多处理
多处理被定义为计算机系统支持多个进程的能力。支持多处理的操作系统允许多个程序同时运行。
有多种类型的多处理,例如symmetric和asymmetric processing. 下图指的是取证调查中通常遵循的对称多处理系统。
例子
以下代码显示了 Python 编程中如何在内部列出不同的进程。
import random
import multiprocessing
def list_append(count, id, out_list):
#appends the count of number of processes which takes place at a time
for i in range(count):
out_list.append(random.random())
if __name__ == "__main__":
size = 999
procs = 2
# Create a list of jobs and then iterate through
# the number of processes appending each process to
# the job list
jobs = []
for i in range(0, procs):
out_list = list() #list of processes
process1 = multiprocessing.Process(
target = list_append, args = (size, i, out_list))
# appends the list of processes
jobs.append(process)
# Calculate the random number of processes
for j in jobs:
j.start() #initiate the process
# After the processes have finished execution
for j in jobs:
j.join()
print "List processing complete."
这里,函数list_append()有助于列出系统中的一组进程。
输出
我们的代码将产生以下输出 -