1/** 2 * \file 3 * \brief Flounder stubs buffer 4 */ 5 6/* 7 * Copyright (c) 2007, 2008, 2009, 2010, ETH Zurich. 8 * All rights reserved. 9 * 10 * This file is distributed under the terms in the attached LICENSE file. 11 * If you do not find this file, copies can be found by writing to: 12 * ETH Zurich D-INFK, Universitaetstrasse 6, CH-8092 Zurich. Attn: Systems Group. 13 */ 14 15#include <stdio.h> 16#include <barrelfish/barrelfish.h> 17#include <string.h> 18#include <barrelfish/nameservice_client.h> 19#include <barrelfish/spawn_client.h> 20#include <bench/bench.h> 21#include <if/bench_defs.h> 22 23static char my_name[100]; 24static uint8_t buffer; 25 26static struct bench_binding *binding; 27static coreid_t my_core_id; 28 29#define MAX_COUNT 1000 30 31struct timestamp { 32 cycles_t time0; 33 cycles_t time1; 34}; 35static struct timestamp timestamps[MAX_COUNT]; 36 37static void experiment(void) 38{ 39 errval_t err; 40 static bool flag = false; 41 static int i = 0; 42 43 // Experiment finished 44 if (i == MAX_COUNT - 1) { 45 timestamps[i].time1 = bench_tsc(); 46 47 for (int j = MAX_COUNT / 10; j < MAX_COUNT; j++) { 48 printf("page %d took %"PRIuCYCLES"\n", j, 49 timestamps[j].time1 - bench_tscoverhead() - 50 timestamps[j].time0); 51 } 52 53 printf("client done\n"); 54 return; 55 } 56 57 if (!flag) { // Start experiment 58 timestamps[i].time0 = bench_tsc(); 59 flag = true; 60 } else { // Continue experiment 61 timestamps[i].time1 = bench_tsc(); 62 timestamps[i+1].time0 = timestamps[i].time1; 63 i++; 64 } 65 66 err = binding->tx_vtbl.fsb_buffer_request(binding, NOP_CONT, &buffer, 1); 67 assert(err_is_ok(err)); 68} 69 70static void fsb_init_msg(struct bench_binding *b, coreid_t id) 71{ 72 binding = b; 73 printf("Running flounder_stubs_buffer between core %d and core %d\n", my_core_id, 1); 74 experiment(); 75} 76 77static void fsb_buffer_reply(struct bench_binding *b, const uint8_t *payload, size_t size) 78{ 79 experiment(); 80} 81 82static void fsb_buffer_request(struct bench_binding *b, const uint8_t *payload, size_t size) 83{ 84 errval_t err; 85 err = b->tx_vtbl.fsb_buffer_reply(b, NOP_CONT, &buffer, 1); 86 assert(err_is_ok(err)); 87} 88 89static struct bench_rx_vtbl rx_vtbl = { 90 .fsb_init_msg = fsb_init_msg, 91 .fsb_buffer_request = fsb_buffer_request, 92 .fsb_buffer_reply = fsb_buffer_reply, 93}; 94 95static void bind_cb(void *st, errval_t binderr, struct bench_binding *b) 96{ 97 // copy my message receive handler vtable to the binding 98 b->rx_vtbl = rx_vtbl; 99 100 errval_t err; 101 err = b->tx_vtbl.fsb_init_msg(b, NOP_CONT, my_core_id); 102 assert(err_is_ok(err)); 103} 104 105static void export_cb(void *st, errval_t err, iref_t iref) 106{ 107 if (err_is_fail(err)) { 108 DEBUG_ERR(err, "export failed"); 109 abort(); 110 } 111 112 // register this iref with the name service 113 err = nameservice_register("fsb_server", iref); 114 if (err_is_fail(err)) { 115 DEBUG_ERR(err, "nameservice_register failed"); 116 abort(); 117 } 118} 119 120static errval_t connect_cb(void *st, struct bench_binding *b) 121{ 122 // copy my message receive handler vtable to the binding 123 b->rx_vtbl = rx_vtbl; 124 125 // accept the connection 126 return SYS_ERR_OK; 127} 128 129int main(int argc, char *argv[]) 130{ 131 errval_t err; 132 133 /* Set my core id */ 134 my_core_id = disp_get_core_id(); 135 strcpy(my_name, argv[0]); 136 137 bench_init(); 138 139 if (argc == 1) { /* bsp core */ 140 /* 141 1. spawn domain, 142 2. setup a server, 143 3. wait for client to connect, 144 4. run experiment 145 */ 146 char *xargv[] = {my_name, "dummy", NULL}; 147 err = spawn_program(1, my_name, xargv, NULL, 148 SPAWN_FLAGS_DEFAULT, NULL); 149 assert(err_is_ok(err)); 150 151 /* Setup a server */ 152 err = bench_export(NULL, export_cb, connect_cb, get_default_waitset(), 153 IDC_BIND_FLAGS_DEFAULT); 154 assert(err_is_ok(err)); 155 } else { 156 /* Connect to the server */ 157 iref_t iref; 158 159 err = nameservice_blocking_lookup("fsb_server", &iref); 160 if (err_is_fail(err)) { 161 DEBUG_ERR(err, "nameservice_blocking_lookup failed"); 162 abort(); 163 } 164 165 err = bench_bind(iref, bind_cb, NULL, 166 get_default_waitset(), IDC_BIND_FLAGS_DEFAULT); 167 if (err_is_fail(err)) { 168 DEBUG_ERR(err, "bind failed"); 169 abort(); 170 } 171 } 172 173 messages_handler_loop(); 174} 175