summaryrefslogtreecommitdiffstats
path: root/lib/libc/isc
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libc/isc')
-rw-r--r--lib/libc/isc/Makefile.inc6
-rw-r--r--lib/libc/isc/ev_streams.c318
-rw-r--r--lib/libc/isc/ev_timers.c515
-rw-r--r--lib/libc/isc/eventlib_p.h290
4 files changed, 1129 insertions, 0 deletions
diff --git a/lib/libc/isc/Makefile.inc b/lib/libc/isc/Makefile.inc
new file mode 100644
index 0000000..aa63ecd
--- /dev/null
+++ b/lib/libc/isc/Makefile.inc
@@ -0,0 +1,6 @@
+# $FreeBSD$
+
+# isc sources
+.PATH: ${LIBC_SRCTOP}/isc
+
+SRCS+= ev_streams.c ev_timers.c
diff --git a/lib/libc/isc/ev_streams.c b/lib/libc/isc/ev_streams.c
new file mode 100644
index 0000000..1854350
--- /dev/null
+++ b/lib/libc/isc/ev_streams.c
@@ -0,0 +1,318 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996-1999 by Internet Software Consortium
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* ev_streams.c - implement asynch stream file IO for the eventlib
+ * vix 04mar96 [initial]
+ */
+
+#if !defined(LINT) && !defined(CODECENTER)
+static const char rcsid[] = "$Id: ev_streams.c,v 1.5 2005/04/27 04:56:36 sra Exp $";
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "port_before.h"
+#ifndef _LIBC
+#include "fd_setsize.h"
+#endif
+
+#include <sys/types.h>
+#include <sys/uio.h>
+
+#include <errno.h>
+
+#include <isc/eventlib.h>
+#ifndef _LIBC
+#include <isc/assertions.h>
+#endif
+#include "eventlib_p.h"
+
+#include "port_after.h"
+
+#ifndef _LIBC
+static int copyvec(evStream *str, const struct iovec *iov, int iocnt);
+static void consume(evStream *str, size_t bytes);
+static void done(evContext opaqueCtx, evStream *str);
+static void writable(evContext opaqueCtx, void *uap, int fd, int evmask);
+static void readable(evContext opaqueCtx, void *uap, int fd, int evmask);
+#endif
+
+struct iovec
+evConsIovec(void *buf, size_t cnt) {
+ struct iovec ret;
+
+ memset(&ret, 0xf5, sizeof ret);
+ ret.iov_base = buf;
+ ret.iov_len = cnt;
+ return (ret);
+}
+
+#ifndef _LIBC
+int
+evWrite(evContext opaqueCtx, int fd, const struct iovec *iov, int iocnt,
+ evStreamFunc func, void *uap, evStreamID *id)
+{
+ evContext_p *ctx = opaqueCtx.opaque;
+ evStream *new;
+ int save;
+
+ OKNEW(new);
+ new->func = func;
+ new->uap = uap;
+ new->fd = fd;
+ new->flags = 0;
+ if (evSelectFD(opaqueCtx, fd, EV_WRITE, writable, new, &new->file) < 0)
+ goto free;
+ if (copyvec(new, iov, iocnt) < 0)
+ goto free;
+ new->prevDone = NULL;
+ new->nextDone = NULL;
+ if (ctx->streams != NULL)
+ ctx->streams->prev = new;
+ new->prev = NULL;
+ new->next = ctx->streams;
+ ctx->streams = new;
+ if (id != NULL)
+ id->opaque = new;
+ return (0);
+ free:
+ save = errno;
+ FREE(new);
+ errno = save;
+ return (-1);
+}
+
+int
+evRead(evContext opaqueCtx, int fd, const struct iovec *iov, int iocnt,
+ evStreamFunc func, void *uap, evStreamID *id)
+{
+ evContext_p *ctx = opaqueCtx.opaque;
+ evStream *new;
+ int save;
+
+ OKNEW(new);
+ new->func = func;
+ new->uap = uap;
+ new->fd = fd;
+ new->flags = 0;
+ if (evSelectFD(opaqueCtx, fd, EV_READ, readable, new, &new->file) < 0)
+ goto free;
+ if (copyvec(new, iov, iocnt) < 0)
+ goto free;
+ new->prevDone = NULL;
+ new->nextDone = NULL;
+ if (ctx->streams != NULL)
+ ctx->streams->prev = new;
+ new->prev = NULL;
+ new->next = ctx->streams;
+ ctx->streams = new;
+ if (id)
+ id->opaque = new;
+ return (0);
+ free:
+ save = errno;
+ FREE(new);
+ errno = save;
+ return (-1);
+}
+
+int
+evTimeRW(evContext opaqueCtx, evStreamID id, evTimerID timer) /*ARGSUSED*/ {
+ evStream *str = id.opaque;
+
+ UNUSED(opaqueCtx);
+
+ str->timer = timer;
+ str->flags |= EV_STR_TIMEROK;
+ return (0);
+}
+
+int
+evUntimeRW(evContext opaqueCtx, evStreamID id) /*ARGSUSED*/ {
+ evStream *str = id.opaque;
+
+ UNUSED(opaqueCtx);
+
+ str->flags &= ~EV_STR_TIMEROK;
+ return (0);
+}
+
+int
+evCancelRW(evContext opaqueCtx, evStreamID id) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evStream *old = id.opaque;
+
+ /*
+ * The streams list is doubly threaded. First, there's ctx->streams
+ * that's used by evDestroy() to find and cancel all streams. Second,
+ * there's ctx->strDone (head) and ctx->strLast (tail) which thread
+ * through the potentially smaller number of "IO completed" streams,
+ * used in evGetNext() to avoid scanning the entire list.
+ */
+
+ /* Unlink from ctx->streams. */
+ if (old->prev != NULL)
+ old->prev->next = old->next;
+ else
+ ctx->streams = old->next;
+ if (old->next != NULL)
+ old->next->prev = old->prev;
+
+ /*
+ * If 'old' is on the ctx->strDone list, remove it. Update
+ * ctx->strLast if necessary.
+ */
+ if (old->prevDone == NULL && old->nextDone == NULL) {
+ /*
+ * Either 'old' is the only item on the done list, or it's
+ * not on the done list. If the former, then we unlink it
+ * from the list. If the latter, we leave the list alone.
+ */
+ if (ctx->strDone == old) {
+ ctx->strDone = NULL;
+ ctx->strLast = NULL;
+ }
+ } else {
+ if (old->prevDone != NULL)
+ old->prevDone->nextDone = old->nextDone;
+ else
+ ctx->strDone = old->nextDone;
+ if (old->nextDone != NULL)
+ old->nextDone->prevDone = old->prevDone;
+ else
+ ctx->strLast = old->prevDone;
+ }
+
+ /* Deallocate the stream. */
+ if (old->file.opaque)
+ evDeselectFD(opaqueCtx, old->file);
+ memput(old->iovOrig, sizeof (struct iovec) * old->iovOrigCount);
+ FREE(old);
+ return (0);
+}
+
+/* Copy a scatter/gather vector and initialize a stream handler's IO. */
+static int
+copyvec(evStream *str, const struct iovec *iov, int iocnt) {
+ int i;
+
+ str->iovOrig = (struct iovec *)memget(sizeof(struct iovec) * iocnt);
+ if (str->iovOrig == NULL) {
+ errno = ENOMEM;
+ return (-1);
+ }
+ str->ioTotal = 0;
+ for (i = 0; i < iocnt; i++) {
+ str->iovOrig[i] = iov[i];
+ str->ioTotal += iov[i].iov_len;
+ }
+ str->iovOrigCount = iocnt;
+ str->iovCur = str->iovOrig;
+ str->iovCurCount = str->iovOrigCount;
+ str->ioDone = 0;
+ return (0);
+}
+
+/* Pull off or truncate lead iovec(s). */
+static void
+consume(evStream *str, size_t bytes) {
+ while (bytes > 0U) {
+ if (bytes < (size_t)str->iovCur->iov_len) {
+ str->iovCur->iov_len -= bytes;
+ str->iovCur->iov_base = (void *)
+ ((u_char *)str->iovCur->iov_base + bytes);
+ str->ioDone += bytes;
+ bytes = 0;
+ } else {
+ bytes -= str->iovCur->iov_len;
+ str->ioDone += str->iovCur->iov_len;
+ str->iovCur++;
+ str->iovCurCount--;
+ }
+ }
+}
+
+/* Add a stream to Done list and deselect the FD. */
+static void
+done(evContext opaqueCtx, evStream *str) {
+ evContext_p *ctx = opaqueCtx.opaque;
+
+ if (ctx->strLast != NULL) {
+ str->prevDone = ctx->strLast;
+ ctx->strLast->nextDone = str;
+ ctx->strLast = str;
+ } else {
+ INSIST(ctx->strDone == NULL);
+ ctx->strDone = ctx->strLast = str;
+ }
+ evDeselectFD(opaqueCtx, str->file);
+ str->file.opaque = NULL;
+ /* evDrop() will call evCancelRW() on us. */
+}
+
+/* Dribble out some bytes on the stream. (Called by evDispatch().) */
+static void
+writable(evContext opaqueCtx, void *uap, int fd, int evmask) {
+ evStream *str = uap;
+ int bytes;
+
+ UNUSED(evmask);
+
+ bytes = writev(fd, str->iovCur, str->iovCurCount);
+ if (bytes > 0) {
+ if ((str->flags & EV_STR_TIMEROK) != 0)
+ evTouchIdleTimer(opaqueCtx, str->timer);
+ consume(str, bytes);
+ } else {
+ if (bytes < 0 && errno != EINTR) {
+ str->ioDone = -1;
+ str->ioErrno = errno;
+ }
+ }
+ if (str->ioDone == -1 || str->ioDone == str->ioTotal)
+ done(opaqueCtx, str);
+}
+
+/* Scoop up some bytes from the stream. (Called by evDispatch().) */
+static void
+readable(evContext opaqueCtx, void *uap, int fd, int evmask) {
+ evStream *str = uap;
+ int bytes;
+
+ UNUSED(evmask);
+
+ bytes = readv(fd, str->iovCur, str->iovCurCount);
+ if (bytes > 0) {
+ if ((str->flags & EV_STR_TIMEROK) != 0)
+ evTouchIdleTimer(opaqueCtx, str->timer);
+ consume(str, bytes);
+ } else {
+ if (bytes == 0)
+ str->ioDone = 0;
+ else {
+ if (errno != EINTR) {
+ str->ioDone = -1;
+ str->ioErrno = errno;
+ }
+ }
+ }
+ if (str->ioDone <= 0 || str->ioDone == str->ioTotal)
+ done(opaqueCtx, str);
+}
+#endif
+
+/*! \file */
diff --git a/lib/libc/isc/ev_timers.c b/lib/libc/isc/ev_timers.c
new file mode 100644
index 0000000..7c25c67
--- /dev/null
+++ b/lib/libc/isc/ev_timers.c
@@ -0,0 +1,515 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1995-1999 by Internet Software Consortium
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* ev_timers.c - implement timers for the eventlib
+ * vix 09sep95 [initial]
+ */
+
+#if !defined(LINT) && !defined(CODECENTER)
+static const char rcsid[] = "$Id: ev_timers.c,v 1.6 2005/04/27 04:56:36 sra Exp $";
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/* Import. */
+
+#include "port_before.h"
+#ifndef _LIBC
+#include "fd_setsize.h"
+#endif
+
+#include <errno.h>
+
+#ifndef _LIBC
+#include <isc/assertions.h>
+#endif
+#include <isc/eventlib.h>
+#include "eventlib_p.h"
+
+#include "port_after.h"
+
+/* Constants. */
+
+#define MILLION 1000000
+#define BILLION 1000000000
+
+/* Forward. */
+
+#ifdef _LIBC
+static int __evOptMonoTime;
+#else
+static int due_sooner(void *, void *);
+static void set_index(void *, int);
+static void free_timer(void *, void *);
+static void print_timer(void *, void *);
+static void idle_timeout(evContext, void *, struct timespec, struct timespec);
+
+/* Private type. */
+
+typedef struct {
+ evTimerFunc func;
+ void * uap;
+ struct timespec lastTouched;
+ struct timespec max_idle;
+ evTimer * timer;
+} idle_timer;
+#endif
+
+/* Public. */
+
+struct timespec
+evConsTime(time_t sec, long nsec) {
+ struct timespec x;
+
+ x.tv_sec = sec;
+ x.tv_nsec = nsec;
+ return (x);
+}
+
+struct timespec
+evAddTime(struct timespec addend1, struct timespec addend2) {
+ struct timespec x;
+
+ x.tv_sec = addend1.tv_sec + addend2.tv_sec;
+ x.tv_nsec = addend1.tv_nsec + addend2.tv_nsec;
+ if (x.tv_nsec >= BILLION) {
+ x.tv_sec++;
+ x.tv_nsec -= BILLION;
+ }
+ return (x);
+}
+
+struct timespec
+evSubTime(struct timespec minuend, struct timespec subtrahend) {
+ struct timespec x;
+
+ x.tv_sec = minuend.tv_sec - subtrahend.tv_sec;
+ if (minuend.tv_nsec >= subtrahend.tv_nsec)
+ x.tv_nsec = minuend.tv_nsec - subtrahend.tv_nsec;
+ else {
+ x.tv_nsec = BILLION - subtrahend.tv_nsec + minuend.tv_nsec;
+ x.tv_sec--;
+ }
+ return (x);
+}
+
+int
+evCmpTime(struct timespec a, struct timespec b) {
+ long x = a.tv_sec - b.tv_sec;
+
+ if (x == 0L)
+ x = a.tv_nsec - b.tv_nsec;
+ return (x < 0L ? (-1) : x > 0L ? (1) : (0));
+}
+
+struct timespec
+evNowTime() {
+ struct timeval now;
+#ifdef CLOCK_REALTIME
+ struct timespec tsnow;
+ int m = CLOCK_REALTIME;
+
+#ifdef CLOCK_MONOTONIC
+ if (__evOptMonoTime)
+ m = CLOCK_MONOTONIC;
+#endif
+ if (clock_gettime(m, &tsnow) == 0)
+ return (tsnow);
+#endif
+ if (gettimeofday(&now, NULL) < 0)
+ return (evConsTime(0, 0));
+ return (evTimeSpec(now));
+}
+
+struct timespec
+evUTCTime() {
+ struct timeval now;
+#ifdef CLOCK_REALTIME
+ struct timespec tsnow;
+ if (clock_gettime(CLOCK_REALTIME, &tsnow) == 0)
+ return (tsnow);
+#endif
+ if (gettimeofday(&now, NULL) < 0)
+ return (evConsTime(0, 0));
+ return (evTimeSpec(now));
+}
+
+#ifndef _LIBC
+struct timespec
+evLastEventTime(evContext opaqueCtx) {
+ evContext_p *ctx = opaqueCtx.opaque;
+
+ return (ctx->lastEventTime);
+}
+#endif
+
+struct timespec
+evTimeSpec(struct timeval tv) {
+ struct timespec ts;
+
+ ts.tv_sec = tv.tv_sec;
+ ts.tv_nsec = tv.tv_usec * 1000;
+ return (ts);
+}
+
+#if !defined(USE_KQUEUE) || !defined(_LIBC)
+struct timeval
+evTimeVal(struct timespec ts) {
+ struct timeval tv;
+
+ tv.tv_sec = ts.tv_sec;
+ tv.tv_usec = ts.tv_nsec / 1000;
+ return (tv);
+}
+#endif
+
+#ifndef _LIBC
+int
+evSetTimer(evContext opaqueCtx,
+ evTimerFunc func,
+ void *uap,
+ struct timespec due,
+ struct timespec inter,
+ evTimerID *opaqueID
+) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evTimer *id;
+
+ evPrintf(ctx, 1,
+"evSetTimer(ctx %p, func %p, uap %p, due %ld.%09ld, inter %ld.%09ld)\n",
+ ctx, func, uap,
+ (long)due.tv_sec, due.tv_nsec,
+ (long)inter.tv_sec, inter.tv_nsec);
+
+#ifdef __hpux
+ /*
+ * tv_sec and tv_nsec are unsigned.
+ */
+ if (due.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+
+ if (inter.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+#else
+ if (due.tv_sec < 0 || due.tv_nsec < 0 || due.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+
+ if (inter.tv_sec < 0 || inter.tv_nsec < 0 || inter.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+#endif
+
+ /* due={0,0} is a magic cookie meaning "now." */
+ if (due.tv_sec == (time_t)0 && due.tv_nsec == 0L)
+ due = evNowTime();
+
+ /* Allocate and fill. */
+ OKNEW(id);
+ id->func = func;
+ id->uap = uap;
+ id->due = due;
+ id->inter = inter;
+
+ if (heap_insert(ctx->timers, id) < 0)
+ return (-1);
+
+ /* Remember the ID if the caller provided us a place for it. */
+ if (opaqueID)
+ opaqueID->opaque = id;
+
+ if (ctx->debug > 7) {
+ evPrintf(ctx, 7, "timers after evSetTimer:\n");
+ (void) heap_for_each(ctx->timers, print_timer, (void *)ctx);
+ }
+
+ return (0);
+}
+
+int
+evClearTimer(evContext opaqueCtx, evTimerID id) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evTimer *del = id.opaque;
+
+ if (ctx->cur != NULL &&
+ ctx->cur->type == Timer &&
+ ctx->cur->u.timer.this == del) {
+ evPrintf(ctx, 8, "deferring delete of timer (executing)\n");
+ /*
+ * Setting the interval to zero ensures that evDrop() will
+ * clean up the timer.
+ */
+ del->inter = evConsTime(0, 0);
+ return (0);
+ }
+
+ if (heap_element(ctx->timers, del->index) != del)
+ EV_ERR(ENOENT);
+
+ if (heap_delete(ctx->timers, del->index) < 0)
+ return (-1);
+ FREE(del);
+
+ if (ctx->debug > 7) {
+ evPrintf(ctx, 7, "timers after evClearTimer:\n");
+ (void) heap_for_each(ctx->timers, print_timer, (void *)ctx);
+ }
+
+ return (0);
+}
+
+int
+evConfigTimer(evContext opaqueCtx,
+ evTimerID id,
+ const char *param,
+ int value
+) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evTimer *timer = id.opaque;
+ int result=0;
+
+ UNUSED(value);
+
+ if (heap_element(ctx->timers, timer->index) != timer)
+ EV_ERR(ENOENT);
+
+ if (strcmp(param, "rate") == 0)
+ timer->mode |= EV_TMR_RATE;
+ else if (strcmp(param, "interval") == 0)
+ timer->mode &= ~EV_TMR_RATE;
+ else
+ EV_ERR(EINVAL);
+
+ return (result);
+}
+
+int
+evResetTimer(evContext opaqueCtx,
+ evTimerID id,
+ evTimerFunc func,
+ void *uap,
+ struct timespec due,
+ struct timespec inter
+) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evTimer *timer = id.opaque;
+ struct timespec old_due;
+ int result=0;
+
+ if (heap_element(ctx->timers, timer->index) != timer)
+ EV_ERR(ENOENT);
+
+#ifdef __hpux
+ /*
+ * tv_sec and tv_nsec are unsigned.
+ */
+ if (due.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+
+ if (inter.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+#else
+ if (due.tv_sec < 0 || due.tv_nsec < 0 || due.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+
+ if (inter.tv_sec < 0 || inter.tv_nsec < 0 || inter.tv_nsec >= BILLION)
+ EV_ERR(EINVAL);
+#endif
+
+ old_due = timer->due;
+
+ timer->func = func;
+ timer->uap = uap;
+ timer->due = due;
+ timer->inter = inter;
+
+ switch (evCmpTime(due, old_due)) {
+ case -1:
+ result = heap_increased(ctx->timers, timer->index);
+ break;
+ case 0:
+ result = 0;
+ break;
+ case 1:
+ result = heap_decreased(ctx->timers, timer->index);
+ break;
+ }
+
+ if (ctx->debug > 7) {
+ evPrintf(ctx, 7, "timers after evResetTimer:\n");
+ (void) heap_for_each(ctx->timers, print_timer, (void *)ctx);
+ }
+
+ return (result);
+}
+
+int
+evSetIdleTimer(evContext opaqueCtx,
+ evTimerFunc func,
+ void *uap,
+ struct timespec max_idle,
+ evTimerID *opaqueID
+) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ idle_timer *tt;
+
+ /* Allocate and fill. */
+ OKNEW(tt);
+ tt->func = func;
+ tt->uap = uap;
+ tt->lastTouched = ctx->lastEventTime;
+ tt->max_idle = max_idle;
+
+ if (evSetTimer(opaqueCtx, idle_timeout, tt,
+ evAddTime(ctx->lastEventTime, max_idle),
+ max_idle, opaqueID) < 0) {
+ FREE(tt);
+ return (-1);
+ }
+
+ tt->timer = opaqueID->opaque;
+
+ return (0);
+}
+
+int
+evClearIdleTimer(evContext opaqueCtx, evTimerID id) {
+ evTimer *del = id.opaque;
+ idle_timer *tt = del->uap;
+
+ FREE(tt);
+ return (evClearTimer(opaqueCtx, id));
+}
+
+int
+evResetIdleTimer(evContext opaqueCtx,
+ evTimerID opaqueID,
+ evTimerFunc func,
+ void *uap,
+ struct timespec max_idle
+) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evTimer *timer = opaqueID.opaque;
+ idle_timer *tt = timer->uap;
+
+ tt->func = func;
+ tt->uap = uap;
+ tt->lastTouched = ctx->lastEventTime;
+ tt->max_idle = max_idle;
+
+ return (evResetTimer(opaqueCtx, opaqueID, idle_timeout, tt,
+ evAddTime(ctx->lastEventTime, max_idle),
+ max_idle));
+}
+
+int
+evTouchIdleTimer(evContext opaqueCtx, evTimerID id) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ evTimer *t = id.opaque;
+ idle_timer *tt = t->uap;
+
+ tt->lastTouched = ctx->lastEventTime;
+
+ return (0);
+}
+
+/* Public to the rest of eventlib. */
+
+heap_context
+evCreateTimers(const evContext_p *ctx) {
+
+ UNUSED(ctx);
+
+ return (heap_new(due_sooner, set_index, 2048));
+}
+
+void
+evDestroyTimers(const evContext_p *ctx) {
+ (void) heap_for_each(ctx->timers, free_timer, NULL);
+ (void) heap_free(ctx->timers);
+}
+
+/* Private. */
+
+static int
+due_sooner(void *a, void *b) {
+ evTimer *a_timer, *b_timer;
+
+ a_timer = a;
+ b_timer = b;
+ return (evCmpTime(a_timer->due, b_timer->due) < 0);
+}
+
+static void
+set_index(void *what, int index) {
+ evTimer *timer;
+
+ timer = what;
+ timer->index = index;
+}
+
+static void
+free_timer(void *what, void *uap) {
+ evTimer *t = what;
+
+ UNUSED(uap);
+
+ FREE(t);
+}
+
+static void
+print_timer(void *what, void *uap) {
+ evTimer *cur = what;
+ evContext_p *ctx = uap;
+
+ cur = what;
+ evPrintf(ctx, 7,
+ " func %p, uap %p, due %ld.%09ld, inter %ld.%09ld\n",
+ cur->func, cur->uap,
+ (long)cur->due.tv_sec, cur->due.tv_nsec,
+ (long)cur->inter.tv_sec, cur->inter.tv_nsec);
+}
+
+static void
+idle_timeout(evContext opaqueCtx,
+ void *uap,
+ struct timespec due,
+ struct timespec inter
+) {
+ evContext_p *ctx = opaqueCtx.opaque;
+ idle_timer *this = uap;
+ struct timespec idle;
+
+ UNUSED(due);
+ UNUSED(inter);
+
+ idle = evSubTime(ctx->lastEventTime, this->lastTouched);
+ if (evCmpTime(idle, this->max_idle) >= 0) {
+ (this->func)(opaqueCtx, this->uap, this->timer->due,
+ this->max_idle);
+ /*
+ * Setting the interval to zero will cause the timer to
+ * be cleaned up in evDrop().
+ */
+ this->timer->inter = evConsTime(0, 0);
+ FREE(this);
+ } else {
+ /* evDrop() will reschedule the timer. */
+ this->timer->inter = evSubTime(this->max_idle, idle);
+ }
+}
+#endif
+
+/*! \file */
diff --git a/lib/libc/isc/eventlib_p.h b/lib/libc/isc/eventlib_p.h
new file mode 100644
index 0000000..8620aeb
--- /dev/null
+++ b/lib/libc/isc/eventlib_p.h
@@ -0,0 +1,290 @@
+/*
+ * Copyright (c) 2005 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1995-1999 by Internet Software Consortium
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*! \file
+ * \brief private interfaces for eventlib
+ * \author vix 09sep95 [initial]
+ *
+ * $Id: eventlib_p.h,v 1.9 2006/03/09 23:57:56 marka Exp $
+ * $FreeBSD$
+ */
+
+#ifndef _EVENTLIB_P_H
+#define _EVENTLIB_P_H
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/un.h>
+
+#define EVENTLIB_DEBUG 1
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef _LIBC
+#include <isc/list.h>
+#include <isc/heap.h>
+#include <isc/memcluster.h>
+#endif
+
+#define EV_MASK_ALL (EV_READ | EV_WRITE | EV_EXCEPT)
+#define EV_ERR(e) return (errno = (e), -1)
+#define OK(x) if ((x) < 0) EV_ERR(errno); else (void)NULL
+#define OKFREE(x, y) if ((x) < 0) { FREE((y)); EV_ERR(errno); } \
+ else (void)NULL
+
+#define NEW(p) if (((p) = memget(sizeof *(p))) != NULL) \
+ FILL(p); \
+ else \
+ (void)NULL;
+#define OKNEW(p) if (!((p) = memget(sizeof *(p)))) { \
+ errno = ENOMEM; \
+ return (-1); \
+ } else \
+ FILL(p)
+#define FREE(p) memput((p), sizeof *(p))
+
+#if EVENTLIB_DEBUG
+#define FILL(p) memset((p), 0xF5, sizeof *(p))
+#else
+#define FILL(p)
+#endif
+
+#ifdef USE_POLL
+#ifdef HAVE_STROPTS_H
+#include <stropts.h>
+#endif
+#include <poll.h>
+#endif /* USE_POLL */
+
+typedef struct evConn {
+ evConnFunc func;
+ void * uap;
+ int fd;
+ int flags;
+#define EV_CONN_LISTEN 0x0001 /*%< Connection is a listener. */
+#define EV_CONN_SELECTED 0x0002 /*%< evSelectFD(conn->file). */
+#define EV_CONN_BLOCK 0x0004 /*%< Listener fd was blocking. */
+ evFileID file;
+ struct evConn * prev;
+ struct evConn * next;
+} evConn;
+
+#ifndef _LIBC
+typedef struct evAccept {
+ int fd;
+ union {
+ struct sockaddr sa;
+ struct sockaddr_in in;
+#ifndef NO_SOCKADDR_UN
+ struct sockaddr_un un;
+#endif
+ } la;
+ ISC_SOCKLEN_T lalen;
+ union {
+ struct sockaddr sa;
+ struct sockaddr_in in;
+#ifndef NO_SOCKADDR_UN
+ struct sockaddr_un un;
+#endif
+ } ra;
+ ISC_SOCKLEN_T ralen;
+ int ioErrno;
+ evConn * conn;
+ LINK(struct evAccept) link;
+} evAccept;
+
+typedef struct evFile {
+ evFileFunc func;
+ void * uap;
+ int fd;
+ int eventmask;
+ int preemptive;
+ struct evFile * prev;
+ struct evFile * next;
+ struct evFile * fdprev;
+ struct evFile * fdnext;
+} evFile;
+
+typedef struct evStream {
+ evStreamFunc func;
+ void * uap;
+ evFileID file;
+ evTimerID timer;
+ int flags;
+#define EV_STR_TIMEROK 0x0001 /*%< IFF timer valid. */
+ int fd;
+ struct iovec * iovOrig;
+ int iovOrigCount;
+ struct iovec * iovCur;
+ int iovCurCount;
+ int ioTotal;
+ int ioDone;
+ int ioErrno;
+ struct evStream *prevDone, *nextDone;
+ struct evStream *prev, *next;
+} evStream;
+
+typedef struct evTimer {
+ evTimerFunc func;
+ void * uap;
+ struct timespec due, inter;
+ int index;
+ int mode;
+#define EV_TMR_RATE 1
+} evTimer;
+
+typedef struct evWait {
+ evWaitFunc func;
+ void * uap;
+ const void * tag;
+ struct evWait * next;
+} evWait;
+
+typedef struct evWaitList {
+ evWait * first;
+ evWait * last;
+ struct evWaitList * prev;
+ struct evWaitList * next;
+} evWaitList;
+
+typedef struct evEvent_p {
+ enum { Accept, File, Stream, Timer, Wait, Free, Null } type;
+ union {
+ struct { evAccept *this; } accept;
+ struct { evFile *this; int eventmask; } file;
+ struct { evStream *this; } stream;
+ struct { evTimer *this; } timer;
+ struct { evWait *this; } wait;
+ struct { struct evEvent_p *next; } free;
+ struct { const void *placeholder; } null;
+ } u;
+} evEvent_p;
+#endif
+
+#ifdef USE_POLL
+typedef struct {
+ void *ctx; /* pointer to the evContext_p */
+ uint32_t type; /* READ, WRITE, EXCEPT, nonblk */
+ uint32_t result; /* 1 => revents, 0 => events */
+} __evEmulMask;
+
+#define emulMaskInit(ctx, field, ev, lastnext) \
+ ctx->field.ctx = ctx; \
+ ctx->field.type = ev; \
+ ctx->field.result = lastnext;
+
+extern short *__fd_eventfield(int fd, __evEmulMask *maskp);
+extern short __poll_event(__evEmulMask *maskp);
+extern void __fd_clr(int fd, __evEmulMask *maskp);
+extern void __fd_set(int fd, __evEmulMask *maskp);
+
+#undef FD_ZERO
+#define FD_ZERO(maskp)
+
+#undef FD_SET
+#define FD_SET(fd, maskp) \
+ __fd_set(fd, maskp)
+
+#undef FD_CLR
+#define FD_CLR(fd, maskp) \
+ __fd_clr(fd, maskp)
+
+#undef FD_ISSET
+#define FD_ISSET(fd, maskp) \
+ ((*__fd_eventfield(fd, maskp) & __poll_event(maskp)) != 0)
+
+#endif /* USE_POLL */
+
+#ifndef _LIBC
+typedef struct {
+ /* Global. */
+ const evEvent_p *cur;
+ /* Debugging. */
+ int debug;
+ FILE *output;
+ /* Connections. */
+ evConn *conns;
+ LIST(evAccept) accepts;
+ /* Files. */
+ evFile *files, *fdNext;
+#ifndef USE_POLL
+ fd_set rdLast, rdNext;
+ fd_set wrLast, wrNext;
+ fd_set exLast, exNext;
+ fd_set nonblockBefore;
+ int fdMax, fdCount, highestFD;
+ evFile *fdTable[FD_SETSIZE];
+#else
+ struct pollfd *pollfds; /* Allocated as needed */
+ evFile **fdTable; /* Ditto */
+ int maxnfds; /* # elements in above */
+ int firstfd; /* First active fd */
+ int fdMax; /* Last active fd */
+ int fdCount; /* # fd:s with I/O */
+ int highestFD; /* max fd allowed by OS */
+ __evEmulMask rdLast, rdNext;
+ __evEmulMask wrLast, wrNext;
+ __evEmulMask exLast, exNext;
+ __evEmulMask nonblockBefore;
+#endif /* USE_POLL */
+#ifdef EVENTLIB_TIME_CHECKS
+ struct timespec lastSelectTime;
+ int lastFdCount;
+#endif
+ /* Streams. */
+ evStream *streams;
+ evStream *strDone, *strLast;
+ /* Timers. */
+ struct timespec lastEventTime;
+ heap_context timers;
+ /* Waits. */
+ evWaitList *waitLists;
+ evWaitList waitDone;
+} evContext_p;
+
+/* eventlib.c */
+#define evPrintf __evPrintf
+void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...)
+ ISC_FORMAT_PRINTF(3, 4);
+
+#ifdef USE_POLL
+extern int evPollfdRealloc(evContext_p *ctx, int pollfd_chunk_size, int fd);
+#endif /* USE_POLL */
+
+/* ev_timers.c */
+#define evCreateTimers __evCreateTimers
+heap_context evCreateTimers(const evContext_p *);
+#define evDestroyTimers __evDestroyTimers
+void evDestroyTimers(const evContext_p *);
+
+/* ev_waits.c */
+#define evFreeWait __evFreeWait
+evWait *evFreeWait(evContext_p *ctx, evWait *old);
+#endif
+
+/* Global options */
+#ifndef _LIBC
+extern int __evOptMonoTime;
+#endif
+
+#endif /*_EVENTLIB_P_H*/
OpenPOWER on IntegriCloud