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* thread.c (rb_thread_blocking_region): reverted r25566, and added

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description that no exception is allowed inside `func', instead.
  see [ruby-dev:39582]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25570 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2009-10-30 04:36:40 +00:00
parent b16e6a93ca
commit 6116f52f61
2 changed files with 11 additions and 34 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Fri Oct 30 13:36:39 2009 Nobuyoshi Nakada <nobu@ruby-lang.org>
* thread.c (rb_thread_blocking_region): reverted r25566, and added
description that no exception is allowed inside `func', instead.
see [ruby-dev:39582]
Fri Oct 30 13:13:16 2009 NAKAMURA Usaku <usa@ruby-lang.org>
* win32.c (recvmsg, sendmsg, link): shouldn't raise ruby's exceptions

39
thread.c
View file

@ -1028,23 +1028,6 @@ rb_thread_blocking_region_end(struct rb_blocking_region_buffer *region)
RUBY_VM_CHECK_INTS();
}
#ifndef PROHIBIT_FUNCTION_CAST
#define PROHIBIT_FUNCTION_CAST 0
#endif
#if PROHIBIT_FUNCTION_CAST
struct blocking_function_args {
rb_blocking_function_t *func;
void *data;
};
static VALUE
call_blocking_function(VALUE arg)
{
struct blocking_function_args *blocking = (void *)arg;
return (blocking->func)(blocking->data);
}
#endif
/*
* rb_thread_blocking_region - permit concurrent/parallel execution.
*
@ -1066,9 +1049,10 @@ call_blocking_function(VALUE arg)
* * RUBY_UBF_IO: ubf for IO operation
* * RUBY_UBF_PROCESS: ubf for process operation
*
* NOTE: You can not execute most of Ruby C API and touch Ruby objects
* in `func()' and `ubf()' because current thread doesn't acquire
* GVL (cause synchronization problem). If you need to do it,
* NOTE: You can not execute most of Ruby C API and touch Ruby
* objects in `func()' and `ubf()', including raising an
* exception, because current thread doesn't acquire GVL
* (cause synchronization problem). If you need to do it,
* read source code of C APIs and confirm by yourself.
*
* NOTE: In short, this API is difficult to use safely. I recommend you
@ -1087,28 +1071,15 @@ rb_thread_blocking_region(
{
VALUE val;
rb_thread_t *th = GET_THREAD();
int status;
#if PROHIBIT_FUNCTION_CAST
struct blocking_function_args args;
#endif
if (ubf == RUBY_UBF_IO || ubf == RUBY_UBF_PROCESS) {
ubf = ubf_select;
data2 = th;
}
#if PROHIBIT_FUNCTION_CAST
BLOCKING_REGION({
args.func = func;
args.data = data1;
val = rb_protect(call_blocking_function, (VALUE)&args, &status);
val = func(data1);
}, ubf, data2);
#else
BLOCKING_REGION({
val = rb_protect((VALUE (*)(VALUE))func, (VALUE)data1, &status);
}, ubf, data2);
#endif
if (status) rb_jump_tag(status);
return val;
}