Integrate TLDK with NGINX

Created a clone of nginx (from https://github.com/nginx/nginx)
to demonstrate and benchmark TLDK library integrated with real
world application.
A new nginx module is created and and BSD socket-like API is implemented
on top of native TLDK API.
Note, that right now only minimalistic subset of socket-like API is provided:
- accept
- close
- readv
- recv
- writev
so only limited nginx functionality is available for a moment.

Change-Id: Ie1efe9349a0538da4348a48fb8306cbf636b5a92
Signed-off-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com>
Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
Signed-off-by: Remy Horton <remy.horton@intel.com>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

1 files changed, 134 insertions, 0 deletions

diff --git a/app/nginx/src/os/unix/ngx_posix_init.c b/app/nginx/src/os/unix/ngx_posix_init.c
new file mode 100644
index 0000000..583ea4f
--- /dev/null
+++ b/app/nginx/src/os/unix/ngx_posix_init.c
@@ -0,0 +1,134 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <nginx.h>
+
+
+ngx_int_t   ngx_ncpu;
+ngx_int_t   ngx_max_sockets;
+ngx_uint_t  ngx_inherited_nonblocking;
+ngx_uint_t  ngx_tcp_nodelay_and_tcp_nopush;
+
+
+struct rlimit  rlmt;
+
+
+ngx_os_io_t ngx_os_io = {
+    ngx_unix_recv,
+    ngx_readv_chain,
+    ngx_udp_unix_recv,
+    ngx_unix_send,
+    ngx_udp_unix_send,
+    ngx_udp_unix_sendmsg_chain,
+    ngx_writev_chain,
+    0
+};
+
+
+ngx_int_t
+ngx_os_init(ngx_log_t *log)
+{
+    ngx_time_t  *tp;
+    ngx_uint_t   n;
+
+#if (NGX_HAVE_OS_SPECIFIC_INIT)
+    if (ngx_os_specific_init(log) != NGX_OK) {
+        return NGX_ERROR;
+    }
+#endif
+
+    if (ngx_init_setproctitle(log) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    ngx_pagesize = getpagesize();
+    ngx_cacheline_size = NGX_CPU_CACHE_LINE;
+
+    for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ }
+
+#if (NGX_HAVE_SC_NPROCESSORS_ONLN)
+    if (ngx_ncpu == 0) {
+        ngx_ncpu = sysconf(_SC_NPROCESSORS_ONLN);
+    }
+#endif
+
+    if (ngx_ncpu < 1) {
+        ngx_ncpu = 1;
+    }
+
+    ngx_cpuinfo();
+
+    if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
+        ngx_log_error(NGX_LOG_ALERT, log, errno,
+                      "getrlimit(RLIMIT_NOFILE) failed");
+        return NGX_ERROR;
+    }
+
+    ngx_max_sockets = (ngx_int_t) rlmt.rlim_cur;
+
+#if (NGX_HAVE_INHERITED_NONBLOCK || NGX_HAVE_ACCEPT4)
+    ngx_inherited_nonblocking = 1;
+#else
+    ngx_inherited_nonblocking = 0;
+#endif
+
+    tp = ngx_timeofday();
+    srandom(((unsigned) ngx_pid << 16) ^ tp->sec ^ tp->msec);
+
+    return NGX_OK;
+}
+
+
+void
+ngx_os_status(ngx_log_t *log)
+{
+    ngx_log_error(NGX_LOG_NOTICE, log, 0, NGINX_VER_BUILD);
+
+#ifdef NGX_COMPILER
+    ngx_log_error(NGX_LOG_NOTICE, log, 0, "built by " NGX_COMPILER);
+#endif
+
+#if (NGX_HAVE_OS_SPECIFIC_INIT)
+    ngx_os_specific_status(log);
+#endif
+
+    ngx_log_error(NGX_LOG_NOTICE, log, 0,
+                  "getrlimit(RLIMIT_NOFILE): %r:%r",
+                  rlmt.rlim_cur, rlmt.rlim_max);
+}
+
+
+#if 0
+
+ngx_int_t
+ngx_posix_post_conf_init(ngx_log_t *log)
+{
+    ngx_fd_t  pp[2];
+
+    if (pipe(pp) == -1) {
+        ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "pipe() failed");
+        return NGX_ERROR;
+    }
+
+    if (dup2(pp[1], STDERR_FILENO) == -1) {
+        ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDERR) failed");
+        return NGX_ERROR;
+    }
+
+    if (pp[1] > STDERR_FILENO) {
+        if (close(pp[1]) == -1) {
+            ngx_log_error(NGX_LOG_EMERG, log, errno, "close() failed");
+            return NGX_ERROR;
+        }
+    }
+
+    return NGX_OK;
+}
+
+#endif