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Diffstat (limited to 'tools/gator/daemon/UserSpaceSource.cpp')
-rw-r--r-- | tools/gator/daemon/UserSpaceSource.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/tools/gator/daemon/UserSpaceSource.cpp b/tools/gator/daemon/UserSpaceSource.cpp new file mode 100644 index 000000000000..4a9b22f4b555 --- /dev/null +++ b/tools/gator/daemon/UserSpaceSource.cpp @@ -0,0 +1,94 @@ +/** + * Copyright (C) ARM Limited 2010-2014. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "UserSpaceSource.h" + +#include <sys/prctl.h> +#include <unistd.h> + +#include "Child.h" +#include "DriverSource.h" +#include "Logging.h" +#include "SessionData.h" + +extern Child *child; + +UserSpaceSource::UserSpaceSource(sem_t *senderSem) : mBuffer(0, FRAME_BLOCK_COUNTER, gSessionData->mTotalBufferSize*1024*1024, senderSem) { +} + +UserSpaceSource::~UserSpaceSource() { +} + +bool UserSpaceSource::prepare() { + return true; +} + +void UserSpaceSource::run() { + prctl(PR_SET_NAME, (unsigned long)&"gatord-counters", 0, 0, 0); + + for (int i = 0; i < ARRAY_LENGTH(gSessionData->usDrivers); ++i) { + gSessionData->usDrivers[i]->start(); + } + + int64_t monotonic_started = 0; + while (monotonic_started <= 0) { + usleep(10); + + if (gSessionData->perf.isSetup()) { + monotonic_started = gSessionData->mMonotonicStarted; + } else { + if (DriverSource::readInt64Driver("/dev/gator/started", &monotonic_started) == -1) { + logg->logError(__FILE__, __LINE__, "Error reading gator driver start time"); + handleException(); + } + gSessionData->mMonotonicStarted = monotonic_started; + } + } + + uint64_t next_time = 0; + while (gSessionData->mSessionIsActive) { + const uint64_t curr_time = getTime() - monotonic_started; + // Sample ten times a second ignoring gSessionData->mSampleRate + next_time += NS_PER_S/10;//gSessionData->mSampleRate; + if (next_time < curr_time) { + logg->logMessage("Too slow, curr_time: %lli next_time: %lli", curr_time, next_time); + next_time = curr_time; + } + + if (mBuffer.eventHeader(curr_time)) { + for (int i = 0; i < ARRAY_LENGTH(gSessionData->usDrivers); ++i) { + gSessionData->usDrivers[i]->read(&mBuffer); + } + // Only check after writing all counters so that time and corresponding counters appear in the same frame + mBuffer.check(curr_time); + } + + if (mBuffer.bytesAvailable() <= 0) { + logg->logMessage("One shot (counters)"); + child->endSession(); + } + + usleep((next_time - curr_time)/NS_PER_US); + } + + mBuffer.setDone(); +} + +void UserSpaceSource::interrupt() { + // Do nothing +} + +bool UserSpaceSource::isDone() { + return mBuffer.isDone(); +} + +void UserSpaceSource::write(Sender *sender) { + if (!mBuffer.isDone()) { + mBuffer.write(sender); + } +} |