[Plugin] PAWN memory access plugin - SA-MP Forums

BigETI · 21/11/2017, 01:38 PM

PAWN memory access plugin
A successor to http://forum.sa-mp.com/showthread.php?t=451381

Description
The PAWN memory access plugin allows to allocate and free memory from heap in PAWN.

Project
All of the source code, builds and documentations are located at GitHub: https://github.com/BigETI/pawn-memory

StrikerZ · 21/11/2017, 02:52 PM

Good job! It'll be useful

IlanZ · 21/11/2017, 05:19 PM

Nice job.

TommyB · 21/11/2017, 05:26 PM

10/10 best plugin ever used.

DimaShift · 21/11/2017, 06:02 PM

nice plugin! ++

Kaperstone · 21/11/2017, 07:26 PM

I have weak knowledge in c, can it be explained what is the difference between managed and unmanaged if (anyway) I need to delete both of them to prevent memory leak?

BigETI · 22/11/2017, 05:53 AM

The concept of managed and unmanaged memory is not from C. Allocating managed memory in this context stores extra information such as the validity of a pointer and the size of the allocated block of memory. These information are used on calls to validate input, also on plugin unload all "managed" blocks of memory are freed back to the underlying system. Allocating unmanaged memory in this context doesn't really hold the information of the validity of a pointer, neither the size of the allocated block of memory. This concludes that the operations are faster, but they're prone to get misused by programmers, which then can mess up the working virtual memory space by using invalid pointers or overwriting blocks of memory that were not allocated, or used by different program code. Also "unmanaged" memory is not explicitly freed at plugin unload. The counterpart of MEM_new* and MEM_clone is MEM_delete, where the counterpart of MEM_UM_new* and MEM_UM_clone is MEM_UM_delete.

Whitetiger · 23/11/2017, 05:49 AM

What's the advantage of this over your old plugin? Why would I wanna allocate memory on the PAWN heap when I can do the same thing without messing with PAWN's heap in your other plugin?

BigETI · 23/11/2017, 12:44 PM

Memory is not allocated on PAWN heap memory. It is allocated on the application's heap memory.

DavidZvla · 27/02/2018, 02:29 AM

How i get the .dll or .so file? or how can i setup this plugin?

Code:

[debug] Run time error 19: "File or function is not found"
[debug]  MEM_get_val
[debug]  MEM_get_size
[debug]  MEM_get_arr
[debug]  MEM_delete
[debug]  MEM_new_arr
[debug]  MEM_set_val
[debug] Run time error 19: "File or function is not found"
[debug]  MEM_get_val
[debug]  MEM_get_size
[debug]  MEM_get_arr
[debug]  MEM_delete
[debug]  MEM_new_arr
[debug]  MEM_set_val

21/11/2017, 01:38 PM	#1
BigETI High-roller Join Date: Mar 2010 Location: Germany Posts: 1,064 Reputation: 356	PAWN memory access plugin PAWN memory access plugin A successor to http://forum.sa-mp.com/showthread.php?t=451381 Description The PAWN memory access plugin allows to allocate and free memory from heap in PAWN. Project All of the source code, builds and documentations are located at GitHub: https://github.com/BigETI/pawn-memory __________________

21/11/2017, 02:52 PM	#2
StrikerZ High-roller Join Date: Mar 2016 Location: Vikendi Posts: 1,103 Reputation: 154	Re: PAWN memory access plugin Good job! It'll be useful __________________ Click me to see my work

21/11/2017, 05:19 PM	#3
IlanZ High-roller Join Date: Jul 2016 Location: Brasil Posts: 1,361 Reputation: 75	Re: PAWN memory access plugin Nice job.

21/11/2017, 05:26 PM	#4
TommyB Beta Tester Join Date: Sep 2010 Location: Texas, USA. Posts: 204 Reputation: 165	Re: PAWN memory access plugin 10/10 best plugin ever used. __________________

21/11/2017, 06:02 PM	#5
DimaShift Banned Join Date: May 2017 Location: Republic of Moldova Posts: 123 Reputation: 43	Re: PAWN memory access plugin nice plugin! ++

21/11/2017, 07:26 PM	#6
Kaperstone Banned Join Date: May 2011 Location: Russia Posts: 3,334 Reputation: 824	Re: PAWN memory access plugin I have weak knowledge in c, can it be explained what is the difference between managed and unmanaged if (anyway) I need to delete both of them to prevent memory leak?

22/11/2017, 05:53 AM	#7
BigETI High-roller Join Date: Mar 2010 Location: Germany Posts: 1,064 Reputation: 356	Re: PAWN memory access plugin The concept of managed and unmanaged memory is not from C. Allocating managed memory in this context stores extra information such as the validity of a pointer and the size of the allocated block of memory. These information are used on calls to validate input, also on plugin unload all "managed" blocks of memory are freed back to the underlying system. Allocating unmanaged memory in this context doesn't really hold the information of the validity of a pointer, neither the size of the allocated block of memory. This concludes that the operations are faster, but they're prone to get misused by programmers, which then can mess up the working virtual memory space by using invalid pointers or overwriting blocks of memory that were not allocated, or used by different program code. Also "unmanaged" memory is not explicitly freed at plugin unload. The counterpart of MEM_new* and MEM_clone is MEM_delete, where the counterpart of MEM_UM_new* and MEM_UM_clone is MEM_UM_delete. __________________ Last edited by BigETI; 22/11/2017 at 12:51 PM.

23/11/2017, 05:49 AM	#8
Whitetiger Huge Clucker Join Date: Nov 2007 Location: Greenville, NC, USA Posts: 473 Reputation: 156	Re: PAWN memory access plugin What's the advantage of this over your old plugin? Why would I wanna allocate memory on the PAWN heap when I can do the same thing without messing with PAWN's heap in your other plugin? __________________ GitHub Author of SA-MP AC

23/11/2017, 12:44 PM	#9
BigETI High-roller Join Date: Mar 2010 Location: Germany Posts: 1,064 Reputation: 356	Re: PAWN memory access plugin Memory is not allocated on PAWN heap memory. It is allocated on the application's heap memory. __________________

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