Mercurial > hg > nginx
view src/http/ngx_http_write_filter.c @ 10:4f3879d9b6f6
nginx-0.0.1-2002-09-11-19:18:33 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 11 Sep 2002 15:18:33 +0000 |
parents | 6f58641241bb |
children | 77c7629a2627 |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_hunk.h> #include <ngx_event_write.h> #include <ngx_http.h> #include <ngx_http_config.h> #include <ngx_http_output_filter.h> #include <ngx_http_write_filter.h> static ngx_command_t ngx_http_write_filter_commands[]; static void *ngx_http_write_filter_create_conf(ngx_pool_t *pool); ngx_http_module_t ngx_http_write_filter_module = { NGX_HTTP_MODULE, NULL, /* create server config */ ngx_http_write_filter_create_conf, /* create location config */ ngx_http_write_filter_commands, /* module directives */ NULL, /* init module */ NULL /* init output body filter */ }; static ngx_command_t ngx_http_write_filter_commands[] = { {"write_buffer", ngx_conf_set_size_slot, offsetof(ngx_http_write_filter_conf_t, buffer_output), NGX_HTTP_LOC_CONF, NGX_CONF_TAKE1, "set write filter size to buffer output"}, {NULL} }; int ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) { int last; off_t size, flush; ngx_chain_t *ch, **prev, *chain; ngx_http_write_filter_ctx_t *ctx; ngx_http_write_filter_conf_t *conf; ctx = (ngx_http_write_filter_ctx_t *) ngx_get_module_ctx(r->main ? r->main : r, ngx_http_write_filter_module); if (ctx == NULL) ngx_http_create_ctx(r, ctx, ngx_http_write_filter_module, sizeof(ngx_http_write_filter_ctx_t)); size = flush = 0; last = 0; prev = &ctx->out; /* find size, flush point and last link of saved chain */ for (ch = ctx->out; ch; ch = ch->next) { prev = &ch->next; size += ch->hunk->last.file - ch->hunk->pos.file; ngx_log_debug(r->connection->log, "old chunk: %x " QX_FMT " " QD_FMT _ ch->hunk->type _ ch->hunk->pos.file _ ch->hunk->last.file - ch->hunk->pos.file); if (ch->hunk->type & NGX_HUNK_FLUSH|NGX_HUNK_RECYCLED) flush = size; if (ch->hunk->type & NGX_HUNK_LAST) last = 1; } /* add new chain to existent one */ for (/* void */; in; in = in->next) { ngx_test_null(ch, ngx_palloc(r->pool, sizeof(ngx_chain_t)), NGX_ERROR); ch->hunk = in->hunk; ch->next = NULL; *prev = ch; prev = &ch->next; size += ch->hunk->last.file - ch->hunk->pos.file; ngx_log_debug(r->connection->log, "new chunk: %x " QX_FMT " " QD_FMT _ ch->hunk->type _ ch->hunk->pos.file _ ch->hunk->last.file - ch->hunk->pos.file); if (ch->hunk->type & NGX_HUNK_FLUSH|NGX_HUNK_RECYCLED) flush = size; if (ch->hunk->type & NGX_HUNK_LAST) last = 1; } conf = (ngx_http_write_filter_conf_t *) ngx_get_module_loc_conf(r->main ? r->main : r, ngx_http_write_filter_module); if (!last && flush == 0 && size < conf->buffer_output) return NGX_OK; chain = ngx_event_write(r->connection, ctx->out, flush); if (chain == (ngx_chain_t *) -1) return NGX_ERROR; ctx->out = chain; ngx_log_debug(r->connection->log, "write filter %x" _ chain); return (chain ? NGX_AGAIN : NGX_OK); } static void *ngx_http_write_filter_create_conf(ngx_pool_t *pool) { ngx_http_write_filter_conf_t *conf; ngx_test_null(conf, ngx_palloc(pool, sizeof(ngx_http_write_filter_conf_t)), NULL); conf->buffer_output = NGX_CONF_UNSET; return conf; }