and 1 deletions
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15
py/emitglue.c
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@@ -34,6 +34,7 @@
#include "py/emitglue.h"
#include "py/runtime0.h"
#include "py/bc.h"
#include "py/profile.h"
#if MICROPY_DEBUG_VERBOSE // print debugging info
#define DEBUG_PRINT (1)
@@ -52,6 +53,9 @@ mp_uint_t mp_verbose_flag = 0;
mp_raw_code_t *mp_emit_glue_new_raw_code(void) {
mp_raw_code_t *rc = m_new0(mp_raw_code_t, 1);
rc->kind = MP_CODE_RESERVED;
#if MICROPY_PY_SYS_SETTRACE
rc->line_of_definition = 0;
#endif
return rc;
}
@@ -75,6 +79,11 @@ void mp_emit_glue_assign_bytecode(mp_raw_code_t *rc, const byte *code,
rc->n_raw_code = n_raw_code;
#endif
#if MICROPY_PY_SYS_SETTRACE
mp_bytecode_prelude_t *prelude = &rc->prelude;
mp_prof_extract_prelude(code, prelude);
#endif
#ifdef DEBUG_PRINT
#if !MICROPY_DEBUG_PRINTERS
const size_t len = 0;
@@ -172,6 +181,12 @@ mp_obj_t mp_make_function_from_raw_code(const mp_raw_code_t *rc, mp_obj_t def_ar
if ((rc->scope_flags & MP_SCOPE_FLAG_GENERATOR) != 0) {
((mp_obj_base_t*)MP_OBJ_TO_PTR(fun))->type = &mp_type_gen_wrap;
}
#if MICROPY_PY_SYS_SETTRACE
mp_obj_fun_bc_t *self_fun = (mp_obj_fun_bc_t *)MP_OBJ_TO_PTR(fun);
self_fun->rc = rc;
#endif
break;
}