remove C implementation

src/emper-echo-server.c

-// SPDX-License-Identifier: GPL-3.0-or-later
-// Copyright © 2020 Florian Fischer
-/* #include <assert.h> */
-#include <errno.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include "config.h"
-#define EMPER_ASYNC_LIB
-#define EMPER_ASYNC_NETWORK
-#include "emper.h"
-
-#define unlikely(x) __builtin_expect(!!(x), 1)
-
-static int port = 12345;
-
-_Noreturn static void die(const char* msg) {
-	perror(msg);
-	exit(EXIT_FAILURE);
-}
-
-#define BUF_MAX 4096
-void client_func(void* arg) {
-	int client_fd = *(int*)arg;
-	free(arg);
-
-	char buf[BUF_MAX];
-	for (;;) {
-#ifdef USE_ASYNC_IO
-		ssize_t bytes_recv = emper_recv(client_fd, (void*)&buf, BUF_MAX, MSG_WAITALL);
-#else
-		ssize_t bytes_recv = recv(client_fd, (void*)&buf, BUF_MAX, MSG_WAITALL);
-#endif
-		// socket was shutdown
-		if (unlikely(bytes_recv == 0)) {
-			return;
-		}
-
-		if (unlikely(bytes_recv == -1)) {
-			perror("recv failed");
-			if (errno != EINTR) {
-				return;
-			}
-		}
-
-		ssize_t bytes_send = 0;
-		while (bytes_send < bytes_recv) {
-#ifdef USE_ASYNC_IO
-			ssize_t new_bytes_send = emper_send(client_fd, buf, bytes_recv - bytes_send, MSG_NOSIGNAL);
-#else
-			ssize_t new_bytes_send = send(client_fd, buf, bytes_recv - bytes_send, MSG_NOSIGNAL);
-#endif
-			// socket was shutdown
-			if (unlikely(new_bytes_send == 0)) {
-				return;
-			}
-
-			if (unlikely(bytes_send == -1)) {
-				if (errno != EINTR) {
-					perror("recv failed");
-					return;
-				}
-			}
-
-			bytes_send += new_bytes_send;
-		}
-	}
-}
-
-#define BACKLOG 5
-static void welcome_func() {
-	int sockfd = socket(AF_INET, SOCK_STREAM, 0);
-	if (sockfd == -1) {
-		die("socket failed");
-	}
-
-	struct sockaddr_in servaddr;
-	memset(&servaddr, 0, sizeof(servaddr));	 // NOLINT
-
-	// assign IP, PORT
-	servaddr.sin_family = AF_INET;
-	servaddr.sin_addr.s_addr = INADDR_ANY;
-	servaddr.sin_port = htons(port);
-
-	int reuseaddr = 1;
-	if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, sizeof(reuseaddr)) == -1) {
-		die("setsockopt failed");
-	}
-
-	if (bind(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr)) == -1) {
-		die("bind failed");
-	}
-
-	if (listen(sockfd, BACKLOG) != 0) {
-		die("listen failed");
-	}
-
-	for (;;) {
-#ifdef USE_ASYNC_IO
-		int client_fd = emper_accept(sockfd, NULL, NULL);
-#else
-		socklen_t address_len = sizeof(servaddr);
-		int client_fd = accept(sockfd, (struct sockaddr*)&servaddr, &address_len);
-#endif
-		if (unlikely(client_fd < 0)) {
-			perror("accept failed");
-		}
-
-		int* passable_fd = malloc(sizeof(int));
-		if (unlikely(!passable_fd)) {
-			die("allocating passable fd failed");
-		}
-
-		*passable_fd = client_fd;
-		fiber* client_fiber = fiber_from(client_func, (void*)passable_fd);
-		schedule(client_fiber);
-	}
-}
-
-int main(int argc, char* argv[]) {
-	if (argc > 1) {
-		const int decimal = 10;
-		port = (int)strtol(argv[1], NULL, decimal);
-	}
-
-	init_runtime();
-
-	fiber* welcome_fiber = fiber_from0(welcome_func);
-	schedule(welcome_fiber);
-
-	wait_until_runtime_finished();
-}

src/meson.build

@@ -10,11 +10,3 @@ cpp_exe = executable('emper-echo-server',
 					 'emper-echo-server.cpp',
 					 include_directories : [inc],
 					 dependencies: dependencies)
-
-emper_c = emper_proj.get_variable('emper_c')
-
-c_exe = executable('emper-echo-server-c',
-				 'emper-echo-server.c',
-				 include_directories : [inc],
-				 dependencies: dependencies,
-				 link_with: emper_c)