Themis Demetriades
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6f85d7642d
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feat: implement clock (second-chance) page eviction algorithm
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2024-11-30 22:40:13 +00:00 |
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Themis Demetriades
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ea2725f606
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feat: implement frame table without thread safety
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2024-11-26 15:17:11 +00:00 |
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aedb72246b
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fix: do not acquire filesys_lock for tell and seek
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2024-11-24 15:41:18 +00:00 |
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e1f0258f8e
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fix: handle malloc result in init_process_result
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2024-11-24 15:09:32 +00:00 |
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8567434231
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Use a single exit_status instead of two
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2024-11-15 17:28:04 +00:00 |
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sBubshait
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8f82f9d747
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Fix Bug in fd_counter initialisation when USERPROG is not defined
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2024-11-15 16:57:16 +00:00 |
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2566948a32
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Implement hash table for child process results
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2024-11-15 16:45:04 +00:00 |
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sBubshait
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ea3b3594ea
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Update fd_hash to use the fd itself as the hash value for performance, w/ G & E
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2024-11-15 15:53:01 +00:00 |
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sBubshait
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6b1dbdd34f
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Update thread and syscall to use local fd counter instead global one, preventing overflow
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2024-11-15 15:48:56 +00:00 |
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sBubshait
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7daf4fb079
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Refactor process_exit to add more comments for readability
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2024-11-15 15:35:07 +00:00 |
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sBubshait
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a7f1d519da
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Refactor process_wait to add more comments and improve readability
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2024-11-15 15:09:24 +00:00 |
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sBubshait
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0f1bce2e88
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Refactor process_init_stack to add asserts and comments
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2024-11-15 14:52:21 +00:00 |
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sBubshait
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f4c900e56c
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Refactor process.c for comments, clarity and readability
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2024-11-15 14:37:38 +00:00 |
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sBubshait
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82d45880f7
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Update validate_user_pointer to start from the beginning of the page rather than the given ptr
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2024-11-15 13:51:10 +00:00 |
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sBubshait
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1c757ecdfe
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Update syscall to add more helpful comments for clarity and readability
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2024-11-15 13:51:10 +00:00 |
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sBubshait
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6a1d10a19b
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Refactor synch to follow PintOS curly braces indentation style in if statements
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2024-11-15 13:51:10 +00:00 |
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Themis Demetriades
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7947ac78e8
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Remove args-ovf user program binary, replacing with source for testing
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2024-11-15 13:40:21 +00:00 |
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Themis Demetriades
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eff0837fdc
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Update stack initialization code to handle all possible overflows and implement a user program to test this
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2024-11-15 13:35:58 +00:00 |
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Themis Demetriades
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5e2e7199f2
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Fix memory leak in start_process
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2024-11-14 21:03:55 +00:00 |
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Themis Demetriades
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e4036c715f
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Refactor start_process to hold file system lock for less time
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2024-11-14 16:05:15 +00:00 |
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Themis Demetriades
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3a46e0f73a
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Update user proc stack initialization comments to be more helpful
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2024-11-14 15:54:34 +00:00 |
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Themis Demetriades
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8821851459
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Refactor process_execute to remove use of 'goto'
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2024-11-14 14:42:26 +00:00 |
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Themis Demetriades
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1a2ff35231
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Refactor process_execute to pass process start data as a local reference rather than perform memory allocation on the heap
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2024-11-14 14:32:48 +00:00 |
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f5e498e0a9
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explicit thread_exit () when process_start () fails
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2024-11-13 21:58:41 +00:00 |
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d02b956221
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Merge branch 'system-calls' into 'userprog-oom'
Add Fixes to Memory Leaks, Memory Access Validation, Synchronised Processes and Refactoring
See merge request lab2425_autumn/pintos_22!38
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2024-11-13 19:20:19 +00:00 |
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sBubshait
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fa2fb4a711
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Refactor system call comments for accuracy and grammar
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2024-11-13 18:48:23 +00:00 |
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sBubshait
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31ea215805
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Refactor validate_user_string to remove unnecessary variable to track length of str
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2024-11-13 18:30:24 +00:00 |
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e7cb16b301
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Fix child_results loop accessing next after free()
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2024-11-13 18:29:05 +00:00 |
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sBubshait
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9549ca28e5
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Refactor syscall: Use EXIT_FAILURE instead of magic numbers & close files on failure
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2024-11-13 18:18:41 +00:00 |
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sBubshait
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b1c5819469
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Avoid masking the struct syscall_arguments using typedef for consistency
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2024-11-13 18:06:51 +00:00 |
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sBubshait
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287130ca7b
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Update syscall.c to use syscall_exit on failure instead of calling thread_exit directly
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2024-11-13 18:02:08 +00:00 |
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sBubshait
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4f586bb4da
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Fix Bug: Free all entries in the fd hashtable when the process exits, w/ E
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2024-11-13 17:42:25 +00:00 |
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sBubshait
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d890c2353e
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Add constant MAX_SYSCALL_ARGS to avoid magic numbers [Gleb]
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2024-11-13 17:16:15 +00:00 |
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sBubshait
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eb4f23c290
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Add validate_user_string helper function to validate that a string is fully conatined within user vm
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2024-11-13 17:11:37 +00:00 |
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sBubshait
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26de38cdba
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Update validate_user_pointer to check if the memory block is mapped into a physical address
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2024-11-13 16:39:45 +00:00 |
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sBubshait
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6e59e8c9f3
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Update validate_user_pointer to be a void function
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2024-11-13 16:22:16 +00:00 |
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sBubshait
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30e49846b5
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Add more tests for system calls to deal with bad buffers given to read and write
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2024-11-13 16:21:12 +00:00 |
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005791edd2
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Synchronise process_execute return with child process load
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2024-11-13 11:05:09 +00:00 |
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8bcd0a467c
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Tidy up a69b9c808e
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2024-11-12 21:35:41 +00:00 |
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dd979f34c8
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Fix syn-read, syn-write, and always free elements from donors_list
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2024-11-12 21:30:23 +00:00 |
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ca9d23edf9
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Always release filesys_lock when checking if file is valid in process_execute
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2024-11-12 20:07:51 +00:00 |
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Themis Demetriades
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d878dbc132
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Fix bug in userprog-merge where file writes were denied in the wrong thread
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2024-11-12 16:22:32 +00:00 |
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Themis Demetriades
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b0400693ae
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Update process_execute to acquire lock when checking if file exists
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2024-11-12 16:12:24 +00:00 |
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Themis Demetriades
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3418425f20
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Don't acquire filesys lock when calling exec
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2024-11-12 16:08:27 +00:00 |
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Themis Demetriades
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a69b9c808e
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Update start_process to acquire filesys lock when loading user process file
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2024-11-12 14:21:33 +00:00 |
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EDiasAlberto
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72afecfbda
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Add validation to check for missing files in exec() args
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2024-11-11 23:10:02 +00:00 |
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Themis Demetriades
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e8713e26c6
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Update variable references between conflicting merges to refer to the same data in stack initialization
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2024-11-11 22:51:19 +00:00 |
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Demetriades, Themis
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47c3657b65
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Merge branch 'process-wait' into 'userprog-merge'
Fix race-condition in process result (memory leak), fix infinite loop in donors_list
See merge request lab2425_autumn/pintos_22!33
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2024-11-11 22:24:39 +00:00 |
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Demetriades, Themis
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4eafdf10ba
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Merge branch 'read-only-exec' into 'userprog-merge'
Combine syscall code with final stack initialization code
See merge request lab2425_autumn/pintos_22!32
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2024-11-11 22:23:20 +00:00 |
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Themis Demetriades
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14a4841772
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Fix bug where size of file name buffer was less than maximum file name size
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2024-11-11 22:13:10 +00:00 |
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