how is a thread diffferent from a process
时间: 2024-06-03 22:13:11 浏览: 9
A process is an executing instance of a program, while a thread is a separate path of execution within a process. In other words, a process can have one or more threads. Each thread within a process shares the same memory and resources, but has its own stack and program counter, which allows it to run independently and concurrently with other threads within the same process.
Processes are typically heavier weight and require more system resources than threads, since each process has its own memory space, file descriptors, and other resources. Threads, on the other hand, are often used for lightweight tasks such as handling user input or updating a progress bar, where you want to keep the application responsive without blocking the main thread.
In summary, processes are independent executing instances of a program, while threads are independent paths of execution within a process that share the same memory and resources.