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, 313 insertions, 0 deletions

diff --git a/app/nginx/src/os/unix/ngx_atomic.h b/app/nginx/src/os/unix/ngx_atomic.h
new file mode 100644
index 0000000..74b8b7f
--- /dev/null
+++ b/app/nginx/src/os/unix/ngx_atomic.h
@@ -0,0 +1,313 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#ifndef _NGX_ATOMIC_H_INCLUDED_
+#define _NGX_ATOMIC_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+#if (NGX_HAVE_LIBATOMIC)
+
+#define AO_REQUIRE_CAS
+#include <atomic_ops.h>
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+typedef long                        ngx_atomic_int_t;
+typedef AO_t                        ngx_atomic_uint_t;
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+#if (NGX_PTR_SIZE == 8)
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+#else
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+#endif
+
+#define ngx_atomic_cmp_set(lock, old, new)                                    \
+    AO_compare_and_swap(lock, old, new)
+#define ngx_atomic_fetch_add(value, add)                                      \
+    AO_fetch_and_add(value, add)
+#define ngx_memory_barrier()        AO_nop()
+#define ngx_cpu_pause()
+
+
+#elif (NGX_DARWIN_ATOMIC)
+
+/*
+ * use Darwin 8 atomic(3) and barrier(3) operations
+ * optimized at run-time for UP and SMP
+ */
+
+#include <libkern/OSAtomic.h>
+
+/* "bool" conflicts with perl's CORE/handy.h */
+#if 0
+#undef bool
+#endif
+
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+#if (NGX_PTR_SIZE == 8)
+
+typedef int64_t                     ngx_atomic_int_t;
+typedef uint64_t                    ngx_atomic_uint_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+
+#define ngx_atomic_cmp_set(lock, old, new)                                    \
+    OSAtomicCompareAndSwap64Barrier(old, new, (int64_t *) lock)
+
+#define ngx_atomic_fetch_add(value, add)                                      \
+    (OSAtomicAdd64(add, (int64_t *) value) - add)
+
+#else
+
+typedef int32_t                     ngx_atomic_int_t;
+typedef uint32_t                    ngx_atomic_uint_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+
+#define ngx_atomic_cmp_set(lock, old, new)                                    \
+    OSAtomicCompareAndSwap32Barrier(old, new, (int32_t *) lock)
+
+#define ngx_atomic_fetch_add(value, add)                                      \
+    (OSAtomicAdd32(add, (int32_t *) value) - add)
+
+#endif
+
+#define ngx_memory_barrier()        OSMemoryBarrier()
+
+#define ngx_cpu_pause()
+
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+
+#elif (NGX_HAVE_GCC_ATOMIC)
+
+/* GCC 4.1 builtin atomic operations */
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+typedef long                        ngx_atomic_int_t;
+typedef unsigned long               ngx_atomic_uint_t;
+
+#if (NGX_PTR_SIZE == 8)
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+#else
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+#endif
+
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+
+#define ngx_atomic_cmp_set(lock, old, set)                                    \
+    __sync_bool_compare_and_swap(lock, old, set)
+
+#define ngx_atomic_fetch_add(value, add)                                      \
+    __sync_fetch_and_add(value, add)
+
+#define ngx_memory_barrier()        __sync_synchronize()
+
+#if ( __i386__ || __i386 || __amd64__ || __amd64 )
+#define ngx_cpu_pause()             __asm__ ("pause")
+#else
+#define ngx_cpu_pause()
+#endif
+
+
+#elif ( __i386__ || __i386 )
+
+typedef int32_t                     ngx_atomic_int_t;
+typedef uint32_t                    ngx_atomic_uint_t;
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+
+
+#if ( __SUNPRO_C )
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+ngx_atomic_uint_t
+ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
+    ngx_atomic_uint_t set);
+
+ngx_atomic_int_t
+ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
+
+/*
+ * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
+ * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_x86.il
+ */
+
+void
+ngx_cpu_pause(void);
+
+/* the code in src/os/unix/ngx_sunpro_x86.il */
+
+#define ngx_memory_barrier()        __asm (".volatile"); __asm (".nonvolatile")
+
+
+#else /* ( __GNUC__ || __INTEL_COMPILER ) */
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+#include "ngx_gcc_atomic_x86.h"
+
+#endif
+
+
+#elif ( __amd64__ || __amd64 )
+
+typedef int64_t                     ngx_atomic_int_t;
+typedef uint64_t                    ngx_atomic_uint_t;
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+
+
+#if ( __SUNPRO_C )
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+ngx_atomic_uint_t
+ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
+    ngx_atomic_uint_t set);
+
+ngx_atomic_int_t
+ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
+
+/*
+ * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
+ * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_amd64.il
+ */
+
+void
+ngx_cpu_pause(void);
+
+/* the code in src/os/unix/ngx_sunpro_amd64.il */
+
+#define ngx_memory_barrier()        __asm (".volatile"); __asm (".nonvolatile")
+
+
+#else /* ( __GNUC__ || __INTEL_COMPILER ) */
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+#include "ngx_gcc_atomic_amd64.h"
+
+#endif
+
+
+#elif ( __sparc__ || __sparc || __sparcv9 )
+
+#if (NGX_PTR_SIZE == 8)
+
+typedef int64_t                     ngx_atomic_int_t;
+typedef uint64_t                    ngx_atomic_uint_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+
+#else
+
+typedef int32_t                     ngx_atomic_int_t;
+typedef uint32_t                    ngx_atomic_uint_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+
+#endif
+
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+
+#if ( __SUNPRO_C )
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+#include "ngx_sunpro_atomic_sparc64.h"
+
+
+#else /* ( __GNUC__ || __INTEL_COMPILER ) */
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+#include "ngx_gcc_atomic_sparc64.h"
+
+#endif
+
+
+#elif ( __powerpc__ || __POWERPC__ )
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+#if (NGX_PTR_SIZE == 8)
+
+typedef int64_t                     ngx_atomic_int_t;
+typedef uint64_t                    ngx_atomic_uint_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+
+#else
+
+typedef int32_t                     ngx_atomic_int_t;
+typedef uint32_t                    ngx_atomic_uint_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+
+#endif
+
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+
+#include "ngx_gcc_atomic_ppc.h"
+
+#endif
+
+
+#if !(NGX_HAVE_ATOMIC_OPS)
+
+#define NGX_HAVE_ATOMIC_OPS  0
+
+typedef int32_t                     ngx_atomic_int_t;
+typedef uint32_t                    ngx_atomic_uint_t;
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+
+
+static ngx_inline ngx_atomic_uint_t
+ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
+    ngx_atomic_uint_t set)
+{
+    if (*lock == old) {
+        *lock = set;
+        return 1;
+    }
+
+    return 0;
+}
+
+
+static ngx_inline ngx_atomic_int_t
+ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
+{
+    ngx_atomic_int_t  old;
+
+    old = *value;
+    *value += add;
+
+    return old;
+}
+
+#define ngx_memory_barrier()
+#define ngx_cpu_pause()
+
+#endif
+
+
+void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin);
+
+#define ngx_trylock(lock)  (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
+#define ngx_unlock(lock)    *(lock) = 0
+
+
+#endif /* _NGX_ATOMIC_H_INCLUDED_ */