aboutsummaryrefslogtreecommitdiffstats
path: root/app/nginx/src/core/ngx_rwlock.c
diff options
context:
space:
mode:
authorBen Magistro <koncept1@gmail.com>2022-04-17 09:45:02 -0400
committerBen Magistro <koncept1@gmail.com>2022-04-20 21:30:13 -0400
commitbf8c01bfcd015d43cfbcb893e48c6a83a95c91ec (patch)
treed4871f553a40aaed8cf98165f1e4f07584cfb95e /app/nginx/src/core/ngx_rwlock.c
parent862937c477a3d90798a5e4c4e84fc7c79aae52fe (diff)
Drop nginxdev-mitm-proxy
Nginx is not part of the core library being developed and needs to be moved to its own repository to allow it to be more easily maintained. Signed-off-by: Ben Magistro <koncept1@gmail.com> Change-Id: I5639e84ba0564ccd49ffcffa7ec9fcd57827bd6d
Diffstat (limited to 'app/nginx/src/core/ngx_rwlock.c')
-rw-r--r--app/nginx/src/core/ngx_rwlock.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/app/nginx/src/core/ngx_rwlock.c b/app/nginx/src/core/ngx_rwlock.c
deleted file mode 100644
index 905de78..0000000
--- a/app/nginx/src/core/ngx_rwlock.c
+++ /dev/null
@@ -1,120 +0,0 @@
-
-/*
- * Copyright (C) Ruslan Ermilov
- * Copyright (C) Nginx, Inc.
- */
-
-
-#include <ngx_config.h>
-#include <ngx_core.h>
-
-
-#if (NGX_HAVE_ATOMIC_OPS)
-
-
-#define NGX_RWLOCK_SPIN 2048
-#define NGX_RWLOCK_WLOCK ((ngx_atomic_uint_t) -1)
-
-
-void
-ngx_rwlock_wlock(ngx_atomic_t *lock)
-{
- ngx_uint_t i, n;
-
- for ( ;; ) {
-
- if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, NGX_RWLOCK_WLOCK)) {
- return;
- }
-
- if (ngx_ncpu > 1) {
-
- for (n = 1; n < NGX_RWLOCK_SPIN; n <<= 1) {
-
- for (i = 0; i < n; i++) {
- ngx_cpu_pause();
- }
-
- if (*lock == 0
- && ngx_atomic_cmp_set(lock, 0, NGX_RWLOCK_WLOCK))
- {
- return;
- }
- }
- }
-
- ngx_sched_yield();
- }
-}
-
-
-void
-ngx_rwlock_rlock(ngx_atomic_t *lock)
-{
- ngx_uint_t i, n;
- ngx_atomic_uint_t readers;
-
- for ( ;; ) {
- readers = *lock;
-
- if (readers != NGX_RWLOCK_WLOCK
- && ngx_atomic_cmp_set(lock, readers, readers + 1))
- {
- return;
- }
-
- if (ngx_ncpu > 1) {
-
- for (n = 1; n < NGX_RWLOCK_SPIN; n <<= 1) {
-
- for (i = 0; i < n; i++) {
- ngx_cpu_pause();
- }
-
- readers = *lock;
-
- if (readers != NGX_RWLOCK_WLOCK
- && ngx_atomic_cmp_set(lock, readers, readers + 1))
- {
- return;
- }
- }
- }
-
- ngx_sched_yield();
- }
-}
-
-
-void
-ngx_rwlock_unlock(ngx_atomic_t *lock)
-{
- ngx_atomic_uint_t readers;
-
- readers = *lock;
-
- if (readers == NGX_RWLOCK_WLOCK) {
- *lock = 0;
- return;
- }
-
- for ( ;; ) {
-
- if (ngx_atomic_cmp_set(lock, readers, readers - 1)) {
- return;
- }
-
- readers = *lock;
- }
-}
-
-
-#else
-
-#if (NGX_HTTP_UPSTREAM_ZONE || NGX_STREAM_UPSTREAM_ZONE)
-
-#error ngx_atomic_cmp_set() is not defined!
-
-#endif
-
-#endif