mysafe | Unsafe Interceptor , Native Memory Leak Tracker
kandi X-RAY | mysafe Summary
kandi X-RAY | mysafe Summary
MySafe is a framework (based on Jillegal-Agent) for managing memory accesses over sun.misc.Unsafe. MySafe intercepts (instruments) sun.misc.Unsafe calls and keeps records of allocated memories. So it can give the allocated memory informations and detect the invalid memory accesses.
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Top functions reviewed by kandi - BETA
- Instruments the class
- Instruments the reallocation point order
- Instruments an allocation point
- Instruments a free point
- Returns the mapped value for the given key
- Compacts the chain
- Determines whether the memory store contains the given address and size
- Checks if the given memory address contains the given address
- Returns whether or not the given entry exists
- Checks if the given address contains the given address
- Initialize memory management point
- Checks if the given value contains the given value
- Iterate over all allocated memory items
- Allocate memory for a given size
- Removes the thread local allocation point with the given call point ID
- Generate an allocation path
- Create the mock instrumenter
- This method returns all allocated memory allocated memory
- Returns true if all the allocated resources are idle
- Rehashes the cache
- Returns true if all allocated memory storages are idle
- Fill with the given long
- Frees memory
- Rehashes entries
- Instruments a class
- Stores a new call path in memory
mysafe Key Features
mysafe Examples and Code Snippets
Community Discussions
Trending Discussions on mysafe
QUESTION
So we have like this safes challenge in assembly, you need to create safes and keys that will break them and end the infinite loop. Here's an example for a safe:
...ANSWER
Answered 2019-Dec-28 at 18:08The value in dx
used as the counter for the loop
instruction comes from the first mul
instruction.
This multiplication is just doubling the key, so dx
is either 0 or 1 (an easy way to see this is to think of the multiplication as a left shift by one or by remembering that the sum of two n-bit numbers has at most n+1 bits)
If dx
is zero, the whole loopy1
block does nothing (as dx
also sets ax
) and the value in ax
at the end of the safe is 7*(5 +2k) where k is the key (see the commented code below).
It is then easy to see that 350 = 7*(5+2k) => 2k = 45 has no solution. Therefore no key for which dx
is zero can unlock the safe.
A key has dx
0 iif its value is less than 32768 (again, this is easy to see when thinking of the multiplication as a left shift by one).
Corollary: 10 cannot be a solution.
QUESTION
...ANSWER
Answered 2018-Aug-27 at 13:27All propositions are lookahead, it results an empty string, you have to keep one of them as "real":
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