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Patch #627105: Document that SYSTEM_PAGE_SIZE really should not be 

larger than the system page size.
This commit is contained in:
Martin v. Löwis 2002-10-26 15:01:53 +00:00
parent 74b51ac1e5
commit 8c1402869b
1 changed files with 4 additions and 1 deletions
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5
Objects/obmalloc.c
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@ -139,7 +139,10 @@
* getpagesize() call or deduced from various header files. To make
* things simpler, we assume that it is 4K, which is OK for most systems.
* It is probably better if this is the native page size, but it doesn't
* have to be.
* have to be. In theory, if SYSTEM_PAGE_SIZE is larger than the native page
* size, then `POOL_ADDR(p)->arenaindex' could rarely cause a segmentation
* violation fault. 4K is apparently OK for all the platforms that python
* currently targets.
*/
#define SYSTEM_PAGE_SIZE (4 * 1024)
#define SYSTEM_PAGE_SIZE_MASK (SYSTEM_PAGE_SIZE - 1)