3 ** Copyright 2015, The Android Open Source Project
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
9 ** http://www.apache.org/licenses/LICENSE-2.0
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
27 #include <sys/types.h>
37 #include <android-base/file.h>
38 #include <android-base/logging.h>
39 #include <android-base/properties.h>
40 #include <android-base/stringprintf.h>
42 #include "perfprofdcore.h"
43 #include "perfprofdutils.h"
44 #include "perf_data_converter.h"
45 #include "cpuconfig.h"
46 #include "configreader.h"
49 // Perf profiling daemon -- collects system-wide profiles using
51 // simpleperf record -a
53 // and encodes them so that they can be uploaded by a separate service.
56 //......................................................................
59 // Output file from 'perf record'.
61 #define PERF_OUTPUT "perf.data"
64 // This enum holds the results of the "should we profile" configuration check.
68 // All systems go for profile collection.
71 // The selected configuration directory doesn't exist.
72 DONT_PROFILE_MISSING_CONFIG_DIR,
74 // Destination directory does not contain the semaphore file that
75 // the perf profile uploading service creates when it determines
76 // that the user has opted "in" for usage data collection. No
77 // semaphore -> no user approval -> no profiling.
78 DONT_PROFILE_MISSING_SEMAPHORE,
80 // No perf executable present
81 DONT_PROFILE_MISSING_PERF_EXECUTABLE,
83 // We're running in the emulator, perf won't be able to do much
84 DONT_PROFILE_RUNNING_IN_EMULATOR
89 // Are we running in the emulator? If so, stub out profile collection
90 // Starts as uninitialized (-1), then set to 1 or 0 at init time.
92 static int running_in_emulator = -1;
95 // Is this a debug build ('userdebug' or 'eng')?
96 // Starts as uninitialized (-1), then set to 1 or 0 at init time.
98 static int is_debug_build = -1;
101 // Path to the perf file to convert and exit? Empty value is the default, daemon mode.
103 static std::string perf_file_to_convert = "";
106 // Random number generator seed (set at startup time).
108 static unsigned short random_seed[3];
111 // SIGHUP handler. Sending SIGHUP to the daemon can be used to break it
112 // out of a sleep() call so as to trigger a new collection (debugging)
114 static void sig_hup(int /* signum */)
116 W_ALOGW("SIGHUP received");
120 // Parse command line args. Currently supported flags:
121 // * "-c PATH" sets the path of the config file to PATH.
122 // * "-x PATH" reads PATH as a perf data file and saves it as a file in
123 // perf_profile.proto format. ".encoded" suffix is appended to PATH to form
124 // the output file path.
126 static void parse_args(int argc, char** argv)
130 for (ac = 1; ac < argc; ++ac) {
131 if (!strcmp(argv[ac], "-c")) {
133 W_ALOGE("malformed command line: -c option requires argument)");
136 ConfigReader::setConfigFilePath(argv[ac+1]);
138 } else if (!strcmp(argv[ac], "-x")) {
140 W_ALOGE("malformed command line: -x option requires argument)");
143 perf_file_to_convert = argv[ac+1];
146 W_ALOGE("malformed command line: unknown option or arg %s)", argv[ac]);
153 // Convert a CKPROFILE_RESULT to a string
155 const char *ckprofile_result_to_string(CKPROFILE_RESULT result)
158 case DO_COLLECT_PROFILE:
159 return "DO_COLLECT_PROFILE";
160 case DONT_PROFILE_MISSING_CONFIG_DIR:
161 return "missing config directory";
162 case DONT_PROFILE_MISSING_SEMAPHORE:
163 return "missing semaphore file";
164 case DONT_PROFILE_MISSING_PERF_EXECUTABLE:
165 return "missing 'perf' executable";
166 case DONT_PROFILE_RUNNING_IN_EMULATOR:
167 return "running in emulator";
168 default: return "unknown";
174 // Convert a PROFILE_RESULT to a string
176 const char *profile_result_to_string(PROFILE_RESULT result)
179 case OK_PROFILE_COLLECTION:
180 return "profile collection succeeded";
181 case ERR_FORK_FAILED:
182 return "fork() system call failed";
183 case ERR_PERF_RECORD_FAILED:
184 return "perf record returned bad exit status";
185 case ERR_PERF_ENCODE_FAILED:
186 return "failure encoding perf.data to protobuf";
187 case ERR_OPEN_ENCODED_FILE_FAILED:
188 return "failed to open encoded perf file";
189 case ERR_WRITE_ENCODED_FILE_FAILED:
190 return "write to encoded perf file failed";
191 default: return "unknown";
197 // Check to see whether we should perform a profile collection
199 static CKPROFILE_RESULT check_profiling_enabled(ConfigReader &config)
202 // Profile collection in the emulator doesn't make sense
204 assert(running_in_emulator != -1);
205 if (running_in_emulator) {
206 return DONT_PROFILE_RUNNING_IN_EMULATOR;
210 // Check for existence of semaphore file in config directory
212 if (access(config.getStringValue("config_directory").c_str(), F_OK) == -1) {
213 W_ALOGW("unable to open config directory %s: (%s)",
214 config.getStringValue("config_directory").c_str(), strerror(errno));
215 return DONT_PROFILE_MISSING_CONFIG_DIR;
219 // Check for existence of semaphore file
220 std::string semaphore_filepath = config.getStringValue("config_directory")
221 + "/" + SEMAPHORE_FILENAME;
222 if (access(semaphore_filepath.c_str(), F_OK) == -1) {
223 return DONT_PROFILE_MISSING_SEMAPHORE;
226 // Check for existence of simpleperf/perf executable
227 std::string pp = config.getStringValue("perf_path");
228 if (access(pp.c_str(), R_OK|X_OK) == -1) {
229 W_ALOGW("unable to access/execute %s", pp.c_str());
230 return DONT_PROFILE_MISSING_PERF_EXECUTABLE;
236 return DO_COLLECT_PROFILE;
241 return android::base::GetBoolProperty("sys.boot_completed", false) != true;
245 // Constructor takes a timeout (in seconds) and a child pid; If an
246 // alarm set for the specified number of seconds triggers, then a
247 // SIGKILL is sent to the child. Destructor resets alarm. Example:
249 // pid_t child_pid = ...;
250 // { AlarmHelper h(10, child_pid);
251 // ... = read_from_child(child_pid, ...);
254 // NB: this helper is not re-entrant-- avoid nested use or
255 // use by multiple threads
259 AlarmHelper(unsigned num_seconds, pid_t child)
261 struct sigaction sigact;
264 memset(&sigact, 0, sizeof(sigact));
265 sigact.sa_sigaction = handler;
266 sigaction(SIGALRM, &sigact, &oldsigact_);
274 sigaction(SIGALRM, &oldsigact_, NULL);
276 static void handler(int, siginfo_t *, void *);
279 struct sigaction oldsigact_;
283 pid_t AlarmHelper::child_;
285 void AlarmHelper::handler(int, siginfo_t *, void *)
287 W_ALOGW("SIGALRM timeout");
288 kill(child_, SIGKILL);
292 // This implementation invokes "dumpsys media.camera" and inspects the
293 // output to determine if any camera clients are active. NB: this is
294 // currently disable (via config option) until the selinux issues can
295 // be sorted out. Another possible implementation (not yet attempted)
296 // would be to use the binder to call into the native camera service
297 // via "ICameraService".
299 bool get_camera_active()
302 if (pipe2(pipefds, O_CLOEXEC) != 0) {
303 W_ALOGE("pipe2() failed (%s)", strerror(errno));
308 W_ALOGE("fork() failed (%s)", strerror(errno));
312 } else if (pid == 0) {
315 dup2(pipefds[1], fileno(stderr));
316 dup2(pipefds[1], fileno(stdout));
317 const char *argv[10];
319 argv[slot++] = "/system/bin/dumpsys";
320 argv[slot++] = "media.camera";
321 argv[slot++] = nullptr;
322 execvp(argv[0], (char * const *)argv);
323 W_ALOGE("execvp() failed (%s)", strerror(errno));
327 AlarmHelper helper(10, pid);
331 bool have_cam = false;
332 bool have_clients = true;
333 std::string dump_output;
334 bool result = android::base::ReadFdToString(pipefds[0], &dump_output);
337 std::stringstream ss(dump_output);
339 while (std::getline(ss,line,'\n')) {
340 if (line.find("Camera module API version:") !=
344 if (line.find("No camera module available") !=
346 line.find("No active camera clients yet") !=
348 have_clients = false;
353 // reap child (no zombies please)
355 TEMP_FAILURE_RETRY(waitpid(pid, &st, 0));
356 return have_cam && have_clients;
361 std::string psdir("/sys/class/power_supply");
362 DIR* dir = opendir(psdir.c_str());
364 W_ALOGE("Failed to open dir %s (%s)", psdir.c_str(), strerror(errno));
369 while ((e = readdir(dir)) != 0) {
370 if (e->d_name[0] != '.') {
371 std::string online_path = psdir + "/" + e->d_name + "/online";
372 std::string contents;
374 if (android::base::ReadFileToString(online_path.c_str(), &contents) &&
375 sscanf(contents.c_str(), "%d", &value) == 1) {
387 bool postprocess_proc_stat_contents(const std::string &pscontents,
388 long unsigned *idleticks,
389 long unsigned *remainingticks)
391 long unsigned usertime, nicetime, systime, idletime, iowaittime;
392 long unsigned irqtime, softirqtime;
394 int rc = sscanf(pscontents.c_str(), "cpu %lu %lu %lu %lu %lu %lu %lu",
395 &usertime, &nicetime, &systime, &idletime,
396 &iowaittime, &irqtime, &softirqtime);
400 *idleticks = idletime;
401 *remainingticks = usertime + nicetime + systime + iowaittime + irqtime + softirqtime;
405 unsigned collect_cpu_utilization()
407 std::string contents;
408 long unsigned idle[2];
409 long unsigned busy[2];
410 for (unsigned iter = 0; iter < 2; ++iter) {
411 if (!android::base::ReadFileToString("/proc/stat", &contents)) {
414 if (!postprocess_proc_stat_contents(contents, &idle[iter], &busy[iter])) {
421 long unsigned total_delta = (idle[1] + busy[1]) - (idle[0] + busy[0]);
422 long unsigned busy_delta = busy[1] - busy[0];
423 return busy_delta * 100 / total_delta;
426 static void annotate_encoded_perf_profile(wireless_android_play_playlog::AndroidPerfProfile *profile,
427 const ConfigReader &config,
428 unsigned cpu_utilization)
431 // Incorporate cpu utilization (collected prior to perf run)
433 if (config.getUnsignedValue("collect_cpu_utilization")) {
434 profile->set_cpu_utilization(cpu_utilization);
438 // Load average as reported by the kernel
442 if (android::base::ReadFileToString("/proc/loadavg", &load) &&
443 sscanf(load.c_str(), "%lf", &fload) == 1) {
444 int iload = static_cast<int>(fload * 100.0);
445 profile->set_sys_load_average(iload);
447 W_ALOGE("Failed to read or scan /proc/loadavg (%s)", strerror(errno));
451 // Device still booting? Camera in use? Plugged into charger?
453 bool is_booting = get_booting();
454 if (config.getUnsignedValue("collect_booting")) {
455 profile->set_booting(is_booting);
457 if (config.getUnsignedValue("collect_camera_active")) {
458 profile->set_camera_active(is_booting ? false : get_camera_active());
460 if (config.getUnsignedValue("collect_charging_state")) {
461 profile->set_on_charger(get_charging());
465 // Examine the contents of wake_unlock to determine whether the
466 // device display is on or off. NB: is this really the only way to
467 // determine this info?
470 if (android::base::ReadFileToString("/sys/power/wake_unlock", &disp)) {
471 bool ison = (strstr(disp.c_str(), "PowerManagerService.Display") == 0);
472 profile->set_display_on(ison);
474 W_ALOGE("Failed to read /sys/power/wake_unlock (%s)", strerror(errno));
478 inline char* string_as_array(std::string* str) {
479 return str->empty() ? NULL : &*str->begin();
482 PROFILE_RESULT encode_to_proto(const std::string &data_file_path,
483 const char *encoded_file_path,
484 const ConfigReader &config,
485 unsigned cpu_utilization)
488 // Open and read perf.data file
490 const wireless_android_play_playlog::AndroidPerfProfile &encodedProfile =
491 wireless_android_logging_awp::RawPerfDataToAndroidPerfProfile(data_file_path);
494 // Issue error if no samples
496 if (encodedProfile.programs().size() == 0) {
497 return ERR_PERF_ENCODE_FAILED;
500 // All of the info in 'encodedProfile' is derived from the perf.data file;
501 // here we tack display status, cpu utilization, system load, etc.
502 wireless_android_play_playlog::AndroidPerfProfile &prof =
503 const_cast<wireless_android_play_playlog::AndroidPerfProfile&>
505 annotate_encoded_perf_profile(&prof, config, cpu_utilization);
508 // Serialize protobuf to array
510 int size = encodedProfile.ByteSize();
513 ::google::protobuf::uint8* dtarget =
514 reinterpret_cast<::google::protobuf::uint8*>(string_as_array(&data));
515 encodedProfile.SerializeWithCachedSizesToArray(dtarget);
518 // Open file and write encoded data to it
520 FILE *fp = fopen(encoded_file_path, "w");
522 return ERR_OPEN_ENCODED_FILE_FAILED;
525 if (fwrite(dtarget, fsiz, 1, fp) != 1) {
527 return ERR_WRITE_ENCODED_FILE_FAILED;
530 chmod(encoded_file_path, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
532 return OK_PROFILE_COLLECTION;
536 // Invoke "perf record". Return value is OK_PROFILE_COLLECTION for
537 // success, or some other error code if something went wrong.
539 static PROFILE_RESULT invoke_perf(const std::string &perf_path,
540 unsigned sampling_period,
541 const char *stack_profile_opt,
543 const std::string &data_dir_path,
544 const std::string &data_file_path,
545 const std::string &perf_stderr_path)
550 return ERR_FORK_FAILED;
556 // Workaround for temporary files.
557 if (chdir(data_dir_path.c_str()) != 0) {
558 PLOG(WARNING) << "Could not change working directory to " << data_dir_path;
561 // Open file to receive stderr/stdout from perf
562 FILE *efp = fopen(perf_stderr_path.c_str(), "w");
564 dup2(fileno(efp), STDERR_FILENO);
565 dup2(fileno(efp), STDOUT_FILENO);
567 W_ALOGW("unable to open %s for writing", perf_stderr_path.c_str());
570 // marshall arguments
571 constexpr unsigned max_args = 13;
572 const char *argv[max_args];
574 argv[slot++] = perf_path.c_str();
575 argv[slot++] = "record";
579 argv[slot++] = data_file_path.c_str();
583 std::string p_str = android::base::StringPrintf("%u", sampling_period);
584 argv[slot++] = p_str.c_str();
587 if (stack_profile_opt)
588 argv[slot++] = stack_profile_opt;
590 // system wide profiling
593 // no need for kernel symbols
594 argv[slot++] = "--no-dump-kernel-symbols";
597 argv[slot++] = "/system/bin/sleep";
598 std::string d_str = android::base::StringPrintf("%u", duration);
599 argv[slot++] = d_str.c_str();
602 argv[slot++] = nullptr;
603 assert(slot < max_args);
605 // record the final command line in the error output file for
606 // posterity/debugging purposes
607 fprintf(stderr, "perf invocation (pid=%d):\n", getpid());
608 for (unsigned i = 0; argv[i] != nullptr; ++i) {
609 fprintf(stderr, "%s%s", i ? " " : "", argv[i]);
611 fprintf(stderr, "\n");
614 execvp(argv[0], (char * const *)argv);
615 fprintf(stderr, "exec failed: %s\n", strerror(errno));
621 pid_t reaped = TEMP_FAILURE_RETRY(waitpid(pid, &st, 0));
624 W_ALOGW("waitpid failed: %s", strerror(errno));
625 } else if (WIFSIGNALED(st)) {
626 W_ALOGW("perf killed by signal %d", WTERMSIG(st));
627 } else if (WEXITSTATUS(st) != 0) {
628 W_ALOGW("perf bad exit status %d", WEXITSTATUS(st));
630 return OK_PROFILE_COLLECTION;
634 return ERR_PERF_RECORD_FAILED;
638 // Remove all files in the destination directory during initialization
640 static void cleanup_destination_dir(const ConfigReader &config)
642 std::string dest_dir = config.getStringValue("destination_directory");
643 DIR* dir = opendir(dest_dir.c_str());
646 while ((e = readdir(dir)) != 0) {
647 if (e->d_name[0] != '.') {
648 std::string file_path = dest_dir + "/" + e->d_name;
649 remove(file_path.c_str());
654 W_ALOGW("unable to open destination dir %s for cleanup",
660 // Post-processes after profile is collected and converted to protobuf.
661 // * GMS core stores processed file sequence numbers in
662 // /data/data/com.google.android.gms/files/perfprofd_processed.txt
663 // * Update /data/misc/perfprofd/perfprofd_produced.txt to remove the sequence
664 // numbers that have been processed and append the current seq number
665 // Returns true if the current_seq should increment.
667 static bool post_process(const ConfigReader &config, int current_seq)
669 std::string dest_dir = config.getStringValue("destination_directory");
670 std::string processed_file_path =
671 config.getStringValue("config_directory") + "/" + PROCESSED_FILENAME;
672 std::string produced_file_path = dest_dir + "/" + PRODUCED_FILENAME;
675 std::set<int> processed;
676 FILE *fp = fopen(processed_file_path.c_str(), "r");
679 while(fscanf(fp, "%d\n", &seq) > 0) {
680 if (remove(android::base::StringPrintf(
681 "%s/perf.data.encoded.%d", dest_dir.c_str(),seq).c_str()) == 0) {
682 processed.insert(seq);
688 std::set<int> produced;
689 fp = fopen(produced_file_path.c_str(), "r");
692 while(fscanf(fp, "%d\n", &seq) > 0) {
693 if (processed.find(seq) == processed.end()) {
694 produced.insert(seq);
700 unsigned maxLive = config.getUnsignedValue("max_unprocessed_profiles");
701 if (produced.size() >= maxLive) {
705 produced.insert(current_seq);
706 fp = fopen(produced_file_path.c_str(), "w");
708 W_ALOGW("Cannot write %s", produced_file_path.c_str());
711 for (std::set<int>::const_iterator iter = produced.begin();
712 iter != produced.end(); ++iter) {
713 fprintf(fp, "%d\n", *iter);
716 chmod(produced_file_path.c_str(),
717 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
722 // Collect a perf profile. Steps for this operation are:
723 // - kick off 'perf record'
724 // - read perf.data, convert to protocol buf
726 static PROFILE_RESULT collect_profile(const ConfigReader &config, int seq)
729 // Collect cpu utilization if enabled
731 unsigned cpu_utilization = 0;
732 if (config.getUnsignedValue("collect_cpu_utilization")) {
733 cpu_utilization = collect_cpu_utilization();
737 // Form perf.data file name, perf error output file name
739 std::string destdir = config.getStringValue("destination_directory");
740 std::string data_dir_path(destdir);
741 std::string data_file_path = data_dir_path + "/" PERF_OUTPUT;
742 std::string perf_stderr_path(destdir);
743 perf_stderr_path += "/perferr.txt";
746 // Remove any existing perf.data file -- if we don't do this, perf
747 // will rename the old file and we'll have extra cruft lying around.
750 if (stat(data_file_path.c_str(), &statb) == 0) { // if file exists...
751 if (unlink(data_file_path.c_str())) { // then try to remove
752 W_ALOGW("unable to unlink previous perf.data file");
757 // The "mpdecision" daemon can cause problems for profile
758 // collection: if it decides to online a CPU partway through the
759 // 'perf record' run, the activity on that CPU will be invisible to
760 // perf, and if it offlines a CPU during the recording this can
761 // sometimes leave the PMU in an unusable state (dmesg errors of the
762 // form "perfevents: unable to request IRQXXX for ..."). To avoid
763 // these issues, if "mpdecision" is running the helper below will
764 // stop the service and then online all available CPUs. The object
765 // destructor (invoked when this routine terminates) will then
766 // restart the service again when needed.
768 unsigned duration = config.getUnsignedValue("sample_duration");
769 unsigned hardwire = config.getUnsignedValue("hardwire_cpus");
770 unsigned max_duration = config.getUnsignedValue("hardwire_cpus_max_duration");
771 bool take_action = (hardwire && duration <= max_duration);
772 HardwireCpuHelper helper(take_action);
777 const char *stack_profile_opt =
778 (config.getUnsignedValue("stack_profile") != 0 ? "-g" : nullptr);
779 std::string perf_path = config.getStringValue("perf_path");
780 unsigned period = config.getUnsignedValue("sampling_period");
782 PROFILE_RESULT ret = invoke_perf(perf_path.c_str(),
789 if (ret != OK_PROFILE_COLLECTION) {
794 // Read the resulting perf.data file, encode into protocol buffer, then write
795 // the result to the file perf.data.encoded
797 std::string path = android::base::StringPrintf(
798 "%s.encoded.%d", data_file_path.c_str(), seq);
799 return encode_to_proto(data_file_path, path.c_str(), config, cpu_utilization);
803 // Assuming that we want to collect a profile every N seconds,
804 // randomly partition N into two sub-intervals.
806 static void determine_before_after(unsigned &sleep_before_collect,
807 unsigned &sleep_after_collect,
808 unsigned collection_interval)
810 double frac = erand48(random_seed);
811 sleep_before_collect = (unsigned) (((double)collection_interval) * frac);
812 assert(sleep_before_collect <= collection_interval);
813 sleep_after_collect = collection_interval - sleep_before_collect;
817 // Set random number generator seed
819 static void set_seed(ConfigReader &config)
822 unsigned use_fixed_seed = config.getUnsignedValue("use_fixed_seed");
823 if (use_fixed_seed) {
825 // Use fixed user-specified seed
827 seed = use_fixed_seed;
834 W_ALOGI("random seed set to %u", seed);
835 // Distribute the 32-bit seed into the three 16-bit array
836 // elements. The specific values being written do not especially
837 // matter as long as we are setting them to something based on the seed.
838 random_seed[0] = seed & 0xffff;
839 random_seed[1] = (seed >> 16);
840 random_seed[2] = (random_seed[0] ^ random_seed[1]);
846 static void init(ConfigReader &config)
848 if (!config.readFile()) {
849 W_ALOGE("unable to open configuration file %s",
850 config.getConfigFilePath());
853 // Children of init inherit an artificially low OOM score -- this is not
854 // desirable for perfprofd (its OOM score should be on par with
855 // other user processes).
856 std::stringstream oomscore_path;
857 oomscore_path << "/proc/" << getpid() << "/oom_score_adj";
858 if (!android::base::WriteStringToFile("0", oomscore_path.str())) {
859 W_ALOGE("unable to write to %s", oomscore_path.str().c_str());
863 cleanup_destination_dir(config);
865 running_in_emulator = android::base::GetBoolProperty("ro.kernel.qemu", false);
866 is_debug_build = android::base::GetBoolProperty("ro.debuggable", false);
868 signal(SIGHUP, sig_hup);
873 // 1. parse cmd line args
874 // 2. read config file
877 // perform a profile collection
880 int perfprofd_main(int argc, char** argv)
884 W_ALOGI("starting Android Wide Profiling daemon");
886 parse_args(argc, argv);
889 if (!perf_file_to_convert.empty()) {
890 std::string encoded_path = perf_file_to_convert + ".encoded";
891 encode_to_proto(perf_file_to_convert, encoded_path.c_str(), config, 0);
895 // Early exit if we're not supposed to run on this build flavor
896 if (is_debug_build != 1 &&
897 config.getUnsignedValue("only_debug_build") == 1) {
898 W_ALOGI("early exit due to inappropriate build type");
902 unsigned iterations = 0;
904 while(config.getUnsignedValue("main_loop_iterations") == 0 ||
905 iterations < config.getUnsignedValue("main_loop_iterations")) {
907 // Figure out where in the collection interval we're going to actually
909 unsigned sleep_before_collect = 0;
910 unsigned sleep_after_collect = 0;
911 determine_before_after(sleep_before_collect, sleep_after_collect,
912 config.getUnsignedValue("collection_interval"));
913 perfprofd_sleep(sleep_before_collect);
915 // Reread config file -- the uploader may have rewritten it as a result
916 // of a gservices change
919 // Check for profiling enabled...
920 CKPROFILE_RESULT ckresult = check_profiling_enabled(config);
921 if (ckresult != DO_COLLECT_PROFILE) {
922 W_ALOGI("profile collection skipped (%s)",
923 ckprofile_result_to_string(ckresult));
925 // Kick off the profiling run...
926 W_ALOGI("initiating profile collection");
927 PROFILE_RESULT result = collect_profile(config, seq);
928 if (result != OK_PROFILE_COLLECTION) {
929 W_ALOGI("profile collection failed (%s)",
930 profile_result_to_string(result));
932 if (post_process(config, seq)) {
935 W_ALOGI("profile collection complete");
938 perfprofd_sleep(sleep_after_collect);
942 W_ALOGI("finishing Android Wide Profiling daemon");