* vm_trace.c: separate trace_func related functions from

thread.c.
* thread.c: ditto.
* common.mk: add vm_trace.o.
* inits.c: call Init_vm_trace().



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36703 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2012-08-15 04:39:10 +00:00
Родитель d2e9b54564
Коммит 8eb93103e4
5 изменённых файлов: 612 добавлений и 555 удалений

Просмотреть файл

@ -1,3 +1,14 @@
Wed Aug 15 11:39:53 2012 Koichi Sasada <ko1@atdot.net>
* vm_trace.c: separate trace_func related functions from
thread.c.
* thread.c: ditto.
* common.mk: add vm_trace.o.
* inits.c: call Init_vm_trace().
Tue Aug 14 16:25:46 2012 Shugo Maeda <shugo@ruby-lang.org> Tue Aug 14 16:25:46 2012 Shugo Maeda <shugo@ruby-lang.org>
* test/erb/test_erb.rb (test_html_escape): add assertions for the * test/erb/test_erb.rb (test_html_escape): add assertions for the

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@ -92,6 +92,7 @@ COMMONOBJS = array.$(OBJEXT) \
vm.$(OBJEXT) \ vm.$(OBJEXT) \
vm_dump.$(OBJEXT) \ vm_dump.$(OBJEXT) \
vm_backtrace.$(OBJEXT) \ vm_backtrace.$(OBJEXT) \
vm_trace.$(OBJEXT) \
thread.$(OBJEXT) \ thread.$(OBJEXT) \
cont.$(OBJEXT) \ cont.$(OBJEXT) \
$(BUILTIN_ENCOBJS) \ $(BUILTIN_ENCOBJS) \
@ -781,6 +782,9 @@ id.$(OBJEXT): {$(VPATH)}id.c $(RUBY_H_INCLUDES) $(ID_H_INCLUDES)
vm_backtrace.$(OBJEXT): {$(VPATH)}vm_backtrace.c \ vm_backtrace.$(OBJEXT): {$(VPATH)}vm_backtrace.c \
$(VM_CORE_H_INCLUDES) $(RUBY_H_INCLUDES) \ $(VM_CORE_H_INCLUDES) $(RUBY_H_INCLUDES) \
{$(VPATH)}internal.h {$(VPATH)}iseq.h {$(VPATH)}internal.h {$(VPATH)}iseq.h
vm_trace.$(OBJEXT): {$(VPATH)}vm_trace.c \
$(VM_CORE_H_INCLUDES) $(RUBY_H_INCLUDES) \
{$(VPATH)}internal.h
miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c $(RUBY_H_INCLUDES) \ miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c $(RUBY_H_INCLUDES) \
$(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h {$(VPATH)}internal.h $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h {$(VPATH)}internal.h
prelude.$(OBJEXT): {$(VPATH)}prelude.c $(RUBY_H_INCLUDES) \ prelude.$(OBJEXT): {$(VPATH)}prelude.c $(RUBY_H_INCLUDES) \

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@ -60,5 +60,6 @@ rb_call_inits(void)
CALL(Rational); CALL(Rational);
CALL(Complex); CALL(Complex);
CALL(version); CALL(version);
CALL(vm_trace);
} }
#undef CALL #undef CALL

555
thread.c
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@ -4442,556 +4442,6 @@ rb_exec_recursive_outer(VALUE (*func) (VALUE, VALUE, int), VALUE obj, VALUE arg)
return exec_recursive(func, obj, 0, arg, 1); return exec_recursive(func, obj, 0, arg, 1);
} }
/* tracer */
#define RUBY_EVENT_REMOVED 0x1000000
enum {
EVENT_RUNNING_NOTHING,
EVENT_RUNNING_TRACE = 1,
EVENT_RUNNING_THREAD = 2,
EVENT_RUNNING_VM = 4,
EVENT_RUNNING_EVENT_MASK = EVENT_RUNNING_VM|EVENT_RUNNING_THREAD
};
static VALUE thread_suppress_tracing(rb_thread_t *th, int ev, VALUE (*func)(VALUE, int), VALUE arg, int always);
struct event_call_args {
rb_thread_t *th;
VALUE klass;
VALUE self;
VALUE proc;
ID id;
rb_event_flag_t event;
};
static rb_event_hook_t *
alloc_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_event_hook_t *hook = ALLOC(rb_event_hook_t);
hook->func = func;
hook->flag = events;
hook->data = data;
return hook;
}
static void
thread_reset_event_flags(rb_thread_t *th)
{
rb_event_hook_t *hook = th->event_hooks;
rb_event_flag_t flag = th->event_flags & RUBY_EVENT_VM;
while (hook) {
if (!(flag & RUBY_EVENT_REMOVED))
flag |= hook->flag;
hook = hook->next;
}
th->event_flags = flag;
}
static void
rb_threadptr_add_event_hook(rb_thread_t *th,
rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_event_hook_t *hook = alloc_event_hook(func, events, data);
hook->next = th->event_hooks;
th->event_hooks = hook;
thread_reset_event_flags(th);
}
static rb_thread_t *
thval2thread_t(VALUE thval)
{
rb_thread_t *th;
GetThreadPtr(thval, th);
return th;
}
void
rb_thread_add_event_hook(VALUE thval,
rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_threadptr_add_event_hook(thval2thread_t(thval), func, events, data);
}
static int
set_threads_event_flags_i(st_data_t key, st_data_t val, st_data_t flag)
{
VALUE thval = key;
rb_thread_t *th;
GetThreadPtr(thval, th);
if (flag) {
th->event_flags |= RUBY_EVENT_VM;
}
else {
th->event_flags &= (~RUBY_EVENT_VM);
}
return ST_CONTINUE;
}
static void
set_threads_event_flags(int flag)
{
st_foreach(GET_VM()->living_threads, set_threads_event_flags_i, (st_data_t) flag);
}
static inline int
exec_event_hooks(const rb_event_hook_t *hook, rb_event_flag_t flag, VALUE self, ID id, VALUE klass)
{
int removed = 0;
for (; hook; hook = hook->next) {
if (hook->flag & RUBY_EVENT_REMOVED) {
removed++;
continue;
}
if (flag & hook->flag) {
(*hook->func)(flag, hook->data, self, id, klass);
}
}
return removed;
}
static int remove_defered_event_hook(rb_event_hook_t **root);
static VALUE
thread_exec_event_hooks(VALUE args, int running)
{
struct event_call_args *argp = (struct event_call_args *)args;
rb_thread_t *th = argp->th;
rb_event_flag_t flag = argp->event;
VALUE self = argp->self;
ID id = argp->id;
VALUE klass = argp->klass;
const rb_event_flag_t wait_event = th->event_flags;
int removed;
if (self == rb_mRubyVMFrozenCore) return 0;
if ((wait_event & flag) && !(running & EVENT_RUNNING_THREAD)) {
th->tracing |= EVENT_RUNNING_THREAD;
removed = exec_event_hooks(th->event_hooks, flag, self, id, klass);
th->tracing &= ~EVENT_RUNNING_THREAD;
if (removed) {
remove_defered_event_hook(&th->event_hooks);
}
}
if (wait_event & RUBY_EVENT_VM) {
if (th->vm->event_hooks == NULL) {
th->event_flags &= (~RUBY_EVENT_VM);
}
else if (!(running & EVENT_RUNNING_VM)) {
th->tracing |= EVENT_RUNNING_VM;
removed = exec_event_hooks(th->vm->event_hooks, flag, self, id, klass);
th->tracing &= ~EVENT_RUNNING_VM;
if (removed) {
remove_defered_event_hook(&th->vm->event_hooks);
}
}
}
return 0;
}
void
rb_threadptr_exec_event_hooks(rb_thread_t *th, rb_event_flag_t flag, VALUE self, ID id, VALUE klass)
{
const VALUE errinfo = th->errinfo;
struct event_call_args args;
args.th = th;
args.event = flag;
args.self = self;
args.id = id;
args.klass = klass;
args.proc = 0;
thread_suppress_tracing(th, EVENT_RUNNING_EVENT_MASK, thread_exec_event_hooks, (VALUE)&args, FALSE);
th->errinfo = errinfo;
}
void
rb_add_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_event_hook_t *hook = alloc_event_hook(func, events, data);
rb_vm_t *vm = GET_VM();
hook->next = vm->event_hooks;
vm->event_hooks = hook;
set_threads_event_flags(1);
}
static int
defer_remove_event_hook(rb_event_hook_t *hook, rb_event_hook_func_t func)
{
while (hook) {
if (func == 0 || hook->func == func) {
hook->flag |= RUBY_EVENT_REMOVED;
}
hook = hook->next;
}
return -1;
}
static int
remove_event_hook(rb_event_hook_t **root, rb_event_hook_func_t func)
{
rb_event_hook_t *hook = *root, *next;
while (hook) {
next = hook->next;
if (func == 0 || hook->func == func || (hook->flag & RUBY_EVENT_REMOVED)) {
*root = next;
xfree(hook);
}
else {
root = &hook->next;
}
hook = next;
}
return -1;
}
static int
remove_defered_event_hook(rb_event_hook_t **root)
{
rb_event_hook_t *hook = *root, *next;
while (hook) {
next = hook->next;
if (hook->flag & RUBY_EVENT_REMOVED) {
*root = next;
xfree(hook);
}
else {
root = &hook->next;
}
hook = next;
}
return -1;
}
static int
rb_threadptr_remove_event_hook(rb_thread_t *th, rb_event_hook_func_t func)
{
int ret;
if (th->tracing & EVENT_RUNNING_THREAD) {
ret = defer_remove_event_hook(th->event_hooks, func);
}
else {
ret = remove_event_hook(&th->event_hooks, func);
}
thread_reset_event_flags(th);
return ret;
}
int
rb_thread_remove_event_hook(VALUE thval, rb_event_hook_func_t func)
{
return rb_threadptr_remove_event_hook(thval2thread_t(thval), func);
}
static rb_event_hook_t *
search_live_hook(rb_event_hook_t *hook)
{
while (hook) {
if (!(hook->flag & RUBY_EVENT_REMOVED))
return hook;
hook = hook->next;
}
return NULL;
}
static int
running_vm_event_hooks(st_data_t key, st_data_t val, st_data_t data)
{
rb_thread_t *th = thval2thread_t((VALUE)key);
if (!(th->tracing & EVENT_RUNNING_VM)) return ST_CONTINUE;
*(rb_thread_t **)data = th;
return ST_STOP;
}
static rb_thread_t *
vm_event_hooks_running_thread(rb_vm_t *vm)
{
rb_thread_t *found = NULL;
st_foreach(vm->living_threads, running_vm_event_hooks, (st_data_t)&found);
return found;
}
int
rb_remove_event_hook(rb_event_hook_func_t func)
{
rb_vm_t *vm = GET_VM();
rb_event_hook_t *hook = search_live_hook(vm->event_hooks);
int ret;
if (vm_event_hooks_running_thread(vm)) {
ret = defer_remove_event_hook(vm->event_hooks, func);
}
else {
ret = remove_event_hook(&vm->event_hooks, func);
}
if (hook && !search_live_hook(vm->event_hooks)) {
set_threads_event_flags(0);
}
return ret;
}
static int
clear_trace_func_i(st_data_t key, st_data_t val, st_data_t flag)
{
rb_thread_t *th;
GetThreadPtr((VALUE)key, th);
rb_threadptr_remove_event_hook(th, 0);
return ST_CONTINUE;
}
void
rb_clear_trace_func(void)
{
st_foreach(GET_VM()->living_threads, clear_trace_func_i, (st_data_t) 0);
rb_remove_event_hook(0);
}
static void call_trace_func(rb_event_flag_t, VALUE data, VALUE self, ID id, VALUE klass);
/*
* call-seq:
* set_trace_func(proc) -> proc
* set_trace_func(nil) -> nil
*
* Establishes _proc_ as the handler for tracing, or disables
* tracing if the parameter is +nil+. _proc_ takes up
* to six parameters: an event name, a filename, a line number, an
* object id, a binding, and the name of a class. _proc_ is
* invoked whenever an event occurs. Events are: <code>c-call</code>
* (call a C-language routine), <code>c-return</code> (return from a
* C-language routine), <code>call</code> (call a Ruby method),
* <code>class</code> (start a class or module definition),
* <code>end</code> (finish a class or module definition),
* <code>line</code> (execute code on a new line), <code>raise</code>
* (raise an exception), and <code>return</code> (return from a Ruby
* method). Tracing is disabled within the context of _proc_.
*
* class Test
* def test
* a = 1
* b = 2
* end
* end
*
* set_trace_func proc { |event, file, line, id, binding, classname|
* printf "%8s %s:%-2d %10s %8s\n", event, file, line, id, classname
* }
* t = Test.new
* t.test
*
* line prog.rb:11 false
* c-call prog.rb:11 new Class
* c-call prog.rb:11 initialize Object
* c-return prog.rb:11 initialize Object
* c-return prog.rb:11 new Class
* line prog.rb:12 false
* call prog.rb:2 test Test
* line prog.rb:3 test Test
* line prog.rb:4 test Test
* return prog.rb:4 test Test
*/
static VALUE
set_trace_func(VALUE obj, VALUE trace)
{
rb_remove_event_hook(call_trace_func);
if (NIL_P(trace)) {
GET_THREAD()->tracing = EVENT_RUNNING_NOTHING;
return Qnil;
}
if (!rb_obj_is_proc(trace)) {
rb_raise(rb_eTypeError, "trace_func needs to be Proc");
}
rb_add_event_hook(call_trace_func, RUBY_EVENT_ALL, trace);
return trace;
}
static void
thread_add_trace_func(rb_thread_t *th, VALUE trace)
{
if (!rb_obj_is_proc(trace)) {
rb_raise(rb_eTypeError, "trace_func needs to be Proc");
}
rb_threadptr_add_event_hook(th, call_trace_func, RUBY_EVENT_ALL, trace);
}
/*
* call-seq:
* thr.add_trace_func(proc) -> proc
*
* Adds _proc_ as a handler for tracing.
* See <code>Thread#set_trace_func</code> and +set_trace_func+.
*/
static VALUE
thread_add_trace_func_m(VALUE obj, VALUE trace)
{
rb_thread_t *th;
GetThreadPtr(obj, th);
thread_add_trace_func(th, trace);
return trace;
}
/*
* call-seq:
* thr.set_trace_func(proc) -> proc
* thr.set_trace_func(nil) -> nil
*
* Establishes _proc_ on _thr_ as the handler for tracing, or
* disables tracing if the parameter is +nil+.
* See +set_trace_func+.
*/
static VALUE
thread_set_trace_func_m(VALUE obj, VALUE trace)
{
rb_thread_t *th;
GetThreadPtr(obj, th);
rb_threadptr_remove_event_hook(th, call_trace_func);
if (NIL_P(trace)) {
th->tracing = EVENT_RUNNING_NOTHING;
return Qnil;
}
thread_add_trace_func(th, trace);
return trace;
}
static const char *
get_event_name(rb_event_flag_t event)
{
switch (event) {
case RUBY_EVENT_LINE:
return "line";
case RUBY_EVENT_CLASS:
return "class";
case RUBY_EVENT_END:
return "end";
case RUBY_EVENT_CALL:
return "call";
case RUBY_EVENT_RETURN:
return "return";
case RUBY_EVENT_C_CALL:
return "c-call";
case RUBY_EVENT_C_RETURN:
return "c-return";
case RUBY_EVENT_RAISE:
return "raise";
default:
return "unknown";
}
}
static VALUE
call_trace_proc(VALUE args, int tracing)
{
struct event_call_args *p = (struct event_call_args *)args;
const char *srcfile = rb_sourcefile();
VALUE eventname = rb_str_new2(get_event_name(p->event));
VALUE filename = srcfile ? rb_str_new2(srcfile) : Qnil;
VALUE argv[6];
int line = rb_sourceline();
ID id = 0;
VALUE klass = 0;
if (p->klass != 0) {
id = p->id;
klass = p->klass;
}
else {
rb_thread_method_id_and_class(p->th, &id, &klass);
}
if (id == ID_ALLOCATOR)
return Qnil;
if (klass) {
if (RB_TYPE_P(klass, T_ICLASS)) {
klass = RBASIC(klass)->klass;
}
else if (FL_TEST(klass, FL_SINGLETON)) {
klass = rb_iv_get(klass, "__attached__");
}
}
argv[0] = eventname;
argv[1] = filename;
argv[2] = INT2FIX(line);
argv[3] = id ? ID2SYM(id) : Qnil;
argv[4] = (p->self && srcfile) ? rb_binding_new() : Qnil;
argv[5] = klass ? klass : Qnil;
return rb_proc_call_with_block(p->proc, 6, argv, Qnil);
}
static void
call_trace_func(rb_event_flag_t event, VALUE proc, VALUE self, ID id, VALUE klass)
{
struct event_call_args args;
args.th = GET_THREAD();
args.event = event;
args.proc = proc;
args.self = self;
args.id = id;
args.klass = klass;
ruby_suppress_tracing(call_trace_proc, (VALUE)&args, FALSE);
}
VALUE
ruby_suppress_tracing(VALUE (*func)(VALUE, int), VALUE arg, int always)
{
rb_thread_t *th = GET_THREAD();
return thread_suppress_tracing(th, EVENT_RUNNING_TRACE, func, arg, always);
}
static VALUE
thread_suppress_tracing(rb_thread_t *th, int ev, VALUE (*func)(VALUE, int), VALUE arg, int always)
{
int state, tracing = th->tracing, running = tracing & ev;
volatile int raised;
volatile int outer_state;
VALUE result = Qnil;
if (running == ev && !always) {
return Qnil;
}
else {
th->tracing |= ev;
}
raised = rb_threadptr_reset_raised(th);
outer_state = th->state;
th->state = 0;
PUSH_TAG();
if ((state = EXEC_TAG()) == 0) {
result = (*func)(arg, running);
}
if (raised) {
rb_threadptr_set_raised(th);
}
POP_TAG();
th->tracing = tracing;
if (state) {
JUMP_TAG(state);
}
th->state = outer_state;
return result;
}
/* /*
* call-seq: * call-seq:
* thr.backtrace -> array * thr.backtrace -> array
@ -5110,11 +4560,6 @@ Init_Thread(void)
recursive_key = rb_intern("__recursive_key__"); recursive_key = rb_intern("__recursive_key__");
rb_eThreadError = rb_define_class("ThreadError", rb_eStandardError); rb_eThreadError = rb_define_class("ThreadError", rb_eStandardError);
/* trace */
rb_define_global_function("set_trace_func", set_trace_func, 1);
rb_define_method(rb_cThread, "set_trace_func", thread_set_trace_func_m, 1);
rb_define_method(rb_cThread, "add_trace_func", thread_add_trace_func_m, 1);
/* init thread core */ /* init thread core */
{ {
/* main thread setting */ /* main thread setting */

596
vm_trace.c Normal file
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@ -0,0 +1,596 @@
/**********************************************************************
vm_trace.c -
$Author: ko1 $
created at: Tue Aug 14 19:37:09 2012
Copyright (C) 1993-2012 Yukihiro Matsumoto
**********************************************************************/
/*
* This file incldue two parts:
*
* (1) set_trace_func internal mechanisms
* and C level API
*
* (2) Ruby level API
* (2-1) set_trace_func API
* (2-2) TracePoint API (not yet)
*
*/
#include "ruby/ruby.h"
#include "ruby/encoding.h"
#include "internal.h"
#include "vm_core.h"
#include "eval_intern.h"
/* (1) trace mechanisms */
#define RUBY_EVENT_REMOVED 0x1000000
enum {
EVENT_RUNNING_NOTHING,
EVENT_RUNNING_TRACE = 1,
EVENT_RUNNING_THREAD = 2,
EVENT_RUNNING_VM = 4,
EVENT_RUNNING_EVENT_MASK = EVENT_RUNNING_VM|EVENT_RUNNING_THREAD
};
static VALUE thread_suppress_tracing(rb_thread_t *th, int ev, VALUE (*func)(VALUE, int), VALUE arg, int always);
struct event_call_args {
rb_thread_t *th;
VALUE klass;
VALUE self;
VALUE proc;
ID id;
rb_event_flag_t event;
};
static rb_event_hook_t *
alloc_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_event_hook_t *hook = ALLOC(rb_event_hook_t);
hook->func = func;
hook->flag = events;
hook->data = data;
return hook;
}
static void
thread_reset_event_flags(rb_thread_t *th)
{
rb_event_hook_t *hook = th->event_hooks;
rb_event_flag_t flag = th->event_flags & RUBY_EVENT_VM;
while (hook) {
if (!(flag & RUBY_EVENT_REMOVED))
flag |= hook->flag;
hook = hook->next;
}
th->event_flags = flag;
}
static void
rb_threadptr_add_event_hook(rb_thread_t *th,
rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_event_hook_t *hook = alloc_event_hook(func, events, data);
hook->next = th->event_hooks;
th->event_hooks = hook;
thread_reset_event_flags(th);
}
static rb_thread_t *
thval2thread_t(VALUE thval)
{
rb_thread_t *th;
GetThreadPtr(thval, th);
return th;
}
void
rb_thread_add_event_hook(VALUE thval,
rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_threadptr_add_event_hook(thval2thread_t(thval), func, events, data);
}
static int
set_threads_event_flags_i(st_data_t key, st_data_t val, st_data_t flag)
{
VALUE thval = key;
rb_thread_t *th;
GetThreadPtr(thval, th);
if (flag) {
th->event_flags |= RUBY_EVENT_VM;
}
else {
th->event_flags &= (~RUBY_EVENT_VM);
}
return ST_CONTINUE;
}
static void
set_threads_event_flags(int flag)
{
st_foreach(GET_VM()->living_threads, set_threads_event_flags_i, (st_data_t) flag);
}
static inline int
exec_event_hooks(const rb_event_hook_t *hook, rb_event_flag_t flag, VALUE self, ID id, VALUE klass)
{
int removed = 0;
for (; hook; hook = hook->next) {
if (hook->flag & RUBY_EVENT_REMOVED) {
removed++;
continue;
}
if (flag & hook->flag) {
(*hook->func)(flag, hook->data, self, id, klass);
}
}
return removed;
}
static int remove_defered_event_hook(rb_event_hook_t **root);
static VALUE
thread_exec_event_hooks(VALUE args, int running)
{
struct event_call_args *argp = (struct event_call_args *)args;
rb_thread_t *th = argp->th;
rb_event_flag_t flag = argp->event;
VALUE self = argp->self;
ID id = argp->id;
VALUE klass = argp->klass;
const rb_event_flag_t wait_event = th->event_flags;
int removed;
if (self == rb_mRubyVMFrozenCore) return 0;
if ((wait_event & flag) && !(running & EVENT_RUNNING_THREAD)) {
th->tracing |= EVENT_RUNNING_THREAD;
removed = exec_event_hooks(th->event_hooks, flag, self, id, klass);
th->tracing &= ~EVENT_RUNNING_THREAD;
if (removed) {
remove_defered_event_hook(&th->event_hooks);
}
}
if (wait_event & RUBY_EVENT_VM) {
if (th->vm->event_hooks == NULL) {
th->event_flags &= (~RUBY_EVENT_VM);
}
else if (!(running & EVENT_RUNNING_VM)) {
th->tracing |= EVENT_RUNNING_VM;
removed = exec_event_hooks(th->vm->event_hooks, flag, self, id, klass);
th->tracing &= ~EVENT_RUNNING_VM;
if (removed) {
remove_defered_event_hook(&th->vm->event_hooks);
}
}
}
return 0;
}
void
rb_threadptr_exec_event_hooks(rb_thread_t *th, rb_event_flag_t flag, VALUE self, ID id, VALUE klass)
{
const VALUE errinfo = th->errinfo;
struct event_call_args args;
args.th = th;
args.event = flag;
args.self = self;
args.id = id;
args.klass = klass;
args.proc = 0;
thread_suppress_tracing(th, EVENT_RUNNING_EVENT_MASK, thread_exec_event_hooks, (VALUE)&args, FALSE);
th->errinfo = errinfo;
}
void
rb_add_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
{
rb_event_hook_t *hook = alloc_event_hook(func, events, data);
rb_vm_t *vm = GET_VM();
hook->next = vm->event_hooks;
vm->event_hooks = hook;
set_threads_event_flags(1);
}
static int
defer_remove_event_hook(rb_event_hook_t *hook, rb_event_hook_func_t func)
{
while (hook) {
if (func == 0 || hook->func == func) {
hook->flag |= RUBY_EVENT_REMOVED;
}
hook = hook->next;
}
return -1;
}
static int
remove_event_hook(rb_event_hook_t **root, rb_event_hook_func_t func)
{
rb_event_hook_t *hook = *root, *next;
while (hook) {
next = hook->next;
if (func == 0 || hook->func == func || (hook->flag & RUBY_EVENT_REMOVED)) {
*root = next;
xfree(hook);
}
else {
root = &hook->next;
}
hook = next;
}
return -1;
}
static int
remove_defered_event_hook(rb_event_hook_t **root)
{
rb_event_hook_t *hook = *root, *next;
while (hook) {
next = hook->next;
if (hook->flag & RUBY_EVENT_REMOVED) {
*root = next;
xfree(hook);
}
else {
root = &hook->next;
}
hook = next;
}
return -1;
}
static int
rb_threadptr_remove_event_hook(rb_thread_t *th, rb_event_hook_func_t func)
{
int ret;
if (th->tracing & EVENT_RUNNING_THREAD) {
ret = defer_remove_event_hook(th->event_hooks, func);
}
else {
ret = remove_event_hook(&th->event_hooks, func);
}
thread_reset_event_flags(th);
return ret;
}
int
rb_thread_remove_event_hook(VALUE thval, rb_event_hook_func_t func)
{
return rb_threadptr_remove_event_hook(thval2thread_t(thval), func);
}
static rb_event_hook_t *
search_live_hook(rb_event_hook_t *hook)
{
while (hook) {
if (!(hook->flag & RUBY_EVENT_REMOVED))
return hook;
hook = hook->next;
}
return NULL;
}
static int
running_vm_event_hooks(st_data_t key, st_data_t val, st_data_t data)
{
rb_thread_t *th = thval2thread_t((VALUE)key);
if (!(th->tracing & EVENT_RUNNING_VM)) return ST_CONTINUE;
*(rb_thread_t **)data = th;
return ST_STOP;
}
static rb_thread_t *
vm_event_hooks_running_thread(rb_vm_t *vm)
{
rb_thread_t *found = NULL;
st_foreach(vm->living_threads, running_vm_event_hooks, (st_data_t)&found);
return found;
}
int
rb_remove_event_hook(rb_event_hook_func_t func)
{
rb_vm_t *vm = GET_VM();
rb_event_hook_t *hook = search_live_hook(vm->event_hooks);
int ret;
if (vm_event_hooks_running_thread(vm)) {
ret = defer_remove_event_hook(vm->event_hooks, func);
}
else {
ret = remove_event_hook(&vm->event_hooks, func);
}
if (hook && !search_live_hook(vm->event_hooks)) {
set_threads_event_flags(0);
}
return ret;
}
static int
clear_trace_func_i(st_data_t key, st_data_t val, st_data_t flag)
{
rb_thread_t *th;
GetThreadPtr((VALUE)key, th);
rb_threadptr_remove_event_hook(th, 0);
return ST_CONTINUE;
}
void
rb_clear_trace_func(void)
{
st_foreach(GET_VM()->living_threads, clear_trace_func_i, (st_data_t) 0);
rb_remove_event_hook(0);
}
static void call_trace_func(rb_event_flag_t, VALUE data, VALUE self, ID id, VALUE klass);
/* (2-1) set_trace_func (old API) */
/*
* call-seq:
* set_trace_func(proc) -> proc
* set_trace_func(nil) -> nil
*
* Establishes _proc_ as the handler for tracing, or disables
* tracing if the parameter is +nil+. _proc_ takes up
* to six parameters: an event name, a filename, a line number, an
* object id, a binding, and the name of a class. _proc_ is
* invoked whenever an event occurs. Events are: <code>c-call</code>
* (call a C-language routine), <code>c-return</code> (return from a
* C-language routine), <code>call</code> (call a Ruby method),
* <code>class</code> (start a class or module definition),
* <code>end</code> (finish a class or module definition),
* <code>line</code> (execute code on a new line), <code>raise</code>
* (raise an exception), and <code>return</code> (return from a Ruby
* method). Tracing is disabled within the context of _proc_.
*
* class Test
* def test
* a = 1
* b = 2
* end
* end
*
* set_trace_func proc { |event, file, line, id, binding, classname|
* printf "%8s %s:%-2d %10s %8s\n", event, file, line, id, classname
* }
* t = Test.new
* t.test
*
* line prog.rb:11 false
* c-call prog.rb:11 new Class
* c-call prog.rb:11 initialize Object
* c-return prog.rb:11 initialize Object
* c-return prog.rb:11 new Class
* line prog.rb:12 false
* call prog.rb:2 test Test
* line prog.rb:3 test Test
* line prog.rb:4 test Test
* return prog.rb:4 test Test
*/
static VALUE
set_trace_func(VALUE obj, VALUE trace)
{
rb_remove_event_hook(call_trace_func);
if (NIL_P(trace)) {
GET_THREAD()->tracing = EVENT_RUNNING_NOTHING;
return Qnil;
}
if (!rb_obj_is_proc(trace)) {
rb_raise(rb_eTypeError, "trace_func needs to be Proc");
}
rb_add_event_hook(call_trace_func, RUBY_EVENT_ALL, trace);
return trace;
}
static void
thread_add_trace_func(rb_thread_t *th, VALUE trace)
{
if (!rb_obj_is_proc(trace)) {
rb_raise(rb_eTypeError, "trace_func needs to be Proc");
}
rb_threadptr_add_event_hook(th, call_trace_func, RUBY_EVENT_ALL, trace);
}
/*
* call-seq:
* thr.add_trace_func(proc) -> proc
*
* Adds _proc_ as a handler for tracing.
* See <code>Thread#set_trace_func</code> and +set_trace_func+.
*/
static VALUE
thread_add_trace_func_m(VALUE obj, VALUE trace)
{
rb_thread_t *th;
GetThreadPtr(obj, th);
thread_add_trace_func(th, trace);
return trace;
}
/*
* call-seq:
* thr.set_trace_func(proc) -> proc
* thr.set_trace_func(nil) -> nil
*
* Establishes _proc_ on _thr_ as the handler for tracing, or
* disables tracing if the parameter is +nil+.
* See +set_trace_func+.
*/
static VALUE
thread_set_trace_func_m(VALUE obj, VALUE trace)
{
rb_thread_t *th;
GetThreadPtr(obj, th);
rb_threadptr_remove_event_hook(th, call_trace_func);
if (NIL_P(trace)) {
th->tracing = EVENT_RUNNING_NOTHING;
return Qnil;
}
thread_add_trace_func(th, trace);
return trace;
}
static const char *
get_event_name(rb_event_flag_t event)
{
switch (event) {
case RUBY_EVENT_LINE:
return "line";
case RUBY_EVENT_CLASS:
return "class";
case RUBY_EVENT_END:
return "end";
case RUBY_EVENT_CALL:
return "call";
case RUBY_EVENT_RETURN:
return "return";
case RUBY_EVENT_C_CALL:
return "c-call";
case RUBY_EVENT_C_RETURN:
return "c-return";
case RUBY_EVENT_RAISE:
return "raise";
default:
return "unknown";
}
}
static VALUE
call_trace_proc(VALUE args, int tracing)
{
struct event_call_args *p = (struct event_call_args *)args;
const char *srcfile = rb_sourcefile();
VALUE eventname = rb_str_new2(get_event_name(p->event));
VALUE filename = srcfile ? rb_str_new2(srcfile) : Qnil;
VALUE argv[6];
int line = rb_sourceline();
ID id = 0;
VALUE klass = 0;
if (p->klass != 0) {
id = p->id;
klass = p->klass;
}
else {
rb_thread_method_id_and_class(p->th, &id, &klass);
}
if (id == ID_ALLOCATOR)
return Qnil;
if (klass) {
if (RB_TYPE_P(klass, T_ICLASS)) {
klass = RBASIC(klass)->klass;
}
else if (FL_TEST(klass, FL_SINGLETON)) {
klass = rb_iv_get(klass, "__attached__");
}
}
argv[0] = eventname;
argv[1] = filename;
argv[2] = INT2FIX(line);
argv[3] = id ? ID2SYM(id) : Qnil;
argv[4] = (p->self && srcfile) ? rb_binding_new() : Qnil;
argv[5] = klass ? klass : Qnil;
return rb_proc_call_with_block(p->proc, 6, argv, Qnil);
}
static void
call_trace_func(rb_event_flag_t event, VALUE proc, VALUE self, ID id, VALUE klass)
{
struct event_call_args args;
args.th = GET_THREAD();
args.event = event;
args.proc = proc;
args.self = self;
args.id = id;
args.klass = klass;
ruby_suppress_tracing(call_trace_proc, (VALUE)&args, FALSE);
}
VALUE
ruby_suppress_tracing(VALUE (*func)(VALUE, int), VALUE arg, int always)
{
rb_thread_t *th = GET_THREAD();
return thread_suppress_tracing(th, EVENT_RUNNING_TRACE, func, arg, always);
}
static VALUE
thread_suppress_tracing(rb_thread_t *th, int ev, VALUE (*func)(VALUE, int), VALUE arg, int always)
{
int state, tracing = th->tracing, running = tracing & ev;
volatile int raised;
volatile int outer_state;
VALUE result = Qnil;
if (running == ev && !always) {
return Qnil;
}
else {
th->tracing |= ev;
}
raised = rb_threadptr_reset_raised(th);
outer_state = th->state;
th->state = 0;
PUSH_TAG();
if ((state = EXEC_TAG()) == 0) {
result = (*func)(arg, running);
}
if (raised) {
rb_threadptr_set_raised(th);
}
POP_TAG();
th->tracing = tracing;
if (state) {
JUMP_TAG(state);
}
th->state = outer_state;
return result;
}
/* (2-2) TracePoint API (not yet) */
/* This function is called from inits.c */
void
Init_vm_trace(void)
{
/* trace */
rb_define_global_function("set_trace_func", set_trace_func, 1);
rb_define_method(rb_cThread, "set_trace_func", thread_set_trace_func_m, 1);
rb_define_method(rb_cThread, "add_trace_func", thread_add_trace_func_m, 1);
}