sgjesse@google.com
0518874077
R=kustermann@google.com, wibling@google.com BUG= Review URL: https://codereview.chromium.org//939643002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@43838 260f80e4-7a28-3924-810f-c04153c831b5
120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
// Copyright (c) 2013, 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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#include "platform/globals.h"
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#if defined(TARGET_OS_LINUX)
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#include "bin/file_system_watcher.h"
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#include <errno.h> // NOLINT
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#include <sys/inotify.h> // NOLINT
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#include "bin/fdutils.h"
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#include "bin/socket.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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bool FileSystemWatcher::IsSupported() {
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return true;
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}
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intptr_t FileSystemWatcher::Init() {
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int id = NO_RETRY_EXPECTED(inotify_init1(IN_CLOEXEC));
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if (id < 0) return -1;
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// Some systems dosn't support setting this as non-blocking. Since watching
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// internals are kept away from the user, we know it's possible to continue,
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// even if setting non-blocking fails.
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FDUtils::SetNonBlocking(id);
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return id;
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}
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void FileSystemWatcher::Close(intptr_t id) {
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USE(id);
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}
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intptr_t FileSystemWatcher::WatchPath(intptr_t id,
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const char* path,
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int events,
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bool recursive) {
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int list_events = IN_DELETE_SELF | IN_MOVE_SELF;
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if (events & kCreate) list_events |= IN_CREATE;
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if (events & kModifyContent) list_events |= IN_CLOSE_WRITE | IN_ATTRIB;
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if (events & kDelete) list_events |= IN_DELETE;
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if (events & kMove) list_events |= IN_MOVE;
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int path_id = NO_RETRY_EXPECTED(inotify_add_watch(id, path, list_events));
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if (path_id < 0) {
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return -1;
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}
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return path_id;
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}
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void FileSystemWatcher::UnwatchPath(intptr_t id, intptr_t path_id) {
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VOID_NO_RETRY_EXPECTED(inotify_rm_watch(id, path_id));
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}
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intptr_t FileSystemWatcher::GetSocketId(intptr_t id, intptr_t path_id) {
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USE(path_id);
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return id;
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}
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Dart_Handle FileSystemWatcher::ReadEvents(intptr_t id, intptr_t path_id) {
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USE(path_id);
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const intptr_t kEventSize = sizeof(struct inotify_event);
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const intptr_t kBufferSize = kEventSize + NAME_MAX + 1;
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uint8_t buffer[kBufferSize];
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intptr_t bytes = Socket::Read(id, buffer, kBufferSize);
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if (bytes < 0) {
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return DartUtils::NewDartOSError();
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}
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const intptr_t kMaxCount = bytes / kEventSize;
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Dart_Handle events = Dart_NewList(kMaxCount);
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intptr_t offset = 0;
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intptr_t i = 0;
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while (offset < bytes) {
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struct inotify_event* e =
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reinterpret_cast<struct inotify_event*>(buffer + offset);
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if ((e->mask & IN_IGNORED) == 0) {;
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Dart_Handle event = Dart_NewList(5);
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int mask = 0;
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if (e->mask & IN_CLOSE_WRITE) mask |= kModifyContent;
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if (e->mask & IN_ATTRIB) mask |= kModefyAttribute;
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if (e->mask & IN_CREATE) mask |= kCreate;
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if (e->mask & IN_MOVE) mask |= kMove;
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if (e->mask & IN_DELETE) mask |= kDelete;
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if (e->mask & (IN_DELETE_SELF | IN_MOVE_SELF)) mask |= kDeleteSelf;
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if (e->mask & IN_ISDIR) mask |= kIsDir;
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Dart_ListSetAt(event, 0, Dart_NewInteger(mask));
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Dart_ListSetAt(event, 1, Dart_NewInteger(e->cookie));
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if (e->len > 0) {
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Dart_ListSetAt(event, 2, Dart_NewStringFromUTF8(
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reinterpret_cast<uint8_t*>(e->name), strlen(e->name)));
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} else {
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Dart_ListSetAt(event, 2, Dart_Null());
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}
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Dart_ListSetAt(event, 3, Dart_NewBoolean(e->mask & IN_MOVED_TO));
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Dart_ListSetAt(event, 4, Dart_NewInteger(e->wd));
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Dart_ListSetAt(events, i, event);
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i++;
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}
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offset += kEventSize + e->len;
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}
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ASSERT(offset == bytes);
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return events;
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(TARGET_OS_LINUX)
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