added dnsperf

dns/dnsperf-src-2.0.0.0-1/os.c

@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2011 - 2012 Nominum, Inc.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation 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 NOMINUM DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM 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.
+ */
+
+#include <errno.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/select.h>
+
+#include <isc/result.h>
+#include <isc/types.h>
+
+#include "log.h"
+#include "os.h"
+#include "util.h"
+
+void
+perf_os_blocksignal(int sig, isc_boolean_t block)
+{
+	sigset_t sset;
+	int op;
+
+	op = block ? SIG_BLOCK : SIG_UNBLOCK;
+
+	if (sigemptyset(&sset) < 0 ||
+	    sigaddset(&sset, sig) < 0 ||
+	    pthread_sigmask(op, &sset, NULL) < 0)
+		perf_log_fatal("pthread_sigmask: %s", strerror(errno));
+}
+
+void
+perf_os_handlesignal(int sig, void (*handler)(int))
+{
+	struct sigaction sa;
+
+	memset(&sa, 0, sizeof(sa));
+	sa.sa_handler = handler;
+
+	if (sigfillset(&sa.sa_mask) < 0 ||
+	    sigaction(sig, &sa, NULL) < 0)
+		perf_log_fatal("sigaction: %s", strerror(errno));
+}
+
+isc_result_t
+perf_os_waituntilreadable(int fd, int pipe_fd, isc_int64_t timeout)
+{
+	fd_set read_fds;
+	int maxfd;
+	struct timeval tv, *tvp;
+	int n;
+
+	FD_ZERO(&read_fds);
+	FD_SET(fd, &read_fds);
+	FD_SET(pipe_fd, &read_fds);
+	maxfd = pipe_fd > fd ? pipe_fd : fd;
+	if (timeout < 0) {
+		tvp = NULL;
+	} else {
+		tv.tv_sec = timeout / MILLION;
+		tv.tv_usec = timeout % MILLION;
+		tvp = &tv;
+	}
+	n = select(maxfd + 1, &read_fds, NULL, NULL, tvp);
+	if (n < 0) {
+		if (errno != EINTR)
+			perf_log_fatal("select() failed");
+		return (ISC_R_CANCELED);
+	} else if (FD_ISSET(fd, &read_fds)) {
+		return (ISC_R_SUCCESS);
+	} else if (FD_ISSET(pipe_fd, &read_fds)) {
+		return (ISC_R_CANCELED);
+	} else {
+		return (ISC_R_TIMEDOUT);
+	}
+}