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package jdk.jfr.internal.dcmd;



import jdk.jfr.internal.LogLevel;
import jdk.jfr.internal.LogTag;
import jdk.jfr.internal.Logger;
import jdk.jfr.internal.Options;
import jdk.jfr.internal.Repository;
import jdk.jfr.internal.SecuritySupport.SafePath;

JFR.configure - invoked from native
/** * JFR.configure - invoked from native * */
//Instantiated by native final class DCmdConfigure extends AbstractDCmd {
Execute JFR.configure.
Params:
  • repositoryPath – the path
  • dumpPath – path to dump to on fatal error (oom)
  • stackDepth – depth of stack traces
  • globalBufferCount – number of global buffers
  • globalBufferSize – size of global buffers
  • threadBufferSize – size of thread buffer for events
  • maxChunkSize – threshold at which a new chunk is created in the disk repository
  • sampleThreads – if thread sampling should be enabled
Throws:
Returns:result
/** * Execute JFR.configure. * * @param repositoryPath the path * @param dumpPath path to dump to on fatal error (oom) * @param stackDepth depth of stack traces * @param globalBufferCount number of global buffers * @param globalBufferSize size of global buffers * @param threadBufferSize size of thread buffer for events * @param maxChunkSize threshold at which a new chunk is created in the disk repository * @param sampleThreads if thread sampling should be enabled * * @return result * @throws DCmdException * if the dump could not be completed */
public String execute ( String repositoryPath, String dumpPath, Integer stackDepth, Long globalBufferCount, Long globalBufferSize, Long threadBufferSize, Long memorySize, Long maxChunkSize, Boolean sampleThreads ) throws DCmdException { if (Logger.shouldLog(LogTag.JFR_DCMD, LogLevel.DEBUG)) { Logger.log(LogTag.JFR_DCMD, LogLevel.DEBUG, "Executing DCmdConfigure: repositorypath=" + repositoryPath + ", dumppath=" + dumpPath + ", stackdepth=" + stackDepth + ", globalbuffercount=" + globalBufferCount + ", globalbuffersize=" + globalBufferSize + ", thread_buffer_size" + threadBufferSize + ", memorysize" + memorySize + ", maxchunksize=" + maxChunkSize + ", samplethreads" + sampleThreads); } boolean updated = false; if (repositoryPath != null) { try { SafePath s = new SafePath(repositoryPath); Repository.getRepository().setBasePath(s); Logger.log(LogTag.JFR, LogLevel.INFO, "Base repository path set to " + repositoryPath); } catch (Exception e) { throw new DCmdException("Could not use " + repositoryPath + " as repository. " + e.getMessage(), e); } printRepositoryPath(); updated = true; } if (dumpPath != null) { Options.setDumpPath(new SafePath(dumpPath)); Logger.log(LogTag.JFR, LogLevel.INFO, "Emergency dump path set to " + dumpPath); printDumpPath(); updated = true; } if (stackDepth != null) { Options.setStackDepth(stackDepth); Logger.log(LogTag.JFR, LogLevel.INFO, "Stack depth set to " + stackDepth); printStackDepth(); updated = true; } if (globalBufferCount != null) { Options.setGlobalBufferCount(globalBufferCount); Logger.log(LogTag.JFR, LogLevel.INFO, "Global buffer count set to " + globalBufferCount); printGlobalBufferCount(); updated = true; } if (globalBufferSize != null) { Options.setGlobalBufferSize(globalBufferSize); Logger.log(LogTag.JFR, LogLevel.INFO, "Global buffer size set to " + globalBufferSize); printGlobalBufferSize(); updated = true; } if (threadBufferSize != null) { Options.setThreadBufferSize(threadBufferSize); Logger.log(LogTag.JFR, LogLevel.INFO, "Thread buffer size set to " + threadBufferSize); printThreadBufferSize(); updated = true; } if (memorySize != null) { Options.setMemorySize(memorySize); Logger.log(LogTag.JFR, LogLevel.INFO, "Memory size set to " + memorySize); printMemorySize(); updated = true; } if (maxChunkSize != null) { Options.setMaxChunkSize(maxChunkSize); Logger.log(LogTag.JFR, LogLevel.INFO, "Max chunk size set to " + maxChunkSize); printMaxChunkSize(); updated = true; } if (sampleThreads != null) { Options.setSampleThreads(sampleThreads); Logger.log(LogTag.JFR, LogLevel.INFO, "Sample threads set to " + sampleThreads); printSampleThreads(); updated = true; } if (!updated) { println("Current configuration:"); println(); printRepositoryPath(); printStackDepth(); printGlobalBufferCount(); printGlobalBufferSize(); printThreadBufferSize(); printMemorySize(); printMaxChunkSize(); printSampleThreads(); } return getResult(); } private void printRepositoryPath() { print("Repository path: "); printPath(Repository.getRepository().getRepositoryPath()); println(); } private void printDumpPath() { print("Dump path: "); printPath(Options.getDumpPath()); println(); } private void printSampleThreads() { println("Sample threads: " + Options.getSampleThreads()); } private void printStackDepth() { println("Stack depth: " + Options.getStackDepth()); } private void printGlobalBufferCount() { println("Global buffer count: " + Options.getGlobalBufferCount()); } private void printGlobalBufferSize() { print("Global buffer size: "); printBytes(Options.getGlobalBufferSize()); println(); } private void printThreadBufferSize() { print("Thread buffer size: "); printBytes(Options.getThreadBufferSize()); println(); } private void printMemorySize() { print("Memory size: "); printBytes(Options.getMemorySize()); println(); } private void printMaxChunkSize() { print("Max chunk size: "); printBytes(Options.getMaxChunkSize()); println(); } }