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/*
* Copyright 2019-2021 OARC, Inc.
* Copyright 2017-2018 Akamai Technologies
* Copyright 2006-2016 Nominum, Inc.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include "os.h"
#include "log.h"
#include "util.h"
#include <errno.h>
#include <signal.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <poll.h>
void perf_os_blocksignal(int sig, bool 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) {
char __s[256];
perf_log_fatal("pthread_sigmask: %s", perf_strerror_r(errno, __s, sizeof(__s)));
}
}
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) {
char __s[256];
perf_log_fatal("sigaction: %s", perf_strerror_r(errno, __s, sizeof(__s)));
}
}
perf_result_t
perf_os_waituntilreadable(struct perf_net_socket* sock, int pipe_fd, int64_t timeout)
{
struct perf_net_socket* socks[] = { sock };
return perf_os_waituntilanyreadable(socks, 1, pipe_fd, timeout);
}
perf_result_t
perf_os_waituntilanyreadable(struct perf_net_socket** socks, unsigned int nfds, int pipe_fd,
int64_t timeout)
{
struct pollfd fds[nfds + 1];
size_t i;
int to, n;
for (i = 0; i < nfds; i++) {
if (perf_net_have_more(socks[i]))
return (PERF_R_SUCCESS);
fds[i].fd = socks[i]->fd;
fds[i].events = POLLIN;
}
fds[nfds].fd = pipe_fd;
fds[nfds].events = POLLIN;
if (timeout < 0) {
to = -1;
} else {
to = timeout / 1000;
if (timeout && !to) {
to = 1;
}
}
n = poll(fds, nfds + 1, to);
if (n < 0) {
if (errno != EINTR) {
char __s[256];
perf_log_fatal("select(): %s", perf_strerror_r(errno, __s, sizeof(__s)));
}
return (PERF_R_CANCELED);
} else if (n == 0) {
return (PERF_R_TIMEDOUT);
} else if (fds[nfds].revents & POLLIN) {
return (PERF_R_CANCELED);
} else {
return (PERF_R_SUCCESS);
}
}
perf_result_t
perf_os_waituntilanywritable(struct perf_net_socket** socks, unsigned int nfds, int pipe_fd,
int64_t timeout)
{
struct pollfd fds[nfds + 1];
size_t i;
int to, n;
for (i = 0; i < nfds; i++) {
fds[i].fd = socks[i]->fd;
fds[i].events = POLLOUT;
}
fds[nfds].fd = pipe_fd;
fds[nfds].events = POLLIN;
if (timeout < 0) {
to = -1;
} else {
to = timeout / 1000;
if (timeout && !to) {
to = 1;
}
}
n = poll(fds, nfds + 1, to);
if (n < 0) {
if (errno != EINTR) {
char __s[256];
perf_log_fatal("select(): %s", perf_strerror_r(errno, __s, sizeof(__s)));
}
return (PERF_R_CANCELED);
} else if (n == 0) {
return (PERF_R_TIMEDOUT);
} else if (fds[nfds].revents & POLLIN) {
return (PERF_R_CANCELED);
} else {
return (PERF_R_SUCCESS);
}
}
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