1 /* 2 * resource_track.c --- resource tracking 3 * 4 * Copyright (C) 2013 by Theodore Ts'o 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12 13 #include "resize2fs.h" 14 #include <time.h> 15 #ifdef HAVE_MALLOC_H 16 #include <malloc.h> 17 #endif 18 #include <sys/resource.h> 19 20 void init_resource_track(struct resource_track *track, const char *desc, 21 io_channel channel) 22 { 23 #ifdef HAVE_GETRUSAGE 24 struct rusage r; 25 #endif 26 io_stats io_start = 0; 27 28 track->desc = desc; 29 track->brk_start = sbrk(0); 30 gettimeofday(&track->time_start, 0); 31 #ifdef HAVE_GETRUSAGE 32 #ifdef sun 33 memset(&r, 0, sizeof(struct rusage)); 34 #endif 35 getrusage(RUSAGE_SELF, &r); 36 track->user_start = r.ru_utime; 37 track->system_start = r.ru_stime; 38 #else 39 track->user_start.tv_sec = track->user_start.tv_usec = 0; 40 track->system_start.tv_sec = track->system_start.tv_usec = 0; 41 #endif 42 track->bytes_read = 0; 43 track->bytes_written = 0; 44 if (channel && channel->manager && channel->manager->get_stats) 45 channel->manager->get_stats(channel, &io_start); 46 if (io_start) { 47 track->bytes_read = io_start->bytes_read; 48 track->bytes_written = io_start->bytes_written; 49 } 50 } 51 52 static float timeval_subtract(struct timeval *tv1, 53 struct timeval *tv2) 54 { 55 return ((tv1->tv_sec - tv2->tv_sec) + 56 ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000); 57 } 58 59 void print_resource_track(ext2_resize_t rfs, struct resource_track *track, 60 io_channel channel) 61 { 62 #ifdef HAVE_GETRUSAGE 63 struct rusage r; 64 #endif 65 #ifdef HAVE_MALLINFO 66 struct mallinfo malloc_info; 67 #endif 68 struct timeval time_end; 69 70 if ((rfs->flags & RESIZE_DEBUG_RTRACK) == 0) 71 return; 72 73 gettimeofday(&time_end, 0); 74 75 if (track->desc) 76 printf("%s: ", track->desc); 77 78 #ifdef HAVE_MALLINFO 79 #define kbytes(x) (((unsigned long)(x) + 1023) / 1024) 80 81 malloc_info = mallinfo(); 82 printf("Memory used: %luk/%luk (%luk/%luk), ", 83 kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd), 84 kbytes(malloc_info.uordblks), kbytes(malloc_info.fordblks)); 85 #else 86 printf("Memory used: %lu, ", 87 (unsigned long) (((char *) sbrk(0)) - 88 ((char *) track->brk_start))); 89 #endif 90 #ifdef HAVE_GETRUSAGE 91 getrusage(RUSAGE_SELF, &r); 92 93 printf("time: %5.2f/%5.2f/%5.2f\n", 94 timeval_subtract(&time_end, &track->time_start), 95 timeval_subtract(&r.ru_utime, &track->user_start), 96 timeval_subtract(&r.ru_stime, &track->system_start)); 97 #else 98 printf("elapsed time: %6.3f\n", 99 timeval_subtract(&time_end, &track->time_start)); 100 #endif 101 #define mbytes(x) (((x) + 1048575) / 1048576) 102 if (channel && channel->manager && channel->manager->get_stats) { 103 io_stats delta = 0; 104 unsigned long long bytes_read = 0; 105 unsigned long long bytes_written = 0; 106 107 channel->manager->get_stats(channel, &delta); 108 if (delta) { 109 bytes_read = delta->bytes_read - track->bytes_read; 110 bytes_written = delta->bytes_written - 111 track->bytes_written; 112 if (bytes_read == 0 && bytes_written == 0) 113 goto skip_io; 114 if (track->desc) 115 printf("%s: ", track->desc); 116 printf("I/O read: %lluMB, write: %lluMB, " 117 "rate: %.2fMB/s\n", 118 mbytes(bytes_read), 119 mbytes(bytes_written), 120 (double)mbytes(bytes_read + bytes_written) / 121 timeval_subtract(&time_end, &track->time_start)); 122 } 123 } 124 skip_io: 125 fflush(stdout); 126 } 127 128
