| 1 | /* |
| 2 | * Copyright (C) 2011 Mathieu Bain <mathieu.bain@polymtl.ca> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License Version 2 as |
| 6 | * published by the Free Software Foundation; |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 16 | * MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <babeltrace/babeltrace.h> |
| 20 | |
| 21 | #include "lttngtoptypes.h" |
| 22 | #include "common.h" |
| 23 | #include "iostreamtop.h" |
| 24 | |
| 25 | #include <stdlib.h> |
| 26 | |
| 27 | int update_iostream_ret(struct lttngtop *ctx, int tid, char *comm, |
| 28 | unsigned long timestamp, int cpu_id, int ret) |
| 29 | { |
| 30 | struct processtop *tmp; |
| 31 | int err = 0; |
| 32 | |
| 33 | tmp = get_proc(ctx, tid, comm, timestamp); |
| 34 | if ((tmp->iostream->syscall_info != NULL) && (tmp->iostream->syscall_info->cpu_id == cpu_id)) { |
| 35 | if (tmp->iostream->syscall_info->type == __NR_read && ret > 0) { |
| 36 | tmp->iostream->ret_read += ret; |
| 37 | tmp->iostream->ret_total += ret; |
| 38 | } else if(tmp->iostream->syscall_info->type == __NR_write && ret > 0) { |
| 39 | tmp->iostream->ret_write += ret; |
| 40 | tmp->iostream->ret_total += ret; |
| 41 | } else{ |
| 42 | err = -1; |
| 43 | } |
| 44 | free(tmp->iostream->syscall_info); |
| 45 | tmp->iostream->syscall_info = NULL; |
| 46 | } |
| 47 | |
| 48 | return err; |
| 49 | } |
| 50 | |
| 51 | enum bt_cb_ret handle_exit_syscall(struct bt_ctf_event *call_data, |
| 52 | void *private_data) |
| 53 | { |
| 54 | struct definition *scope; |
| 55 | unsigned long timestamp; |
| 56 | char *comm; |
| 57 | uint64_t ret, tid; |
| 58 | int64_t cpu_id; |
| 59 | |
| 60 | timestamp = bt_ctf_get_timestamp(call_data); |
| 61 | if (timestamp == -1ULL) |
| 62 | goto error; |
| 63 | |
| 64 | scope = bt_ctf_get_top_level_scope(call_data, |
| 65 | BT_STREAM_EVENT_CONTEXT); |
| 66 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, |
| 67 | scope, "_procname")); |
| 68 | if (bt_ctf_field_get_error()) { |
| 69 | fprintf(stderr, "Missing procname context info\n"); |
| 70 | goto error; |
| 71 | } |
| 72 | |
| 73 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 74 | scope, "_tid")); |
| 75 | if (bt_ctf_field_get_error()) { |
| 76 | fprintf(stderr, "Missing tid context info\n"); |
| 77 | goto error; |
| 78 | } |
| 79 | |
| 80 | scope = bt_ctf_get_top_level_scope(call_data, |
| 81 | BT_EVENT_FIELDS); |
| 82 | ret = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 83 | scope, "_ret")); |
| 84 | if (bt_ctf_field_get_error()) { |
| 85 | fprintf(stderr, "Missing ret context info\n"); |
| 86 | goto error; |
| 87 | } |
| 88 | |
| 89 | scope = bt_ctf_get_top_level_scope(call_data, |
| 90 | BT_STREAM_PACKET_CONTEXT); |
| 91 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 92 | scope, "cpu_id")); |
| 93 | if (bt_ctf_field_get_error()) { |
| 94 | fprintf(stderr, "Missing cpu_id context info\n"); |
| 95 | goto error; |
| 96 | } |
| 97 | |
| 98 | /* |
| 99 | * if we encounter an exit_syscall and it is not for a syscall read or write |
| 100 | * we just abort the execution of this callback |
| 101 | */ |
| 102 | if ((update_iostream_ret(<tngtop, tid, comm, timestamp, cpu_id, ret)) < 0) |
| 103 | return BT_CB_ERROR_CONTINUE; |
| 104 | |
| 105 | return BT_CB_OK; |
| 106 | |
| 107 | error: |
| 108 | return BT_CB_ERROR_STOP; |
| 109 | } |
| 110 | |
| 111 | |
| 112 | enum bt_cb_ret handle_sys_write(struct bt_ctf_event *call_data, |
| 113 | void *private_data) |
| 114 | { |
| 115 | struct definition *scope; |
| 116 | struct processtop *tmp; |
| 117 | struct syscalls *syscall_info; |
| 118 | unsigned long timestamp; |
| 119 | uint64_t cpu_id; |
| 120 | char *comm; |
| 121 | int64_t tid; |
| 122 | |
| 123 | timestamp = bt_ctf_get_timestamp(call_data); |
| 124 | if (timestamp == -1ULL) |
| 125 | goto error; |
| 126 | |
| 127 | scope = bt_ctf_get_top_level_scope(call_data, |
| 128 | BT_STREAM_EVENT_CONTEXT); |
| 129 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, |
| 130 | scope, "_procname")); |
| 131 | if (bt_ctf_field_get_error()) { |
| 132 | fprintf(stderr, "Missing procname context info\n"); |
| 133 | goto error; |
| 134 | } |
| 135 | |
| 136 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 137 | scope, "_tid")); |
| 138 | if (bt_ctf_field_get_error()) { |
| 139 | fprintf(stderr, "Missing tid context info\n"); |
| 140 | goto error; |
| 141 | } |
| 142 | |
| 143 | scope = bt_ctf_get_top_level_scope(call_data, |
| 144 | BT_STREAM_PACKET_CONTEXT); |
| 145 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 146 | scope, "cpu_id")); |
| 147 | if (bt_ctf_field_get_error()) { |
| 148 | fprintf(stderr, "Missing cpu_id context info\n"); |
| 149 | goto error; |
| 150 | } |
| 151 | |
| 152 | syscall_info = malloc(sizeof(struct syscalls)); |
| 153 | syscall_info->cpu_id = cpu_id; |
| 154 | syscall_info->type = __NR_write; |
| 155 | syscall_info->tid = tid; |
| 156 | tmp = get_proc(<tngtop, tid, comm, timestamp); |
| 157 | tmp->iostream->syscall_info = syscall_info; |
| 158 | |
| 159 | return BT_CB_OK; |
| 160 | |
| 161 | error: |
| 162 | return BT_CB_ERROR_STOP; |
| 163 | } |
| 164 | |
| 165 | enum bt_cb_ret handle_sys_read(struct bt_ctf_event *call_data, |
| 166 | void *private_data) |
| 167 | { |
| 168 | struct processtop *tmp; |
| 169 | struct definition *scope; |
| 170 | struct syscalls * syscall_info; |
| 171 | unsigned long timestamp; |
| 172 | uint64_t cpu_id; |
| 173 | char *comm; |
| 174 | int64_t tid; |
| 175 | |
| 176 | timestamp = bt_ctf_get_timestamp(call_data); |
| 177 | if (timestamp == -1ULL) |
| 178 | goto error; |
| 179 | |
| 180 | scope = bt_ctf_get_top_level_scope(call_data, |
| 181 | BT_STREAM_EVENT_CONTEXT); |
| 182 | comm = bt_ctf_get_char_array(bt_ctf_get_field(call_data, |
| 183 | scope, "_procname")); |
| 184 | if (bt_ctf_field_get_error()) { |
| 185 | fprintf(stderr, "Missing procname context info\n"); |
| 186 | goto error; |
| 187 | } |
| 188 | |
| 189 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 190 | scope, "_tid")); |
| 191 | if (bt_ctf_field_get_error()) { |
| 192 | fprintf(stderr, "Missing tid context info\n"); |
| 193 | goto error; |
| 194 | } |
| 195 | |
| 196 | scope = bt_ctf_get_top_level_scope(call_data, |
| 197 | BT_STREAM_PACKET_CONTEXT); |
| 198 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 199 | scope, "cpu_id")); |
| 200 | if (bt_ctf_field_get_error()) { |
| 201 | fprintf(stderr, "Missing cpu_id context info\n"); |
| 202 | goto error; |
| 203 | } |
| 204 | |
| 205 | syscall_info = malloc(sizeof(struct syscalls)); |
| 206 | syscall_info->cpu_id = cpu_id; |
| 207 | syscall_info->type = __NR_read; |
| 208 | syscall_info->tid = tid; |
| 209 | tmp = get_proc(<tngtop, tid, comm, timestamp); |
| 210 | tmp->iostream->syscall_info = syscall_info; |
| 211 | |
| 212 | return BT_CB_OK; |
| 213 | |
| 214 | error: |
| 215 | return BT_CB_ERROR_STOP; |
| 216 | } |
| 217 | |