shared_memory=multiprocessing.shared_memory.SharedMemory(create=True,size=1024)size=shared_memory.sizeprint("SharedMemory size:",size) 1. 2. 3. 4. 5. 在上述代码中,我们首先导入了multiprocessing模块,然后使用SharedMemory类创建了一个大小为
shared_mem = SharedMemory(create=True, size=100)2.共享内存是无锁的,多进程数据同步问题需要自行加锁处理3.共享内存可以命名,在整个计算机中,命名必须唯一。通过name命名,以便多个进程访问同一块内存区域。# 创建命名共享内存shared_mem = SharedMemory(create=True, size=100, name='test_memory')# ...
size=size)returnshmdefwrite_to_shared_memory(shm,data):# 将数据写入共享内存shm.buf[:len(data)]=datadefread_from_shared_memory(shm,size):returnbytes(shm.buf[:size])defmain():size=10data=bytes(range(1,size+1))# 创建共享内存shm
(4)) raw_shm = smm.SharedMemory(size=128) another_sl = smm.ShareableList('alpha') smm.shutdown() # 统一释放内存 def memory_manage_2(*args): def do_work(): print(*args) with SharedMemoryManager() as smm: sl = smm.ShareableList(range(2000)) a = shared_memory.ShareableList(...
import multiprocessing as mp import numpy as np # 创建一个共享内存块 shm_size = 1024 # 共享内存的大小(字节) shm_a = mp.shared_memory.create(name='my_shared_memory', size=shm_size) # 将共享内存映射为一个NumPy数组(假设我们存储的是整数) dtype = np.int32 shape = (shm_size // np.dt...
1、使用shared_memory.SharedMemory创建一个共享内存区域，需要指定大小，会自动生成共享内存的name属性。结合SharedMemory对象的初始化方法，可以看出，创建一个新的共享内存区域时，需要指定create为True，并同时指定size大小。在子进程链接一个已经存在的共享内存时，则只需要指定name属性即可。2、共享内存区域是无结构的...
create=True, size=len(data)) # 将字节流写入共享内存 memory_view = memoryview(shm.buf) memory...
with SharedMemoryManager() as smm:#Create a shared memory of size np_arry.nbytesshm =smm.SharedMemory(np_array.nbytes)#Create a np.recarray using the buffer of shmshm_np_array = np.recarray(shape=shape, dtype=dtype, buf=shm.buf)#Copy the data into the shared memorynp.copyto(shm_np...
shared_memory = mp.SharedMemory("shared_memory", size=100) # 在子进程中访问共享内存 def child(shared_memory): shared_memory.append("Hello, shared memory!") # 启动子进程 p = mp.Process(target=child, args=(shared_memory,)) p.start() p.join() # 在主进程中访问共享内存 print(shared_me...
class SharedMemoryObj: def __init__(self, name='shm_0', size=1024): try: self.shm = shared_memory.SharedMemory(name=name, create=True, size=size) # 尝试创建共享内存,若失败则映射同名内存空间 except: self.shm = shared_memory.SharedMemory(name=name, create=False) ...