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https://github.com/dart-lang/sdk
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60a7160273
Fix Linux event handler to re-arm the timer_fd after handling a wakeup. R=zra@google.com Review-Url: https://codereview.chromium.org/2996243003 .
99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_BIN_EVENTHANDLER_LINUX_H_
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#define RUNTIME_BIN_EVENTHANDLER_LINUX_H_
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#if !defined(RUNTIME_BIN_EVENTHANDLER_H_)
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#error Do not include eventhandler_linux.h directly; use eventhandler.h instead.
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#endif
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#include <errno.h>
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#include <sys/epoll.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include "platform/hashmap.h"
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#include "platform/signal_blocker.h"
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namespace dart {
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namespace bin {
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class DescriptorInfo : public DescriptorInfoBase {
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public:
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explicit DescriptorInfo(intptr_t fd) : DescriptorInfoBase(fd) {}
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virtual ~DescriptorInfo() {}
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intptr_t GetPollEvents();
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virtual void Close() {
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VOID_TEMP_FAILURE_RETRY(close(fd_));
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fd_ = -1;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(DescriptorInfo);
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};
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class DescriptorInfoSingle : public DescriptorInfoSingleMixin<DescriptorInfo> {
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public:
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explicit DescriptorInfoSingle(intptr_t fd)
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: DescriptorInfoSingleMixin(fd, false) {}
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virtual ~DescriptorInfoSingle() {}
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private:
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DISALLOW_COPY_AND_ASSIGN(DescriptorInfoSingle);
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};
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class DescriptorInfoMultiple
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: public DescriptorInfoMultipleMixin<DescriptorInfo> {
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public:
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explicit DescriptorInfoMultiple(intptr_t fd)
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: DescriptorInfoMultipleMixin(fd, false) {}
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virtual ~DescriptorInfoMultiple() {}
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private:
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DISALLOW_COPY_AND_ASSIGN(DescriptorInfoMultiple);
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};
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class EventHandlerImplementation {
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public:
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EventHandlerImplementation();
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~EventHandlerImplementation();
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void UpdateEpollInstance(intptr_t old_mask, DescriptorInfo* di);
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// Gets the socket data structure for a given file
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// descriptor. Creates a new one if one is not found.
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DescriptorInfo* GetDescriptorInfo(intptr_t fd, bool is_listening);
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void SendData(intptr_t id, Dart_Port dart_port, int64_t data);
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void Start(EventHandler* handler);
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void Shutdown();
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private:
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void HandleEvents(struct epoll_event* events, int size);
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static void Poll(uword args);
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void WakeupHandler(intptr_t id, Dart_Port dart_port, int64_t data);
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void HandleInterruptFd();
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void UpdateTimerFd();
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void SetPort(intptr_t fd, Dart_Port dart_port, intptr_t mask);
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intptr_t GetPollEvents(intptr_t events, DescriptorInfo* di);
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static void* GetHashmapKeyFromFd(intptr_t fd);
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static uint32_t GetHashmapHashFromFd(intptr_t fd);
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HashMap socket_map_;
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TimeoutQueue timeout_queue_;
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bool shutdown_;
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int interrupt_fds_[2];
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int epoll_fd_;
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int timer_fd_;
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DISALLOW_COPY_AND_ASSIGN(EventHandlerImplementation);
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};
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} // namespace bin
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} // namespace dart
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#endif // RUNTIME_BIN_EVENTHANDLER_LINUX_H_
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