Merge pull request #111 from vibe-d/polling_watcher_refactor
Separate the polling logic of PollEventDriverWatchers into a separate class merged-on-behalf-of: Leonid Kramer <l-kramer@users.noreply.github.com>
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commit
4194edb98a
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@ -332,40 +332,6 @@ final class PollEventDriverWatchers(Events : EventDriverEvents) : EventDriverWat
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immutable string m_basePath;
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immutable bool m_recursive;
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immutable FileChangesCallback m_callback;
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final static class Entry {
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Entry parent;
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string name;
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ulong size;
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long lastChange;
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this(Entry parent, string name, ulong size, long lastChange)
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{
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this.parent = parent;
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this.name = name;
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this.size = size;
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this.lastChange = lastChange;
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}
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string path()
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{
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import std.path : buildPath;
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if (parent)
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return buildPath(parent.path, name);
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else return name;
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}
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bool isDir() const { return size == ulong.max; }
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}
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struct Key {
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Entry parent;
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string name;
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}
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// used only within the polling thread
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Entry[Key] m_entries;
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size_t m_entryCount;
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}
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this(shared(Events) event_driver, EventID event, string path, bool recursive, FileChangesCallback callback)
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@ -378,7 +344,6 @@ final class PollEventDriverWatchers(Events : EventDriverEvents) : EventDriverWat
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m_basePath = path;
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m_recursive = recursive;
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m_callback = callback;
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scan(false);
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try super(&run);
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catch (Exception e) assert(false, e.msg);
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@ -407,8 +372,16 @@ final class PollEventDriverWatchers(Events : EventDriverEvents) : EventDriverWat
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import core.time : MonoTime, msecs;
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import std.algorithm.comparison : min;
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auto poller = new DirectoryPoller(m_basePath, m_recursive, (ch) {
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try synchronized (m_changesMutex) {
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m_changes ~= ch;
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} catch (Exception e) assert(false, "Mutex lock failed: "~e.msg);
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});
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poller.scan(false);
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try while (true) {
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auto timeout = MonoTime.currTime() + min(m_entryCount, 60000).msecs + 1000.msecs;
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auto timeout = MonoTime.currTime() + min(poller.entryCount, 60000).msecs + 1000.msecs;
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while (true) {
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try synchronized (m_changesMutex) {
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if (m_changesEvent == EventID.invalid) return;
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@ -418,7 +391,7 @@ final class PollEventDriverWatchers(Events : EventDriverEvents) : EventDriverWat
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sleep(min(1000.msecs, remaining));
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}
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scan(true);
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poller.scan(true);
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try synchronized (m_changesMutex) {
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if (m_changesEvent == EventID.invalid) return;
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@ -434,11 +407,62 @@ final class PollEventDriverWatchers(Events : EventDriverEvents) : EventDriverWat
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}
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}
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}
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private final class DirectoryPoller {
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private final static class Entry {
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Entry parent;
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string name;
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ulong size;
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long lastChange;
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this(Entry parent, string name, ulong size, long lastChange)
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{
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this.parent = parent;
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this.name = name;
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this.size = size;
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this.lastChange = lastChange;
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}
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string path()
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{
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import std.path : buildPath;
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if (parent)
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return buildPath(parent.path, name);
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else return name;
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}
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bool isDir() const { return size == ulong.max; }
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}
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private struct Key {
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Entry parent;
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string name;
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}
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alias ChangeCallback = void delegate(FileChange) @safe nothrow;
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private {
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immutable string m_basePath;
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immutable bool m_recursive;
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Entry[Key] m_entries;
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size_t m_entryCount;
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ChangeCallback m_onChange;
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}
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this(string path, bool recursive, ChangeCallback on_change)
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{
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m_basePath = path;
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m_recursive = recursive;
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m_onChange = on_change;
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}
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@property size_t entryCount() const { return m_entryCount; }
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private void addChange(FileChangeKind kind, Key key, bool is_dir)
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{
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try synchronized (m_changesMutex) {
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m_changes ~= FileChange(kind, m_basePath, key.parent ? key.parent.path : "", key.name, is_dir);
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} catch (Exception e) assert(false, "Mutex lock failed: "~e.msg);
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m_onChange(FileChange(kind, m_basePath, key.parent ? key.parent.path : "", key.name, is_dir));
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}
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private void scan(bool generate_changes)
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@ -50,18 +50,24 @@ void main()
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}
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});
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auto fil = File(testDir~"/"~testFilename, "wt");
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File fil;
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auto tm = eventDriver.timers.create();
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eventDriver.timers.set(tm, 1500.msecs, 0.msecs);
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eventDriver.timers.set(tm, 500.msecs, 0.msecs);
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eventDriver.timers.wait(tm, (tm) {
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scope (failure) assert(false);
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fil.write("test");
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fil.close();
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try fil = File(testDir~"/"~testFilename, "wt");
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catch (Exception e) assert(false, e.msg);
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eventDriver.timers.set(tm, 1500.msecs, 0.msecs);
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eventDriver.timers.wait(tm, (tm) {
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scope (failure) assert(false);
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remove(testDir~"/"~testFilename);
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fil.write("test");
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fil.close();
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eventDriver.timers.set(tm, 1500.msecs, 0.msecs);
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eventDriver.timers.wait(tm, (tm) {
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scope (failure) assert(false);
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remove(testDir~"/"~testFilename);
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});
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});
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});
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