mirror of
https://git.FreeBSD.org/ports.git
synced 2024-11-05 22:43:24 +00:00
e8691a5cc2
for directory changes. This cuts CPU usage from 100% down to about 0.1% as well as improving the reliability of change monitoring.
75 lines
1.5 KiB
Plaintext
75 lines
1.5 KiB
Plaintext
--- check_tmp.c.orig Fri Sep 24 13:33:35 1999
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+++ check_tmp.c Tue Apr 25 00:57:56 2000
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@@ -38,6 +38,13 @@
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#endif
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#endif
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+#if __FreeBSD_version >= 500001
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+ struct kevent ev;
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+ struct kevent *evp;
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+ int fd;
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+ struct timespec ts = { 0, 0 };
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+ int kq = -1;
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+#endif
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struct listStruct *list = NULL;
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@@ -178,6 +185,22 @@
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exit(1);
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}
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+#if __FreeBSD_version >= 500001
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+ /* Set up the KQ on the target directory */
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+ fd = dirfd(dirp);
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+
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+ kq = kqueue();
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+ if (kq < 0)
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+ err(1, "kqueue");
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+
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+ ev.ident = fd;
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+ ev.filter = EVFILT_VNODE;
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+ ev.flags = EV_ADD | EV_ENABLE | EV_CLEAR;
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+ ev.fflags = NOTE_WRITE;
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+ evp = &ev;
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+ kevent(kq, 1, &evp, 0, NULL, &ts);
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+#endif
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+
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/* steup the first element of the list */
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while ((dp = readdir(dirp)) != NULL){
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if (!list) /* first time */
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@@ -266,6 +289,10 @@
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rewinddir(dirp);
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while (1){
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+
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+#if __FreeBSD_version >= 500001
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+ if (ev.fflags & NOTE_WRITE) {
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+#endif
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while ((dp = readdir(dirp)) != NULL){
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if (!(checknode(list, watchdir, dp->d_name))){
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if (replacewatchflag){
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@@ -352,11 +379,22 @@
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/* closedir(dirp); */
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}
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}
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-#ifdef 0
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+#if 0
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walklist(list);
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#endif
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list = prunelist(list);
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rewinddir(dirp);
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+
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+#if __FreeBSD_version >= 500001
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+ /* Reset event so we don't trigger on the rewinddir */
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+ kevent(kq, 1, &evp, 0, NULL, &ts);
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+
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+ /* Block until the directory changes */
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+ if (kevent(kq, 0, NULL, 1, &ev, NULL) < 0)
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+ err(1, "kevent");
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+
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+ }
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+#endif
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}
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/* closedir(dirp); */
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