thread memory leak 2.4.26?

[davebardsley]

I'm a fledgling linux programmer and have created an apparent memory leak. I ran the following code over night (around 250e6 iterations on my machine) and have 'lost' nearly 128MB of RAM. Am I spawning and destroying the threads correctly or have I neglected an important step? I'm running the 2.4.26 kernel with gcc 3.3.4...

#include <stdio.h> 
#include <stdlib.h> 
#include <pthread.h> 

#define CHILDERN 2 

int *thread_child&#40;int *pArg&#41;; 

int main&#40;void&#41; &#123; 
pid_t PPID,PID; 
pthread_t thread&#91;CHILDERN&#93;; 
int **pRetPtr; 
unsigned int i = 0,j = 0,k; 

PPID = getppid&#40;&#41;; 
PID = getpid&#40;&#41;; 

printf&#40;"Root thread start&#58; Parent PID&#58; %i PID&#58; %i\n",PPID,PID&#41;; 
for&#40;;;&#41; &#123; 
for &#40;k=0;k<CHILDERN;k++&#41; 
pthread_create&#40;thread+k,NULL,&#40;void *&#40;*&#41;&#40;void *&#41;&#41;thread_child,&#40;void *&#41;&PPID&#41;; 
for &#40;k=0;k<CHILDERN;k++&#41; 
pthread_join&#40;*&#40;thread+k&#41;,&#40;void **&#41;pRetPtr&#41;; 
i+=CHILDERN; 
if&#40;&#40;j+=CHILDERN&#41;>10000&#41; &#123; 
j = 0; 
printf&#40;"%u\n",i&#41;; 
&#125; 
&#125; 
printf&#40;"Root thread stop&#58; Parent PID&#58; %i PID&#58; %i\n",PPID,PID&#41;; 

exit&#40;0&#41;; 
&#125; 

int *thread_child&#40;int *pArg&#41; &#123; 
pid_t PID; 
int i = *pArg; 

PID = getpid&#40;&#41;; 
pthread_exit&#40;&PID&#41;; 
&#125;

[deepali]

Hello,
I am facing the exact same issue with same linux kernal version 2.4.26 , gcc version 3.3.3 . Can anybody help me with the reason and the solution?

Thanks
Deepali

[fernape]

Try to monitor your process with top to ensure that is really your program who is leaking and this is not a memory management issue.

Best regards

[deepali]

Thanks for the reply. I have been monitoring the process using top command and the memory consumption has so far been constant (2.8 %) . Still after about 3895445 iterations I recive "out of memory" error during pthread_create() . What other memory issue could this be? My code runs on a embedded system with Linux 2.4.26.

Thanks.

Deepali