nginx-1.12.0-no_pool.patch

diff --minimal '--exclude=*.swp' '--exclude=*~' -up nginx-1.12.0/src/core/nginx.h nginx-1.12.0-patched/src/core/nginx.h
--- nginx-1.12.0/src/core/nginx.h	2017-07-06 14:08:35.800244000 -0700
+++ nginx-1.12.0-patched/src/core/nginx.h	2017-07-06 14:08:46.497880000 -0700
@@ -10,7 +10,7 @@


 #define nginx_version      1012000
-#define NGINX_VERSION      "1.12.0"
+#define NGINX_VERSION      "1.12.0 (no pool)"
 #define NGINX_VER          "nginx/" NGINX_VERSION

 #ifdef NGX_BUILD
diff --minimal '--exclude=*.swp' '--exclude=*~' -up nginx-1.12.0/src/core/ngx_array.c nginx-1.12.0-patched/src/core/ngx_array.c
--- nginx-1.12.0/src/core/ngx_array.c	2017-07-06 14:09:09.440837000 -0700
+++ nginx-1.12.0-patched/src/core/ngx_array.c	2017-07-06 14:09:21.904569000 -0700
@@ -30,26 +30,30 @@ ngx_array_create(ngx_pool_t *p, ngx_uint
 void
 ngx_array_destroy(ngx_array_t *a)
 {
-    ngx_pool_t  *p;
+    ngx_pool_t          *p;
+    ngx_array_link_t    *link;

     p = a->pool;

-    if ((u_char *) a->elts + a->size * a->nalloc == p->d.last) {
-        p->d.last -= a->size * a->nalloc;
+    if (a->elts) {
+        ngx_pfree(p, a->elts);
     }

-    if ((u_char *) a + sizeof(ngx_array_t) == p->d.last) {
-        p->d.last = (u_char *) a;
+    for (link = a->old_elts; link; link = link->next) {
+        ngx_pfree(p, link->elts);
     }
+
+    ngx_pfree(p, a);
 }


 void *
 ngx_array_push(ngx_array_t *a)
 {
-    void        *elt, *new;
-    size_t       size;
-    ngx_pool_t  *p;
+    void                *elt, *new;
+    size_t               size;
+    ngx_pool_t          *p;
+    ngx_array_link_t    *link;

     if (a->nelts == a->nalloc) {

@@ -59,29 +63,27 @@ ngx_array_push(ngx_array_t *a)

         p = a->pool;

-        if ((u_char *) a->elts + size == p->d.last
-            && p->d.last + a->size <= p->d.end)
-        {
-            /*
-             * the array allocation is the last in the pool
-             * and there is space for new allocation
-             */
-
-            p->d.last += a->size;
-            a->nalloc++;
+        /* allocate a new array */

-        } else {
-            /* allocate a new array */
+        new = ngx_palloc(p, 2 * size);
+        if (new == NULL) {
+            return NULL;
+        }

-            new = ngx_palloc(p, 2 * size);
-            if (new == NULL) {
-                return NULL;
-            }
+        ngx_memcpy(new, a->elts, size);

-            ngx_memcpy(new, a->elts, size);
-            a->elts = new;
-            a->nalloc *= 2;
+        link = ngx_palloc(p, sizeof(ngx_array_link_t));
+        if (link == NULL) {
+            ngx_pfree(p, new);
+            return NULL;
         }
+
+        link->next = a->old_elts;
+        link->elts = a->elts;
+        a->old_elts = link;
+
+        a->elts = new;
+        a->nalloc *= 2;
     }

     elt = (u_char *) a->elts + a->size * a->nelts;
@@ -95,11 +97,10 @@ void *
 ngx_array_push_n(ngx_array_t *a, ngx_uint_t n)
 {
     void        *elt, *new;
-    size_t       size;
     ngx_uint_t   nalloc;
     ngx_pool_t  *p;

-    size = n * a->size;
+    ngx_array_link_t    *link;

     if (a->nelts + n > a->nalloc) {

@@ -107,31 +108,27 @@ ngx_array_push_n(ngx_array_t *a, ngx_uin

         p = a->pool;

-        if ((u_char *) a->elts + a->size * a->nalloc == p->d.last
-            && p->d.last + size <= p->d.end)
-        {
-            /*
-             * the array allocation is the last in the pool
-             * and there is space for new allocation
-             */
+        nalloc = 2 * ((n >= a->nalloc) ? n : a->nalloc);

-            p->d.last += size;
-            a->nalloc += n;
+        new = ngx_palloc(p, nalloc * a->size);
+        if (new == NULL) {
+            return NULL;
+        }

-        } else {
-            /* allocate a new array */
+        ngx_memcpy(new, a->elts, a->nelts * a->size);

-            nalloc = 2 * ((n >= a->nalloc) ? n : a->nalloc);
+        link = ngx_palloc(p, sizeof(ngx_array_link_t));
+        if (link == NULL) {
+            ngx_pfree(p, new);
+            return NULL;
+        }

-            new = ngx_palloc(p, nalloc * a->size);
-            if (new == NULL) {
-                return NULL;
-            }
+        link->next = a->old_elts;
+        link->elts = a->elts;
+        a->old_elts = link;

-            ngx_memcpy(new, a->elts, a->nelts * a->size);
-            a->elts = new;
-            a->nalloc = nalloc;
-        }
+        a->elts = new;
+        a->nalloc = nalloc;
     }

     elt = (u_char *) a->elts + a->size * a->nelts;
diff --minimal '--exclude=*.swp' '--exclude=*~' -up nginx-1.12.0/src/core/ngx_array.h nginx-1.12.0-patched/src/core/ngx_array.h
--- nginx-1.12.0/src/core/ngx_array.h	2017-07-06 14:09:32.647557000 -0700
+++ nginx-1.12.0-patched/src/core/ngx_array.h	2017-07-06 14:09:40.983133000 -0700
@@ -13,12 +13,23 @@
 #include <ngx_core.h>


+typedef struct ngx_array_link_s ngx_array_link_t;
+
+
+struct ngx_array_link_s {
+    void                    *elts;
+    ngx_array_link_t        *next;
+};
+
+
 typedef struct {
     void        *elts;
     ngx_uint_t   nelts;
     size_t       size;
     ngx_uint_t   nalloc;
     ngx_pool_t  *pool;
+
+    ngx_array_link_t *old_elts;
 } ngx_array_t;


@@ -40,6 +51,7 @@ ngx_array_init(ngx_array_t *array, ngx_p
     array->size = size;
     array->nalloc = n;
     array->pool = pool;
+    array->old_elts = NULL;

     array->elts = ngx_palloc(pool, n * size);
     if (array->elts == NULL) {
diff --minimal '--exclude=*.swp' '--exclude=*~' -up nginx-1.12.0/src/core/ngx_palloc.c nginx-1.12.0-patched/src/core/ngx_palloc.c
--- nginx-1.12.0/src/core/ngx_palloc.c	2017-07-06 14:09:56.030758000 -0700
+++ nginx-1.12.0-patched/src/core/ngx_palloc.c	2017-07-06 14:10:02.524863000 -0700
@@ -9,34 +9,26 @@
 #include <ngx_core.h>


-static ngx_inline void *ngx_palloc_small(ngx_pool_t *pool, size_t size,
-    ngx_uint_t align);
-static void *ngx_palloc_block(ngx_pool_t *pool, size_t size);
-static void *ngx_palloc_large(ngx_pool_t *pool, size_t size);
+static void * ngx_malloc(ngx_pool_t *pool, size_t size);


 ngx_pool_t *
 ngx_create_pool(size_t size, ngx_log_t *log)
 {
-    ngx_pool_t  *p;
+    ngx_pool_t        *p;

-    p = ngx_memalign(NGX_POOL_ALIGNMENT, size, log);
+    size = sizeof(ngx_pool_t);
+    p = ngx_alloc(size, log);
     if (p == NULL) {
         return NULL;
     }

-    p->d.last = (u_char *) p + sizeof(ngx_pool_t);
-    p->d.end = (u_char *) p + size;
-    p->d.next = NULL;
-    p->d.failed = 0;
+    ngx_memzero(p, size);

     size = size - sizeof(ngx_pool_t);
     p->max = (size < NGX_MAX_ALLOC_FROM_POOL) ? size : NGX_MAX_ALLOC_FROM_POOL;

     p->current = p;
-    p->chain = NULL;
-    p->large = NULL;
-    p->cleanup = NULL;
     p->log = log;

     return p;
@@ -46,8 +38,7 @@ ngx_create_pool(size_t size, ngx_log_t *
 void
 ngx_destroy_pool(ngx_pool_t *pool)
 {
-    ngx_pool_t          *p, *n;
-    ngx_pool_large_t    *l;
+    ngx_pool_data_t     *d, *n;
     ngx_pool_cleanup_t  *c;

     for (c = pool->cleanup; c; c = c->next) {
@@ -58,6 +49,11 @@ ngx_destroy_pool(ngx_pool_t *pool)
         }
     }

+    if (pool->d == NULL) {
+        ngx_free(pool);
+        return;
+    }
+
 #if (NGX_DEBUG)

     /*
@@ -65,13 +61,9 @@ ngx_destroy_pool(ngx_pool_t *pool)
      * so we cannot use this log while free()ing the pool
      */

-    for (l = pool->large; l; l = l->next) {
-        ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc);
-    }
-
-    for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) {
+    for (d = pool->d, n = d->next; ; d = n, n = n->next) {
         ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0,
-                       "free: %p, unused: %uz", p, p->d.end - p->d.last);
+                       "free: %p, unused: %d", d, 0);

         if (n == NULL) {
             break;
@@ -80,171 +72,82 @@ ngx_destroy_pool(ngx_pool_t *pool)

 #endif

-    for (l = pool->large; l; l = l->next) {
-        if (l->alloc) {
-            ngx_free(l->alloc);
-        }
-    }
-
-    for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) {
-        ngx_free(p);
+    for (d = pool->d, n = d->next; ; d = n, n = n->next) {
+        ngx_free(d->alloc);
+        ngx_free(d);

         if (n == NULL) {
             break;
         }
     }
+
+    pool->d = NULL;
+    ngx_free(pool);
 }


 void
 ngx_reset_pool(ngx_pool_t *pool)
 {
-    ngx_pool_t        *p;
-    ngx_pool_large_t  *l;
+    ngx_pool_data_t     *d, *n;
+    ngx_pool_data_t     *saved = NULL;

-    for (l = pool->large; l; l = l->next) {
-        if (l->alloc) {
-            ngx_free(l->alloc);
+    if (pool->d) {
+        for (d = pool->d, n = d->next; ; d = n, n = n->next) {
+            if (d->alloc == pool->log) {
+                saved = d;
+                continue;
+            }
+
+            ngx_free(d->alloc);
+            ngx_free(d);
+
+            if (n == NULL) {
+                break;
+            }
         }
-    }

-    for (p = pool; p; p = p->d.next) {
-        p->d.last = (u_char *) p + sizeof(ngx_pool_t);
-        p->d.failed = 0;
+        pool->d = saved;
+        pool->current = pool;
+        pool->chain = NULL;
     }
-
-    pool->current = pool;
-    pool->chain = NULL;
-    pool->large = NULL;
 }


 void *
 ngx_palloc(ngx_pool_t *pool, size_t size)
 {
-#if !(NGX_DEBUG_PALLOC)
-    if (size <= pool->max) {
-        return ngx_palloc_small(pool, size, 1);
-    }
-#endif
-
-    return ngx_palloc_large(pool, size);
+    return ngx_malloc(pool, size);
 }


 void *
 ngx_pnalloc(ngx_pool_t *pool, size_t size)
 {
-#if !(NGX_DEBUG_PALLOC)
-    if (size <= pool->max) {
-        return ngx_palloc_small(pool, size, 0);
-    }
-#endif
-
-    return ngx_palloc_large(pool, size);
-}
-
-
-static ngx_inline void *
-ngx_palloc_small(ngx_pool_t *pool, size_t size, ngx_uint_t align)
-{
-    u_char      *m;
-    ngx_pool_t  *p;
-
-    p = pool->current;
-
-    do {
-        m = p->d.last;
-
-        if (align) {
-            m = ngx_align_ptr(m, NGX_ALIGNMENT);
-        }
-
-        if ((size_t) (p->d.end - m) >= size) {
-            p->d.last = m + size;
-
-            return m;
-        }
-
-        p = p->d.next;
-
-    } while (p);
-
-    return ngx_palloc_block(pool, size);
-}
-
-
-static void *
-ngx_palloc_block(ngx_pool_t *pool, size_t size)
-{
-    u_char      *m;
-    size_t       psize;
-    ngx_pool_t  *p, *new;
-
-    psize = (size_t) (pool->d.end - (u_char *) pool);
-
-    m = ngx_memalign(NGX_POOL_ALIGNMENT, psize, pool->log);
-    if (m == NULL) {
-        return NULL;
-    }
-
-    new = (ngx_pool_t *) m;
-
-    new->d.end = m + psize;
-    new->d.next = NULL;
-    new->d.failed = 0;
-
-    m += sizeof(ngx_pool_data_t);
-    m = ngx_align_ptr(m, NGX_ALIGNMENT);
-    new->d.last = m + size;
-
-    for (p = pool->current; p->d.next; p = p->d.next) {
-        if (p->d.failed++ > 4) {
-            pool->current = p->d.next;
-        }
-    }
-
-    p->d.next = new;
-
-    return m;
+    return ngx_malloc(pool, size);
 }


 static void *
-ngx_palloc_large(ngx_pool_t *pool, size_t size)
+ngx_malloc(ngx_pool_t *pool, size_t size)
 {
-    void              *p;
-    ngx_uint_t         n;
-    ngx_pool_large_t  *large;
+    void                *p;
+    ngx_pool_data_t     *d;

     p = ngx_alloc(size, pool->log);
     if (p == NULL) {
         return NULL;
     }

-    n = 0;
-
-    for (large = pool->large; large; large = large->next) {
-        if (large->alloc == NULL) {
-            large->alloc = p;
-            return p;
-        }
-
-        if (n++ > 3) {
-            break;
-        }
-    }
-
-    large = ngx_palloc_small(pool, sizeof(ngx_pool_large_t), 1);
-    if (large == NULL) {
+    d = ngx_alloc(sizeof(ngx_pool_data_t), pool->log);
+    if (d == NULL){
         ngx_free(p);
         return NULL;
     }

-    large->alloc = p;
-    large->next = pool->large;
-    pool->large = large;
-
+    d->alloc = p;
+    d->next = pool->d;
+    pool->d = d;
     return p;
 }

@@ -253,38 +156,48 @@ void *
 ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment)
 {
     void              *p;
-    ngx_pool_large_t  *large;
+    ngx_pool_data_t   *d;

     p = ngx_memalign(alignment, size, pool->log);
     if (p == NULL) {
         return NULL;
     }

-    large = ngx_palloc_small(pool, sizeof(ngx_pool_large_t), 1);
-    if (large == NULL) {
+    d = ngx_alloc(sizeof(ngx_pool_data_t), pool->log);
+    if (d == NULL){
         ngx_free(p);
         return NULL;
     }

-    large->alloc = p;
-    large->next = pool->large;
-    pool->large = large;
-
+    d->alloc = p;
+    d->next = pool->d;
+    pool->d = d;
     return p;
 }


 ngx_int_t
-ngx_pfree(ngx_pool_t *pool, void *p)
+ngx_pfree(ngx_pool_t *pool, void *data)
 {
-    ngx_pool_large_t  *l;
+    ngx_pool_data_t     *p, *d;

-    for (l = pool->large; l; l = l->next) {
-        if (p == l->alloc) {
-            ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0,
-                           "free: %p", l->alloc);
-            ngx_free(l->alloc);
-            l->alloc = NULL;
+    p = NULL;
+    for (d = pool->d; d; p = d, d = d->next) {
+        if (data == d->alloc) {
+
+            ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", d->alloc);
+
+            ngx_free(d->alloc);
+            d->alloc = NULL;
+
+            if (p) {
+                p->next = d->next;
+
+            } else {
+                pool->d = d->next;
+            }
+
+            ngx_free(d);

             return NGX_OK;
         }
diff --minimal '--exclude=*.swp' '--exclude=*~' -up nginx-1.12.0/src/core/ngx_palloc.h nginx-1.12.0-patched/src/core/ngx_palloc.h
--- nginx-1.12.0/src/core/ngx_palloc.h	2017-07-06 14:13:46.709100000 -0700
+++ nginx-1.12.0-patched/src/core/ngx_palloc.h	2017-07-06 14:13:47.628735000 -0700
@@ -38,28 +38,21 @@ struct ngx_pool_cleanup_s {
 };


-typedef struct ngx_pool_large_s  ngx_pool_large_t;
-
-struct ngx_pool_large_s {
-    ngx_pool_large_t     *next;
-    void                 *alloc;
-};
+typedef struct ngx_pool_data_s   ngx_pool_large_t;
+typedef struct ngx_pool_data_s   ngx_pool_data_t;


-typedef struct {
-    u_char               *last;
-    u_char               *end;
-    ngx_pool_t           *next;
-    ngx_uint_t            failed;
-} ngx_pool_data_t;
+struct ngx_pool_data_s {
+    ngx_pool_data_t        *next;
+    void                   *alloc;
+};


 struct ngx_pool_s {
-    ngx_pool_data_t       d;
+    ngx_pool_data_t      *d;
     size_t                max;
     ngx_pool_t           *current;
     ngx_chain_t          *chain;
-    ngx_pool_large_t     *large;
     ngx_pool_cleanup_t   *cleanup;
     ngx_log_t            *log;
 };