Can two different threads in the same process access the same memory?

Can two different threads in the same process access the same memory?

can two threads share the same shared memory? Certainly. Typically all of the memory inside of a multi-threaded process is “shared” by all of the threads except for some relatively small stack spaces which are per-thread.

Do threads share the same memory?

Threads use the memory of the process they belong to. Inter-process communication is slow as processes have different memory addresses. Inter-thread communication can be faster than inter-process communication because threads of the same process share memory with the process they belong to.

How do threads of a process work in the same virtual memory?

In the abstract, that means that one thread’s stack runs from A to B, and a different thread’s stack runs from C to D, where A < B < C < D (i.e., the A-B range doesn’t overlap with the C-D range). Is the stack the only part in virtual memory that is unique per thread in Linux? The uniqueness of the stacks isn’t related to virtual memory.

How much memory does a Linux process have?

In memory, every running process is given 4GB of virtual address space considering a 32-bit architecture. The lower 3GB virtual addresses is accessible to the user space portion of the process and the upper 1GB is accessible to the kernel space portion.

What kind of memory does a thread use?

If thread uses heap (not only stack), then it needs more memory, and in that case you can start less threads. The simple answer to your question is, they use virtual memory. everything uses virtual memory except a handful of processes related to the OS.

How are threads different from the other processes?

processes have separate address spaces, whereas threads share their address space processes interact only through system-provided inter-process communication mechanisms. Context switching between threads in the same process is typically faster than context switching between processes.