Apache log4cxx framework – Example using Pthreads – Part Two

This blog post is continued from Apache log4cxx framework – Part One.

This post comprises of a simple Configuration file and how it can be incorporated to a c++ code file for using the log4cxx framework.

Configuration File (log4cxx.properties)

properties

# Set root logger level to DEBUG and its only appender to A1.
log4j.rootLogger=DEBUG, A1

# A1 is set to be a ConsoleAppender.
log4j.appender.A1=org.apache.log4j.ConsoleAppender

# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

C++ Code Example with Pthreads

cpp

#include <log4cxx/logger.h>
#include <log4cxx/basicconfigurator.h>
#include <log4cxx/propertyconfigurator.h>
#include <pthread.h>

using namespace log4cxx;

LoggerPtr logger(Logger::getLogger("MyApp"));

void* threadFunction(void* arg) {
    int threadId = *((int*)arg);
    LOG4CXX_INFO(logger, "Thread " << threadId << " started");
    // Do some work
    LOG4CXX_DEBUG(logger, "Thread " << threadId << " processing");
    LOG4CXX_INFO(logger, "Thread " << threadId << " finished");
    return NULL;
}

int main(int argc, char* argv[]) {
    PropertyConfigurator::configure("log4cxx.properties");
    
    pthread_t threads[5];
    int threadIds[5];
    
    for (int i = 0; i < 5; i++) {
        threadIds[i] = i;
        pthread_create(&threads[i], NULL, threadFunction, &threadIds[i]);
    }
    
    for (int i = 0; i < 5; i++) {
        pthread_join(threads[i], NULL);
    }
    
    return 0;
}

The log4cxx framework is thread-safe, making it ideal for multi-threaded applications using pthreads.

Configuration File (log4cxx.properties)

C++ Code Example with Pthreads

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