The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 1 | /** |
| 2 | * @file daemon/opd_mangling.c |
| 3 | * Mangling and opening of sample files |
| 4 | * |
| 5 | * @remark Copyright 2002 OProfile authors |
| 6 | * @remark Read the file COPYING |
| 7 | * |
| 8 | * @author John Levon |
| 9 | * @author Philippe Elie |
| 10 | */ |
| 11 | |
| 12 | #include <sys/types.h> |
| 13 | |
| 14 | #include "opd_mangling.h" |
| 15 | #include "opd_kernel.h" |
| 16 | #include "opd_cookie.h" |
| 17 | #include "opd_sfile.h" |
| 18 | #include "opd_anon.h" |
| 19 | #include "opd_printf.h" |
| 20 | #include "opd_events.h" |
| 21 | #include "oprofiled.h" |
| 22 | |
| 23 | #include "op_file.h" |
| 24 | #include "op_sample_file.h" |
| 25 | #include "op_config.h" |
| 26 | #include "op_mangle.h" |
| 27 | #include "op_events.h" |
| 28 | #include "op_libiberty.h" |
| 29 | |
| 30 | #include <limits.h> |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | #include <errno.h> |
| 35 | |
| 36 | |
| 37 | static char const * get_dep_name(struct sfile const * sf) |
| 38 | { |
| 39 | if (sf->anon) |
| 40 | return find_cookie(sf->app_cookie); |
| 41 | |
| 42 | /* avoid to call find_cookie(), caller can recover using image_name */ |
| 43 | if (sf->cookie == sf->app_cookie) |
| 44 | return NULL; |
| 45 | |
| 46 | if (!separate_kernel && !(separate_lib && !sf->kernel)) |
| 47 | return NULL; |
| 48 | |
| 49 | /* this will fail if e.g. kernel thread */ |
| 50 | if (sf->app_cookie == 0) |
| 51 | return NULL; |
| 52 | |
| 53 | return find_cookie(sf->app_cookie); |
| 54 | } |
| 55 | |
| 56 | |
| 57 | static char * mangle_anon(struct anon_mapping const * anon) |
| 58 | { |
| 59 | char * name = xmalloc(PATH_MAX); |
| 60 | |
| 61 | snprintf(name, 1024, "%u.0x%llx.0x%llx", (unsigned int)anon->tgid, |
| 62 | anon->start, anon->end); |
| 63 | |
| 64 | return name; |
| 65 | } |
| 66 | |
| 67 | |
| 68 | static char * |
| 69 | mangle_filename(struct sfile * last, struct sfile const * sf, int counter, int cg) |
| 70 | { |
| 71 | char * mangled; |
| 72 | struct mangle_values values; |
| 73 | struct opd_event * event = find_counter_event(counter); |
| 74 | |
| 75 | values.flags = 0; |
| 76 | |
| 77 | if (sf->kernel) { |
| 78 | values.image_name = sf->kernel->name; |
| 79 | values.flags |= MANGLE_KERNEL; |
| 80 | } else if (sf->anon) { |
| 81 | values.flags |= MANGLE_ANON; |
| 82 | values.image_name = mangle_anon(sf->anon); |
| 83 | values.anon_name = sf->anon->name; |
| 84 | } else { |
| 85 | values.image_name = find_cookie(sf->cookie); |
| 86 | } |
| 87 | |
| 88 | values.dep_name = get_dep_name(sf); |
| 89 | if (!values.dep_name) |
| 90 | values.dep_name = values.image_name; |
| 91 | |
| 92 | /* FIXME: log */ |
| 93 | if (!values.image_name || !values.dep_name) |
| 94 | return NULL; |
| 95 | |
| 96 | if (separate_thread) { |
| 97 | values.flags |= MANGLE_TGID | MANGLE_TID; |
| 98 | values.tid = sf->tid; |
| 99 | values.tgid = sf->tgid; |
| 100 | } |
| 101 | |
| 102 | if (separate_cpu) { |
| 103 | values.flags |= MANGLE_CPU; |
| 104 | values.cpu = sf->cpu; |
| 105 | } |
| 106 | |
| 107 | if (cg) { |
| 108 | values.flags |= MANGLE_CALLGRAPH; |
| 109 | if (last->kernel) { |
| 110 | values.cg_image_name = last->kernel->name; |
| 111 | } else if (last->anon) { |
| 112 | values.flags |= MANGLE_CG_ANON; |
| 113 | values.cg_image_name = mangle_anon(last->anon); |
| 114 | values.anon_name = last->anon->name; |
| 115 | } else { |
| 116 | values.cg_image_name = find_cookie(last->cookie); |
| 117 | } |
| 118 | |
| 119 | /* FIXME: log */ |
| 120 | if (!values.cg_image_name) { |
| 121 | if (values.flags & MANGLE_ANON) |
| 122 | free((char *)values.image_name); |
| 123 | return NULL; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | values.event_name = event->name; |
| 128 | values.count = event->count; |
| 129 | values.unit_mask = event->um; |
| 130 | |
| 131 | mangled = op_mangle_filename(&values); |
| 132 | |
| 133 | if (values.flags & MANGLE_ANON) |
| 134 | free((char *)values.image_name); |
| 135 | if (values.flags & MANGLE_CG_ANON) |
| 136 | free((char *)values.cg_image_name); |
| 137 | return mangled; |
| 138 | } |
| 139 | |
| 140 | |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 141 | int opd_open_sample_file(odb_t *file, struct sfile *last, |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 142 | struct sfile * sf, int counter, int cg) |
| 143 | { |
| 144 | char * mangled; |
| 145 | char const * binary; |
| 146 | int spu_profile = 0; |
| 147 | vma_t last_start = 0; |
| 148 | int err; |
| 149 | |
| 150 | mangled = mangle_filename(last, sf, counter, cg); |
| 151 | |
| 152 | if (!mangled) |
| 153 | return EINVAL; |
| 154 | |
| 155 | verbprintf(vsfile, "Opening \"%s\"\n", mangled); |
| 156 | |
| 157 | create_path(mangled); |
| 158 | |
| 159 | /* locking sf will lock associated cg files too */ |
| 160 | sfile_get(sf); |
| 161 | if (sf != last) |
| 162 | sfile_get(last); |
| 163 | |
| 164 | retry: |
| 165 | err = odb_open(file, mangled, ODB_RDWR, sizeof(struct opd_header)); |
| 166 | |
| 167 | /* This can naturally happen when racing against opcontrol --reset. */ |
| 168 | if (err) { |
| 169 | if (err == EMFILE) { |
| 170 | if (sfile_lru_clear()) { |
| 171 | printf("LRU cleared but odb_open() fails for %s.\n", mangled); |
| 172 | abort(); |
| 173 | } |
| 174 | goto retry; |
| 175 | } |
| 176 | |
| 177 | fprintf(stderr, "oprofiled: open of %s failed: %s\n", |
| 178 | mangled, strerror(err)); |
| 179 | goto out; |
| 180 | } |
| 181 | |
| 182 | if (!sf->kernel) |
| 183 | binary = find_cookie(sf->cookie); |
| 184 | else |
| 185 | binary = sf->kernel->name; |
| 186 | |
| 187 | if (last && last->anon) |
| 188 | last_start = last->anon->start; |
| 189 | |
| 190 | if (sf->embedded_offset != UNUSED_EMBEDDED_OFFSET) |
| 191 | spu_profile = 1; |
| 192 | |
| 193 | fill_header(odb_get_data(file), counter, |
| 194 | sf->anon ? sf->anon->start : 0, last_start, |
| 195 | !!sf->kernel, last ? !!last->kernel : 0, |
| 196 | spu_profile, sf->embedded_offset, |
| 197 | binary ? op_get_mtime(binary) : 0); |
| 198 | |
| 199 | out: |
| 200 | sfile_put(sf); |
| 201 | if (sf != last) |
| 202 | sfile_put(last); |
| 203 | free(mangled); |
| 204 | return err; |
| 205 | } |