2 * Copyright (C) ARM Limited 2010-2014. All rights reserved.
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.
9 #include "UserSpaceSource.h"
11 #include <sys/prctl.h>
15 #include "DriverSource.h"
17 #include "SessionData.h"
19 #define NS_PER_US 1000
23 UserSpaceSource::UserSpaceSource(sem_t *senderSem) : mBuffer(0, FRAME_BLOCK_COUNTER, gSessionData->mTotalBufferSize*1024*1024, senderSem) {
26 UserSpaceSource::~UserSpaceSource() {
29 bool UserSpaceSource::prepare() {
33 void UserSpaceSource::run() {
34 prctl(PR_SET_NAME, (unsigned long)&"gatord-counters", 0, 0, 0);
36 gSessionData->hwmon.start();
37 gSessionData->fsDriver.start();
39 int64_t monotonic_started = 0;
40 while (monotonic_started <= 0) {
43 if (DriverSource::readInt64Driver("/dev/gator/started", &monotonic_started) == -1) {
44 logg->logError(__FILE__, __LINE__, "Error reading gator driver start time");
49 uint64_t next_time = 0;
50 while (gSessionData->mSessionIsActive) {
51 const uint64_t curr_time = getTime() - monotonic_started;
52 // Sample ten times a second ignoring gSessionData->mSampleRate
53 next_time += NS_PER_S/10;//gSessionData->mSampleRate;
54 if (next_time < curr_time) {
55 logg->logMessage("Too slow, curr_time: %lli next_time: %lli", curr_time, next_time);
56 next_time = curr_time;
59 if (mBuffer.eventHeader(curr_time)) {
60 gSessionData->hwmon.read(&mBuffer);
61 gSessionData->fsDriver.read(&mBuffer);
62 // Only check after writing all counters so that time and corresponding counters appear in the same frame
63 mBuffer.check(curr_time);
66 if (mBuffer.bytesAvailable() <= 0) {
67 logg->logMessage("One shot (counters)");
71 usleep((next_time - curr_time)/NS_PER_US);
77 void UserSpaceSource::interrupt() {
81 bool UserSpaceSource::isDone() {
82 return mBuffer.isDone();
85 void UserSpaceSource::write(Sender *sender) {
86 if (!mBuffer.isDone()) {
87 mBuffer.write(sender);