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关于gcc的stack size

2017年10月31日 ⁄ 综合 ⁄ 共 2184字 ⁄ 字号 评论关闭
This file gives some hints on addressing this problem on different platforms.

Under Unix-like systems, programs may throw a "Segmentation Fault"
error.  This can be due to stack overflow, especially from recursive 
function calls or huge data sets.  In our demo program "Pi"
(see "$(CORE_PATH)/progs/pi"), we compute Pi to any number of desired
bits or digits.  Here are some test results on when stack overflows
will occur on different platforms, using their default stack sizes.  

	platform	default size	# bits	# digits
        ===============================================================
	SunOS/Solaris	8172K bytes	<=39875	<=12003	(Shared Version)
	Linux 		8172K bytes	<=62407	<=18786
	Windows		1024K bytes	<=10581	<=3185	(Release Version)
	cygwin		2048K bytes	<=3630	<=1092
	
If we now change their stack size to their maximum, our Pi program can 
compute more bits. 

	platform	stack size	# bits		# digits
        ===============================================================
	SunOS/Solaris	unlimited	>=100,000	30102
	Linux		8172K bytes	<=33,219,282	<=10,000,000(?)
	Windows		32768K bytes	<=343077	<=12041
	
How to change the default stack size on different platforms:
In general, under Unix-like platforms, the stack size is controlled 
by environment variable, not the program itself.  
So you cannot pass any flags to the 
compilers, like gcc, to setup stack size.  Under Windows platforms, the
stack size information is contained in the executable files.  It can be set 
during compilation in Visual C++, but this is not available in gcc. 
Alternatively, Microsoft provides a program "editbin.exe" which can change the
executable files directly.  Here are more details:

SunOS/Solaris:
==============
	> limit			 # shows the current stack size
	> unlimit		 # changes the stack size to unlimited
	> setenv STACKSIZE 32768 # limits the stack size to 32M bytes

Linux:
======
	> ulimit -a		# shows the current stack size
	> ulimit -s 32768	# sets the stack size to 32M bytes

Windows (during compilation):
=============================
	1. Select "Project->Setting".
	2. Select "Link" page.
	3. Select "Category" to "Output".
	4. Type your preferred stack size in "Reserve:" field under "Stack 
	   allocations". eg, 32768 in decimal or 0x20000 in hexadecimal.

Windows (to modify the executable file):
=======================================
There are two programs included in Microsoft Visual Studio, "dumpbin.exe"
 and "editbin.exe".  Run "dumpbin /headers executable_file", and you can see 
the "size of stack reserve" information in "optional header values".  Run 
"editbin /STACK:size" to change the default stack size.

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