Project import
diff --git a/cpustats/Android.mk b/cpustats/Android.mk new file mode 100644 index 0000000..2789989 --- /dev/null +++ b/cpustats/Android.mk
@@ -0,0 +1,10 @@ +LOCAL_PATH := $(call my-dir) +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := cpustats.c + +LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES) +LOCAL_MODULE_TAGS := debug +LOCAL_MODULE := cpustats + +include $(BUILD_EXECUTABLE)
diff --git a/cpustats/NOTICE b/cpustats/NOTICE new file mode 100644 index 0000000..c77f135 --- /dev/null +++ b/cpustats/NOTICE
@@ -0,0 +1,190 @@ + + Copyright (c) 2012, The Android Open Source Project + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS +
diff --git a/cpustats/cpustats.c b/cpustats/cpustats.c new file mode 100644 index 0000000..32d75b2 --- /dev/null +++ b/cpustats/cpustats.c
@@ -0,0 +1,430 @@ +/* + * Copyright (c) 2012, The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google, Inc. nor the names of its contributors + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#define MAX_BUF_SIZE 64 + +struct freq_info { + unsigned freq; + long unsigned time; +}; + +struct cpu_info { + long unsigned utime, ntime, stime, itime, iowtime, irqtime, sirqtime; + struct freq_info *freqs; + int freq_count; +}; + +#define die(...) { fprintf(stderr, __VA_ARGS__); exit(EXIT_FAILURE); } + +static struct cpu_info old_total_cpu, new_total_cpu, *old_cpus, *new_cpus; +static int cpu_count, delay, iterations; +static char minimal, aggregate_freq_stats; + +static int get_cpu_count(); +static int get_cpu_count_from_file(char *filename); +static long unsigned get_cpu_total_time(struct cpu_info *cpu); +static int get_freq_scales_count(int cpu); +static void print_stats(); +static void print_cpu_stats(char *label, struct cpu_info *new_cpu, struct cpu_info *old_cpu, + char print_freq); +static void print_freq_stats(struct cpu_info *new_cpu, struct cpu_info *old_cpu); +static void read_stats(); +static void read_freq_stats(int cpu); +static char should_aggregate_freq_stats(); +static char should_print_freq_stats(); +static void usage(char *cmd); + +int main(int argc, char *argv[]) { + struct cpu_info *tmp_cpus, tmp_total_cpu; + int i, freq_count; + + delay = 3; + iterations = -1; + minimal = 0; + aggregate_freq_stats = 0; + + for (i = 0; i < argc; i++) { + if (!strcmp(argv[i], "-n")) { + if (i + 1 >= argc) { + fprintf(stderr, "Option -n expects an argument.\n"); + usage(argv[0]); + exit(EXIT_FAILURE); + } + iterations = atoi(argv[++i]); + continue; + } + if (!strcmp(argv[i], "-d")) { + if (i + 1 >= argc) { + fprintf(stderr, "Option -d expects an argument.\n"); + usage(argv[0]); + exit(EXIT_FAILURE); + } + delay = atoi(argv[++i]); + continue; + } + if (!strcmp(argv[i], "-m")) { + minimal = 1; + } + if (!strcmp(argv[i], "-h")) { + usage(argv[0]); + exit(EXIT_SUCCESS); + } + } + + cpu_count = get_cpu_count(); + + old_cpus = malloc(sizeof(struct cpu_info) * cpu_count); + if (!old_cpus) die("Could not allocate struct cpu_info\n"); + new_cpus = malloc(sizeof(struct cpu_info) * cpu_count); + if (!new_cpus) die("Could not allocate struct cpu_info\n"); + + for (i = 0; i < cpu_count; i++) { + old_cpus[i].freq_count = new_cpus[i].freq_count = get_freq_scales_count(i); + new_cpus[i].freqs = malloc(sizeof(struct freq_info) * new_cpus[i].freq_count); + if (!new_cpus[i].freqs) die("Could not allocate struct freq_info\n"); + old_cpus[i].freqs = malloc(sizeof(struct freq_info) * old_cpus[i].freq_count); + if (!old_cpus[i].freqs) die("Could not allocate struct freq_info\n"); + } + + // Read stats without aggregating freq stats in the total cpu + read_stats(); + + aggregate_freq_stats = should_aggregate_freq_stats(); + if (aggregate_freq_stats) { + old_total_cpu.freq_count = new_total_cpu.freq_count = new_cpus[0].freq_count; + new_total_cpu.freqs = malloc(sizeof(struct freq_info) * new_total_cpu.freq_count); + if (!new_total_cpu.freqs) die("Could not allocate struct freq_info\n"); + old_total_cpu.freqs = malloc(sizeof(struct freq_info) * old_total_cpu.freq_count); + if (!old_total_cpu.freqs) die("Could not allocate struct freq_info\n"); + + // Read stats again with aggregating freq stats in the total cpu + read_stats(); + } + + while ((iterations == -1) || (iterations-- > 0)) { + // Swap new and old cpu buffers; + tmp_total_cpu = old_total_cpu; + old_total_cpu = new_total_cpu; + new_total_cpu = tmp_total_cpu; + + tmp_cpus = old_cpus; + old_cpus = new_cpus; + new_cpus = tmp_cpus; + + sleep(delay); + read_stats(); + print_stats(); + } + + // Clean up + if (aggregate_freq_stats) { + free(new_total_cpu.freqs); + free(old_total_cpu.freqs); + } + for (i = 0; i < cpu_count; i++) { + free(new_cpus[i].freqs); + free(old_cpus[i].freqs); + } + free(new_cpus); + free(old_cpus); + + return 0; +} + +/* + * Get the number of CPUs of the system. + * + * Uses the two files /sys/devices/system/cpu/present and + * /sys/devices/system/cpu/online to determine the number of CPUs. Expects the + * format of both files to be either 0 or 0-N where N+1 is the number of CPUs. + * + * Exits if the present CPUs is not equal to the online CPUs + */ +static int get_cpu_count() { + int cpu_count = get_cpu_count_from_file("/sys/devices/system/cpu/present"); + if (cpu_count != get_cpu_count_from_file("/sys/devices/system/cpu/online")) { + die("present cpus != online cpus\n"); + } + return cpu_count; +} + +/* + * Get the number of CPUs from a given filename. + */ +static int get_cpu_count_from_file(char *filename) { + FILE *file; + char line[MAX_BUF_SIZE]; + int cpu_count; + + file = fopen(filename, "r"); + if (!file) die("Could not open %s\n", filename); + if (!fgets(line, MAX_BUF_SIZE, file)) die("Could not get %s contents\n", filename); + fclose(file); + + if (strcmp(line, "0\n") == 0) { + return 1; + } + + if (1 == sscanf(line, "0-%d\n", &cpu_count)) { + return cpu_count + 1; + } + + die("Unexpected input in file %s (%s).\n", filename, line); + return -1; +} + +/* + * Get the number of frequency states a given CPU can be scaled to. + */ +static int get_freq_scales_count(int cpu) { + FILE *file; + char filename[MAX_BUF_SIZE]; + long unsigned freq; + int count = 0; + + sprintf(filename, "/sys/devices/system/cpu/cpu%d/cpufreq/stats/time_in_state", cpu); + file = fopen(filename, "r"); + if (!file) die("Could not open %s\n", filename); + do { + freq = 0; + fscanf(file, "%lu %*d\n", &freq); + if (freq) count++; + } while(freq); + fclose(file); + + return count; +} + +/* + * Read the CPU and frequency stats for all cpus. + */ +static void read_stats() { + FILE *file; + char scanline[MAX_BUF_SIZE]; + int i; + + file = fopen("/proc/stat", "r"); + if (!file) die("Could not open /proc/stat.\n"); + fscanf(file, "cpu %lu %lu %lu %lu %lu %lu %lu %*d %*d %*d\n", + &new_total_cpu.utime, &new_total_cpu.ntime, &new_total_cpu.stime, &new_total_cpu.itime, + &new_total_cpu.iowtime, &new_total_cpu.irqtime, &new_total_cpu.sirqtime); + if (aggregate_freq_stats) { + for (i = 0; i < new_total_cpu.freq_count; i++) { + new_total_cpu.freqs[i].time = 0; + } + } + + for (i = 0; i < cpu_count; i++) { + sprintf(scanline, "cpu%d %%lu %%lu %%lu %%lu %%lu %%lu %%lu %%*d %%*d %%*d\n", i); + fscanf(file, scanline, &new_cpus[i].utime, &new_cpus[i].ntime, &new_cpus[i].stime, + &new_cpus[i].itime, &new_cpus[i].iowtime, &new_cpus[i].irqtime, + &new_cpus[i].sirqtime); + read_freq_stats(i); + } + fclose(file); +} + +/* + * Read the frequency stats for a given cpu. + */ +static void read_freq_stats(int cpu) { + FILE *file; + char filename[MAX_BUF_SIZE]; + int i; + + sprintf(filename, "/sys/devices/system/cpu/cpu%d/cpufreq/stats/time_in_state", cpu); + file = fopen(filename, "r"); + if (!file) die("Could not open %s\n", filename); + for (i = 0; i < new_cpus[cpu].freq_count; i++) { + fscanf(file, "%u %lu\n", &new_cpus[cpu].freqs[i].freq, + &new_cpus[cpu].freqs[i].time); + if (aggregate_freq_stats) { + new_total_cpu.freqs[i].freq = new_cpus[cpu].freqs[i].freq; + new_total_cpu.freqs[i].time += new_cpus[cpu].freqs[i].time; + } + } + fclose(file); +} + +/* + * Get the sum of the cpu time from all categories. + */ +static long unsigned get_cpu_total_time(struct cpu_info *cpu) { + return (cpu->utime + cpu->ntime + cpu->stime + cpu->itime + cpu->iowtime + cpu->irqtime + + cpu->sirqtime); +} + +/* + * Print the stats for all CPUs. + */ +static void print_stats() { + char label[8]; + int i, j; + char print_freq; + + print_freq = should_print_freq_stats(); + + print_cpu_stats("Total", &new_total_cpu, &old_total_cpu, 1); + for (i = 0; i < cpu_count; i++) { + sprintf(label, "cpu%d", i); + print_cpu_stats(label, &new_cpus[i], &old_cpus[i], print_freq); + } + printf("\n"); +} + +/* + * Print the stats for a single CPU. + */ +static void print_cpu_stats(char *label, struct cpu_info *new_cpu, struct cpu_info *old_cpu, + char print_freq) { + long int total_delta_time; + + if (!minimal) { + total_delta_time = get_cpu_total_time(new_cpu) - get_cpu_total_time(old_cpu); + printf("%s: User %ld + Nice %ld + Sys %ld + Idle %ld + IOW %ld + IRQ %ld + SIRQ %ld = " + "%ld\n", label, + new_cpu->utime - old_cpu->utime, + new_cpu->ntime - old_cpu->ntime, + new_cpu->stime - old_cpu->stime, + new_cpu->itime - old_cpu->itime, + new_cpu->iowtime - old_cpu->iowtime, + new_cpu->irqtime - old_cpu->irqtime, + new_cpu->sirqtime - old_cpu->sirqtime, + total_delta_time); + if (print_freq) { + print_freq_stats(new_cpu, old_cpu); + } + } else { + printf("%s,%ld,%ld,%ld,%ld,%ld,%ld,%ld", label, + new_cpu->utime - old_cpu->utime, + new_cpu->ntime - old_cpu->ntime, + new_cpu->stime - old_cpu->stime, + new_cpu->itime - old_cpu->itime, + new_cpu->iowtime - old_cpu->iowtime, + new_cpu->irqtime - old_cpu->irqtime, + new_cpu->sirqtime - old_cpu->sirqtime); + print_freq_stats(new_cpu, old_cpu); + printf("\n"); + } +} + +/* + * Print the CPU stats for a single CPU. + */ +static void print_freq_stats(struct cpu_info *new_cpu, struct cpu_info *old_cpu) { + long int delta_time, total_delta_time; + int i; + + if (new_cpu->freq_count > 0) { + if (!minimal) { + total_delta_time = 0; + printf(" "); + for (i = 0; i < new_cpu->freq_count; i++) { + delta_time = new_cpu->freqs[i].time - old_cpu->freqs[i].time; + total_delta_time += delta_time; + printf("%ukHz %ld", new_cpu->freqs[i].freq, delta_time); + if (i + 1 != new_cpu->freq_count) { + printf(" + \n "); + } else { + printf(" = "); + } + } + printf("%ld\n", total_delta_time); + } else { + for (i = 0; i < new_cpu->freq_count; i++) { + printf(",%u,%ld", new_cpu->freqs[i].freq, + new_cpu->freqs[i].time - old_cpu->freqs[i].time); + } + } + } +} + +/* + * Determine if frequency stats should be printed. + * + * If the frequency stats are different between CPUs, the stats should be + * printed for each CPU, else only the aggregate frequency stats should be + * printed. + */ +static char should_print_freq_stats() { + int i, j; + + for (i = 1; i < cpu_count; i++) { + for (j = 0; j < new_cpus[i].freq_count; j++) { + if (new_cpus[i].freqs[j].time - old_cpus[i].freqs[j].time != + new_cpus[0].freqs[j].time - old_cpus[0].freqs[j].time) { + return 1; + } + } + } + return 0; +} + +/* + * Determine if the frequency stats should be aggregated. + * + * Only aggregate the frequency stats in the total cpu stats if the frequencies + * reported by all CPUs are identical. Must be called after read_stats() has + * been called once. + */ +static char should_aggregate_freq_stats() { + int i, j; + + for (i = 1; i < cpu_count; i++) { + if (new_cpus[i].freq_count != new_cpus[0].freq_count) { + return 0; + } + for (j = 0; j < new_cpus[i].freq_count; j++) { + if (new_cpus[i].freqs[j].freq != new_cpus[0].freqs[j].freq) { + return 0; + } + } + } + + return 1; +} + +/* + * Print the usage message. + */ +static void usage(char *cmd) { + fprintf(stderr, "Usage %s [ -n iterations ] [ -d delay ] [ -c cpu ] [ -m ] [ -h ]\n" + " -n num Updates to show before exiting.\n" + " -d num Seconds to wait between updates.\n" + " -m Display minimal output.\n" + " -h Display this help screen.\n", + cmd); +}