/* Copyright libuv contributors. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include "uv.h" #include "task.h" #include #include #include #define CHECK_HANDLE(handle) \ ASSERT((uv_udp_t*)(handle) == &recver || (uv_udp_t*)(handle) == &sender) #define BUFFER_MULTIPLIER 20 #define MAX_DGRAM_SIZE (64 * 1024) #define NUM_SENDS 40 #define EXPECTED_MMSG_ALLOCS (NUM_SENDS / BUFFER_MULTIPLIER) static uv_udp_t recver; static uv_udp_t sender; static int recv_cb_called; static int received_datagrams; static int close_cb_called; static int alloc_cb_called; static void alloc_cb(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf) { size_t buffer_size; CHECK_HANDLE(handle); /* Only allocate enough room for multiple dgrams if we can actually recv them */ buffer_size = MAX_DGRAM_SIZE; if (uv_udp_using_recvmmsg((uv_udp_t*)handle)) buffer_size *= BUFFER_MULTIPLIER; /* Actually malloc to exercise free'ing the buffer later */ buf->base = malloc(buffer_size); ASSERT_NOT_NULL(buf->base); buf->len = buffer_size; alloc_cb_called++; } static void close_cb(uv_handle_t* handle) { CHECK_HANDLE(handle); ASSERT(uv_is_closing(handle)); close_cb_called++; } static void recv_cb(uv_udp_t* handle, ssize_t nread, const uv_buf_t* rcvbuf, const struct sockaddr* addr, unsigned flags) { ASSERT_GE(nread, 0); /* free and return if this is a mmsg free-only callback invocation */ if (flags & UV_UDP_MMSG_FREE) { ASSERT_EQ(nread, 0); ASSERT_NULL(addr); free(rcvbuf->base); return; } if (nread == 0) { /* There can be no more available data for the time being. */ ASSERT_NULL(addr); } else { ASSERT_EQ(nread, 4); ASSERT_NOT_NULL(addr); ASSERT_MEM_EQ("PING", rcvbuf->base, nread); received_datagrams++; } recv_cb_called++; if (received_datagrams == NUM_SENDS) { uv_close((uv_handle_t*) handle, close_cb); uv_close((uv_handle_t*) &sender, close_cb); } /* Don't free if the buffer could be reused via mmsg */ if (rcvbuf && !(flags & UV_UDP_MMSG_CHUNK)) free(rcvbuf->base); } TEST_IMPL(udp_mmsg) { struct sockaddr_in addr; uv_buf_t buf; int i; ASSERT_EQ(0, uv_ip4_addr("0.0.0.0", TEST_PORT, &addr)); ASSERT_EQ(0, uv_udp_init_ex(uv_default_loop(), &recver, AF_UNSPEC | UV_UDP_RECVMMSG)); ASSERT_EQ(0, uv_udp_bind(&recver, (const struct sockaddr*) &addr, 0)); ASSERT_EQ(0, uv_udp_recv_start(&recver, alloc_cb, recv_cb)); ASSERT_EQ(0, uv_ip4_addr("127.0.0.1", TEST_PORT, &addr)); ASSERT_EQ(0, uv_udp_init(uv_default_loop(), &sender)); buf = uv_buf_init("PING", 4); for (i = 0; i < NUM_SENDS; i++) { ASSERT_EQ(4, uv_udp_try_send(&sender, &buf, 1, (const struct sockaddr*) &addr)); } ASSERT_EQ(0, uv_run(uv_default_loop(), UV_RUN_DEFAULT)); ASSERT_EQ(close_cb_called, 2); ASSERT_EQ(received_datagrams, NUM_SENDS); ASSERT_EQ(sender.send_queue_size, 0); ASSERT_EQ(recver.send_queue_size, 0); printf("%d allocs for %d recvs\n", alloc_cb_called, recv_cb_called); /* On platforms that don't support mmsg, each recv gets its own alloc */ if (uv_udp_using_recvmmsg(&recver)) ASSERT_EQ(alloc_cb_called, EXPECTED_MMSG_ALLOCS); else ASSERT_EQ(alloc_cb_called, recv_cb_called); MAKE_VALGRIND_HAPPY(); return 0; }