| 1 |
james |
88 |
/** |
| 2 |
|
|
* Measure data transferred by a process. |
| 3 |
|
|
* |
| 4 |
|
|
* Used with LD_PRELOAD. |
| 5 |
|
|
*/ |
| 6 |
|
|
|
| 7 |
|
|
#define _GNU_SOURCE |
| 8 |
|
|
#include <dlfcn.h> |
| 9 |
|
|
#include <stdbool.h> |
| 10 |
|
|
#include <stdio.h> |
| 11 |
|
|
#include <stdlib.h> |
| 12 |
|
|
#include <time.h> |
| 13 |
|
|
#include <unistd.h> |
| 14 |
|
|
#include <sys/types.h> |
| 15 |
|
|
#include <sys/socket.h> |
| 16 |
|
|
#include <sys/stat.h> |
| 17 |
|
|
|
| 18 |
|
|
static unsigned long long total_sent = 0; |
| 19 |
|
|
static unsigned long long total_recv = 0; |
| 20 |
|
|
static time_t start_time; |
| 21 |
|
|
|
| 22 |
|
|
static void transfcount_init(void); |
| 23 |
|
|
static void transfcount_atexit(void); |
| 24 |
|
|
static void transfcount_print_bytes(unsigned long long n); |
| 25 |
|
|
|
| 26 |
|
|
typedef ssize_t (*send_type)(int sockfd, const void *buf, size_t len, |
| 27 |
|
|
int flags); |
| 28 |
|
|
typedef int (*sendmmsg_type)(int sockfd, struct mmsghdr *msgvec, |
| 29 |
|
|
unsigned int vlen, int flags); |
| 30 |
|
|
typedef ssize_t (*recv_type)(int sockfd, void *buf, size_t len, int flags); |
| 31 |
|
|
typedef ssize_t (*read_type)(int fd, void *buf, size_t count); |
| 32 |
|
|
typedef ssize_t (*write_type)(int fd, const void *buf, size_t count); |
| 33 |
|
|
|
| 34 |
|
|
static send_type orig_send; |
| 35 |
|
|
static sendmmsg_type orig_sendmmsg; |
| 36 |
|
|
static recv_type orig_recv; |
| 37 |
|
|
static read_type orig_read; |
| 38 |
|
|
static write_type orig_write; |
| 39 |
|
|
|
| 40 |
|
|
|
| 41 |
|
|
/** |
| 42 |
|
|
* send - send a message on a socket. |
| 43 |
|
|
*/ |
| 44 |
|
|
ssize_t send(int sockfd, const void *buf, size_t len, int flags) |
| 45 |
|
|
{ |
| 46 |
|
|
ssize_t bytes; |
| 47 |
|
|
|
| 48 |
|
|
transfcount_init(); |
| 49 |
|
|
|
| 50 |
|
|
/*printf("######## send(sockfd=%i, buf=%p, len=%zi, flags=%x) -> ", |
| 51 |
|
|
sockfd, buf, len, flags);*/ |
| 52 |
|
|
|
| 53 |
|
|
bytes = orig_send(sockfd, buf, len, flags); |
| 54 |
|
|
total_sent += bytes; |
| 55 |
|
|
/*printf("%lu\n", bytes);*/ |
| 56 |
|
|
|
| 57 |
|
|
return bytes; |
| 58 |
|
|
} |
| 59 |
|
|
|
| 60 |
|
|
|
| 61 |
|
|
/** |
| 62 |
|
|
* sendmmsg - send multiple messages on a socket. |
| 63 |
|
|
*/ |
| 64 |
|
|
int sendmmsg(int sockfd, struct mmsghdr *msgvec, unsigned int vlen, |
| 65 |
|
|
int flags) |
| 66 |
|
|
{ |
| 67 |
|
|
int sent, i; |
| 68 |
|
|
|
| 69 |
|
|
transfcount_init(); |
| 70 |
|
|
|
| 71 |
|
|
/*printf("######## sendmmsg(sockfd=%i, msgvec=%p, vlen=%u, flags=%x) -> ", |
| 72 |
|
|
sockfd, msgvec, vlen, flags);*/ |
| 73 |
|
|
|
| 74 |
|
|
sent = orig_sendmmsg(sockfd, msgvec, vlen, flags); |
| 75 |
|
|
/*printf("%i\n", sent);*/ |
| 76 |
|
|
for (i = 0; i < sent; i++) |
| 77 |
|
|
total_sent += msgvec[i].msg_len; |
| 78 |
|
|
|
| 79 |
|
|
return sent; |
| 80 |
|
|
} |
| 81 |
|
|
|
| 82 |
|
|
|
| 83 |
|
|
/** |
| 84 |
|
|
* recv - receive a message from a socket. |
| 85 |
|
|
*/ |
| 86 |
|
|
ssize_t recv(int sockfd, void *buf, size_t len, int flags) |
| 87 |
|
|
{ |
| 88 |
|
|
ssize_t bytes; |
| 89 |
|
|
|
| 90 |
|
|
transfcount_init(); |
| 91 |
|
|
|
| 92 |
|
|
/*printf("######## recv(sockfd=%i, buf=%p, len=%zi, flags=%x) -> ", |
| 93 |
|
|
sockfd, buf, len, flags);*/ |
| 94 |
|
|
|
| 95 |
|
|
bytes = orig_recv(sockfd, buf, len, flags); |
| 96 |
|
|
total_recv += bytes; |
| 97 |
|
|
/*printf("%lu\n", bytes);*/ |
| 98 |
|
|
|
| 99 |
|
|
return bytes; |
| 100 |
|
|
} |
| 101 |
|
|
|
| 102 |
|
|
|
| 103 |
|
|
/** |
| 104 |
|
|
* read - read from a file descriptor. |
| 105 |
|
|
*/ |
| 106 |
|
|
ssize_t read(int fd, void *buf, size_t count) |
| 107 |
|
|
{ |
| 108 |
|
|
struct stat statbuf; |
| 109 |
|
|
ssize_t bytes; |
| 110 |
|
|
|
| 111 |
|
|
transfcount_init(); |
| 112 |
|
|
|
| 113 |
|
|
fstat(fd, &statbuf); |
| 114 |
|
|
if (!S_ISSOCK(statbuf.st_mode)) |
| 115 |
|
|
return orig_read(fd, buf, count); |
| 116 |
|
|
|
| 117 |
|
|
/*printf("######## read(fd=%i, buf=%p, count=%zi) -> ", |
| 118 |
|
|
fd, buf, count);*/ |
| 119 |
|
|
|
| 120 |
|
|
bytes = orig_read(fd, buf, count); |
| 121 |
|
|
if (bytes != -1) |
| 122 |
|
|
total_recv += bytes; |
| 123 |
|
|
/*printf("%lu\n", bytes);*/ |
| 124 |
|
|
|
| 125 |
|
|
return bytes; |
| 126 |
|
|
} |
| 127 |
|
|
|
| 128 |
|
|
|
| 129 |
|
|
/** |
| 130 |
|
|
* write - write to a file descriptor. |
| 131 |
|
|
*/ |
| 132 |
|
|
ssize_t write(int fd, const void *buf, size_t count) |
| 133 |
|
|
{ |
| 134 |
|
|
struct stat statbuf; |
| 135 |
|
|
ssize_t bytes; |
| 136 |
|
|
|
| 137 |
|
|
transfcount_init(); |
| 138 |
|
|
|
| 139 |
|
|
fstat(fd, &statbuf); |
| 140 |
|
|
if (!S_ISSOCK(statbuf.st_mode)) |
| 141 |
|
|
return orig_write(fd, buf, count); |
| 142 |
|
|
|
| 143 |
|
|
/*printf("######## write(fd=%i, buf=%p, count=%zi) -> ", |
| 144 |
|
|
fd, buf, count);*/ |
| 145 |
|
|
|
| 146 |
|
|
bytes = orig_write(fd, buf, count); |
| 147 |
|
|
if (bytes != -1) |
| 148 |
|
|
total_sent += bytes; |
| 149 |
|
|
/*printf("%lu\n", bytes);*/ |
| 150 |
|
|
|
| 151 |
|
|
return bytes; |
| 152 |
|
|
} |
| 153 |
|
|
|
| 154 |
|
|
|
| 155 |
|
|
/** |
| 156 |
|
|
* Set up library. |
| 157 |
|
|
*/ |
| 158 |
|
|
void transfcount_init(void) |
| 159 |
|
|
{ |
| 160 |
|
|
static bool init_done = false; |
| 161 |
|
|
|
| 162 |
|
|
if (init_done) |
| 163 |
|
|
return; |
| 164 |
|
|
|
| 165 |
|
|
orig_send = (send_type)dlsym(RTLD_NEXT, "send"); |
| 166 |
|
|
orig_sendmmsg = (sendmmsg_type)dlsym(RTLD_NEXT, "sendmmsg"); |
| 167 |
|
|
orig_recv = (recv_type)dlsym(RTLD_NEXT, "recv"); |
| 168 |
|
|
orig_read = (read_type)dlsym(RTLD_NEXT, "read"); |
| 169 |
|
|
orig_write = (write_type)dlsym(RTLD_NEXT, "write"); |
| 170 |
|
|
|
| 171 |
|
|
atexit(transfcount_atexit); |
| 172 |
|
|
|
| 173 |
|
|
start_time = time(NULL); |
| 174 |
|
|
|
| 175 |
|
|
init_done = true; |
| 176 |
|
|
} |
| 177 |
|
|
|
| 178 |
|
|
|
| 179 |
|
|
/** |
| 180 |
|
|
* Output transfer statistics. |
| 181 |
|
|
*/ |
| 182 |
|
|
void transfcount_atexit(void) |
| 183 |
|
|
{ |
| 184 |
|
|
time_t end_time = time(NULL); |
| 185 |
|
|
time_t duration = end_time - start_time; |
| 186 |
|
|
|
| 187 |
|
|
if (total_sent == 0 && total_recv == 0) |
| 188 |
|
|
return; |
| 189 |
|
|
|
| 190 |
|
|
if (duration == 0) |
| 191 |
|
|
duration = 1; |
| 192 |
|
|
|
| 193 |
|
|
fprintf(stderr, "[>>> Sent "); |
| 194 |
|
|
transfcount_print_bytes(total_sent); |
| 195 |
|
|
fprintf(stderr, "B ("); |
| 196 |
|
|
transfcount_print_bytes(total_sent / duration); |
| 197 |
|
|
fprintf(stderr, "B/s) >>>] [<<< Received "); |
| 198 |
|
|
transfcount_print_bytes(total_recv); |
| 199 |
|
|
fprintf(stderr, "B ("); |
| 200 |
|
|
transfcount_print_bytes(total_recv / duration); |
| 201 |
|
|
fprintf(stderr, "B/s) <<<]\n"); |
| 202 |
|
|
} |
| 203 |
|
|
|
| 204 |
|
|
|
| 205 |
|
|
/** |
| 206 |
|
|
* Print a size as human readable. |
| 207 |
|
|
*/ |
| 208 |
|
|
void transfcount_print_bytes(unsigned long long n) |
| 209 |
|
|
{ |
| 210 |
|
|
if (1024 * 1024 * 1024 <= n) { |
| 211 |
|
|
fprintf(stderr, "%.1fGi", (double) n / 1024 / 1024 / 1024); |
| 212 |
|
|
} else if (1024 * 1024 <= n) { |
| 213 |
|
|
fprintf(stderr, "%.1fMi", (double) n / 1024 / 1024); |
| 214 |
|
|
} else if (1024 <= n) { |
| 215 |
|
|
fprintf(stderr, "%.1fKi", (double) n / 1024); |
| 216 |
|
|
} else { |
| 217 |
|
|
fprintf(stderr, "%llu", n); |
| 218 |
|
|
} |
| 219 |
|
|
} |
| 220 |
|
|
|
Parent Directory
| 
Revision Log