nginx: src/os/unix/ngx_alloc.c annotate

annotate src/os/unix/ngx_alloc.c @ 7668:0a04e5e4c40b

Large block sizes on Linux are now ignored (ticket #1168). NFS on Linux is known to report wsize as a block size (in both f_bsize and f_frsize, both in statfs() and statvfs()). On the other hand, typical file system block sizes on Linux (ext2/ext3/ext4, XFS) are limited to pagesize. (With FAT, block sizes can be at least up to 512k in extreme cases, but this doesn't really matter, see below.) To avoid too aggressive cache clearing on NFS volumes on Linux, block sizes larger than pagesize are now ignored. Note that it is safe to ignore large block sizes. Since 3899:e7cd13b7f759 (1.0.1) cache size is calculated based on fstat() st_blocks, and rounding to file system block size is preserved mostly for Windows. Note well that on other OSes valid block sizes seen are at least up to 65536. In particular, UFS on FreeBSD is known to work well with block and fragment sizes set to 65536.

author	Maxim Dounin <mdounin@mdounin.ru>
date	Mon, 22 Jun 2020 18:02:58 +0300
parents	d620f497c50f
children

rev	line source
441 da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 347 diff changeset	1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 347 diff changeset	2 /*
444 42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright Igor Sysoev <igor@sysoev.ru> parents: 441 diff changeset	3 * Copyright (C) Igor Sysoev
4412 d620f497c50f Copyright updated. Maxim Konovalov <maxim@nginx.com> parents: 3343 diff changeset	4 * Copyright (C) Nginx, Inc.
441 da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 347 diff changeset	5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files Igor Sysoev <igor@sysoev.ru> parents: 347 diff changeset	6
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	7
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	8 #include <ngx_config.h>
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	9 #include <ngx_core.h>
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	10
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	11
860 201d017ea470 slab allocator in shared memory Igor Sysoev <igor@sysoev.ru> parents: 589 diff changeset	12 ngx_uint_t ngx_pagesize;
201d017ea470 slab allocator in shared memory Igor Sysoev <igor@sysoev.ru> parents: 589 diff changeset	13 ngx_uint_t ngx_pagesize_shift;
589 d4e858a5751a nginx-0.3.16-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 501 diff changeset	14 ngx_uint_t ngx_cacheline_size;
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	15
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	16
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	17 void *
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	18 ngx_alloc(size_t size, ngx_log_t *log)
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	19 {
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	20 void *p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	21
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	22 p = malloc(size);
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	23 if (p == NULL) {
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	24 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
3321 93e8daca5dbb update allocation error messages Igor Sysoev <igor@sysoev.ru> parents: 3320 diff changeset	25 "malloc(%uz) failed", size);
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	26 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	27
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	28 ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, log, 0, "malloc: %p:%uz", p, size);
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	29
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	30 return p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	31 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	32
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	33
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	34 void *
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	35 ngx_calloc(size_t size, ngx_log_t *log)
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	36 {
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	37 void *p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	38
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	39 p = ngx_alloc(size, log);
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	40
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	41 if (p) {
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	42 ngx_memzero(p, size);
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	43 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	44
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	45 return p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	46 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	47
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	48
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	49 #if (NGX_HAVE_POSIX_MEMALIGN)
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	50
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	51 void *
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	52 ngx_memalign(size_t alignment, size_t size, ngx_log_t *log)
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	53 {
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	54 void *p;
3320 d4ad1b0b6c8d fix posix_memalign() error handling Igor Sysoev <igor@sysoev.ru> parents: 860 diff changeset	55 int err;
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	56
3320 d4ad1b0b6c8d fix posix_memalign() error handling Igor Sysoev <igor@sysoev.ru> parents: 860 diff changeset	57 err = posix_memalign(&p, alignment, size);
d4ad1b0b6c8d fix posix_memalign() error handling Igor Sysoev <igor@sysoev.ru> parents: 860 diff changeset	58
d4ad1b0b6c8d fix posix_memalign() error handling Igor Sysoev <igor@sysoev.ru> parents: 860 diff changeset	59 if (err) {
d4ad1b0b6c8d fix posix_memalign() error handling Igor Sysoev <igor@sysoev.ru> parents: 860 diff changeset	60 ngx_log_error(NGX_LOG_EMERG, log, err,
3321 93e8daca5dbb update allocation error messages Igor Sysoev <igor@sysoev.ru> parents: 3320 diff changeset	61 "posix_memalign(%uz, %uz) failed", alignment, size);
3320 d4ad1b0b6c8d fix posix_memalign() error handling Igor Sysoev <igor@sysoev.ru> parents: 860 diff changeset	62 p = NULL;
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	63 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	64
3343 3051e512e301 fix building without --with-debug, introduced in r3328 Igor Sysoev <igor@sysoev.ru> parents: 3327 diff changeset	65 ngx_log_debug3(NGX_LOG_DEBUG_ALLOC, log, 0,
3327 f67635893ed8 add alignment in debug log Igor Sysoev <igor@sysoev.ru> parents: 3321 diff changeset	66 "posix_memalign: %p:%uz @%uz", p, size, alignment);
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	67
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	68 return p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	69 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	70
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	71 #elif (NGX_HAVE_MEMALIGN)
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	72
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	73 void *
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	74 ngx_memalign(size_t alignment, size_t size, ngx_log_t *log)
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	75 {
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	76 void *p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	77
501 d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	78 p = memalign(alignment, size);
d4ea69372b94 nginx-0.1.25-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 469 diff changeset	79 if (p == NULL) {
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	80 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
3321 93e8daca5dbb update allocation error messages Igor Sysoev <igor@sysoev.ru> parents: 3320 diff changeset	81 "memalign(%uz, %uz) failed", alignment, size);
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	82 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	83
3343 3051e512e301 fix building without --with-debug, introduced in r3328 Igor Sysoev <igor@sysoev.ru> parents: 3327 diff changeset	84 ngx_log_debug3(NGX_LOG_DEBUG_ALLOC, log, 0,
3327 f67635893ed8 add alignment in debug log Igor Sysoev <igor@sysoev.ru> parents: 3321 diff changeset	85 "memalign: %p:%uz @%uz", p, size, alignment);
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	86
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	87 return p;
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	88 }
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	89
55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	90 #endif

Mercurial > hg > nginx

annotate src/os/unix/ngx_alloc.c @ 7668:0a04e5e4c40b