Can multiple threads read the same file at the same time?

Multiple threads can also read data from the same FITS file simultaneously, as long as the file was opened independently by each thread. This relies on the operating system to correctly deal with reading the same file by multiple processes. Different threads should never try to write to the same FITS file.

Can two threads run simultaneously?

On a single core microprocessor (uP), it is possible to run multiple threads, but not in parallel. Although conceptually the threads are often said to run at the same time, they are actually running consecutively in time slices allocated and controlled by the operating system.

Can multiple threads read from the same file Python?

Yes, it’s possible for a program to open the same file multiple times from different threads. You’ll want to avoid reading from the file at the same time you’re writing to it, though. You can use TMultiReadExclusiveWriteSynchronizer to control access to the entire file.

Can multiple threads read the same file Java?

In order to read the file, only one thread is enough. You won’t gain anything by reading from several threads.

Is reading from a file thread safe?

As suggested above, the read code itself is thread safe, but the iterator method should not be public.

How is multithreading possible?

In a multithreaded process on a single processor, the processor can switch execution resources between threads, resulting in concurrent execution. The switching between threads happens quickly enough that the threads might appear to run simultaneously.

Can multiple Python processes writing to same file?

It seems safe to have multiple Python programs writing to the same file. The programs do not wait, according to the fact that the terminal printing interleaves. There might be some buffering mechanism inside that controls the file writing process to keep things in order.

Is Python open thread safe?

Look at the Queue class, it is thread safe. Queue will accept any python object, so if you’re trying to do something other than print to a file, just store the objects from the worker threads via Queue.

How do I read multiple threads from a file?

Using more than one thread to read a file is usually a really bad idea….As per my understanding, we have below options:

1. Read each file line by line sequentially.
2. Read files in parallel in different threads line by line.
3. Read each file using buffers sequentially.
4. Read files in parallel using buffers in different threads.