Add ServerBench.cpp
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177
ServerBench.cpp
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177
ServerBench.cpp
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#include <errno.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string>
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#include <string_view>
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#include <sys/resource.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <thread>
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#include <unistd.h>
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#include "ConflictSet.h"
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#include "third_party/nadeau.h"
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void workload(weaselab::ConflictSet *cs) {
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int64_t version = 0;
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constexpr int kWindowSize = 45e6;
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for (;;) {
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uint8_t buf[sizeof(version)];
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int64_t be = __builtin_bswap64(version);
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memcpy(buf, &be, sizeof(be));
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weaselab::ConflictSet::WriteRange w;
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w.begin.p = buf;
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w.begin.len = sizeof(buf);
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w.end.len = 0;
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cs->addWrites(&w, 1, version);
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++version;
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if (version - kWindowSize >= 0) {
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cs->setOldestVersion(version - kWindowSize);
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}
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}
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}
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// Adapted from getaddrinfo man page
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int getListenFd(const char *node, const char *service) {
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struct addrinfo hints;
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struct addrinfo *result, *rp;
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int sfd, s;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */
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hints.ai_socktype = SOCK_STREAM; /* stream socket */
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hints.ai_flags = AI_PASSIVE; /* For wildcard IP address */
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hints.ai_protocol = 0; /* Any protocol */
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hints.ai_canonname = nullptr;
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hints.ai_addr = nullptr;
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hints.ai_next = nullptr;
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s = getaddrinfo(node, service, &hints, &result);
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if (s != 0) {
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fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
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abort();
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}
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/* getaddrinfo() returns a list of address structures.
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Try each address until we successfully bind(2).
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If socket(2) (or bind(2)) fails, we (close the socket
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and) try the next address. */
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for (rp = result; rp != nullptr; rp = rp->ai_next) {
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sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
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if (sfd == -1) {
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continue;
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}
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int val = 1;
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setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
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if (bind(sfd, rp->ai_addr, rp->ai_addrlen) == 0) {
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break; /* Success */
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}
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close(sfd);
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}
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freeaddrinfo(result); /* No longer needed */
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if (rp == nullptr) { /* No address succeeded */
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fprintf(stderr, "Could not bind\n");
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abort();
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}
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int rv = listen(sfd, SOMAXCONN);
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if (rv) {
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perror("listen()");
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abort();
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}
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return sfd;
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}
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// HTTP response
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//
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std::string_view part1 =
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"HTTP/1.1 200 OK \r\nContent-type: text/plain; version=0.0.4; "
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"charset=utf-8; escaping=values\r\nContent-Length: ";
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// Decimal content length
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std::string_view part2 = "\r\n\r\n";
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// Body
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double toSeconds(timeval t) {
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return double(t.tv_sec) + double(t.tv_usec) * 1e-6;
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}
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int main(int argc, char **argv) {
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if (argc != 3) {
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goto fail;
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}
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{
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int listenFd = getListenFd(argv[1], argv[2]);
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weaselab::ConflictSet cs{0};
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weaselab::ConflictSet::MetricsV1 *metrics;
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int metricsCount;
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cs.getMetricsV1(&metrics, &metricsCount);
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auto w = std::thread{workload, &cs};
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for (;;) {
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struct sockaddr_storage peer_addr = {};
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socklen_t peer_addr_len = sizeof(peer_addr);
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const int connfd =
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accept(listenFd, (struct sockaddr *)&peer_addr, &peer_addr_len);
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std::string body;
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rusage r;
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getrusage(RUSAGE_SELF, &r);
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body += "# HELP process_cpu_seconds_total Total user and system CPU time "
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"spent in seconds.\n# TYPE process_cpu_seconds_total counter\n"
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"process_cpu_seconds_total ";
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body += std::to_string(toSeconds(r.ru_utime) + toSeconds(r.ru_stime));
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body += "\n";
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body += "# HELP process_resident_memory_bytes Resident memory size in "
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"bytes.\n# TYPE process_resident_memory_bytes gauge\n"
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"process_resident_memory_bytes ";
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body += std::to_string(getCurrentRSS());
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body += "\n";
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for (int i = 0; i < metricsCount; ++i) {
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body += "# HELP ";
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body += metrics[i].name;
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body += " ";
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body += metrics[i].help;
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body += "\n";
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body += "# TYPE ";
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body += metrics[i].name;
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body += " ";
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body += metrics[i].type == metrics[i].Counter ? "counter" : "gauge";
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body += "\n";
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body += metrics[i].name;
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body += " ";
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body += std::to_string(metrics[i].getValue());
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body += "\n";
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}
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auto len = std::to_string(body.size());
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iovec iov[] = {
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{(void *)part1.data(), part1.size()},
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{(void *)len.data(), len.size()},
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{(void *)part2.data(), part2.size()},
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{(void *)body.data(), body.size()},
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};
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int written;
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do {
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written = writev(connfd, iov, sizeof(iov) / sizeof(iov[0]));
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} while (written < 0 && errno == EINTR);
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close(connfd);
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}
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}
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fail:
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fprintf(stderr, "Expected ./%s <host> <port>\n", argv[0]);
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return 1;
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}
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