class simple_allocator(object):
def __init__(self):
self.lock = threading.Lock()
self.size = mmap.PAGESIZE
self.offset = 0
self.buf = SharedMemoryBuffer(self.size)
def _allocate_tiny(self, size):
free = self.size - self.offset
if (size > free):
self.size += mmap.PAGESIZE
if (self.size > 1024**2): self.size = 1024**2
self.buf = SharedMemoryBuffer(self.size)
self.offset = size
addr, _ = self.buf.getbuffer()
return 0, self.buf
else:
offset = self.offset
self.offset += size
addr, _ = self.buf.getbuffer()
return offset, self.buf
def _allocate_big(self, size):
buf = SharedMemoryBuffer(size)
addr, _ = buf.getbuffer()
return 0, buf
def allocate(self, size):
with self.lock:
if size > mmap.PAGESIZE:
offset, buf = self._allocate_big(size)
else:
offset, buf = self._allocate_tiny(size)
return offset, buf
def _allocate_tiny(self, size):
free = self.size - self.offset
if (size > free):
self.size += mmap.PAGESIZE
if (self.size > 1024**2): self.size = 1024**2
self.buf = SharedMemoryBuffer(self.size)
self.offset = size
addr, _ = self.buf.getbuffer()
return 0, self.buf
else:
offset = self.offset
self.offset += size
addr, _ = self.buf.getbuffer()
return offset, self.buf
def _allocate_tiny(self, size):
free = self.size - self.offset
if (size > free):
self.size += mmap.PAGESIZE
if (self.size > 1024**2): self.size = 1024**2
self.buf = SharedMemoryBuffer(self.size)
self.offset = size
addr, _= self.buf.getbuffer()
return 0, self.buf
else:
offset = self.offset
self.offset += size
addr, _= self.buf.getbuffer()
return offset, self.buf
class simple_allocator(object):
def __init__(self):
self.lock = threading.Lock()
self.size = mmap.PAGESIZE
self.offset = 0
self.buf = SharedMemoryBuffer(self.size)
def _allocate_tiny(self, size):
free = self.size - self.offset
if (size > free):
self.size += mmap.PAGESIZE
if (self.size > 1024**2): self.size = 1024**2
self.buf = SharedMemoryBuffer(self.size)
self.offset = size
addr, _= self.buf.getbuffer()
return 0, self.buf
else:
offset = self.offset
self.offset += size
addr, _= self.buf.getbuffer()
return offset, self.buf
def _allocate_big(self, size):
buf = SharedMemoryBuffer(size)
addr, _ = buf.getbuffer()
return 0, buf
def allocate(self, size):
with self.lock:
if size > mmap.PAGESIZE:
offset, buf = self._allocate_big(size)
else:
offset, buf = self._allocate_tiny(size)
return offset, buf
def _allocate_big(self, size):
buf = SharedMemoryBuffer(size)
addr, _ = buf.getbuffer()
return 0, buf
def __init__(self):
self.lock = threading.Lock()
self.size = mmap.PAGESIZE
self.offset = 0
self.buf = SharedMemoryBuffer(self.size)
def _allocate_big(self, size):
buf = SharedMemoryBuffer(size)
addr, _ = buf.getbuffer()
return 0, buf
def __init__(self):
self.lock = threading.Lock()
self.size = mmap.PAGESIZE
self.offset = 0
self.buf = SharedMemoryBuffer(self.size)