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* thread.c (thread_reset_event_flags, exec_event_hooks): ignore

Browse source 
hooks marked as removed.

* thread.c (thread_exec_event_hooks): remove hooks to be removed.

* thread.c (rb_threadptr_remove_event_hook, rb_remove_event_hook):
  defer removing hooks if running the hooks.  [ruby-dev:42350]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29429 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2010-10-09 02:00:21 +00:00
parent c3032fa749
commit 549b0c53a8
3 changed files with 124 additions and 17 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
Sat Oct 9 11:00:06 2010 Nobuyoshi Nakada <nobu@ruby-lang.org>
* thread.c (thread_reset_event_flags, exec_event_hooks): ignore
hooks marked as removed.
* thread.c (thread_exec_event_hooks): remove hooks to be removed.
* thread.c (rb_threadptr_remove_event_hook, rb_remove_event_hook):
defer removing hooks if running the hooks. [ruby-dev:42350]
Sat Oct 9 10:51:00 2010 Nobuyoshi Nakada <nobu@ruby-lang.org>
* thread.c (rb_threadptr_exec_event_hooks): suppress each event

12
test/ruby/test_settracefunc.rb
View file

@ -354,4 +354,16 @@ class TestSetTraceFunc < Test::Unit::TestCase
assert_equal([], events[:set])
assert_equal([], events[:add])
end
def test_remove_in_trace
bug3921 = '[ruby-dev:42350]'
ok = false
func = lambda{|e, f, l, i, b, k|
set_trace_func(nil)
ok = eval("self", b)
}
set_trace_func(func)
assert_equal(self, ok, bug3921)
end
end

119
thread.c
View file

@ -3708,6 +3708,8 @@ rb_exec_recursive_outer(VALUE (*func) (VALUE, VALUE, int), VALUE obj, VALUE arg)
}
/* tracer */
#define RUBY_EVENT_REMOVED 0x1000000
enum {
EVENT_RUNNING_NOTHING,
EVENT_RUNNING_TRACE = 1,
@ -3745,7 +3747,8 @@ thread_reset_event_flags(rb_thread_t *th)
rb_event_flag_t flag = th->event_flags & RUBY_EVENT_VM;
while (hook) {
flag |= hook->flag;
if (!(flag & RUBY_EVENT_REMOVED))
flag |= hook->flag;
hook = hook->next;
}
th->event_flags = flag;
@ -3798,16 +3801,24 @@ set_threads_event_flags(int flag)
st_foreach(GET_VM()->living_threads, set_threads_event_flags_i, (st_data_t) flag);
}
static inline void
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)
{
@ -3818,13 +3829,17 @@ thread_exec_event_hooks(VALUE args, int running)
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;
exec_event_hooks(th->event_hooks, flag, self, id, klass);
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) {
@ -3832,8 +3847,11 @@ thread_exec_event_hooks(VALUE args, int running)
}
else if (!(running & EVENT_RUNNING_VM)) {
th->tracing |= EVENT_RUNNING_VM;
exec_event_hooks(th->vm->event_hooks, flag, self, id, klass);
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;
@ -3866,24 +3884,50 @@ rb_add_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
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 *prev = NULL, *hook = *root, *next;
rb_event_hook_t *hook = *root, *next;
while (hook) {
next = hook->next;
if (func == 0 || hook->func == func) {
if (prev) {
prev->next = hook->next;
}
else {
*root = hook->next;
}
if (func == 0 || hook->func == func || (hook->flag & RUBY_EVENT_REMOVED)) {
*root = next;
xfree(hook);
}
else {
prev = hook;
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;
}
@ -3893,7 +3937,13 @@ remove_event_hook(rb_event_hook_t **root, rb_event_hook_func_t func)
static int
rb_threadptr_remove_event_hook(rb_thread_t *th, rb_event_hook_func_t func)
{
int ret = remove_event_hook(&th->event_hooks, 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;
}
@ -3904,14 +3954,49 @@ 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 = vm->event_hooks;
int ret = remove_event_hook(&vm->event_hooks, func);
rb_event_hook_t *hook = search_live_hook(vm->event_hooks);
int ret;
if (hook != NULL && vm->event_hooks == NULL) {
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);
}