[png-mng-implement] PNG library in a multi-threa environment

[Dr. Y. S. <yeh...@ll...>]

Dear All

 

We use the PNG library on an x86-64 Red Hat machine.  A serial program reads
from an input file, processes the information and writes to a different
file. 

Now, we want to program in a multi-thread environment using pthreads
library. One thread reads the input file, while the other thread processes
the information and writes it to another file.

Given a series of input file: f1,f2, f3..

While contents of file1 are processed by one thread, the other thread reads
file2. That means the PNG library has to be re-entrant.  However, the
libraries installed on our machine does our requirement. 

The linker uses the shared object located at /usr/lib64.

Can you help us?

 

Best regards and thanks in advance.

 

Yehuda.Singer