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diff src/core/ngx_shmtx.c @ 160:73e8476f9142 NGINX_0_3_27

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nginx 0.3.27 *) Change: the "variables_hash_max_size" and "variables_hash_bucket_size" directives. *) Feature: the $body_bytes_sent variable can be used not only in the "log_format" directive. *) Feature: the $ssl_protocol and $ssl_cipher variables. *) Feature: the cache line size detection for widespread CPUs at start time. *) Feature: now the "accept_mutex" directive is supported using fcntl(2) on platforms different from i386, amd64, sparc64, and ppc. *) Feature: the "lock_file" directive and the --with-lock-path=PATH autoconfiguration directive. *) Bugfix: if the HTTPS protocol was used in the "proxy_pass" directive then the requests with the body was not transferred.
author Igor Sysoev <http://sysoev.ru>
date Wed, 08 Feb 2006 00:00:00 +0300
parents
children 6ae1357b7b7c
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new file mode 100644
--- /dev/null
+++ b/src/core/ngx_shmtx.c
@@ -0,0 +1,70 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+#if (NGX_HAVE_ATOMIC_OPS)
+
+
+ngx_int_t
+ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name, ngx_log_t *log)
+{
+    mtx->lock = addr;
+
+    return NGX_OK;
+}
+
+#else
+
+
+ngx_int_t
+ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name, ngx_log_t *log)
+{
+    if (mtx->name) {
+
+        if (ngx_strcmp(name, mtx->name) == 0) {
+            mtx->name = name;
+            mtx->log = log;
+
+            return NGX_OK;
+        }
+
+        ngx_shmtx_destory(mtx);
+    }
+
+    mtx->fd = ngx_open_file(name, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN);
+
+    if (mtx->fd == NGX_INVALID_FILE) {
+        ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
+                      ngx_open_file_n " \"%s\" failed", name);
+        return NGX_ERROR;
+    }
+
+    if (ngx_delete_file(name) == NGX_FILE_ERROR) {
+        ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
+                      ngx_delete_file_n " \"%s\" failed", name);
+    }
+
+    mtx->name = name;
+    mtx->log = log;
+
+    return NGX_OK;
+}
+
+
+void
+ngx_shmtx_destory(ngx_shmtx_t *mtx)
+{
+    if (ngx_close_file(mtx->fd) == NGX_FILE_ERROR) {
+        ngx_log_error(NGX_LOG_ALERT, mtx->log, ngx_errno,
+                      ngx_close_file_n " \"%s\" failed", mtx->name);
+    }
+}
+
+
+#endif