diff options
Diffstat (limited to 'tools/gator/daemon/ConfigurationXML.cpp')
| -rw-r--r-- | tools/gator/daemon/ConfigurationXML.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/tools/gator/daemon/ConfigurationXML.cpp b/tools/gator/daemon/ConfigurationXML.cpp new file mode 100644 index 00000000000..2a5252a5bb0 --- /dev/null +++ b/tools/gator/daemon/ConfigurationXML.cpp @@ -0,0 +1,209 @@ +/** + * Copyright (C) ARM Limited 2010-2013. 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 "Driver.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_EVENT = "event"; +static const char* ATTR_COUNT = "count"; + +ConfigurationXML::ConfigurationXML() { + const char * configuration_xml; + unsigned int configuration_xml_len; + getDefaultConfigurationXml(configuration_xml, configuration_xml_len); + + char path[PATH_MAX]; + + getPath(path); + mConfigurationXML = util->readFromDisk(path); + + for (int retryCount = 0; retryCount < 2; ++retryCount) { + 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; + } + + int ret = parse(mConfigurationXML); + if (ret == 1) { + remove(); + + // Free the current configuration and reload + free((void*)mConfigurationXML); + mConfigurationXML = NULL; + continue; + } + + break; + } + + validate(); +} + +ConfigurationXML::~ConfigurationXML() { + if (mConfigurationXML) { + free((void*)mConfigurationXML); + } +} + +int ConfigurationXML::parse(const char* configurationXML) { + mxml_node_t *tree, *node; + int ret; + + // clear counter overflow + gSessionData->mCounterOverflow = 0; + mIndex = 0; + + // disable all counters prior to parsing the configuration xml + for (int i = 0; i < MAX_PERFORMANCE_COUNTERS; i++) { + gSessionData->mCounters[i].setEnabled(false); + } + + 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++) { + const Counter & counter = gSessionData->mCounters[i]; + if (counter.isEnabled()) { + if (strcmp(counter.getType(), "") == 0) { + logg->logError(__FILE__, __LINE__, "Invalid required attribute in configuration.xml:\n counter=\"%s\"\n event=%d\n", counter.getType(), counter.getEvent()); + handleException(); + } + + // iterate through the remaining enabled performance counters + for (int j = i + 1; j < MAX_PERFORMANCE_COUNTERS; j++) { + const Counter & counter2 = gSessionData->mCounters[j]; + if (counter2.isEnabled()) { + // check if the types are the same + if (strcmp(counter.getType(), counter2.getType()) == 0) { + logg->logError(__FILE__, __LINE__, "Duplicate performance counter type in configuration.xml: %s", counter.getType()); + handleException(); + } + } + } + } + } +} + +#define CONFIGURATION_REVISION 3 +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 + } + + // A revision >= CONFIGURATION_REVISION is okay + // Greater than can occur when Streamline is newer than gator + + return 0; +} + +void ConfigurationXML::configurationTag(mxml_node_t *node) { + // handle all other performance counters + if (mIndex >= MAX_PERFORMANCE_COUNTERS) { + mIndex++; + gSessionData->mCounterOverflow = mIndex; + return; + } + + // read attributes + Counter & counter = gSessionData->mCounters[mIndex]; + counter.clear(); + if (mxmlElementGetAttr(node, ATTR_COUNTER)) counter.setType(mxmlElementGetAttr(node, ATTR_COUNTER)); + if (mxmlElementGetAttr(node, ATTR_EVENT)) counter.setEvent(strtol(mxmlElementGetAttr(node, ATTR_EVENT), NULL, 16)); + if (mxmlElementGetAttr(node, ATTR_COUNT)) counter.setCount(strtol(mxmlElementGetAttr(node, ATTR_COUNT), NULL, 10)); + counter.setEnabled(true); + + // Associate a driver with each counter + for (Driver *driver = Driver::getHead(); driver != NULL; driver = driver->getNext()) { + if (driver->claimCounter(counter)) { + if (counter.getDriver() != NULL) { + logg->logError(__FILE__, __LINE__, "More than one driver has claimed %s:%i", counter.getType(), counter.getEvent()); + handleException(); + } + counter.setDriver(driver); + } + } + + // If no driver is associated with the counter, disable it + if (counter.getDriver() == NULL) { + logg->logMessage("No driver has claimed %s:%i", counter.getType(), counter.getEvent()); + counter.setEnabled(false); + } + + if (counter.isEnabled()) { + // 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; +} + +void ConfigurationXML::getPath(char* path) { + 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); + } +} + +void ConfigurationXML::remove() { + char path[PATH_MAX]; + getPath(path); + + 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"); +} |