252 Commits

Author	SHA1	Message	Date
Gleb Koval	c0ff53beff	feat: proper cleanup for shared pages	2024-12-04 12:27:39 +00:00
Gleb Koval	f2aba977b4	fix: extract supplemental and shared_files initialisation	2024-12-04 11:17:46 +00:00
Gleb Koval	10bfffc4b0	fix: clear shared pages to avoid freeing them	2024-12-04 11:03:35 +00:00
Gleb Koval	6218b5e80d	fix: invert result of file_compare for shared_file_less	2024-11-30 11:49:19 +00:00
sBubshait	dca773addc	Update Exception To Debug Shared files, w/ G	2024-11-30 03:00:17 +00:00
sBubshait	0b08893aaf	Update page_load to create and use the shared read-only pages of executables, w/ G	2024-11-30 01:54:10 +00:00
sBubshait	f4910bdefb	Initialised shared_files global hash table, w/ G	2024-11-30 01:23:33 +00:00
sBubshait	ba72345f96	Add data structures for shared executable files along with helper methods for them, w/ G	2024-11-30 01:15:50 +00:00
sBubshait	8047c65227	Update syscall handling of invalid pointers by preloading pages using the helper try_fetch_page	2024-11-29 18:55:28 +00:00
sBubshait	d047a3c242	Update Userprog Makefile to include vm files	2024-11-29 18:49:26 +00:00
sBubshait	c8b93c57ee	Fix: Update writability of the last page after loading as a workaround to calculating the offset, w/ G	2024-11-29 15:45:44 +00:00
sBubshait	92d0b68243	Fix: Avoid closing the file after loading segments to be able to lazily load from file without opening, w/ G	2024-11-29 14:32:55 +00:00
sBubshait	801fd7d310	Implement page fault for lazy loading executables, w/ G	2024-11-28 20:03:50 +00:00
sBubshait	df20e0fdfe	Update load_segment to load only the metadata of the pages to the SPT, w/ G	2024-11-28 18:35:49 +00:00
sBubshait	97e6e0fb1e	Add SPT Helper Functions: Insert, Get, Cleanup w/ G	2024-11-28 18:18:52 +00:00
sBubshait	14fc96febf	Implement Supplemental Page Table (SPT) per thread along with structure for its entries, w/ G	2024-11-28 17:54:15 +00:00
Themis Demetriades	1e6b90da0d	Implement skeleton for swapping frames into disk	2024-11-26 18:59:46 +00:00
Themis Demetriades	ea2725f606	feat: implement frame table without thread safety	2024-11-26 15:17:11 +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
Gleb Koval	e7cb16b301	Fix child_results loop accessing next after free()	2024-11-13 18:29:05 +00:00
sBubshait	9549ca28e5	Refactor syscall: Use EXIT_FAILURE instead of magic numbers & close files on failure	2024-11-13 18:18:41 +00:00
sBubshait	b1c5819469	Avoid masking the struct syscall_arguments using typedef for consistency	2024-11-13 18:06:51 +00:00
sBubshait	287130ca7b	Update syscall.c to use syscall_exit on failure instead of calling thread_exit directly	2024-11-13 18:02:08 +00:00
sBubshait	4f586bb4da	Fix Bug: Free all entries in the fd hashtable when the process exits, w/ E	2024-11-13 17:42:25 +00:00
sBubshait	d890c2353e	Add constant MAX_SYSCALL_ARGS to avoid magic numbers [Gleb]	2024-11-13 17:16:15 +00:00
sBubshait	eb4f23c290	Add validate_user_string helper function to validate that a string is fully conatined within user vm	2024-11-13 17:11:37 +00:00