pthread cleanup function is not getting called - c

Question

i am trying to use pthread clean up function to release the mutex which the cancelled thread is holding
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define SHOW_TECH_CMD_MAX_EXEC_TIME 5 //in secs
pthread_mutex_t waitMutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t testMutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t waitCond = PTHREAD_COND_INITIALIZER;
void mutex_cleanup_handler(void *arg )
{
printf("cleanup \n");
pthread_mutex_unlock( &testMutex );
}
void *execute_on_thread(void *arg);
void *execute_on_thread(void *arg)
{
pthread_cleanup_push(mutex_cleanup_handler, NULL);
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
pthread_mutex_lock( &testMutex );
while(1)
{
printf(".");
}
pthread_mutex_lock( &waitMutex );
pthread_cond_signal( &waitCond );
pthread_mutex_unlock( &waitMutex );
pthread_cleanup_pop(1); // even with 1 behavior remains the same
return (void *) 0;
}
int main( )
{
pthread_t tid;
struct timespec ts;
int error;
clock_gettime(CLOCK_REALTIME, &ts);
ts.tv_sec += 5;
pthread_create(&tid,NULL,execute_on_thread,NULL);
pthread_mutex_lock(&waitMutex);
error = pthread_cond_timedwait(&waitCond, &waitMutex,&ts);
pthread_mutex_unlock(&waitMutex);
printf("come here 1\n");
if(error == ETIMEDOUT)
{
printf("come here 2\n");
error = pthread_cancel(tid);
if(error != 0)
{
printf("come here 3\n");
}
}
}
cleanup function is not getting called itself
the thread is getting cleared properly , but the cleanup function is not being called

Answer 1

As Man says:
The pthread_cleanup_pop() function removes the routine at the top of
the stack of clean-up handlers, and optionally executes it if execute
is nonzero.
Then you have to write:
pthread_cleanup_pop(1);
Take note that your thread function definition is incorrect
EDIT
Using your code, the correction below works.
if(error == ETIMEDOUT)
{
printf("come here 2\n");
error = pthread_cancel(tid);
pthread_join(tid, NULL);
if(error != 0)
{
printf("come here 3\n");
}
You must wait the thread completion before end of your application.
In your code, after thread cancel request, the application ends immediately.