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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPCXX_IMPL_THD_NO_CXX11_H
#define GRPCXX_IMPL_THD_NO_CXX11_H
#include <grpc/support/thd.h>
namespace grpc {
class thread {
public:
template <class T>
thread(void (T::*fptr)(), T *obj) {
func_ = new thread_function<T>(fptr, obj);
joined_ = false;
start();
}
template <class T, class U>
thread(void (T::*fptr)(U arg), T *obj, U arg) {
func_ = new thread_function_arg<T, U>(fptr, obj, arg);
joined_ = false;
start();
}
~thread() {
if (!joined_) std::terminate();
delete func_;
}
thread(thread &&other)
: func_(other.func_), thd_(other.thd_), joined_(other.joined_) {
other.joined_ = true;
other.func_ = NULL;
}
void join() {
gpr_thd_join(thd_);
joined_ = true;
}
private:
void start() {
gpr_thd_options options = gpr_thd_options_default();
gpr_thd_options_set_joinable(&options);
gpr_thd_new(&thd_, thread_func, (void *)func_, &options);
}
static void thread_func(void *arg) {
thread_function_base *func = (thread_function_base *)arg;
func->call();
}
class thread_function_base {
public:
virtual ~thread_function_base() {}
virtual void call() = 0;
};
template <class T>
class thread_function : public thread_function_base {
public:
thread_function(void (T::*fptr)(), T *obj) : fptr_(fptr), obj_(obj) {}
virtual void call() { (obj_->*fptr_)(); }
private:
void (T::*fptr_)();
T *obj_;
};
template <class T, class U>
class thread_function_arg : public thread_function_base {
public:
thread_function_arg(void (T::*fptr)(U arg), T *obj, U arg)
: fptr_(fptr), obj_(obj), arg_(arg) {}
virtual void call() { (obj_->*fptr_)(arg_); }
private:
void (T::*fptr_)(U arg);
T *obj_;
U arg_;
};
thread_function_base *func_;
gpr_thd_id thd_;
bool joined_;
// Disallow copy and assign.
thread(const thread &);
void operator=(const thread &);
};
} // namespace grpc
#endif // GRPCXX_IMPL_THD_NO_CXX11_H
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