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heaps.py @ 7a415d4

4.104.115

Last change on this file since 7a415d4 was b9ee5df, checked in by Dhananjay Balan <mb.dhananjay@…>, on 07/28/13 at 09:15:58

Add region support.

Abstractions for classic/region added.

File size: 1.6 KB

Line
1	#
2	# RTEMS heap
3	#
4
5	class block:
6	'''Abstract a heap block structure'''
7
8	def __init__(self, blk):
9	self.block = blk
10	self.prev_size = self.block['prev_size']
11	self.size_flag = self.block['size_and_flag']
12
13	def null(self):
14	if self.block:
15	return False
16	return True
17
18	def val(self):
19	return str(self.block)
20
21	def next(self):
22	if not self.null():
23	self.block = self.block['next']
24
25	def prev(self):
26	if not self.null():
27	self.block = self.block['prev']
28
29	class stats:
30	'''heap statistics'''
31
32	def __init__(self,stat):
33	self.stat = stat
34
35	def inst(self):
36	i = self.stat['instance']
37	return i
38
39	def avail(self):
40	val = self.stat['size']
41	return val
42
43	def free(self):
44	return self.stat['free_size']
45
46	def show(self):
47	print ' Instance:',self.inst()
48	print ' Avail:',self.avail()
49	print ' Free:',self.free()
50
51	# ToDo : incorporate others
52
53	class control:
54	'''Abstract a heap control structure'''
55
56	def __init__(self, ctl):
57	self.ctl = ctl
58
59	def first(self):
60	b = block(self.ctl['first_block'])
61	return b
62
63	def last(self):
64	b = block(self.ctl['last_block'])
65	return b
66
67	def free(self):
68	b = block(self.ctl['free_list'])
69	return b
70
71	def stat(self):
72	st = stats(self.ctl['stats'])
73	return st
74
75	def show(self):
76	fi = self.first()
77	la = self.last()
78
79	print ' First:', fi.val()
80	print ' Last:', la.val()
81
82	stats = self.stat()
83	print ' stats:'
84	stats.show()

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