82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
#include <algorithm>
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#include <arpa/inet.h>
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#include <cstddef>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <ctime>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <csignal>
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#include <iostream>
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#include <iomanip>
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#include <tuple>
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#include <unistd.h>
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int makeSocket() {
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int sockfd;
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if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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perror("socket failed");
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exit(EXIT_FAILURE);
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}
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return sockfd;
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}
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void connectTo(int sock, const char* host, int port) {
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struct sockaddr_in serv_addr;
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_addr.s_addr = inet_addr(host);
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serv_addr.sin_port = htons(port);
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if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
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perror("Connection failed");
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exit(EXIT_FAILURE);
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}
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printf("Connected to %s: %d\n", host, port);
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}
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int main(int argc, char* argv[]) {
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if (argc != 2) {
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printf("Usage: ./prov.out timeout (ms)");
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exit(EXIT_FAILURE);
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}
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int timeout = atoi(argv[1]);
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//printf("Selected timeout: %f", static_cast<double>(timeout) / 1000);
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int socket = makeSocket();
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connectTo(socket, "127.0.0.1", 7777);
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//allocating 100 megabytes of memory
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uint64_t* chunky_boy = new uint64_t[67108];
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size_t chunky_boy_size = 67108 * sizeof(uint64_t);
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printf("chonky size %d", static_cast<int>(chunky_boy_size));
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//setting memory to verify non-emptyness
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memset(chunky_boy, 45678, chunky_boy_size);
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int buffer_size = 1024 * 32;
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for ( ;;) {
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for ( int j = 0; j < chunky_boy_size; ) {
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ssize_t bytes = send(socket, reinterpret_cast<char*>(chunky_boy) + j, std::min(static_cast<int>(chunky_boy_size) - j, buffer_size), 0);
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if (timeout != 0) {
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sleep(timeout);
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}
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j += buffer_size;
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}
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//usleep(1000);
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}
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return 0;
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} |