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diff src/core/ngx_output_chain.c @ 6441:9fd738b85fad

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Threads: task pointer stored in ngx_file_t. This simplifies the interface of the ngx_thread_read() function. Additionally, most of the thread operations now explicitly set file->thread_task, file->thread_handler and file->thread_ctx, to facilitate use of thread operations in other places. (Potential problems remain with sendfile in threads though - it uses file->thread_handler as set in ngx_output_chain(), and it should not be overwritten to an incompatible one.) In collaboration with Valentin Bartenev.
author Maxim Dounin <mdounin@mdounin.ru>
date Fri, 18 Mar 2016 06:43:52 +0300
parents c5f81dcf97a7
children 4395758d08e6
line wrap: on
line diff
--- a/src/core/ngx_output_chain.c
+++ b/src/core/ngx_output_chain.c
@@ -577,10 +577,15 @@ ngx_output_chain_copy_buf(ngx_output_cha
         } else
 #endif
 #if (NGX_THREADS)
-        if (src->file->thread_handler) {
-            n = ngx_thread_read(&ctx->thread_task, src->file, dst->pos,
-                                (size_t) size, src->file_pos, ctx->pool);
+        if (ctx->thread_handler) {
+            src->file->thread_task = ctx->thread_task;
+            src->file->thread_handler = ctx->thread_handler;
+            src->file->thread_ctx = ctx->filter_ctx;
+
+            n = ngx_thread_read(src->file, dst->pos, (size_t) size,
+                                src->file_pos, ctx->pool);
             if (n == NGX_AGAIN) {
+                ctx->thread_task = src->file->thread_task;
                 return NGX_AGAIN;
             }