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What is the difference between a process task and threads
and what are the things that are acquired by the child
process from the parent process
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Answer Posted / renjith
Process is a program in execution or we can say that
process is an instance of a program. Program can have any
number of processes. A new process can be created using
fork()system call. Every process has its own Address space.
All the process Information are stored in a DataStucture
called Process Descriptor or Task Control block or Process
control block or task_struct. when a child process is
created , a seperate address space is created for child
process but it have the same memory image as that of parent.
Child process can share all the resoruces with parent.
After that any exec() executed , then child process
replaces the contents with the new program.
Thread is a light-weight process. We can say that thread is
with in the process . A process can have any number of
threads. All the threads uses address space of the process.
The main difference between Process and a thread is , CPU
switch from one process to another need save the current
information in Process Descriptor and load the information
of new process. But CPU switch from one thread to another
is simple.
| Is This Answer Correct ? | 24 Yes | 5 No |
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