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/**
* Copyright (C) ARM Limited 2010-2012. 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 <string.h>
#include <stdlib.h>
#include <dirent.h>
#include "ConfigurationXML.h"
#include "Logging.h"
#include "OlyUtility.h"
#include "SessionData.h"
static const char* ATTR_COUNTER = "counter";
static const char* ATTR_REVISION = "revision";
static const char* ATTR_TITLE = "title";
static const char* ATTR_NAME = "name";
static const char* ATTR_EVENT = "event";
static const char* ATTR_COUNT = "count";
static const char* ATTR_PER_CPU = "per_cpu";
static const char* ATTR_DESCRIPTION = "description";
static const char* ATTR_EBS = "supports_event_based_sampling";
static const char* ATTR_DISPLAY = "display";
static const char* ATTR_UNITS = "units";
static const char* ATTR_AVERAGE_SELECTION = "average_selection";
ConfigurationXML::ConfigurationXML() {
const char * configuration_xml;
unsigned int configuration_xml_len;
getDefaultConfigurationXml(configuration_xml, configuration_xml_len);
mIndex = 0;
char* path = (char*)malloc(PATH_MAX);
if (gSessionData->mConfigurationXMLPath) {
strncpy(path, gSessionData->mConfigurationXMLPath, PATH_MAX);
} else {
if (util->getApplicationFullPath(path, PATH_MAX) != 0) {
logg->logMessage("Unable to determine the full path of gatord, the cwd will be used");
}
strncat(path, "configuration.xml", PATH_MAX - strlen(path) - 1);
}
mConfigurationXML = util->readFromDisk(path);
if (mConfigurationXML == NULL) {
logg->logMessage("Unable to locate configuration.xml, using default in binary");
// null-terminate configuration_xml
mConfigurationXML = (char*)malloc(configuration_xml_len + 1);
memcpy(mConfigurationXML, (const void*)configuration_xml, configuration_xml_len);
mConfigurationXML[configuration_xml_len] = 0;
}
// disable all counters prior to parsing the configuration xml
for (int i = 0; i < MAX_PERFORMANCE_COUNTERS; i++) {
gSessionData->mPerfCounterEnabled[i] = 0;
}
// clear counter overflow
gSessionData->mCounterOverflow = false;
int ret = parse(mConfigurationXML);
if (ret == 1) {
// remove configuration.xml on disk to use the default
if (remove(path) != 0) {
logg->logError(__FILE__, __LINE__, "Invalid configuration.xml file detected and unable to delete it. To resolve, delete configuration.xml on disk");
handleException();
}
logg->logMessage("Invalid configuration.xml file detected and removed");
}
validate();
free(path);
}
ConfigurationXML::~ConfigurationXML() {
if (mConfigurationXML) {
free((void*)mConfigurationXML);
}
}
int ConfigurationXML::parse(const char* configurationXML) {
mxml_node_t *tree, *node;
int ret;
tree = mxmlLoadString(NULL, configurationXML, MXML_NO_CALLBACK);
node = mxmlGetFirstChild(tree);
while (node && mxmlGetType(node) != MXML_ELEMENT)
node = mxmlWalkNext(node, tree, MXML_NO_DESCEND);
ret = configurationsTag(node);
node = mxmlGetFirstChild(node);
while (node) {
if (mxmlGetType(node) != MXML_ELEMENT) {
node = mxmlWalkNext(node, tree, MXML_NO_DESCEND);
continue;
}
configurationTag(node);
node = mxmlWalkNext(node, tree, MXML_NO_DESCEND);
}
mxmlDelete(tree);
return ret;
}
void ConfigurationXML::validate(void) {
for (int i = 0; i < MAX_PERFORMANCE_COUNTERS; i++) {
if (gSessionData->mPerfCounterEnabled[i]) {
if (strcmp(gSessionData->mPerfCounterType[i], "") == 0) {
logg->logError(__FILE__, __LINE__, "Invalid required attribute in configuration.xml:\n counter=\"%s\"\n title=\"%s\"\n name=\"%s\"\n event=%d\n", gSessionData->mPerfCounterType[i], gSessionData->mPerfCounterTitle[i], gSessionData->mPerfCounterName[i], gSessionData->mPerfCounterEvent[i]);
handleException();
}
// iterate through the remaining enabled performance counters
for (int j = i + 1; j < MAX_PERFORMANCE_COUNTERS; j++) {
if (gSessionData->mPerfCounterEnabled[j]) {
// check if the types are the same
if (strcmp(gSessionData->mPerfCounterType[i], gSessionData->mPerfCounterType[j]) == 0) {
logg->logError(__FILE__, __LINE__, "Duplicate performance counter type in configuration.xml: %s", gSessionData->mPerfCounterType[i]);
handleException();
}
}
}
}
}
}
#define CONFIGURATION_REVISION 1
int ConfigurationXML::configurationsTag(mxml_node_t *node) {
const char* revision_string;
revision_string = mxmlElementGetAttr(node, ATTR_REVISION);
if (!revision_string) {
return 1; //revision issue;
}
int revision = strtol(revision_string, NULL, 10);
if (revision < CONFIGURATION_REVISION) {
return 1; // revision issue
}
return 0;
}
void ConfigurationXML::configurationTag(mxml_node_t *node) {
// handle all other performance counters
if (mIndex >= MAX_PERFORMANCE_COUNTERS) {
gSessionData->mCounterOverflow = true;
return;
}
// read attributes
if (mxmlElementGetAttr(node, ATTR_COUNTER)) strncpy(gSessionData->mPerfCounterType[mIndex], mxmlElementGetAttr(node, ATTR_COUNTER), sizeof(gSessionData->mPerfCounterType[mIndex]));
if (mxmlElementGetAttr(node, ATTR_TITLE)) strncpy(gSessionData->mPerfCounterTitle[mIndex], mxmlElementGetAttr(node, ATTR_TITLE), sizeof(gSessionData->mPerfCounterTitle[mIndex]));
if (mxmlElementGetAttr(node, ATTR_NAME)) strncpy(gSessionData->mPerfCounterName[mIndex], mxmlElementGetAttr(node, ATTR_NAME), sizeof(gSessionData->mPerfCounterName[mIndex]));
if (mxmlElementGetAttr(node, ATTR_DESCRIPTION)) strncpy(gSessionData->mPerfCounterDescription[mIndex], mxmlElementGetAttr(node, ATTR_DESCRIPTION), sizeof(gSessionData->mPerfCounterDescription[mIndex]));
if (mxmlElementGetAttr(node, ATTR_EVENT)) gSessionData->mPerfCounterEvent[mIndex] = strtol(mxmlElementGetAttr(node, ATTR_EVENT), NULL, 16);
if (mxmlElementGetAttr(node, ATTR_COUNT)) gSessionData->mPerfCounterCount[mIndex] = strtol(mxmlElementGetAttr(node, ATTR_COUNT), NULL, 10);
if (mxmlElementGetAttr(node, ATTR_PER_CPU)) gSessionData->mPerfCounterPerCPU[mIndex] = util->stringToBool(mxmlElementGetAttr(node, ATTR_PER_CPU), false);
if (mxmlElementGetAttr(node, ATTR_EBS)) gSessionData->mPerfCounterEBSCapable[mIndex] = util->stringToBool(mxmlElementGetAttr(node, ATTR_EBS), false);
if (mxmlElementGetAttr(node, ATTR_DISPLAY)) strncpy(gSessionData->mPerfCounterDisplay[mIndex], mxmlElementGetAttr(node, ATTR_DISPLAY), sizeof(gSessionData->mPerfCounterDisplay[mIndex]));
if (mxmlElementGetAttr(node, ATTR_UNITS)) strncpy(gSessionData->mPerfCounterUnits[mIndex], mxmlElementGetAttr(node, ATTR_UNITS), sizeof(gSessionData->mPerfCounterUnits[mIndex]));
if (mxmlElementGetAttr(node, ATTR_AVERAGE_SELECTION)) gSessionData->mPerfCounterAverageSelection[mIndex] = util->stringToBool(mxmlElementGetAttr(node, ATTR_AVERAGE_SELECTION), false);
gSessionData->mPerfCounterEnabled[mIndex] = true;
// strncpy does not guarantee a null-terminated string
gSessionData->mPerfCounterType[mIndex][sizeof(gSessionData->mPerfCounterType[mIndex]) - 1] = 0;
gSessionData->mPerfCounterTitle[mIndex][sizeof(gSessionData->mPerfCounterTitle[mIndex]) - 1] = 0;
gSessionData->mPerfCounterName[mIndex][sizeof(gSessionData->mPerfCounterName[mIndex]) - 1] = 0;
gSessionData->mPerfCounterDescription[mIndex][sizeof(gSessionData->mPerfCounterDescription[mIndex]) - 1] = 0;
gSessionData->mPerfCounterDisplay[mIndex][sizeof(gSessionData->mPerfCounterDisplay[mIndex]) - 1] = 0;
gSessionData->mPerfCounterUnits[mIndex][sizeof(gSessionData->mPerfCounterUnits[mIndex]) - 1] = 0;
// update counter index
mIndex++;
}
void ConfigurationXML::getDefaultConfigurationXml(const char * & xml, unsigned int & len) {
#include "configuration_xml.h" // defines and initializes char configuration_xml[] and int configuration_xml_len
xml = (const char *)configuration_xml;
len = configuration_xml_len;
}
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