The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame^] | 1 | /** |
| 2 | * @file daemon/opd_stats.c |
| 3 | * Management of daemon statistics |
| 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 "opd_stats.h" |
| 13 | #include "oprofiled.h" |
| 14 | |
| 15 | #include "op_get_time.h" |
| 16 | |
| 17 | #include <dirent.h> |
| 18 | #include <stdlib.h> |
| 19 | #include <stdio.h> |
| 20 | |
| 21 | unsigned long opd_stats[OPD_MAX_STATS]; |
| 22 | |
| 23 | /** |
| 24 | * print_if - print an integer value read from file filename, |
| 25 | * do nothing if the value read == -1 except if force is non-zero |
| 26 | */ |
| 27 | static void print_if(char const * fmt, char const * path, char const * filename, int force) |
| 28 | { |
| 29 | int value = opd_read_fs_int(path, filename, 0); |
| 30 | if (value != -1 || force) |
| 31 | printf(fmt, value); |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * opd_print_stats - print out latest statistics |
| 36 | */ |
| 37 | void opd_print_stats(void) |
| 38 | { |
| 39 | DIR * dir; |
| 40 | struct dirent * dirent; |
| 41 | |
| 42 | printf("\n%s\n", op_get_time()); |
| 43 | printf("Nr. sample dumps: %lu\n", opd_stats[OPD_DUMP_COUNT]); |
| 44 | printf("Nr. non-backtrace samples: %lu\n", opd_stats[OPD_SAMPLES]); |
| 45 | printf("Nr. kernel samples: %lu\n", opd_stats[OPD_KERNEL]); |
| 46 | printf("Nr. lost samples (no kernel/user): %lu\n", opd_stats[OPD_NO_CTX]); |
| 47 | printf("Nr. lost kernel samples: %lu\n", opd_stats[OPD_LOST_KERNEL]); |
| 48 | printf("Nr. incomplete code structs: %lu\n", opd_stats[OPD_DANGLING_CODE]); |
| 49 | printf("Nr. samples lost due to sample file open failure: %lu\n", |
| 50 | opd_stats[OPD_LOST_SAMPLEFILE]); |
| 51 | printf("Nr. samples lost due to no permanent mapping: %lu\n", |
| 52 | opd_stats[OPD_LOST_NO_MAPPING]); |
| 53 | print_if("Nr. event lost due to buffer overflow: %u\n", |
| 54 | "/dev/oprofile/stats", "event_lost_overflow", 1); |
| 55 | print_if("Nr. samples lost due to no mapping: %u\n", |
| 56 | "/dev/oprofile/stats", "sample_lost_no_mapping", 1); |
| 57 | print_if("Nr. backtraces skipped due to no file mapping: %u\n", |
| 58 | "/dev/oprofile/stats", "bt_lost_no_mapping", 0); |
| 59 | print_if("Nr. samples lost due to no mm: %u\n", |
| 60 | "/dev/oprofile/stats", "sample_lost_no_mm", 1); |
| 61 | |
| 62 | if (!(dir = opendir("/dev/oprofile/stats/"))) |
| 63 | goto out; |
| 64 | while ((dirent = readdir(dir))) { |
| 65 | int cpu_nr; |
| 66 | char path[256]; |
| 67 | if (sscanf(dirent->d_name, "cpu%d", &cpu_nr) != 1) |
| 68 | continue; |
| 69 | snprintf(path, 256, "/dev/oprofile/stats/%s", dirent->d_name); |
| 70 | |
| 71 | print_if("Nr. samples lost cpu buffer overflow: %u\n", |
| 72 | path, "sample_lost_overflow", 1); |
| 73 | print_if("Nr. samples lost task exit: %u\n", |
| 74 | path, "sample_lost_task_exit", 0); |
| 75 | print_if("Nr. samples received: %u\n", |
| 76 | path, "sample_received", 1); |
| 77 | print_if("Nr. backtrace aborted: %u\n", |
| 78 | path, "backtrace_aborted", 0); |
| 79 | print_if("Nr. samples lost invalid pc: %u\n", |
| 80 | path, "sample_invalid_eip", 0); |
| 81 | } |
| 82 | closedir(dir); |
| 83 | out: |
| 84 | fflush(stdout); |
| 85 | } |