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https://git.rtems.org/rtems-tools/
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62 lines
1.2 KiB
Python
62 lines
1.2 KiB
Python
#
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# RTEMS heap
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#
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class block:
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'''Abstract a heap block structure'''
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def __init__(self, blk):
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self.block = blk
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self.prev_size = self.block['prev_size']
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self.size_flag = self.block['size_and_flag']
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def null(self):
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if self.block:
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return False
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return True
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def next(self):
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if not self.null():
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self.block = self.block['next']
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def prev(self):
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if not self.null():
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self.block = self.block['prev']
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class stats:
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''heap statistics''
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def __init__(self,stat):
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self.stat = stat
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def avail(self):
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val = self.stat['size']
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return val
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def free(self):
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return self.stat['free_size']
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# ToDo : incorporate others
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def control:
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'''Abstract a heap control structure'''
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def __init__(self, ctl):
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self.ctl = ctl
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def first(self):
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b = block(self.ctl['first_block'])
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return b
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def last(self):
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b = block(self.ctl['last_block'])
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return b
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def free(self):
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b = block(self.ctl['free_list'])
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return b
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def stat(self):
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st = stats(self.ctl['stats'])
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return st |