264 Commits

Author	SHA1	Message	Date
Themis Demetriades	1b73e415d7	fix: invalidate PTEs of evicted pages before eviction occurs to prevent modificationof pages mid-eviction	2024-12-04 15:02:49 +00:00
Themis Demetriades	47a7dfae04	refactor: add comments describing each type of page fault dealt by the page fault handler	2024-12-03 21:47:59 +00:00
EDiasAlberto	9a3c8a1c38	fix: grow stack upon page fault in kernel context to support syscall stack growth	2024-12-03 20:56:10 +00:00
Themis Demetriades	08eafcf7ef	feat: implement page swapping	2024-12-03 16:53:47 +00:00
Themis Demetriades	df7d847978	fix: remove stack fault checks for page faults outside user non-present addresses	2024-12-02 21:07:17 +00:00
Themis Demetriades	6190d1bee6	fix: disable dynamic stack growth when VM flag is disabled	2024-12-02 20:44:54 +00:00
Themis Demetriades	6adf2e743b	refactor: dynamic stack growth functions to follow code style	2024-12-02 19:50:40 +00:00
Themis Demetriades	05a48cf9c6	refactor: page fault exception handler follows code style	2024-12-01 23:36:55 +00:00
Themis Demetriades	bb16abdc0d	refactor: supplemental page table helper functions follow code style	2024-12-01 23:30:50 +00:00
Demetriades, Themis	9d35beb2e4	Merge branch 'virtual-memory' into 'page-swap-helpers' ... # Conflicts: # src/vm/frame.c # src/vm/page.c	2024-12-01 21:44:17 +00:00
Themis Demetriades	7ce512305e	fix: remove DVM flag when compiling outside of vm directory	2024-12-01 00:41:09 +00:00
Demetriades, Themis	d8edc6d3fe	Merge branch 'virtual-memory' into 'ethan-stack-growth' ... # Conflicts: # src/Makefile.build	2024-11-30 23:21:16 +00:00
Themis Demetriades	6f85d7642d	feat: implement clock (second-chance) page eviction algorithm	2024-11-30 22:40:13 +00:00
EDiasAlberto	94adc11f03	Feat: implement page_get_swap and page_set_swap functions	2024-11-30 03:21:34 +00:00
EDiasAlberto	40c553d68b	Merge stack growth functions	2024-11-30 01:54:28 +00:00
EDiasAlberto	13de832586	Refactor stack growth code to remove messy conditions	2024-11-29 23:52:05 +00:00
EDiasAlberto	5c661c2e24	Feat: pointer validation checks string across multiple pages and handle kernel page faults	2024-11-29 23:49:49 +00:00
EDiasAlberto	5f40d83e66	Implement MMU-based user memory validation	2024-11-29 23:03:31 +00:00
Themis Demetriades	149bb42889	feat: implement clock (second-chance) page eviction algorithm	2024-11-29 19:30:47 +00:00
EDiasAlberto	4f84a83611	Refactor: abstract new page allocation to one general function and make helper functions static	2024-11-27 19:41:22 +00:00
EDiasAlberto	c74a8c55aa	Implement stack growth for system calls and add stack pointer tracking to thread	2024-11-27 19:21:43 +00:00
EDiasAlberto	c670c29e47	update stack growth header to fit virtual memory naming format	2024-11-27 18:57:20 +00:00
Themis Demetriades	ea2725f606	feat: implement frame table without thread safety	2024-11-26 15:17:11 +00:00
EDiasAlberto	af7f2ba873	Fix: Magic number in stackgrowth.c	2024-11-26 04:54:00 +00:00
EDiasAlberto	3ef5264b6e	feat: allow stack to grow for process up to 8MB in size	2024-11-26 04:43:25 +00:00
Gleb Koval	aedb72246b	fix: do not acquire filesys_lock for tell and seek	2024-11-24 15:41:18 +00:00
Gleb Koval	e1f0258f8e	fix: handle malloc result in init_process_result	2024-11-24 15:09:32 +00:00
Gleb Koval	8567434231	Use a single exit_status instead of two	2024-11-15 17:28:04 +00:00
sBubshait	8f82f9d747	Fix Bug in fd_counter initialisation when USERPROG is not defined	2024-11-15 16:57:16 +00:00
Gleb Koval	2566948a32	Implement hash table for child process results	2024-11-15 16:45:04 +00:00
sBubshait	ea3b3594ea	Update fd_hash to use the fd itself as the hash value for performance, w/ G & E	2024-11-15 15:53:01 +00:00
sBubshait	6b1dbdd34f	Update thread and syscall to use local fd counter instead global one, preventing overflow	2024-11-15 15:48:56 +00:00
sBubshait	7daf4fb079	Refactor process_exit to add more comments for readability	2024-11-15 15:35:07 +00:00
sBubshait	a7f1d519da	Refactor process_wait to add more comments and improve readability	2024-11-15 15:09:24 +00:00
sBubshait	0f1bce2e88	Refactor process_init_stack to add asserts and comments	2024-11-15 14:52:21 +00:00
sBubshait	f4c900e56c	Refactor process.c for comments, clarity and readability	2024-11-15 14:37:38 +00:00
sBubshait	82d45880f7	Update validate_user_pointer to start from the beginning of the page rather than the given ptr	2024-11-15 13:51:10 +00:00
sBubshait	1c757ecdfe	Update syscall to add more helpful comments for clarity and readability	2024-11-15 13:51:10 +00:00
sBubshait	6a1d10a19b	Refactor synch to follow PintOS curly braces indentation style in if statements	2024-11-15 13:51:10 +00:00
Themis Demetriades	7947ac78e8	Remove args-ovf user program binary, replacing with source for testing	2024-11-15 13:40:21 +00:00
Themis Demetriades	eff0837fdc	Update stack initialization code to handle all possible overflows and implement a user program to test this	2024-11-15 13:35:58 +00:00
Themis Demetriades	5e2e7199f2	Fix memory leak in start_process	2024-11-14 21:03:55 +00:00
Themis Demetriades	e4036c715f	Refactor start_process to hold file system lock for less time	2024-11-14 16:05:15 +00:00
Themis Demetriades	3a46e0f73a	Update user proc stack initialization comments to be more helpful	2024-11-14 15:54:34 +00:00
Themis Demetriades	8821851459	Refactor process_execute to remove use of 'goto'	2024-11-14 14:42:26 +00:00
Themis Demetriades	1a2ff35231	Refactor process_execute to pass process start data as a local reference rather than perform memory allocation on the heap	2024-11-14 14:32:48 +00:00
Gleb Koval	f5e498e0a9	explicit thread_exit () when process_start () fails	2024-11-13 21:58:41 +00:00
Gleb Koval	d02b956221	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	2024-11-13 19:20:19 +00:00
sBubshait	fa2fb4a711	Refactor system call comments for accuracy and grammar	2024-11-13 18:48:23 +00:00
sBubshait	31ea215805	Refactor validate_user_string to remove unnecessary variable to track length of str	2024-11-13 18:30:24 +00:00