| 1 | |
|---|---|
| 2 | // Copyright Oliver Kowalke 2013. |
| 3 | // Distributed under the Boost Software License, Version 1.0. |
| 4 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 5 | // http://www.boost.org/LICENSE_1_0.txt) |
| 6 | |
| 7 | #include "boost/fiber/fiber.hpp" |
| 8 | |
| 9 | #include <system_error> |
| 10 | |
| 11 | #include <boost/assert.hpp> |
| 12 | |
| 13 | #include "boost/fiber/exceptions.hpp" |
| 14 | #include "boost/fiber/scheduler.hpp" |
| 15 | |
| 16 | #ifdef BOOST_HAS_ABI_HEADERS |
| 17 | # include BOOST_ABI_PREFIX |
| 18 | #endif |
| 19 | |
| 20 | namespace boost { |
| 21 | namespace fibers { |
| 22 | |
| 23 | void |
| 24 | fiber::start_() noexcept { |
| 25 | context * ctx = context::active(); |
| 26 | ctx->attach( impl_.get() ); |
| 27 | switch ( impl_->get_policy() ) { |
| 28 | case launch::post: |
| 29 | // push new fiber to ready-queue |
| 30 | // resume executing current fiber |
| 31 | ctx->get_scheduler()->schedule( impl_.get() ); |
| 32 | break; |
| 33 | case launch::dispatch: |
| 34 | // resume new fiber and push current fiber |
| 35 | // to ready-queue |
| 36 | impl_->resume( ctx); |
| 37 | break; |
| 38 | default: |
| 39 | BOOST_ASSERT_MSG( false, "unknown launch-policy"); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | void |
| 44 | fiber::join() { |
| 45 | // FIXME: must fiber::join() be synchronized? |
| 46 | if ( BOOST_UNLIKELY( context::active()->get_id() == get_id() ) ) { |
| 47 | throw fiber_error{ std::make_error_code( e: std::errc::resource_deadlock_would_occur), |
| 48 | "boost fiber: trying to join itself"}; |
| 49 | } |
| 50 | if ( BOOST_UNLIKELY( ! joinable() ) ) { |
| 51 | throw fiber_error{ std::make_error_code( e: std::errc::invalid_argument), |
| 52 | "boost fiber: fiber not joinable"}; |
| 53 | } |
| 54 | impl_->join(); |
| 55 | impl_.reset(); |
| 56 | } |
| 57 | |
| 58 | void |
| 59 | fiber::detach() { |
| 60 | if ( BOOST_UNLIKELY( ! joinable() ) ) { |
| 61 | throw fiber_error{ std::make_error_code( e: std::errc::invalid_argument), |
| 62 | "boost fiber: fiber not joinable"}; |
| 63 | } |
| 64 | impl_.reset(); |
| 65 | } |
| 66 | |
| 67 | }} |
| 68 | |
| 69 | #ifdef BOOST_HAS_ABI_HEADERS |
| 70 | # include BOOST_ABI_SUFFIX |
| 71 | #endif |
| 72 |